diff --git a/backend-spring/build.gradle b/backend-spring/build.gradle
index 6c9f389e..04407810 100644
--- a/backend-spring/build.gradle
+++ b/backend-spring/build.gradle
@@ -24,6 +24,7 @@ repositories {
 
 dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-web'
+    developmentOnly 'org.springframework.boot:spring-boot-devtools'
     implementation 'org.springframework.boot:spring-boot-starter-mail'
     implementation 'org.springframework.boot:spring-boot-starter-security'
     implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:3.0.3'
diff --git a/backend-spring/src/main/java/com/erp/controller/AdminController.java b/backend-spring/src/main/java/com/erp/controller/AdminController.java
index a038a4f0..43c88fef 100644
--- a/backend-spring/src/main/java/com/erp/controller/AdminController.java
+++ b/backend-spring/src/main/java/com/erp/controller/AdminController.java
@@ -27,16 +27,16 @@ public class AdminController {
      */
     @GetMapping("/menus")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getAdminMenus(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
-        params.put("userType", role);
-        params.put("userId", userId);
-        params.putIfAbsent("userLang", "ko");
-        params.put("isManagementScreen",
-                params.get("menuType") == null || "true".equals(params.get("includeInactive")));
+        params.put("company_code", companyCode);
+        params.put("user_type", role);
+        params.put("user_id", userId);
+        params.putIfAbsent("user_lang", "ko");
+        params.put("is_management_screen",
+                params.get("menu_type") == null || "true".equals(params.get("include_inactive")));
         return ResponseEntity.ok(ApiResponse.success(adminService.getAdminMenuList(params), "관리자 메뉴 목록 조회 성공"));
     }
 
@@ -46,14 +46,14 @@ public class AdminController {
      */
     @GetMapping("/user-menus")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getUserMenus(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
-        params.put("userType", role);
-        params.put("userId", userId);
-        params.putIfAbsent("userLang", "ko");
+        params.put("company_code", companyCode);
+        params.put("user_type", role);
+        params.put("user_id", userId);
+        params.putIfAbsent("user_lang", "ko");
         return ResponseEntity.ok(ApiResponse.success(adminService.getUserMenuList(params), "사용자 메뉴 목록 조회 성공"));
     }
 
@@ -63,11 +63,11 @@ public class AdminController {
      */
     @GetMapping("/pop-menus")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getPopMenus(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("userType", role);
+        params.put("company_code", companyCode);
+        params.put("user_type", role);
         return ResponseEntity.ok(ApiResponse.success(adminService.getPopMenuList(params), "POP 메뉴 목록 조회 성공"));
     }
 
@@ -90,9 +90,9 @@ public class AdminController {
      */
     @PostMapping("/menus")
     public ResponseEntity<ApiResponse<Map<String, Object>>> saveMenu(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(adminService.saveMenu(body), "메뉴 등록 성공"));
     }
 
@@ -133,7 +133,7 @@ public class AdminController {
     @DeleteMapping("/menus/batch")
     public ResponseEntity<ApiResponse<Void>> deleteMenusBatch(@RequestBody Map<String, Object> body) {
         @SuppressWarnings("unchecked")
-        List<String> menuIds = (List<String>) body.get("menuIds");
+        List<String> menuIds = (List<String>) body.get("menu_ids");
         if (menuIds != null) {
             menuIds.forEach(adminService::deleteMenu);
         }
@@ -148,14 +148,14 @@ public class AdminController {
      */
     @GetMapping("/users")
     public ResponseEntity<?> getUserList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
             @RequestParam Map<String, Object> params) {
         // SUPER_ADMIN이 아닌 경우 자사 필터 적용
         if (!"SUPER_ADMIN".equals(role)) {
-            params.put("companyCode", companyCode);
+            params.put("company_code", companyCode);
         } else {
-            params.put("companyCode", "*");
+            params.put("company_code", "*");
         }
         params.putIfAbsent("page", "1");
         params.putIfAbsent("limit", "20");
@@ -199,11 +199,11 @@ public class AdminController {
      */
     @GetMapping("/users/{userId}/with-dept")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getUserWithDept(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("userId", userId);
+        params.put("company_code", companyCode);
+        params.put("user_id", userId);
         Map<String, Object> result = adminService.getUserWithDept(params);
         if (result == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("사용자를 찾을 수 없습니다."));
@@ -217,9 +217,9 @@ public class AdminController {
      */
     @PostMapping("/users/with-dept")
     public ResponseEntity<ApiResponse<Map<String, Object>>> saveUserWithDept(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(adminService.saveUserWithDept(body)));
     }
 
@@ -229,9 +229,9 @@ public class AdminController {
      */
     @PostMapping("/users")
     public ResponseEntity<ApiResponse<Map<String, Object>>> saveUser(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(adminService.saveUser(body), "사용자 저장 성공"));
     }
 
@@ -242,10 +242,10 @@ public class AdminController {
     @PutMapping("/users/{userId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateUser(
             @PathVariable String userId,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("userId", userId);
-        body.put("companyCode", companyCode);
+        body.put("user_id", userId);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(adminService.saveUser(body), "사용자 수정 성공"));
     }
 
@@ -268,7 +268,7 @@ public class AdminController {
      */
     @PostMapping("/users/reset-password")
     public ResponseEntity<ApiResponse<Void>> resetUserPassword(@RequestBody Map<String, Object> body) {
-        String userId = (String) body.get("userId");
+        String userId = (String) body.get("user_id");
         adminService.resetUserPassword(userId);
         return ResponseEntity.ok(ApiResponse.success(null, "비밀번호 초기화 성공"));
     }
@@ -280,10 +280,10 @@ public class AdminController {
     @PostMapping("/users/check-duplicate")
     public ResponseEntity<ApiResponse<Map<String, Object>>> checkDuplicateUserId(
             @RequestBody Map<String, Object> body) {
-        String userId = (String) body.get("userId");
+        String userId = (String) body.get("user_id");
         Map<String, Object> existing = adminService.getUserInfo(userId);
         Map<String, Object> result = new HashMap<>();
-        result.put("isDuplicate", existing != null);
+        result.put("is_duplicate", existing != null);
         return ResponseEntity.ok(ApiResponse.success(result, "아이디 중복 확인 완료"));
     }
 
@@ -295,9 +295,9 @@ public class AdminController {
      */
     @PutMapping("/profile")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateProfile(
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("userId", userId);
+        body.put("user_id", userId);
         return ResponseEntity.ok(ApiResponse.success(adminService.saveUser(body), "프로필 수정 성공"));
     }
 
@@ -309,23 +309,23 @@ public class AdminController {
      */
     @GetMapping("/departments")
     public ResponseEntity<?> getDepartmentList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         Map<String, Object> serviceResult = adminService.getDepartmentList(params);
 
         int total = ((Number) serviceResult.get("total")).intValue();
 
         Map<String, Object> data = new HashMap<>();
         data.put("departments", serviceResult.get("departments"));
-        data.put("flatList", serviceResult.get("flatList"));
+        data.put("flat_list", serviceResult.get("flat_list"));
 
         Map<String, Object> response = new HashMap<>();
         response.put("success", true);
         response.put("data", data);
         response.put("message", "부서 목록 조회 성공");
         response.put("total", total);
-        response.put("totalCount", total);
+        response.put("total_count", total);
         return ResponseEntity.ok(response);
     }
 
@@ -402,7 +402,7 @@ public class AdminController {
      */
     @GetMapping("/user-locale")
     public ResponseEntity<ApiResponse<Object>> getUserLocale(
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("user_id") String userId) {
         Map<String, Object> row = adminService.getUserLocale(userId);
         Object locale = row.getOrDefault("locale", "KR");
         return ResponseEntity.ok(ApiResponse.success(locale, "사용자 로케일 조회 성공"));
@@ -414,7 +414,7 @@ public class AdminController {
      */
     @PostMapping("/user-locale")
     public ResponseEntity<ApiResponse<Object>> setUserLocale(
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
         String locale = (String) body.get("locale");
         if (locale == null || locale.isBlank()) {
diff --git a/backend-spring/src/main/java/com/erp/controller/AiAssistantProxyController.java b/backend-spring/src/main/java/com/erp/controller/AiAssistantProxyController.java
index ace153cd..c63e8ff5 100644
--- a/backend-spring/src/main/java/com/erp/controller/AiAssistantProxyController.java
+++ b/backend-spring/src/main/java/com/erp/controller/AiAssistantProxyController.java
@@ -21,7 +21,7 @@ public class AiAssistantProxyController {
     @GetMapping("/api/ai/v1/status")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getStatus() {
         Map<String, Object> result = new HashMap<>();
-        result.put("serviceUrl", "http://127.0.0.1:3100");
+        result.put("service_url", "http://127.0.0.1:3100");
         result.put("status", "ok");
         result.put("message", "AI 어시스턴트 프록시 서비스가 구성되었습니다.");
         return ResponseEntity.ok(ApiResponse.success(result));
diff --git a/backend-spring/src/main/java/com/erp/controller/AnalyticsReportController.java b/backend-spring/src/main/java/com/erp/controller/AnalyticsReportController.java
index 08c0cb2a..af6fb636 100644
--- a/backend-spring/src/main/java/com/erp/controller/AnalyticsReportController.java
+++ b/backend-spring/src/main/java/com/erp/controller/AnalyticsReportController.java
@@ -19,49 +19,49 @@ public class AnalyticsReportController {
 
     @GetMapping("/production/data")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getProductionReportData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(analyticsReportService.getProductionReportData(params)));
     }
 
     @GetMapping("/inventory/data")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getInventoryReportData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(analyticsReportService.getInventoryReportData(params)));
     }
 
     @GetMapping("/purchase/data")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getPurchaseReportData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(analyticsReportService.getPurchaseReportData(params)));
     }
 
     @GetMapping("/quality/data")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getQualityReportData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(analyticsReportService.getQualityReportData(params)));
     }
 
     @GetMapping("/equipment/data")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getEquipmentReportData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(analyticsReportService.getEquipmentReportData(params)));
     }
 
     @GetMapping("/mold/data")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMoldReportData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(analyticsReportService.getMoldReportData(params)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/ApprovalController.java b/backend-spring/src/main/java/com/erp/controller/ApprovalController.java
index 15192fbe..adc270a5 100644
--- a/backend-spring/src/main/java/com/erp/controller/ApprovalController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ApprovalController.java
@@ -27,19 +27,19 @@ public class ApprovalController {
     @GetMapping("/definitions")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getDefinitions(
             @RequestParam Map<String, Object> params,
-            @RequestAttribute("companyCode") String companyCode) {
-        params.put("companyCode", companyCode);
+            @RequestAttribute("company_code") String companyCode) {
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(approvalService.getDefinitions(params)));
     }
 
     @GetMapping("/definitions/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDefinition(
             @PathVariable Long id,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("definitionId", id);
-            params.put("companyCode",  companyCode);
+            params.put("definition_id", id);
+            params.put("company_code",  companyCode);
             return ResponseEntity.ok(ApiResponse.success(approvalService.getDefinition(params)));
         } catch (IllegalArgumentException e) {
             return ResponseEntity.status(404).body(ApiResponse.error(e.getMessage()));
@@ -49,12 +49,12 @@ public class ApprovalController {
     @PostMapping("/definitions")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createDefinition(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         if (body.get("definition_name") == null)
             return ResponseEntity.status(400).body(ApiResponse.error("결재 유형명은 필수입니다."));
-        body.put("companyCode", companyCode);
-        body.put("userId", userId);
+        body.put("company_code", companyCode);
+        body.put("user_id", userId);
         try {
             return ResponseEntity.status(HttpStatus.CREATED)
                     .body(ApiResponse.success(approvalService.createDefinition(body), "결재 유형이 생성되었습니다."));
@@ -68,11 +68,11 @@ public class ApprovalController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateDefinition(
             @PathVariable Long id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        body.put("definitionId", id);
-        body.put("companyCode",  companyCode);
-        body.put("userId",       userId);
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        body.put("definition_id", id);
+        body.put("company_code",  companyCode);
+        body.put("user_id",       userId);
         try {
             return ResponseEntity.ok(ApiResponse.success(approvalService.updateDefinition(body), "결재 유형이 수정되었습니다."));
         } catch (IllegalArgumentException e) {
@@ -86,10 +86,10 @@ public class ApprovalController {
     @DeleteMapping("/definitions/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteDefinition(
             @PathVariable Long id,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("definitionId", id);
-        params.put("companyCode",  companyCode);
+        params.put("definition_id", id);
+        params.put("company_code",  companyCode);
         try {
             approvalService.deleteDefinition(params);
             return ResponseEntity.ok(ApiResponse.success(null, "결재 유형이 삭제되었습니다."));
@@ -108,19 +108,19 @@ public class ApprovalController {
     @GetMapping("/templates")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTemplates(
             @RequestParam Map<String, Object> params,
-            @RequestAttribute("companyCode") String companyCode) {
-        params.put("companyCode", companyCode);
+            @RequestAttribute("company_code") String companyCode) {
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(approvalService.getTemplates(params)));
     }
 
     @GetMapping("/templates/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTemplate(
             @PathVariable Long id,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("templateId",  id);
-            params.put("companyCode", companyCode);
+            params.put("template_id",  id);
+            params.put("company_code", companyCode);
             return ResponseEntity.ok(ApiResponse.success(approvalService.getTemplate(params)));
         } catch (IllegalArgumentException e) {
             return ResponseEntity.status(404).body(ApiResponse.error(e.getMessage()));
@@ -130,12 +130,12 @@ public class ApprovalController {
     @PostMapping("/templates")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createTemplate(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         if (body.get("template_name") == null)
             return ResponseEntity.status(400).body(ApiResponse.error("템플릿명은 필수입니다."));
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.status(HttpStatus.CREATED)
                     .body(ApiResponse.success(approvalService.createTemplate(body), "결재선 템플릿이 생성되었습니다."));
@@ -149,11 +149,11 @@ public class ApprovalController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateTemplate(
             @PathVariable Long id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        body.put("templateId",  id);
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        body.put("template_id",  id);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.ok(ApiResponse.success(approvalService.updateTemplate(body), "결재선 템플릿이 수정되었습니다."));
         } catch (IllegalArgumentException e) {
@@ -167,10 +167,10 @@ public class ApprovalController {
     @DeleteMapping("/templates/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteTemplate(
             @PathVariable Long id,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("templateId",  id);
-        params.put("companyCode", companyCode);
+        params.put("template_id",  id);
+        params.put("company_code", companyCode);
         try {
             approvalService.deleteTemplate(params);
             return ResponseEntity.ok(ApiResponse.success(null, "결재선 템플릿이 삭제되었습니다."));
@@ -189,21 +189,21 @@ public class ApprovalController {
     @GetMapping("/requests")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getRequests(
             @RequestParam Map<String, Object> params,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        params.put("companyCode", companyCode);
-        params.put("userId",      userId);
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        params.put("company_code", companyCode);
+        params.put("user_id",      userId);
         return ResponseEntity.ok(ApiResponse.success(approvalService.getRequests(params)));
     }
 
     @GetMapping("/requests/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getRequest(
             @PathVariable Long id,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("requestId",  id);
-            params.put("companyCode", companyCode);
+            params.put("request_id",  id);
+            params.put("company_code", companyCode);
             return ResponseEntity.ok(ApiResponse.success(approvalService.getRequest(params)));
         } catch (IllegalArgumentException e) {
             return ResponseEntity.status(404).body(ApiResponse.error(e.getMessage()));
@@ -213,10 +213,10 @@ public class ApprovalController {
     @PostMapping("/requests")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createRequest(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.status(HttpStatus.CREATED)
                     .body(ApiResponse.success(approvalService.createRequest(body), "결재 요청이 생성되었습니다."));
@@ -231,12 +231,12 @@ public class ApprovalController {
     @PostMapping("/requests/{id}/cancel")
     public ResponseEntity<ApiResponse<Void>> cancelRequest(
             @PathVariable Long id,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("requestId",  id);
-        params.put("companyCode", companyCode);
-        params.put("userId",     userId);
+        params.put("request_id",  id);
+        params.put("company_code", companyCode);
+        params.put("user_id",     userId);
         try {
             approvalService.cancelRequest(params);
             return ResponseEntity.ok(ApiResponse.success(null, "결재 요청이 회수되었습니다."));
@@ -252,13 +252,13 @@ public class ApprovalController {
     public ResponseEntity<ApiResponse<Void>> postApprove(
             @PathVariable Long id,
             @RequestBody(required = false) Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         Map<String, Object> params = new HashMap<>();
         if (body != null) params.putAll(body);
-        params.put("requestId",  id);
-        params.put("companyCode", companyCode);
-        params.put("userId",     userId);
+        params.put("request_id",  id);
+        params.put("company_code", companyCode);
+        params.put("user_id",     userId);
         try {
             approvalService.postApprove(params);
             return ResponseEntity.ok(ApiResponse.success(null, "후결 처리가 완료되었습니다."));
@@ -276,11 +276,11 @@ public class ApprovalController {
 
     @GetMapping("/my-pending")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getMyPendingLines(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("userId",      userId);
+        params.put("company_code", companyCode);
+        params.put("user_id",      userId);
         return ResponseEntity.ok(ApiResponse.success(approvalService.getMyPendingLines(params)));
     }
 
@@ -288,16 +288,16 @@ public class ApprovalController {
     public ResponseEntity<ApiResponse<Void>> processApproval(
             @PathVariable Long lineId,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         String action = (String) body.get("action");
         if (!List.of("approved", "rejected").contains(action))
             return ResponseEntity.status(400).body(ApiResponse.error("액션은 approved 또는 rejected여야 합니다."));
 
         Map<String, Object> params = new HashMap<>(body);
-        params.put("lineId",     lineId);
-        params.put("companyCode", companyCode);
-        params.put("userId",     userId);
+        params.put("line_id",     lineId);
+        params.put("company_code", companyCode);
+        params.put("user_id",     userId);
         try {
             approvalService.processApproval(params);
             String msg = "approved".equals(action) ? "승인 처리되었습니다." : "반려 처리되었습니다.";
@@ -320,26 +320,26 @@ public class ApprovalController {
     @GetMapping("/proxy-settings/check/{targetUserId}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> checkActiveProxy(
             @PathVariable String targetUserId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("userId",      targetUserId);
-        params.put("companyCode", companyCode);
+        params.put("user_id",      targetUserId);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(approvalService.checkActiveProxy(params)));
     }
 
     @GetMapping("/proxy-settings")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getProxySettings(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(approvalService.getProxySettings(params)));
     }
 
     @PostMapping("/proxy-settings")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createProxySetting(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
-        body.put("companyCode", companyCode);
+            @RequestAttribute("company_code") String companyCode) {
+        body.put("company_code", companyCode);
         try {
             return ResponseEntity.status(HttpStatus.CREATED)
                     .body(ApiResponse.success(approvalService.createProxySetting(body), "대결 위임이 생성되었습니다."));
@@ -355,9 +355,9 @@ public class ApprovalController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateProxySetting(
             @PathVariable Long id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         body.put("id",          id);
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         try {
             return ResponseEntity.ok(ApiResponse.success(approvalService.updateProxySetting(body), "대결 위임이 수정되었습니다."));
         } catch (IllegalArgumentException e) {
@@ -371,10 +371,10 @@ public class ApprovalController {
     @DeleteMapping("/proxy-settings/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteProxySetting(
             @PathVariable Long id,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
         params.put("id",          id);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         try {
             approvalService.deleteProxySetting(params);
             return ResponseEntity.ok(ApiResponse.success(null, "대결 위임이 삭제되었습니다."));
diff --git a/backend-spring/src/main/java/com/erp/controller/AuditLogController.java b/backend-spring/src/main/java/com/erp/controller/AuditLogController.java
index e5b091d8..c4c9f1d2 100644
--- a/backend-spring/src/main/java/com/erp/controller/AuditLogController.java
+++ b/backend-spring/src/main/java/com/erp/controller/AuditLogController.java
@@ -27,7 +27,7 @@ public class AuditLogController {
      */
     @GetMapping
     public ResponseEntity<Map<String, Object>> getAuditLogs(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
             @RequestParam Map<String, Object> queryParams) {
 
@@ -35,11 +35,11 @@ public class AuditLogController {
 
         // SUPER_ADMIN: 쿼리 파라미터 companyCode 사용(없으면 전체); 일반: JWT companyCode 강제 적용
         String filterCompany = isSuperAdmin
-                ? (String) queryParams.get("companyCode")
+                ? (String) queryParams.get("company_code")
                 : companyCode;
 
         Map<String, Object> filters = new HashMap<>(queryParams);
-        filters.put("filterCompany", filterCompany);
+        filters.put("filter_company", filterCompany);
 
         int page = toInt(queryParams.get("page"), 1);
         int limit = toInt(queryParams.get("limit"), 50);
@@ -63,9 +63,9 @@ public class AuditLogController {
      */
     @GetMapping("/stats")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getAuditLogStats(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
-            @RequestParam(value = "companyCode", required = false) String queryCompanyCode,
+            @RequestParam(value = "company_code", required = false) String queryCompanyCode,
             @RequestParam(required = false, defaultValue = "30") int days) {
 
         boolean isSuperAdmin = isSuperAdmin(role);
@@ -81,9 +81,9 @@ public class AuditLogController {
      */
     @GetMapping("/users")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getAuditLogUsers(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
-            @RequestParam(value = "companyCode", required = false) String queryCompanyCode) {
+            @RequestParam(value = "company_code", required = false) String queryCompanyCode) {
 
         boolean isSuperAdmin = isSuperAdmin(role);
         String targetCompany = isSuperAdmin ? queryCompanyCode : companyCode;
@@ -98,14 +98,14 @@ public class AuditLogController {
      */
     @PostMapping
     public ResponseEntity<ApiResponse<Void>> createAuditLog(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestAttribute("role") String role,
             @RequestBody Map<String, Object> body,
             HttpServletRequest request) {
 
         String action = (String) body.get("action");
-        String resourceType = (String) body.get("resourceType");
+        String resourceType = (String) body.get("resource_type");
 
         if (action == null || action.isBlank() || resourceType == null || resourceType.isBlank()) {
             return ResponseEntity.badRequest()
@@ -113,17 +113,17 @@ public class AuditLogController {
         }
 
         Map<String, Object> params = new HashMap<>(body);
-        params.put("companyCode", companyCode);
-        params.put("userId", userId);
+        params.put("company_code", companyCode);
+        params.put("user_id", userId);
         // userName: request attribute(JWT) → body fallback
-        if (!params.containsKey("userName")) {
-            Object userName = request.getAttribute("userName");
+        if (!params.containsKey("user_name")) {
+            Object userName = request.getAttribute("user_name");
             if (userName != null) {
-                params.put("userName", userName);
+                params.put("user_name", userName);
             }
         }
-        params.put("ipAddress", resolveClientIp(request));
-        params.put("requestPath", request.getRequestURI());
+        params.put("ip_address", resolveClientIp(request));
+        params.put("request_path", request.getRequestURI());
 
         auditLogService.insertAuditLog(params);
         return ResponseEntity.ok(ApiResponse.success(null));
diff --git a/backend-spring/src/main/java/com/erp/controller/AuthController.java b/backend-spring/src/main/java/com/erp/controller/AuthController.java
index 8590c1fa..debdc520 100644
--- a/backend-spring/src/main/java/com/erp/controller/AuthController.java
+++ b/backend-spring/src/main/java/com/erp/controller/AuthController.java
@@ -29,7 +29,7 @@ public class AuthController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> login(
             @RequestBody Map<String, Object> body,
             HttpServletRequest request) {
-        String userId = (String) body.get("userId");
+        String userId = (String) body.get("user_id");
         String password = (String) body.get("password");
 
         if (!StringUtils.hasText(userId) || !StringUtils.hasText(password)) {
@@ -38,13 +38,13 @@ public class AuthController {
         }
 
         Map<String, Object> params = new HashMap<>(body);
-        params.put("remoteAddr", getRemoteAddr(request));
+        params.put("remote_addr", getRemoteAddr(request));
 
         Map<String, Object> result = authService.login(params);
 
-        if (Boolean.TRUE.equals(result.get("loginFailed"))) {
+        if (Boolean.TRUE.equals(result.get("login_failed"))) {
             return ResponseEntity.status(401)
-                    .body(ApiResponse.error((String) result.get("errorReason")));
+                    .body(ApiResponse.error((String) result.get("error_reason")));
         }
 
         return ResponseEntity.ok(ApiResponse.success(result, "로그인 성공"));
@@ -125,7 +125,7 @@ public class AuthController {
             return ResponseEntity.status(401).body(ApiResponse.error("인증 토큰이 필요합니다."));
         }
 
-        String companyCode = (String) body.get("companyCode");
+        String companyCode = (String) body.get("company_code");
         if (!StringUtils.hasText(companyCode)) {
             return ResponseEntity.badRequest().body(ApiResponse.error("전환할 회사 코드가 필요합니다."));
         }
@@ -143,12 +143,12 @@ public class AuthController {
      */
     @PostMapping("/signup")
     public ResponseEntity<ApiResponse<Void>> signup(@RequestBody Map<String, Object> body) {
-        String userId = (String) body.get("userId");
+        String userId = (String) body.get("user_id");
         String password = (String) body.get("password");
-        String userName = (String) body.get("userName");
-        String phoneNumber = (String) body.get("phoneNumber");
-        String licenseNumber = (String) body.get("licenseNumber");
-        String vehicleNumber = (String) body.get("vehicleNumber");
+        String userName = (String) body.get("user_name");
+        String phoneNumber = (String) body.get("phone_number");
+        String licenseNumber = (String) body.get("license_number");
+        String vehicleNumber = (String) body.get("vehicle_number");
 
         if (!StringUtils.hasText(userId) || !StringUtils.hasText(password)
                 || !StringUtils.hasText(userName) || !StringUtils.hasText(phoneNumber)
diff --git a/backend-spring/src/main/java/com/erp/controller/BarcodeLabelController.java b/backend-spring/src/main/java/com/erp/controller/BarcodeLabelController.java
index b8bc8342..bfa8e08d 100644
--- a/backend-spring/src/main/java/com/erp/controller/BarcodeLabelController.java
+++ b/backend-spring/src/main/java/com/erp/controller/BarcodeLabelController.java
@@ -18,9 +18,9 @@ public class BarcodeLabelController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getBarcodeLabelList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(barcodeLabelService.getBarcodeLabelList(params)));
     }
 
@@ -55,11 +55,11 @@ public class BarcodeLabelController {
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertBarcodeLabel(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("createdBy", userId);
+        body.put("company_code", companyCode);
+        body.put("created_by", userId);
         Map<String, Object> result = barcodeLabelService.insertBarcodeLabel(body);
         return ResponseEntity.status(201).body(ApiResponse.success(result, "라벨이 생성되었습니다."));
     }
@@ -67,11 +67,11 @@ public class BarcodeLabelController {
     @PostMapping("/{labelId}/copy")
     public ResponseEntity<ApiResponse<Map<String, Object>>> copyBarcodeLabel(
             @PathVariable String labelId,
-            @RequestAttribute(value = "userId", required = false) String userId) {
+            @RequestAttribute(value = "user_id", required = false) String userId) {
         String newLabelId = barcodeLabelService.copyBarcodeLabel(labelId, userId);
         if (newLabelId == null) return ResponseEntity.status(404).body(ApiResponse.error("복사할 라벨을 찾을 수 없습니다."));
         Map<String, Object> result = new HashMap<>();
-        result.put("labelId", newLabelId);
+        result.put("label_id", newLabelId);
         return ResponseEntity.status(201).body(ApiResponse.success(result, "라벨이 복사되었습니다."));
     }
 
@@ -87,7 +87,7 @@ public class BarcodeLabelController {
     @PutMapping("/{labelId}/layout")
     public ResponseEntity<ApiResponse<Map<String, Object>>> saveBarcodeLabelLayout(
             @PathVariable String labelId,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
         barcodeLabelService.saveBarcodeLabelLayout(labelId, body, userId);
         return ResponseEntity.ok(ApiResponse.success(null, "레이아웃이 저장되었습니다."));
diff --git a/backend-spring/src/main/java/com/erp/controller/BatchController.java b/backend-spring/src/main/java/com/erp/controller/BatchController.java
index e1adff37..23d1d8a9 100644
--- a/backend-spring/src/main/java/com/erp/controller/BatchController.java
+++ b/backend-spring/src/main/java/com/erp/controller/BatchController.java
@@ -18,28 +18,28 @@ public class BatchController {
 
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getBatchList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(batchService.getBatchList(params)));
     }
 
     @GetMapping("/connections")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getConnections(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(batchService.getConnections(companyCode)));
     }
 
     @GetMapping("/connections/{type}/tables")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTablesByType(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String type) {
         return ResponseEntity.ok(ApiResponse.success(batchService.getTables(type, null)));
     }
 
     @GetMapping("/connections/{type}/{connectionId}/tables")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTablesByTypeAndId(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String type,
             @PathVariable Long connectionId) {
         return ResponseEntity.ok(ApiResponse.success(batchService.getTables(type, connectionId)));
@@ -47,7 +47,7 @@ public class BatchController {
 
     @GetMapping("/connections/{type}/tables/{tableName}/columns")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getColumnsByType(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String type,
             @PathVariable String tableName) {
         return ResponseEntity.ok(ApiResponse.success(batchService.getColumns(type, null, tableName)));
@@ -55,7 +55,7 @@ public class BatchController {
 
     @GetMapping("/connections/{type}/{connectionId}/tables/{tableName}/columns")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getColumnsByTypeAndId(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String type,
             @PathVariable Long connectionId,
             @PathVariable String tableName) {
@@ -64,10 +64,10 @@ public class BatchController {
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getBatchInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         Map<String, Object> result = batchService.getBatchInfo(params);
         if (result == null) {
@@ -78,10 +78,10 @@ public class BatchController {
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertBatch(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("created_by", userId);
         body.put("updated_by", userId);
         Map<String, Object> created = batchService.insertBatch(body);
@@ -90,11 +90,11 @@ public class BatchController {
 
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateBatch(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("updated_by", userId);
         body.put("id", id);
         Map<String, Object> updated = batchService.updateBatch(body);
@@ -103,12 +103,12 @@ public class BatchController {
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteBatch(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("updatedBy", userId);
+        params.put("company_code", companyCode);
+        params.put("updated_by", userId);
         params.put("id", id);
         batchService.deleteBatch(params);
         return ResponseEntity.ok(ApiResponse.success(null, "배치 설정이 성공적으로 삭제되었습니다."));
diff --git a/backend-spring/src/main/java/com/erp/controller/BatchExecutionLogController.java b/backend-spring/src/main/java/com/erp/controller/BatchExecutionLogController.java
index 1aea11c0..8a8c6327 100644
--- a/backend-spring/src/main/java/com/erp/controller/BatchExecutionLogController.java
+++ b/backend-spring/src/main/java/com/erp/controller/BatchExecutionLogController.java
@@ -16,65 +16,65 @@ public class BatchExecutionLogController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getBatchExecutionLogList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(batchExecutionLogService.getBatchExecutionLogList(params)));
     }
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getBatchExecutionLogInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(batchExecutionLogService.getBatchExecutionLogInfo(params)));
     }
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertBatchExecutionLog(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(batchExecutionLogService.insertBatchExecutionLog(body)));
     }
 
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateBatchExecutionLog(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(batchExecutionLogService.updateBatchExecutionLog(body)));
     }
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteBatchExecutionLog(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(batchExecutionLogService.deleteBatchExecutionLog(params)));
     }
 
     @GetMapping("/latest/{batchConfigId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getBatchExecutionLogLatest(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long batchConfigId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("batchConfigId", batchConfigId);
+        params.put("company_code", companyCode);
+        params.put("batch_config_id", batchConfigId);
         return ResponseEntity.ok(ApiResponse.success(batchExecutionLogService.getBatchExecutionLogLatest(params)));
     }
 
     @GetMapping("/stats")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getBatchExecutionLogStats(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(batchExecutionLogService.getBatchExecutionLogStats(params)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/BatchManagementController.java b/backend-spring/src/main/java/com/erp/controller/BatchManagementController.java
index e200d598..34aafd6b 100644
--- a/backend-spring/src/main/java/com/erp/controller/BatchManagementController.java
+++ b/backend-spring/src/main/java/com/erp/controller/BatchManagementController.java
@@ -22,9 +22,9 @@ public class BatchManagementController {
     /** GET /api/batch-management/stats — 배치 대시보드 통계 */
     @GetMapping("/stats")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getBatchStats(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(batchManagementService.getBatchStats(params)));
     }
 
@@ -33,9 +33,9 @@ public class BatchManagementController {
     /** GET /api/batch-management/node-flows — 배치 설정에서 노드 플로우 선택용 목록 */
     @GetMapping("/node-flows")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getNodeFlows(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(batchManagementService.getNodeFlows(params)));
     }
 
@@ -44,7 +44,7 @@ public class BatchManagementController {
     /** GET /api/batch-management/connections — 사용 가능한 커넥션 목록 조회 */
     @GetMapping("/connections")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getAvailableConnections(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(
                 batchManagementService.getAvailableConnections(companyCode)));
     }
@@ -52,7 +52,7 @@ public class BatchManagementController {
     /** GET /api/batch-management/connections/:type/tables — 내부 DB 테이블 목록 */
     @GetMapping("/connections/{type}/tables")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTablesFromConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String type) {
         return ResponseEntity.ok(ApiResponse.success(
                 batchManagementService.getTablesFromConnection(type, null, companyCode)));
@@ -61,7 +61,7 @@ public class BatchManagementController {
     /** GET /api/batch-management/connections/:type/:id/tables — 외부 DB 테이블 목록 */
     @GetMapping("/connections/{type}/{id}/tables")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTablesFromExternalConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String type,
             @PathVariable Long id) {
         return ResponseEntity.ok(ApiResponse.success(
@@ -71,7 +71,7 @@ public class BatchManagementController {
     /** GET /api/batch-management/connections/:type/tables/:tableName/columns — 내부 DB 컬럼 정보 */
     @GetMapping("/connections/{type}/tables/{tableName}/columns")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTableColumns(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String type,
             @PathVariable String tableName) {
         return ResponseEntity.ok(ApiResponse.success(
@@ -81,7 +81,7 @@ public class BatchManagementController {
     /** GET /api/batch-management/connections/:type/:id/tables/:tableName/columns — 외부 DB 컬럼 정보 */
     @GetMapping("/connections/{type}/{id}/tables/{tableName}/columns")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getExternalTableColumns(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String type,
             @PathVariable Long id,
             @PathVariable String tableName) {
@@ -94,9 +94,9 @@ public class BatchManagementController {
     /** POST /api/batch-management/batch-configs — 배치 설정 생성 */
     @PostMapping("/batch-configs")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertBatchConfig(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         Map<String, Object> result = batchManagementService.insertBatchConfig(body);
         return ResponseEntity.status(201).body(ApiResponse.success(result, "배치 설정이 성공적으로 생성되었습니다."));
     }
@@ -104,19 +104,19 @@ public class BatchManagementController {
     /** GET /api/batch-management/batch-configs — 배치 설정 목록 조회 */
     @GetMapping("/batch-configs")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getBatchConfigList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(batchManagementService.getBatchConfigList(params)));
     }
 
     /** GET /api/batch-management/batch-configs/:id — 특정 배치 설정 조회 */
     @GetMapping("/batch-configs/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getBatchConfigInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         Map<String, Object> result = batchManagementService.getBatchConfigInfo(params);
         if (result == null) {
@@ -128,32 +128,32 @@ public class BatchManagementController {
     /** GET /api/batch-management/batch-configs/:id/sparkline — 최근 24시간 1시간 단위 실행 집계 */
     @GetMapping("/batch-configs/{id}/sparkline")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getBatchSparkline(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("batchConfigId", id);
+        params.put("company_code", companyCode);
+        params.put("batch_config_id", id);
         return ResponseEntity.ok(ApiResponse.success(batchManagementService.getBatchSparkline(params)));
     }
 
     /** GET /api/batch-management/batch-configs/:id/recent-logs — 최근 실행 로그 (최대 20건) */
     @GetMapping("/batch-configs/{id}/recent-logs")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getBatchRecentLogs(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("batchConfigId", id);
+        params.put("company_code", companyCode);
+        params.put("batch_config_id", id);
         return ResponseEntity.ok(ApiResponse.success(batchManagementService.getBatchRecentLogs(params)));
     }
 
     /** PUT /api/batch-management/batch-configs/:id — 배치 설정 업데이트 */
     @PutMapping("/batch-configs/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateBatchConfig(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(
                 batchManagementService.updateBatchConfig(body), "배치 설정이 성공적으로 업데이트되었습니다."));
@@ -162,10 +162,10 @@ public class BatchManagementController {
     /** POST /api/batch-management/batch-configs/:id/execute — 배치 수동 실행 */
     @PostMapping("/batch-configs/{id}/execute")
     public ResponseEntity<ApiResponse<Map<String, Object>>> executeBatchConfig(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(
                 batchManagementService.executeBatchConfig(params), "배치가 성공적으로 실행되었습니다."));
@@ -176,18 +176,18 @@ public class BatchManagementController {
     /** POST /api/batch-management/rest-api/preview — REST API 데이터 미리보기 */
     @PostMapping("/rest-api/preview")
     public ResponseEntity<ApiResponse<Map<String, Object>>> previewRestApiData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(batchManagementService.previewRestApiData(body)));
     }
 
     /** POST /api/batch-management/rest-api/save — REST API 배치 저장 */
     @PostMapping("/rest-api/save")
     public ResponseEntity<ApiResponse<Map<String, Object>>> saveRestApiBatch(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
                 batchManagementService.saveRestApiBatch(body), "REST API 배치가 성공적으로 저장되었습니다."));
     }
@@ -197,9 +197,9 @@ public class BatchManagementController {
     /** GET /api/batch-management/auth-services — 인증 토큰 서비스명 목록 조회 */
     @GetMapping("/auth-services")
     public ResponseEntity<ApiResponse<List<String>>> getAuthServiceNames(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(batchManagementService.getAuthServiceNames(params)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/BomController.java b/backend-spring/src/main/java/com/erp/controller/BomController.java
index d06ee485..12d445d7 100644
--- a/backend-spring/src/main/java/com/erp/controller/BomController.java
+++ b/backend-spring/src/main/java/com/erp/controller/BomController.java
@@ -23,46 +23,46 @@ public class BomController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getBomList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(bomService.getBomList(params)));
     }
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getBomInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(bomService.getBomInfo(params)));
     }
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertBom(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(bomService.insertBom(body)));
     }
 
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateBom(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(bomService.updateBom(body)));
     }
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteBom(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(bomService.deleteBom(params)));
     }
@@ -82,15 +82,15 @@ public class BomController {
 
     @GetMapping("/{bomId}/history")
     public ResponseEntity<ApiResponse<Object>> getBomHistory(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String bomId) {
         return ResponseEntity.ok(ApiResponse.success(bomService.getBomHistory(bomId, companyCode)));
     }
 
     @PostMapping("/{bomId}/history")
     public ResponseEntity<ApiResponse<Object>> addBomHistory(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable String bomId,
             @RequestBody Map<String, Object> body) {
         if (body.get("change_type") == null) {
@@ -104,32 +104,32 @@ public class BomController {
 
     @GetMapping("/{bomId}/versions")
     public ResponseEntity<ApiResponse<Object>> getBomVersions(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String bomId) {
         return ResponseEntity.ok(ApiResponse.success(bomService.getBomVersions(bomId, companyCode)));
     }
 
     @PostMapping("/{bomId}/versions")
     public ResponseEntity<ApiResponse<Object>> createBomVersion(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable String bomId,
             @RequestBody(required = false) Map<String, Object> body) {
-        String versionName = body != null && body.get("versionName") != null ? String.valueOf(body.get("versionName")) : null;
+        String versionName = body != null && body.get("version_name") != null ? String.valueOf(body.get("version_name")) : null;
         return ResponseEntity.ok(ApiResponse.success(bomService.createBomVersion(bomId, companyCode, userId, versionName)));
     }
 
     @PostMapping("/{bomId}/initialize-version")
     public ResponseEntity<ApiResponse<Object>> initializeBomVersion(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable String bomId) {
         return ResponseEntity.ok(ApiResponse.success(bomService.initializeBomVersion(bomId, companyCode, userId)));
     }
 
     @PostMapping("/{bomId}/versions/{versionId}/load")
     public ResponseEntity<ApiResponse<Object>> loadBomVersion(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String bomId,
             @PathVariable String versionId) {
         return ResponseEntity.ok(ApiResponse.success(bomService.loadBomVersion(bomId, versionId, companyCode)));
@@ -158,8 +158,8 @@ public class BomController {
     @PostMapping("/excel-upload")
     @SuppressWarnings("unchecked")
     public ResponseEntity<ApiResponse<Object>> createBomFromExcel(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
         List<Map<String, Object>> rows = (List<Map<String, Object>>) body.get("rows");
         if (rows == null || rows.isEmpty()) {
@@ -172,22 +172,22 @@ public class BomController {
     @PostMapping("/{bomId}/excel-upload-version")
     @SuppressWarnings("unchecked")
     public ResponseEntity<ApiResponse<Object>> createBomVersionFromExcel(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable String bomId,
             @RequestBody Map<String, Object> body) {
         List<Map<String, Object>> rows = (List<Map<String, Object>>) body.get("rows");
         if (rows == null || rows.isEmpty()) {
             return ResponseEntity.ok(ApiResponse.error("업로드할 데이터가 없습니다"));
         }
-        String versionName = body.get("versionName") != null ? String.valueOf(body.get("versionName")) : null;
+        String versionName = body.get("version_name") != null ? String.valueOf(body.get("version_name")) : null;
         Map<String, Object> result = bomService.createBomVersionFromExcel(bomId, companyCode, userId, rows, versionName);
         return ResponseEntity.ok(ApiResponse.success(result));
     }
 
     @GetMapping("/{bomId}/excel-download")
     public ResponseEntity<ApiResponse<Object>> downloadBomExcelData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String bomId) {
         return ResponseEntity.ok(ApiResponse.success(bomService.downloadBomExcelData(bomId, companyCode)));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/BookingController.java b/backend-spring/src/main/java/com/erp/controller/BookingController.java
index 2368d520..4ae4e8ff 100644
--- a/backend-spring/src/main/java/com/erp/controller/BookingController.java
+++ b/backend-spring/src/main/java/com/erp/controller/BookingController.java
@@ -49,8 +49,8 @@ public class BookingController {
             @RequestBody(required = false) Map<String, Object> body) {
         Map<String, Object> params = new LinkedHashMap<>();
         params.put("id", id);
-        if (body != null && body.containsKey("rejectionReason")) {
-            params.put("rejectionReason", body.get("rejectionReason"));
+        if (body != null && body.containsKey("rejection_reason")) {
+            params.put("rejection_reason", body.get("rejection_reason"));
         }
         return ResponseEntity.ok(ApiResponse.success(bookingService.rejectBooking(params)));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/ButtonActionStandardController.java b/backend-spring/src/main/java/com/erp/controller/ButtonActionStandardController.java
index 77415ce4..1f5fd7e8 100644
--- a/backend-spring/src/main/java/com/erp/controller/ButtonActionStandardController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ButtonActionStandardController.java
@@ -47,7 +47,7 @@ public class ButtonActionStandardController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> getButtonAction(
             @PathVariable String actionType) {
         Map<String, Object> params = new HashMap<>();
-        params.put("actionType", actionType);
+        params.put("action_type", actionType);
         Map<String, Object> data = buttonActionStandardService.getButtonAction(params);
         if (data == null) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
@@ -62,7 +62,7 @@ public class ButtonActionStandardController {
      */
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createButtonAction(
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
         // 필수 필드 검증
         if (body.get("action_type") == null || body.get("action_name") == null) {
@@ -72,7 +72,7 @@ public class ButtonActionStandardController {
         body.put("created_by", userId);
         body.put("updated_by", userId);
         // selectButtonActionByType 에서 actionType 키 사용
-        body.put("actionType", body.get("action_type"));
+        body.put("action_type", body.get("action_type"));
 
         Map<String, Object> data = buttonActionStandardService.createButtonAction(body);
         return ResponseEntity.status(HttpStatus.CREATED)
@@ -85,9 +85,9 @@ public class ButtonActionStandardController {
      */
     @PutMapping("/sort-order/bulk")
     public ResponseEntity<ApiResponse<Void>> updateButtonActionSortOrder(
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        Object raw = body.get("buttonActions");
+        Object raw = body.get("button_actions");
         if (!(raw instanceof List)) {
             return ResponseEntity.status(HttpStatus.BAD_REQUEST)
                     .body(ApiResponse.error("유효하지 않은 데이터 형식입니다."));
@@ -105,9 +105,9 @@ public class ButtonActionStandardController {
     @PutMapping("/{actionType}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateButtonAction(
             @PathVariable String actionType,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("actionType", actionType);
+        body.put("action_type", actionType);
         body.put("updated_by", userId);
         Map<String, Object> data = buttonActionStandardService.updateButtonAction(body);
         if (data == null) {
@@ -125,7 +125,7 @@ public class ButtonActionStandardController {
     public ResponseEntity<ApiResponse<Void>> deleteButtonAction(
             @PathVariable String actionType) {
         Map<String, Object> params = new HashMap<>();
-        params.put("actionType", actionType);
+        params.put("action_type", actionType);
         boolean deleted = buttonActionStandardService.deleteButtonAction(params);
         if (!deleted) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
diff --git a/backend-spring/src/main/java/com/erp/controller/ButtonDataflowController.java b/backend-spring/src/main/java/com/erp/controller/ButtonDataflowController.java
index 4f142e4e..fea04547 100644
--- a/backend-spring/src/main/java/com/erp/controller/ButtonDataflowController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ButtonDataflowController.java
@@ -66,7 +66,7 @@ public class ButtonDataflowController {
     /** GET /diagrams */
     @GetMapping("/diagrams")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getAvailableDiagrams(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             if (companyCode == null || companyCode.isBlank()) {
                 return ResponseEntity.status(400).body(ApiResponse.error("회사 코드가 필요합니다."));
@@ -82,7 +82,7 @@ public class ButtonDataflowController {
     @GetMapping("/diagrams/{diagramId}/relationships")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getDiagramRelationships(
             @PathVariable int diagramId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             if (companyCode == null || companyCode.isBlank()) {
                 return ResponseEntity.status(400).body(ApiResponse.error("회사 코드가 필요합니다."));
@@ -103,7 +103,7 @@ public class ButtonDataflowController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> getRelationshipPreview(
             @PathVariable int    diagramId,
             @PathVariable String relationshipId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             if (companyCode == null || companyCode.isBlank()) {
                 return ResponseEntity.status(400).body(ApiResponse.error("관계도 ID, 관계 ID, 회사 코드가 필요합니다."));
@@ -126,7 +126,7 @@ public class ButtonDataflowController {
     /** POST /execute-optimized (메인 최적화 실행) */
     @PostMapping("/execute-optimized")
     public ResponseEntity<ApiResponse<Map<String, Object>>> executeOptimizedButton(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
         return doExecuteOptimized(companyCode, body);
     }
@@ -134,7 +134,7 @@ public class ButtonDataflowController {
     /** POST /execute (레거시 — executeOptimized 와 동일) */
     @PostMapping("/execute")
     public ResponseEntity<ApiResponse<Map<String, Object>>> executeLegacy(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
         return doExecuteOptimized(companyCode, body);
     }
@@ -142,7 +142,7 @@ public class ButtonDataflowController {
     /** POST /execute-background (레거시 — executeOptimized 와 동일) */
     @PostMapping("/execute-background")
     public ResponseEntity<ApiResponse<Map<String, Object>>> executeBackground(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
         return doExecuteOptimized(companyCode, body);
     }
@@ -150,10 +150,10 @@ public class ButtonDataflowController {
     /** POST /execute-simple */
     @PostMapping("/execute-simple")
     public ResponseEntity<ApiResponse<Map<String, Object>>> executeSimpleDataflow(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
         try {
-            body.put("companyCode", companyCode);
+            body.put("company_code", companyCode);
             return ResponseEntity.ok(ApiResponse.success(service.executeSimpleDataflow(body)));
         } catch (Exception e) {
             log.error("단순 데이터플로우 실행 오류", e);
@@ -185,7 +185,7 @@ public class ButtonDataflowController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> getJoinRelationship(
             @PathVariable String mainTable,
             @PathVariable String detailTable,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             if (mainTable == null || detailTable == null) {
                 return ResponseEntity.status(400).body(ApiResponse.error("메인 테이블과 디테일 테이블이 필요합니다."));
@@ -205,13 +205,13 @@ public class ButtonDataflowController {
     private ResponseEntity<ApiResponse<Map<String, Object>>> doExecuteOptimized(
             String companyCode, Map<String, Object> body) {
         try {
-            String buttonId   = (String) body.get("buttonId");
-            String actionType = (String) body.get("actionType");
+            String buttonId   = (String) body.get("button_id");
+            String actionType = (String) body.get("action_type");
 
             if (buttonId == null || actionType == null) {
                 return ResponseEntity.status(400).body(ApiResponse.error("필수 파라미터가 누락되었습니다."));
             }
-            body.put("companyCode", companyCode);
+            body.put("company_code", companyCode);
             return ResponseEntity.ok(ApiResponse.success(service.executeOptimizedButton(body)));
         } catch (Exception e) {
             log.error("버튼 실행 오류", e);
diff --git a/backend-spring/src/main/java/com/erp/controller/CascadingAutoFillController.java b/backend-spring/src/main/java/com/erp/controller/CascadingAutoFillController.java
index 3517e8b6..0c1d21cf 100644
--- a/backend-spring/src/main/java/com/erp/controller/CascadingAutoFillController.java
+++ b/backend-spring/src/main/java/com/erp/controller/CascadingAutoFillController.java
@@ -19,27 +19,27 @@ public class CascadingAutoFillController {
     // Pipeline api_test compatibility alias
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getGroupListAlias(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(cascadingAutoFillService.getCascadingAutoFillGroupList(params)));
     }
 
     @GetMapping("/groups")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getGroupList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(cascadingAutoFillService.getCascadingAutoFillGroupList(params)));
     }
 
     @GetMapping("/groups/{groupCode}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getGroupDetail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String groupCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("groupCode", groupCode);
+        params.put("company_code", companyCode);
+        params.put("group_code", groupCode);
         Map<String, Object> result = cascadingAutoFillService.getCascadingAutoFillGroupDetail(params);
         if (result == null) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
@@ -50,20 +50,20 @@ public class CascadingAutoFillController {
 
     @PostMapping("/groups")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createGroup(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.status(HttpStatus.CREATED)
                 .body(ApiResponse.success(cascadingAutoFillService.insertCascadingAutoFillGroup(body)));
     }
 
     @PutMapping("/groups/{groupCode}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateGroup(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String groupCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("groupCode", groupCode);
+        body.put("company_code", companyCode);
+        body.put("group_code", groupCode);
         Map<String, Object> result = cascadingAutoFillService.updateCascadingAutoFillGroup(body);
         if (result == null) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
@@ -74,11 +74,11 @@ public class CascadingAutoFillController {
 
     @DeleteMapping("/groups/{groupCode}")
     public ResponseEntity<ApiResponse<Void>> deleteGroup(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String groupCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("groupCode", groupCode);
+        params.put("company_code", companyCode);
+        params.put("group_code", groupCode);
         boolean deleted = cascadingAutoFillService.deleteCascadingAutoFillGroup(params);
         if (!deleted) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
@@ -89,11 +89,11 @@ public class CascadingAutoFillController {
 
     @GetMapping("/options/{groupCode}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getMasterOptions(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String groupCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("groupCode", groupCode);
+        params.put("company_code", companyCode);
+        params.put("group_code", groupCode);
         List<Map<String, Object>> result = cascadingAutoFillService.getAutoFillMasterOptions(params);
         if (result == null) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
@@ -104,7 +104,7 @@ public class CascadingAutoFillController {
 
     @GetMapping("/data/{groupCode}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getAutoFillData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String groupCode,
             @RequestParam(required = false) String masterValue) {
         if (masterValue == null || masterValue.isBlank()) {
@@ -112,9 +112,9 @@ public class CascadingAutoFillController {
                     .body(ApiResponse.error("masterValue 파라미터가 필요합니다."));
         }
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("groupCode", groupCode);
-        params.put("masterValue", masterValue);
+        params.put("company_code", companyCode);
+        params.put("group_code", groupCode);
+        params.put("master_value", masterValue);
         Map<String, Object> result = cascadingAutoFillService.getAutoFillData(params);
         if (result == null) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
diff --git a/backend-spring/src/main/java/com/erp/controller/CascadingConditionController.java b/backend-spring/src/main/java/com/erp/controller/CascadingConditionController.java
index 0d0b3220..39894d61 100644
--- a/backend-spring/src/main/java/com/erp/controller/CascadingConditionController.java
+++ b/backend-spring/src/main/java/com/erp/controller/CascadingConditionController.java
@@ -17,65 +17,65 @@ public class CascadingConditionController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCascadingConditionListAlias(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(cascadingConditionService.getCascadingConditionList(params)));
     }
 
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCascadingConditionList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(cascadingConditionService.getCascadingConditionList(params)));
     }
 
     @GetMapping("/filtered-options/{relationCode}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getFilteredOptions(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String relationCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
-        params.put("relationCode", relationCode);
+        params.put("company_code", companyCode);
+        params.put("relation_code", relationCode);
         return ResponseEntity.ok(ApiResponse.success(cascadingConditionService.getFilteredOptions(params)));
     }
 
     @GetMapping("/{conditionId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCascadingConditionInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long conditionId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("conditionId", conditionId);
+        params.put("company_code", companyCode);
+        params.put("condition_id", conditionId);
         return ResponseEntity.ok(ApiResponse.success(cascadingConditionService.getCascadingConditionInfo(params)));
     }
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertCascadingCondition(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(cascadingConditionService.insertCascadingCondition(body)));
     }
 
     @PutMapping("/{conditionId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateCascadingCondition(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long conditionId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("conditionId", conditionId);
+        body.put("company_code", companyCode);
+        body.put("condition_id", conditionId);
         return ResponseEntity.ok(ApiResponse.success(cascadingConditionService.updateCascadingCondition(body)));
     }
 
     @DeleteMapping("/{conditionId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteCascadingCondition(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long conditionId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("conditionId", conditionId);
+        params.put("company_code", companyCode);
+        params.put("condition_id", conditionId);
         return ResponseEntity.ok(ApiResponse.success(cascadingConditionService.deleteCascadingCondition(params)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/CascadingHierarchyController.java b/backend-spring/src/main/java/com/erp/controller/CascadingHierarchyController.java
index f37c9020..09fe1383 100644
--- a/backend-spring/src/main/java/com/erp/controller/CascadingHierarchyController.java
+++ b/backend-spring/src/main/java/com/erp/controller/CascadingHierarchyController.java
@@ -19,27 +19,27 @@ public class CascadingHierarchyController {
     // Pipeline api_test compatibility alias
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getGroupListAlias(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(cascadingHierarchyService.getCascadingHierarchyGroupList(params)));
     }
 
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getGroupList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(cascadingHierarchyService.getCascadingHierarchyGroupList(params)));
     }
 
     @GetMapping("/{groupCode}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getGroupDetail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String groupCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("groupCode", groupCode);
+        params.put("company_code", companyCode);
+        params.put("group_code", groupCode);
         Map<String, Object> result = cascadingHierarchyService.getCascadingHierarchyGroupDetail(params);
         if (result == null) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
@@ -50,24 +50,24 @@ public class CascadingHierarchyController {
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createGroup(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        if (userId != null) body.put("userId", userId);
+        body.put("company_code", companyCode);
+        if (userId != null) body.put("user_id", userId);
         return ResponseEntity.status(HttpStatus.CREATED)
                 .body(ApiResponse.success(cascadingHierarchyService.insertCascadingHierarchyGroup(body)));
     }
 
     @PutMapping("/{groupCode}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateGroup(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String groupCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("groupCode", groupCode);
-        if (userId != null) body.put("userId", userId);
+        body.put("company_code", companyCode);
+        body.put("group_code", groupCode);
+        if (userId != null) body.put("user_id", userId);
         Map<String, Object> result = cascadingHierarchyService.updateCascadingHierarchyGroup(body);
         if (result == null) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
@@ -78,11 +78,11 @@ public class CascadingHierarchyController {
 
     @DeleteMapping("/{groupCode}")
     public ResponseEntity<ApiResponse<Void>> deleteGroup(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String groupCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("groupCode", groupCode);
+        params.put("company_code", companyCode);
+        params.put("group_code", groupCode);
         boolean deleted = cascadingHierarchyService.deleteCascadingHierarchyGroup(params);
         if (!deleted) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
@@ -93,11 +93,11 @@ public class CascadingHierarchyController {
 
     @PostMapping("/{groupCode}/levels")
     public ResponseEntity<ApiResponse<Map<String, Object>>> addLevel(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String groupCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("groupCode", groupCode);
+        body.put("company_code", companyCode);
+        body.put("group_code", groupCode);
         Map<String, Object> result = cascadingHierarchyService.addCascadingHierarchyLevel(body);
         if (result == null) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
@@ -108,11 +108,11 @@ public class CascadingHierarchyController {
 
     @PutMapping("/levels/{levelId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateLevel(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long levelId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("levelId", levelId);
+        body.put("company_code", companyCode);
+        body.put("level_id", levelId);
         Map<String, Object> result = cascadingHierarchyService.updateCascadingHierarchyLevel(body);
         if (result == null) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
@@ -123,11 +123,11 @@ public class CascadingHierarchyController {
 
     @DeleteMapping("/levels/{levelId}")
     public ResponseEntity<ApiResponse<Void>> deleteLevel(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long levelId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("levelId", levelId);
+        params.put("company_code", companyCode);
+        params.put("level_id", levelId);
         boolean deleted = cascadingHierarchyService.deleteCascadingHierarchyLevel(params);
         if (!deleted) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
@@ -138,15 +138,15 @@ public class CascadingHierarchyController {
 
     @GetMapping("/{groupCode}/options/{levelOrder}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getLevelOptions(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String groupCode,
             @PathVariable Integer levelOrder,
             @RequestParam(required = false) String parentValue) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("groupCode", groupCode);
-        params.put("levelOrder", levelOrder);
-        if (parentValue != null) params.put("parentValue", parentValue);
+        params.put("company_code", companyCode);
+        params.put("group_code", groupCode);
+        params.put("level_order", levelOrder);
+        if (parentValue != null) params.put("parent_value", parentValue);
         Map<String, Object> result = cascadingHierarchyService.getLevelOptions(params);
         if (result == null) {
             return ResponseEntity.status(HttpStatus.NOT_FOUND)
diff --git a/backend-spring/src/main/java/com/erp/controller/CascadingMutualExclusionController.java b/backend-spring/src/main/java/com/erp/controller/CascadingMutualExclusionController.java
index 82287dcb..739afd4d 100644
--- a/backend-spring/src/main/java/com/erp/controller/CascadingMutualExclusionController.java
+++ b/backend-spring/src/main/java/com/erp/controller/CascadingMutualExclusionController.java
@@ -22,9 +22,9 @@ public class CascadingMutualExclusionController {
     /** GET /list — 목록 조회 (alias) */
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCascadingMutualExclusionListAlias(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingMutualExclusionService.getCascadingMutualExclusionList(params)));
     }
@@ -32,9 +32,9 @@ public class CascadingMutualExclusionController {
     /** GET / — 목록 조회 */
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCascadingMutualExclusionList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingMutualExclusionService.getCascadingMutualExclusionList(params)));
     }
@@ -42,10 +42,10 @@ public class CascadingMutualExclusionController {
     /** GET /{exclusionId} — 상세 조회 */
     @GetMapping("/{exclusionId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCascadingMutualExclusionInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long exclusionId) {
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", exclusionId);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingMutualExclusionService.getCascadingMutualExclusionInfo(params)));
@@ -54,9 +54,9 @@ public class CascadingMutualExclusionController {
     /** POST / — 생성 */
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertCascadingMutualExclusion(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingMutualExclusionService.insertCascadingMutualExclusion(body)));
     }
@@ -64,10 +64,10 @@ public class CascadingMutualExclusionController {
     /** PUT /{exclusionId} — 수정 */
     @PutMapping("/{exclusionId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateCascadingMutualExclusion(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long exclusionId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", exclusionId);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingMutualExclusionService.updateCascadingMutualExclusion(body)));
@@ -76,10 +76,10 @@ public class CascadingMutualExclusionController {
     /** DELETE /{exclusionId} — 하드 삭제 */
     @DeleteMapping("/{exclusionId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteCascadingMutualExclusion(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long exclusionId) {
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", exclusionId);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingMutualExclusionService.deleteCascadingMutualExclusion(params)));
@@ -87,14 +87,14 @@ public class CascadingMutualExclusionController {
 
     /**
      * POST /validate/{exclusionCode} — 상호 배제 검증
-     * body: { "fieldValues": { "fieldA": "val1", "fieldB": "val1" } }
+     * body: { "field_values": { "field_a": "val1", "field_b": "val1" } }
      */
     @PostMapping("/validate/{exclusionCode}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> validateCascadingMutualExclusion(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String exclusionCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("code", exclusionCode);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingMutualExclusionService.validateCascadingMutualExclusion(body)));
@@ -106,15 +106,15 @@ public class CascadingMutualExclusionController {
      */
     @GetMapping("/options/{exclusionCode}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getExcludedOptions(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String exclusionCode,
             @RequestParam(required = false) String currentField,
             @RequestParam(required = false) String selectedValues) {
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("code", exclusionCode);
-        params.put("currentField", currentField);
-        params.put("selectedValues", selectedValues);
+        params.put("current_field", currentField);
+        params.put("selected_values", selectedValues);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingMutualExclusionService.getExcludedOptions(params)));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/CascadingRelationController.java b/backend-spring/src/main/java/com/erp/controller/CascadingRelationController.java
index c60940aa..ec6dd787 100644
--- a/backend-spring/src/main/java/com/erp/controller/CascadingRelationController.java
+++ b/backend-spring/src/main/java/com/erp/controller/CascadingRelationController.java
@@ -22,9 +22,9 @@ public class CascadingRelationController {
     /** GET /api/cascading-relation/list — 목록 조회 (alias) */
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCascadingRelationListAlias(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingRelationService.getCascadingRelationList(params)));
     }
@@ -32,9 +32,9 @@ public class CascadingRelationController {
     /** GET /api/cascading-relation — 목록 조회 */
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCascadingRelationList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingRelationService.getCascadingRelationList(params)));
     }
@@ -42,10 +42,10 @@ public class CascadingRelationController {
     /** GET /api/cascading-relation/{id} — 상세 조회 */
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCascadingRelationInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingRelationService.getCascadingRelationInfo(params)));
@@ -54,10 +54,10 @@ public class CascadingRelationController {
     /** GET /api/cascading-relation/code/{code} — 코드로 단건 조회 */
     @GetMapping("/code/{code}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCascadingRelationByCode(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String code) {
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("code", code);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingRelationService.getCascadingRelationByCode(params)));
@@ -69,10 +69,10 @@ public class CascadingRelationController {
      */
     @GetMapping("/parent-options/{code}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getParentOptions(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String code) {
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("code", code);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingRelationService.getParentOptions(params)));
@@ -84,15 +84,15 @@ public class CascadingRelationController {
      */
     @GetMapping("/options/{code}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCascadingOptions(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String code,
             @RequestParam(required = false) String parentValue,
             @RequestParam(required = false) String parentValues) {
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("code", code);
-        params.put("parentValue", parentValue);
-        params.put("parentValues", parentValues);
+        params.put("parent_value", parentValue);
+        params.put("parent_values", parentValues);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingRelationService.getCascadingOptions(params)));
     }
@@ -100,11 +100,11 @@ public class CascadingRelationController {
     /** POST /api/cascading-relation — 생성 */
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertCascadingRelation(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("userId", userId != null ? userId : "system");
+        body.put("company_code", companyCode);
+        body.put("user_id", userId != null ? userId : "system");
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingRelationService.insertCascadingRelation(body)));
     }
@@ -112,12 +112,12 @@ public class CascadingRelationController {
     /** PUT /api/cascading-relation/{id} — 수정 */
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateCascadingRelation(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("userId", userId != null ? userId : "system");
+        body.put("company_code", companyCode);
+        body.put("user_id", userId != null ? userId : "system");
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingRelationService.updateCascadingRelation(body)));
@@ -126,12 +126,12 @@ public class CascadingRelationController {
     /** DELETE /api/cascading-relation/{id} — 소프트 삭제 (is_active = 'N') */
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteCascadingRelation(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable Long id) {
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("userId", userId != null ? userId : "system");
+        params.put("company_code", companyCode);
+        params.put("user_id", userId != null ? userId : "system");
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(
                 cascadingRelationService.deleteCascadingRelation(params)));
diff --git a/backend-spring/src/main/java/com/erp/controller/CategoryTreeController.java b/backend-spring/src/main/java/com/erp/controller/CategoryTreeController.java
index 287a7f16..e98b38dc 100644
--- a/backend-spring/src/main/java/com/erp/controller/CategoryTreeController.java
+++ b/backend-spring/src/main/java/com/erp/controller/CategoryTreeController.java
@@ -25,7 +25,7 @@ public class CategoryTreeController {
      */
     @GetMapping("/test/all-category-keys")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCategoryTreeKeyList(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         List<Map<String, Object>> keys = categoryTreeService.getCategoryTreeKeyList(companyCode);
         return ResponseEntity.ok(ApiResponse.success(keys));
@@ -37,7 +37,7 @@ public class CategoryTreeController {
      */
     @GetMapping("/test/{tableName}/{columnName}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCategoryTreeList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @PathVariable String columnName) {
 
@@ -51,7 +51,7 @@ public class CategoryTreeController {
      */
     @GetMapping("/test/{tableName}/{columnName}/flat")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCategoryTreeFlatList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @PathVariable String columnName) {
 
@@ -65,7 +65,7 @@ public class CategoryTreeController {
      */
     @GetMapping("/test/value/{valueId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCategoryTreeInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int valueId) {
 
         Map<String, Object> value = categoryTreeService.getCategoryTreeInfo(companyCode, valueId);
@@ -81,19 +81,19 @@ public class CategoryTreeController {
      */
     @PostMapping("/test/value")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertCategoryTree(
-            @RequestAttribute("companyCode") String userCompanyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String userCompanyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
-        if (body.get("tableName") == null || body.get("columnName") == null
-                || body.get("valueCode") == null || body.get("valueLabel") == null) {
+        if (body.get("table_name") == null || body.get("column_name") == null
+                || body.get("value_code") == null || body.get("value_label") == null) {
             return ResponseEntity.badRequest()
                     .body(ApiResponse.error("tableName, columnName, valueCode, valueLabel은 필수입니다"));
         }
 
         // 최고 관리자(*) 는 targetCompanyCode 로 회사 코드 오버라이드 가능
         String companyCode = userCompanyCode;
-        String targetCompanyCode = (String) body.get("targetCompanyCode");
+        String targetCompanyCode = (String) body.get("target_company_code");
         if (targetCompanyCode != null && "*".equals(userCompanyCode)) {
             companyCode = targetCompanyCode;
         }
@@ -115,8 +115,8 @@ public class CategoryTreeController {
      */
     @PutMapping("/test/value/{valueId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateCategoryTree(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable int valueId,
             @RequestBody Map<String, Object> body) {
 
@@ -140,7 +140,7 @@ public class CategoryTreeController {
      */
     @GetMapping("/test/value/{valueId}/can-delete")
     public ResponseEntity<ApiResponse<Map<String, Object>>> checkCanDelete(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int valueId) {
 
         Map<String, Object> result = categoryTreeService.checkCanDelete(companyCode, valueId);
@@ -153,7 +153,7 @@ public class CategoryTreeController {
      */
     @DeleteMapping("/test/value/{valueId}")
     public ResponseEntity<ApiResponse<Void>> deleteCategoryTree(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int valueId) {
 
         try {
@@ -182,7 +182,7 @@ public class CategoryTreeController {
      */
     @GetMapping("/test/columns/{tableName}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCategoryTreeColumnList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName) {
 
         List<Map<String, Object>> columns = categoryTreeService.getCategoryTreeColumnList(companyCode, tableName);
diff --git a/backend-spring/src/main/java/com/erp/controller/CategoryValueCascadingController.java b/backend-spring/src/main/java/com/erp/controller/CategoryValueCascadingController.java
index 866015a3..20ef17c9 100644
--- a/backend-spring/src/main/java/com/erp/controller/CategoryValueCascadingController.java
+++ b/backend-spring/src/main/java/com/erp/controller/CategoryValueCascadingController.java
@@ -18,20 +18,20 @@ public class CategoryValueCascadingController {
     /** GET /groups → 그룹 목록 조회 */
     @GetMapping("/groups")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCategoryValueCascadingGroupList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(categoryValueCascadingService.getCategoryValueCascadingGroupList(params)));
     }
 
     /** GET /groups/{groupId} → 그룹 상세 조회 (매핑 포함) */
     @GetMapping("/groups/{groupId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCategoryValueCascadingGroupInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long groupId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("groupId", groupId);
+        params.put("company_code", companyCode);
+        params.put("group_id", groupId);
         Map<String, Object> result = categoryValueCascadingService.getCategoryValueCascadingGroupInfo(params);
         if (result == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("카테고리 값 연쇄관계 그룹을 찾을 수 없습니다."));
@@ -42,10 +42,10 @@ public class CategoryValueCascadingController {
     /** GET /code/{code} → 관계 코드로 조회 */
     @GetMapping("/code/{code}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCategoryValueCascadingGroupByCode(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String code) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("code", code);
         Map<String, Object> result = categoryValueCascadingService.getCategoryValueCascadingGroupByCode(params);
         if (result == null) {
@@ -57,52 +57,52 @@ public class CategoryValueCascadingController {
     /** POST /groups → 그룹 생성 */
     @PostMapping("/groups")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertCategoryValueCascadingGroup(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(categoryValueCascadingService.insertCategoryValueCascadingGroup(body)));
     }
 
     /** PUT /groups/{groupId} → 그룹 수정 */
     @PutMapping("/groups/{groupId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateCategoryValueCascadingGroup(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long groupId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("groupId", groupId);
+        body.put("company_code", companyCode);
+        body.put("group_id", groupId);
         return ResponseEntity.ok(ApiResponse.success(categoryValueCascadingService.updateCategoryValueCascadingGroup(body)));
     }
 
     /** DELETE /groups/{groupId} → 그룹 소프트 삭제 */
     @DeleteMapping("/groups/{groupId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteCategoryValueCascadingGroup(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long groupId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("groupId", groupId);
+        params.put("company_code", companyCode);
+        params.put("group_id", groupId);
         return ResponseEntity.ok(ApiResponse.success(categoryValueCascadingService.deleteCategoryValueCascadingGroup(params)));
     }
 
     /** POST /groups/{groupId}/mappings → 매핑 일괄 저장 */
     @PostMapping("/groups/{groupId}/mappings")
     public ResponseEntity<ApiResponse<Map<String, Object>>> saveCategoryValueCascadingMappings(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long groupId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("groupId", groupId);
+        body.put("company_code", companyCode);
+        body.put("group_id", groupId);
         return ResponseEntity.ok(ApiResponse.success(categoryValueCascadingService.saveCategoryValueCascadingMappings(body)));
     }
 
     /** GET /parent-options/{code} → 부모 카테고리 값 목록 */
     @GetMapping("/parent-options/{code}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCategoryValueCascadingParentOptions(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String code,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("code", code);
         return ResponseEntity.ok(ApiResponse.success(categoryValueCascadingService.getCategoryValueCascadingParentOptions(params)));
     }
@@ -110,10 +110,10 @@ public class CategoryValueCascadingController {
     /** GET /child-options/{code} → 자식 카테고리 값 목록 */
     @GetMapping("/child-options/{code}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCategoryValueCascadingChildOptions(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String code,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("code", code);
         return ResponseEntity.ok(ApiResponse.success(categoryValueCascadingService.getCategoryValueCascadingChildOptions(params)));
     }
@@ -121,10 +121,10 @@ public class CategoryValueCascadingController {
     /** GET /options/{code} → 연쇄 옵션 조회 (parentValue/parentValues 파라미터) */
     @GetMapping("/options/{code}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCategoryValueCascadingOptions(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String code,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("code", code);
         return ResponseEntity.ok(ApiResponse.success(categoryValueCascadingService.getCategoryValueCascadingOptions(params)));
     }
@@ -132,11 +132,11 @@ public class CategoryValueCascadingController {
     /** GET /table/{tableName}/mappings → 테이블별 매핑 조회 */
     @GetMapping("/table/{tableName}/mappings")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCategoryValueCascadingMappingsByTable(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("tableName", tableName);
+        params.put("company_code", companyCode);
+        params.put("table_name", tableName);
         return ResponseEntity.ok(ApiResponse.success(categoryValueCascadingService.getCategoryValueCascadingMappingsByTable(params)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/CodeMergeController.java b/backend-spring/src/main/java/com/erp/controller/CodeMergeController.java
index 8e122e96..4874ad79 100644
--- a/backend-spring/src/main/java/com/erp/controller/CodeMergeController.java
+++ b/backend-spring/src/main/java/com/erp/controller/CodeMergeController.java
@@ -20,9 +20,9 @@ public class CodeMergeController {
     /** POST /api/code-merge/merge-all-tables — columnName 기준 전체 테이블 코드 병합 */
     @PostMapping("/merge-all-tables")
     public ResponseEntity<ApiResponse<Map<String, Object>>> mergeAllTables(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
                 codeMergeService.mergeAllTables(body),
                 "코드 병합이 완료되었습니다."));
@@ -39,9 +39,9 @@ public class CodeMergeController {
     /** POST /api/code-merge/preview — columnName + oldValue 기준 영향 미리보기 */
     @PostMapping("/preview")
     public ResponseEntity<ApiResponse<Map<String, Object>>> previewCodeMerge(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
                 codeMergeService.previewCodeMerge(body)));
     }
@@ -49,9 +49,9 @@ public class CodeMergeController {
     /** POST /api/code-merge/merge-by-value — 값 기반 전체 테이블/컬럼 코드 병합 */
     @PostMapping("/merge-by-value")
     public ResponseEntity<ApiResponse<Map<String, Object>>> mergeByValue(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
                 codeMergeService.mergeByValue(body),
                 "코드 병합이 완료되었습니다."));
@@ -60,9 +60,9 @@ public class CodeMergeController {
     /** POST /api/code-merge/preview-by-value — 값 기반 영향 미리보기 */
     @PostMapping("/preview-by-value")
     public ResponseEntity<ApiResponse<Map<String, Object>>> previewByValue(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
                 codeMergeService.previewByValue(body)));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/CollectionController.java b/backend-spring/src/main/java/com/erp/controller/CollectionController.java
index 194ed9ef..ecf23dd7 100644
--- a/backend-spring/src/main/java/com/erp/controller/CollectionController.java
+++ b/backend-spring/src/main/java/com/erp/controller/CollectionController.java
@@ -16,82 +16,82 @@ public class CollectionController {
 
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCollectionList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(collectionService.getCollectionList(params)));
     }
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCollectionListAlias(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(collectionService.getCollectionList(params)));
     }
 
     @GetMapping("/jobs/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCollectionJobList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(collectionService.getCollectionJobList(params)));
     }
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCollectionInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(collectionService.getCollectionInfo(params)));
     }
 
     @GetMapping("/{configId}/history")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCollectionHistory(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long configId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("configId", configId);
+        params.put("company_code", companyCode);
+        params.put("config_id", configId);
         return ResponseEntity.ok(ApiResponse.success(collectionService.getCollectionHistory(params)));
     }
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertCollection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.status(201).body(ApiResponse.success(collectionService.insertCollection(body), "수집 설정이 생성되었습니다."));
     }
 
     @PostMapping("/{id}/execute")
     public ResponseEntity<ApiResponse<Map<String, Object>>> executeCollection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(collectionService.executeCollection(params)));
     }
 
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateCollection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(collectionService.updateCollection(body)));
     }
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteCollection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         collectionService.deleteCollection(params);
         return ResponseEntity.ok(ApiResponse.success(null, "수집 설정이 삭제되었습니다."));
diff --git a/backend-spring/src/main/java/com/erp/controller/CommonCodeController.java b/backend-spring/src/main/java/com/erp/controller/CommonCodeController.java
index cf12eceb..2e9f4352 100644
--- a/backend-spring/src/main/java/com/erp/controller/CommonCodeController.java
+++ b/backend-spring/src/main/java/com/erp/controller/CommonCodeController.java
@@ -34,10 +34,10 @@ public class CommonCodeController {
 
     @GetMapping("/categories")
     public ResponseEntity<Map<String, Object>> getCommonCodeCategoryList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
 
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         Map<String, Object> svcResult = service.getCommonCodeCategoryList(params);
 
         Map<String, Object> response = new java.util.LinkedHashMap<>();
@@ -54,8 +54,8 @@ public class CommonCodeController {
 
     @GetMapping("/categories/check-duplicate")
     public ResponseEntity<ApiResponse<Map<String, Object>>> checkCategoryDuplicate(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestParam(defaultValue = "categoryCode") String field,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestParam(defaultValue = "category_code") String field,
             @RequestParam String value,
             @RequestParam(required = false) String excludeCode) {
 
@@ -69,11 +69,11 @@ public class CommonCodeController {
 
     @PostMapping("/categories")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertCommonCodeCategory(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
-        if (body.get("categoryCode") == null || body.get("categoryName") == null) {
+        if (body.get("category_code") == null || body.get("category_name") == null) {
             return ResponseEntity.status(400)
                     .body(ApiResponse.error("필수 필드가 누락되었습니다. (categoryCode, categoryName)"));
         }
@@ -94,8 +94,8 @@ public class CommonCodeController {
 
     @PutMapping("/categories/{categoryCode}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateCommonCodeCategory(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable String categoryCode,
             @RequestBody Map<String, Object> body) {
 
@@ -119,7 +119,7 @@ public class CommonCodeController {
 
     @DeleteMapping("/categories/{categoryCode}")
     public ResponseEntity<ApiResponse<Void>> deleteCommonCodeCategory(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String categoryCode) {
 
         try {
@@ -140,11 +140,11 @@ public class CommonCodeController {
 
     @GetMapping("/categories/{categoryCode}/codes")
     public ResponseEntity<Map<String, Object>> getCommonCodeList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String categoryCode,
             @RequestParam Map<String, Object> params) {
 
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         Map<String, Object> svcResult = service.getCommonCodeList(categoryCode, params);
 
         Map<String, Object> response = new java.util.LinkedHashMap<>();
@@ -161,12 +161,12 @@ public class CommonCodeController {
 
     @PostMapping("/categories/{categoryCode}/codes")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertCommonCode(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable String categoryCode,
             @RequestBody Map<String, Object> body) {
 
-        if (body.get("codeValue") == null || body.get("codeName") == null) {
+        if (body.get("code_value") == null || body.get("code_name") == null) {
             return ResponseEntity.status(400)
                     .body(ApiResponse.error("필수 필드가 누락되었습니다. (codeValue, codeName)"));
         }
@@ -187,9 +187,9 @@ public class CommonCodeController {
 
     @GetMapping("/categories/{categoryCode}/codes/check-duplicate")
     public ResponseEntity<ApiResponse<Map<String, Object>>> checkCodeDuplicate(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String categoryCode,
-            @RequestParam(defaultValue = "codeValue") String field,
+            @RequestParam(defaultValue = "code_value") String field,
             @RequestParam String value,
             @RequestParam(required = false) String excludeCode) {
 
@@ -204,7 +204,7 @@ public class CommonCodeController {
     @SuppressWarnings("unchecked")
     @PutMapping("/categories/{categoryCode}/codes/reorder")
     public ResponseEntity<ApiResponse<Void>> updateCommonCodeOrder(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String categoryCode,
             @RequestBody Map<String, Object> body) {
 
@@ -229,11 +229,11 @@ public class CommonCodeController {
 
     @GetMapping("/categories/{categoryCode}/hierarchy")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCommonCodeHierarchicalList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String categoryCode,
             @RequestParam Map<String, Object> params) {
 
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(
                 ApiResponse.success(service.getCommonCodeHierarchicalList(categoryCode, params)));
     }
@@ -244,7 +244,7 @@ public class CommonCodeController {
 
     @GetMapping("/categories/{categoryCode}/tree")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCommonCodeTree(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String categoryCode) {
 
         return ResponseEntity.ok(
@@ -257,11 +257,11 @@ public class CommonCodeController {
 
     @GetMapping("/categories/{categoryCode}/options")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCommonCodeOptionList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String categoryCode,
             @RequestParam Map<String, Object> params) {
 
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(
                 ApiResponse.success(service.getCommonCodeOptionList(categoryCode, params)));
     }
@@ -272,7 +272,7 @@ public class CommonCodeController {
 
     @GetMapping("/categories/{categoryCode}/codes/{codeValue}/has-children")
     public ResponseEntity<ApiResponse<Map<String, Object>>> hasChildren(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String categoryCode,
             @PathVariable String codeValue) {
 
@@ -286,8 +286,8 @@ public class CommonCodeController {
 
     @PutMapping("/categories/{categoryCode}/codes/{codeValue}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateCommonCode(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable String categoryCode,
             @PathVariable String codeValue,
             @RequestBody Map<String, Object> body) {
@@ -312,7 +312,7 @@ public class CommonCodeController {
 
     @DeleteMapping("/categories/{categoryCode}/codes/{codeValue}")
     public ResponseEntity<ApiResponse<Void>> deleteCommonCode(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String categoryCode,
             @PathVariable String codeValue) {
 
diff --git a/backend-spring/src/main/java/com/erp/controller/CompanyManagementController.java b/backend-spring/src/main/java/com/erp/controller/CompanyManagementController.java
index d66e01b8..64e41d8f 100644
--- a/backend-spring/src/main/java/com/erp/controller/CompanyManagementController.java
+++ b/backend-spring/src/main/java/com/erp/controller/CompanyManagementController.java
@@ -28,14 +28,14 @@ public class CompanyManagementController {
             @RequestBody(required = false) Map<String, Object> body) {
 
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         if (body != null) {
             params.putAll(body);
         }
 
         try {
             Map<String, Object> data = companyManagementService.deleteCompany(params);
-            String companyName = (String) data.get("companyName");
+            String companyName = (String) data.get("company_name");
             return ResponseEntity.ok(
                     ApiResponse.success(data, "회사 '" + companyName + "'이(가) 성공적으로 삭제되었습니다."));
         } catch (IllegalArgumentException e) {
diff --git a/backend-spring/src/main/java/com/erp/controller/ComponentStandardController.java b/backend-spring/src/main/java/com/erp/controller/ComponentStandardController.java
index d751a87b..34b8d55d 100644
--- a/backend-spring/src/main/java/com/erp/controller/ComponentStandardController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ComponentStandardController.java
@@ -41,9 +41,9 @@ public class ComponentStandardController {
 
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getComponents(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(service.getComponents(params)));
     }
 
@@ -53,9 +53,9 @@ public class ComponentStandardController {
 
     @GetMapping("/categories")
     public ResponseEntity<ApiResponse<List<String>>> getCategories(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(service.getCategories(params)));
     }
 
@@ -65,9 +65,9 @@ public class ComponentStandardController {
 
     @GetMapping("/statistics")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getStatistics(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(service.getStatistics(params)));
     }
 
@@ -77,11 +77,11 @@ public class ComponentStandardController {
 
     @GetMapping("/check-duplicate/{component_code}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> checkDuplicate(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable("component_code") String componentCode) {
         Map<String, Object> params = new HashMap<>();
         params.put("component_code", componentCode);
-        params.put("companyCode",    companyCode);
+        params.put("company_code",    companyCode);
         boolean exists = service.checkDuplicate(params);
         return ResponseEntity.ok(ApiResponse.success(Map.of("exists", exists)));
     }
@@ -106,9 +106,9 @@ public class ComponentStandardController {
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createComponent(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode",   companyCode);
+        body.put("company_code",   companyCode);
         body.putIfAbsent("company_code", companyCode);
         try {
             return ResponseEntity.ok(ApiResponse.success(service.createComponent(body)));
diff --git a/backend-spring/src/main/java/com/erp/controller/DashboardController.java b/backend-spring/src/main/java/com/erp/controller/DashboardController.java
index 066e8634..1d2c26a0 100644
--- a/backend-spring/src/main/java/com/erp/controller/DashboardController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DashboardController.java
@@ -20,33 +20,33 @@ public class DashboardController {
 
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDashboards(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(dashboardService.getDashboardList(params)));
     }
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDashboardsLegacy(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(dashboardService.getDashboardList(params)));
     }
 
     @GetMapping("/public")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getPublicDashboards(
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", "*");
-        params.put("isPublic", "true");
+        params.put("company_code", "*");
+        params.put("is_public", "true");
         return ResponseEntity.ok(ApiResponse.success(dashboardService.getDashboardList(params)));
     }
 
     @GetMapping("/my")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMyDashboards(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(dashboardService.getDashboardList(params)));
     }
 
@@ -60,13 +60,13 @@ public class DashboardController {
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDashboard(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String id) {
         Map<String, Object> result = dashboardService.getDashboardById(id, companyCode);
         if (result == null) return ResponseEntity.status(404).body(ApiResponse.error("대시보드를 찾을 수 없거나 접근 권한이 없습니다."));
         // 다른 사람 것 조회 시 조회수 증가
-        if (userId != null && !userId.equals(result.get("createdBy"))) {
+        if (userId != null && !userId.equals(result.get("created_by"))) {
             dashboardService.incrementViewCount(id);
         }
         return ResponseEntity.ok(ApiResponse.success(result));
@@ -74,8 +74,8 @@ public class DashboardController {
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createDashboard(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
         String title = (String) body.get("title");
         if (title == null || title.isBlank()) return ResponseEntity.status(400).body(ApiResponse.error("대시보드 제목이 필요합니다."));
@@ -86,7 +86,7 @@ public class DashboardController {
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateDashboard(
             @PathVariable String id,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
         Map<String, Object> result = dashboardService.updateDashboard(id, body, userId);
         if (result == null) return ResponseEntity.status(404).body(ApiResponse.error("대시보드를 찾을 수 없거나 수정 권한이 없습니다."));
@@ -96,7 +96,7 @@ public class DashboardController {
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteDashboard(
             @PathVariable String id,
-            @RequestAttribute(value = "userId", required = false) String userId) {
+            @RequestAttribute(value = "user_id", required = false) String userId) {
         boolean deleted = dashboardService.deleteDashboard(id, userId);
         if (!deleted) return ResponseEntity.status(404).body(ApiResponse.error("대시보드를 찾을 수 없거나 삭제 권한이 없습니다."));
         return ResponseEntity.ok(ApiResponse.success(null, "대시보드가 삭제되었습니다."));
@@ -130,14 +130,14 @@ public class DashboardController {
 
     @PostMapping("/fetch-external-api")
     public ResponseEntity<ApiResponse<Object>> fetchExternalApi(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
         String url = (String) body.get("url");
         if (url == null || url.isBlank()) return ResponseEntity.status(400).body(ApiResponse.error("URL이 필요합니다."));
-        Object externalConnectionId = body.get("externalConnectionId");
+        Object externalConnectionId = body.get("external_connection_id");
 
         Map<String, Object> requestParams = new HashMap<>(body);
-        requestParams.put("companyCode", companyCode);
+        requestParams.put("company_code", companyCode);
         if (externalConnectionId != null) {
             int connId = Integer.parseInt(String.valueOf(externalConnectionId));
             Map<String, Object> result = externalRestApiConnectionService.fetchData(connId, url, null, requestParams);
@@ -154,7 +154,7 @@ public class DashboardController {
     @PostMapping("/table-schema")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTableSchema(
             @RequestBody Map<String, Object> body) {
-        String tableName = (String) body.get("tableName");
+        String tableName = (String) body.get("table_name");
         if (tableName == null || tableName.isBlank()) return ResponseEntity.status(400).body(ApiResponse.error("테이블명이 필요합니다."));
         try {
             Map<String, Object> result = dashboardService.getTableSchema(tableName);
diff --git a/backend-spring/src/main/java/com/erp/controller/DataAdvancedController.java b/backend-spring/src/main/java/com/erp/controller/DataAdvancedController.java
index fb5dea47..b402091f 100644
--- a/backend-spring/src/main/java/com/erp/controller/DataAdvancedController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DataAdvancedController.java
@@ -18,9 +18,9 @@ public class DataAdvancedController {
 
     @PostMapping("/upsert-grouped")
     public ResponseEntity<Map<String, Object>> upsertGrouped(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         try {
             Map<String, Object> result = dataAdvancedService.upsertGrouped(body);
             Map<String, Object> response = new LinkedHashMap<>();
@@ -29,7 +29,7 @@ public class DataAdvancedController {
             response.put("inserted", result.getOrDefault("inserted", 0));
             response.put("updated", result.getOrDefault("updated", 0));
             response.put("deleted", result.getOrDefault("deleted", 0));
-            response.put("savedIds", result.getOrDefault("savedIds", Collections.emptyList()));
+            response.put("saved_ids", result.getOrDefault("saved_ids", Collections.emptyList()));
             return ResponseEntity.ok(response);
         } catch (IllegalArgumentException e) {
             Map<String, Object> err = new LinkedHashMap<>();
@@ -41,18 +41,18 @@ public class DataAdvancedController {
 
     @PostMapping("/{tableName}/delete")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteByCondition(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @RequestBody Map<String, Object> body) {
         // Node.js는 복합키를 body에 직접 전송 (e.g. {user_id: 'x', dept_code: 'y'})
         // DataService.deleteByCompositeKey는 params.get("keys")를 기대하므로 래핑
         Map<String, Object> keys = new LinkedHashMap<>(body);
-        keys.remove("tableName");
-        keys.remove("companyCode");
+        keys.remove("table_name");
+        keys.remove("company_code");
 
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("tableName", tableName);
+        params.put("company_code", companyCode);
+        params.put("table_name", tableName);
         params.put("keys", keys);
         try {
             return ResponseEntity.ok(ApiResponse.success(dataAdvancedService.deleteByCondition(params)));
@@ -63,18 +63,18 @@ public class DataAdvancedController {
 
     @PostMapping("/{tableName}/delete-group")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteGroup(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @RequestBody Map<String, Object> body) {
         // Node.js는 필터 조건을 body에 직접 전송
         // DataService.deleteGroupRecords는 params.get("filters")를 기대하므로 래핑
         Map<String, Object> filters = new LinkedHashMap<>(body);
-        filters.remove("tableName");
-        filters.remove("companyCode");
+        filters.remove("table_name");
+        filters.remove("company_code");
 
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("tableName", tableName);
+        params.put("company_code", companyCode);
+        params.put("table_name", tableName);
         params.put("filters", filters);
         try {
             return ResponseEntity.ok(ApiResponse.success(dataAdvancedService.deleteGroup(params)));
@@ -85,51 +85,51 @@ public class DataAdvancedController {
 
     @GetMapping("/multi-table/auto-detect")
     public ResponseEntity<ApiResponse<Map<String, Object>>> autoDetectMultiTable(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(dataAdvancedService.autoDetectMultiTable(params)));
     }
 
     @PostMapping("/multi-table/upload")
     public ResponseEntity<ApiResponse<Map<String, Object>>> uploadMultiTable(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(dataAdvancedService.uploadMultiTable(body)));
     }
 
     @GetMapping("/master-detail/relation/{screenId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMasterDetailRelation(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String screenId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("screenId", screenId);
+        params.put("company_code", companyCode);
+        params.put("screen_id", screenId);
         return ResponseEntity.ok(ApiResponse.success(dataAdvancedService.getMasterDetailRelation(params)));
     }
 
     @PostMapping("/master-detail/download")
     public ResponseEntity<ApiResponse<Map<String, Object>>> downloadMasterDetail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(dataAdvancedService.downloadMasterDetail(body)));
     }
 
     @PostMapping("/master-detail/upload")
     public ResponseEntity<ApiResponse<Map<String, Object>>> uploadMasterDetail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(dataAdvancedService.uploadMasterDetail(body)));
     }
 
     @PostMapping("/master-detail/upload-simple")
     public ResponseEntity<ApiResponse<Map<String, Object>>> uploadMasterDetailSimple(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(dataAdvancedService.uploadMasterDetailSimple(body)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/DataController.java b/backend-spring/src/main/java/com/erp/controller/DataController.java
index 9afcd622..8908a11c 100644
--- a/backend-spring/src/main/java/com/erp/controller/DataController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DataController.java
@@ -17,19 +17,19 @@ public class DataController {
 
     @GetMapping("/join")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getJoinData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(dataService.getJoinData(params)));
     }
 
     @GetMapping("/{tableName}")
     public ResponseEntity<Map<String, Object>> getTableData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
-        params.put("tableName", tableName);
+        params.put("company_code", companyCode);
+        params.put("table_name", tableName);
         try {
             Map<String, Object> svc = dataService.getTableData(params);
             Map<String, Object> response = new LinkedHashMap<>();
@@ -38,7 +38,7 @@ public class DataController {
             response.put("total", svc.get("total"));
             response.put("page", svc.get("page"));
             response.put("size", svc.get("limit"));
-            response.put("totalPages", svc.get("totalPages"));
+            response.put("total_pages", svc.get("total_pages"));
             return ResponseEntity.ok(response);
         } catch (IllegalArgumentException e) {
             Map<String, Object> err = new LinkedHashMap<>();
@@ -50,7 +50,7 @@ public class DataController {
 
     @GetMapping("/{tableName}/columns")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTableColumns(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName) {
         try {
             return ResponseEntity.ok(ApiResponse.success(dataService.getTableColumns(tableName)));
@@ -61,12 +61,12 @@ public class DataController {
 
     @GetMapping("/{tableName}/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getRecordDetail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @PathVariable String id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("tableName", tableName);
+        params.put("company_code", companyCode);
+        params.put("table_name", tableName);
         params.put("id", id);
         try {
             Map<String, Object> result = dataService.getRecordDetail(params);
@@ -79,11 +79,11 @@ public class DataController {
 
     @PostMapping("/{tableName}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createRecord(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("tableName", tableName);
+        body.put("company_code", companyCode);
+        body.put("table_name", tableName);
         try {
             return ResponseEntity.status(201).body(
                     ApiResponse.success(dataService.createRecord(body), "레코드가 생성되었습니다."));
@@ -94,12 +94,12 @@ public class DataController {
 
     @PutMapping("/{tableName}/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateRecord(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @PathVariable String id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("tableName", tableName);
+        body.put("company_code", companyCode);
+        body.put("table_name", tableName);
         body.put("id", id);
         try {
             Map<String, Object> result = dataService.updateRecord(body);
@@ -112,12 +112,12 @@ public class DataController {
 
     @DeleteMapping("/{tableName}/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteRecord(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @PathVariable String id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("tableName", tableName);
+        params.put("company_code", companyCode);
+        params.put("table_name", tableName);
         params.put("id", id);
         try {
             Map<String, Object> result = dataService.deleteRecord(params);
diff --git a/backend-spring/src/main/java/com/erp/controller/DataflowController.java b/backend-spring/src/main/java/com/erp/controller/DataflowController.java
index c83fcfdc..42d8fba4 100644
--- a/backend-spring/src/main/java/com/erp/controller/DataflowController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DataflowController.java
@@ -28,15 +28,15 @@ public class DataflowController {
      */
     @PostMapping("/table-relationships")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createTableRelationship(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
-        String relName  = str(body.get("relationshipName"));
-        String fromTbl  = str(body.get("fromTableName"));
-        String fromCol  = str(body.get("fromColumnName"));
-        String toTbl    = str(body.get("toTableName"));
-        String toCol    = str(body.get("toColumnName"));
+        String relName  = str(body.get("relationship_name"));
+        String fromTbl  = str(body.get("from_table_name"));
+        String fromCol  = str(body.get("from_column_name"));
+        String toTbl    = str(body.get("to_table_name"));
+        String toCol    = str(body.get("to_column_name"));
 
         if (blank(relName) || blank(fromTbl) || blank(fromCol) || blank(toTbl) || blank(toCol)) {
             return ResponseEntity.badRequest()
@@ -60,7 +60,7 @@ public class DataflowController {
      */
     @GetMapping("/table-relationships")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTableRelationshipList(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             return ResponseEntity.ok(ApiResponse.success(
                     dataflowService.getTableRelationshipList(companyCode),
@@ -76,7 +76,7 @@ public class DataflowController {
      */
     @GetMapping("/table-relationships/{relationshipId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTableRelationshipInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int relationshipId) {
         try {
             Map<String, Object> rel = dataflowService.getTableRelationshipInfo(relationshipId, companyCode);
@@ -95,8 +95,8 @@ public class DataflowController {
      */
     @PutMapping("/table-relationships/{relationshipId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateTableRelationship(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable int relationshipId,
             @RequestBody Map<String, Object> body) {
         try {
@@ -117,7 +117,7 @@ public class DataflowController {
      */
     @DeleteMapping("/table-relationships/{relationshipId}")
     public ResponseEntity<ApiResponse<Void>> deleteTableRelationship(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int relationshipId) {
         try {
             boolean deleted = dataflowService.deleteTableRelationship(relationshipId, companyCode);
@@ -140,13 +140,13 @@ public class DataflowController {
      */
     @PostMapping("/data-links")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createDataLink(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
-        if (body.get("relationshipId") == null || blank(str(body.get("fromTableName")))
-                || blank(str(body.get("fromColumnName"))) || blank(str(body.get("toTableName")))
-                || blank(str(body.get("toColumnName")))   || blank(str(body.get("connectionType")))) {
+        if (body.get("relationship_id") == null || blank(str(body.get("from_table_name")))
+                || blank(str(body.get("from_column_name"))) || blank(str(body.get("to_table_name")))
+                || blank(str(body.get("to_column_name")))   || blank(str(body.get("connection_type")))) {
             return ResponseEntity.badRequest()
                     .body(ApiResponse.error("필수 필드가 누락되었습니다."));
         }
@@ -166,7 +166,7 @@ public class DataflowController {
      */
     @GetMapping("/data-links/relationship/{relationshipId}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getDataLinkList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int relationshipId) {
         try {
             return ResponseEntity.ok(ApiResponse.success(
@@ -183,8 +183,8 @@ public class DataflowController {
      */
     @DeleteMapping("/data-links/{bridgeId}")
     public ResponseEntity<ApiResponse<Void>> deleteDataLink(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable int bridgeId) {
         try {
             dataflowService.deleteDataLink(bridgeId, companyCode, userId);
@@ -204,7 +204,7 @@ public class DataflowController {
      */
     @GetMapping("/table-data/{tableName}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTableData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @RequestParam(defaultValue = "1")  int    page,
             @RequestParam(defaultValue = "10") int    limit,
@@ -231,7 +231,7 @@ public class DataflowController {
      */
     @GetMapping("/diagrams")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDiagramList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam(defaultValue = "1")  int    page,
             @RequestParam(defaultValue = "20") int    size,
             @RequestParam(defaultValue = "")   String searchTerm) {
@@ -251,7 +251,7 @@ public class DataflowController {
      */
     @GetMapping("/diagrams/name/{diagramName}/relationships")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getDiagramRelationshipList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String diagramName) {
         try {
             return ResponseEntity.ok(ApiResponse.success(
@@ -269,7 +269,7 @@ public class DataflowController {
      */
     @GetMapping("/diagrams/{diagramId}/relationships")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getDiagramRelationshipListByDiagramId(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int diagramId) {
         try {
             return ResponseEntity.ok(ApiResponse.success(
@@ -286,13 +286,13 @@ public class DataflowController {
      */
     @PostMapping("/diagrams/{diagramName}/copy")
     public ResponseEntity<ApiResponse<Map<String, Object>>> copyDiagram(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String diagramName) {
         try {
             String decoded       = java.net.URLDecoder.decode(diagramName, "UTF-8");
             String newDiagramName = dataflowService.copyDiagram(companyCode, decoded);
             Map<String, Object> data = new HashMap<>();
-            data.put("newDiagramName", newDiagramName);
+            data.put("new_diagram_name", newDiagramName);
             return ResponseEntity.ok(ApiResponse.success(data, "관계도가 성공적으로 복사되었습니다."));
         } catch (IllegalArgumentException e) {
             return ResponseEntity.status(404).body(ApiResponse.error(e.getMessage()));
@@ -307,13 +307,13 @@ public class DataflowController {
      */
     @DeleteMapping("/diagrams/{diagramName}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteDiagram(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String diagramName) {
         try {
             String decoded    = java.net.URLDecoder.decode(diagramName, "UTF-8");
             int deletedCount = dataflowService.deleteDiagram(companyCode, decoded);
             Map<String, Object> data = new HashMap<>();
-            data.put("deletedCount", deletedCount);
+            data.put("deleted_count", deletedCount);
             return ResponseEntity.ok(ApiResponse.success(data, "관계도가 성공적으로 삭제되었습니다."));
         } catch (Exception e) {
             log.error("관계도 삭제 실패", e);
@@ -327,7 +327,7 @@ public class DataflowController {
      */
     @GetMapping("/relationships/{relationshipId}/diagram")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getDiagramRelationshipListByRelationshipId(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int relationshipId) {
         try {
             return ResponseEntity.ok(ApiResponse.success(
@@ -351,7 +351,7 @@ public class DataflowController {
             @PathVariable int diagramId,
             @RequestBody(required = false) Map<String, Object> body) {
         Map<String, Object> result = new HashMap<>();
-        result.put("diagramId", diagramId);
+        result.put("diagram_id", diagramId);
         result.put("tested",    true);
         return ResponseEntity.ok(ApiResponse.success(result, "조건 테스트가 완료되었습니다."));
     }
@@ -364,7 +364,7 @@ public class DataflowController {
             @PathVariable int diagramId,
             @RequestBody(required = false) Map<String, Object> body) {
         Map<String, Object> result = new HashMap<>();
-        result.put("diagramId", diagramId);
+        result.put("diagram_id", diagramId);
         result.put("executed",  true);
         return ResponseEntity.ok(ApiResponse.success(result, "액션이 성공적으로 실행되었습니다."));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/DataflowDiagramController.java b/backend-spring/src/main/java/com/erp/controller/DataflowDiagramController.java
index 9e62da80..fc28661b 100644
--- a/backend-spring/src/main/java/com/erp/controller/DataflowDiagramController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DataflowDiagramController.java
@@ -34,10 +34,10 @@ public class DataflowDiagramController {
 
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDataflowDiagrams(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
 
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(service.getDataflowDiagrams(params)));
     }
 
@@ -47,8 +47,8 @@ public class DataflowDiagramController {
 
     @GetMapping("/{diagramId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDataflowDiagramById(
-            @RequestAttribute("companyCode") String companyCode,
-            @PathVariable("diagramId") String diagramIdStr) {
+            @RequestAttribute("company_code") String companyCode,
+            @PathVariable("diagram_id") String diagramIdStr) {
 
         int diagramId = parseId(diagramIdStr);
         if (diagramId < 0) {
@@ -70,8 +70,8 @@ public class DataflowDiagramController {
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createDataflowDiagram(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
         if (body.get("diagram_name") == null || body.get("relationships") == null) {
@@ -104,9 +104,9 @@ public class DataflowDiagramController {
 
     @PutMapping("/{diagramId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateDataflowDiagram(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
-            @PathVariable("diagramId") String diagramIdStr,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
+            @PathVariable("diagram_id") String diagramIdStr,
             @RequestBody Map<String, Object> body) {
 
         int diagramId = parseId(diagramIdStr);
@@ -144,8 +144,8 @@ public class DataflowDiagramController {
 
     @DeleteMapping("/{diagramId}")
     public ResponseEntity<ApiResponse<Void>> deleteDataflowDiagram(
-            @RequestAttribute("companyCode") String companyCode,
-            @PathVariable("diagramId") String diagramIdStr) {
+            @RequestAttribute("company_code") String companyCode,
+            @PathVariable("diagram_id") String diagramIdStr) {
 
         int diagramId = parseId(diagramIdStr);
         if (diagramId < 0) {
@@ -173,9 +173,9 @@ public class DataflowDiagramController {
 
     @PostMapping("/{diagramId}/copy")
     public ResponseEntity<ApiResponse<Map<String, Object>>> copyDataflowDiagram(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
-            @PathVariable("diagramId") String diagramIdStr,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
+            @PathVariable("diagram_id") String diagramIdStr,
             @RequestBody(required = false) Map<String, Object> body) {
 
         int diagramId = parseId(diagramIdStr);
diff --git a/backend-spring/src/main/java/com/erp/controller/DataflowExecutionController.java b/backend-spring/src/main/java/com/erp/controller/DataflowExecutionController.java
index be755e02..c0305505 100644
--- a/backend-spring/src/main/java/com/erp/controller/DataflowExecutionController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DataflowExecutionController.java
@@ -25,18 +25,18 @@ public class DataflowExecutionController {
 
     @PostMapping("/execute-data-action")
     public ResponseEntity<ApiResponse<Map<String, Object>>> executeDataAction(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
         try {
-            body.put("companyCode", companyCode);
+            body.put("company_code", companyCode);
 
             log.info("데이터 액션 실행 요청: action={}, table={}",
-                    body.get("actionType"), body.get("tableName"));
+                    body.get("action_type"), body.get("table_name"));
 
             Map<String, Object> result = service.executeDataAction(body);
             return ResponseEntity.ok(
-                    ApiResponse.success(result, "데이터 액션 실행 완료: " + body.get("actionType")));
+                    ApiResponse.success(result, "데이터 액션 실행 완료: " + body.get("action_type")));
 
         } catch (IllegalArgumentException e) {
             log.warn("데이터 액션 파라미터 오류: {}", e.getMessage());
diff --git a/backend-spring/src/main/java/com/erp/controller/DdlController.java b/backend-spring/src/main/java/com/erp/controller/DdlController.java
index 148c8365..205f2969 100644
--- a/backend-spring/src/main/java/com/erp/controller/DdlController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DdlController.java
@@ -28,15 +28,15 @@ public class DdlController {
      */
     @PostMapping("/tables")
     public ResponseEntity<ApiResponse<?>> createTable(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
         if (!isSuperAdmin(companyCode)) {
             return ResponseEntity.status(403).body(ApiResponse.error("최고 관리자 권한이 필요합니다."));
         }
 
-        String tableName = (String) body.get("tableName");
+        String tableName = (String) body.get("table_name");
         @SuppressWarnings("unchecked")
         List<Map<String, Object>> columns = (List<Map<String, Object>>) body.get("columns");
         String description = (String) body.get("description");
@@ -50,9 +50,9 @@ public class DdlController {
 
         if (Boolean.TRUE.equals(result.get("success"))) {
             return ResponseEntity.ok(ApiResponse.success(Map.of(
-                "tableName",    result.get("tableName"),
-                "columnCount",  result.get("columnCount"),
-                "executedQuery", result.get("executedQuery")
+                "table_name",    result.get("table_name"),
+                "column_count",  result.get("column_count"),
+                "executed_query", result.get("executed_query")
             ), (String) result.get("message")));
         }
         return ResponseEntity.status(400).body(ApiResponse.error((String) result.get("message")));
@@ -64,8 +64,8 @@ public class DdlController {
     @PostMapping("/tables/{tableName}/columns")
     public ResponseEntity<ApiResponse<?>> addColumn(
             @PathVariable String tableName,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
         if (!isSuperAdmin(companyCode)) {
@@ -83,9 +83,9 @@ public class DdlController {
 
         if (Boolean.TRUE.equals(result.get("success"))) {
             return ResponseEntity.ok(ApiResponse.success(Map.of(
-                "tableName",    result.get("tableName"),
-                "columnName",   result.get("columnName"),
-                "executedQuery", result.get("executedQuery")
+                "table_name",    result.get("table_name"),
+                "column_name",   result.get("column_name"),
+                "executed_query", result.get("executed_query")
             ), (String) result.get("message")));
         }
         return ResponseEntity.status(400).body(ApiResponse.error((String) result.get("message")));
@@ -97,8 +97,8 @@ public class DdlController {
     @DeleteMapping("/tables/{tableName}")
     public ResponseEntity<ApiResponse<?>> dropTable(
             @PathVariable String tableName,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
 
         if (!isSuperAdmin(companyCode)) {
             return ResponseEntity.status(403).body(ApiResponse.error("최고 관리자 권한이 필요합니다."));
@@ -108,8 +108,8 @@ public class DdlController {
 
         if (Boolean.TRUE.equals(result.get("success"))) {
             return ResponseEntity.ok(ApiResponse.success(Map.of(
-                "tableName",    result.get("tableName"),
-                "executedQuery", result.get("executedQuery")
+                "table_name",    result.get("table_name"),
+                "executed_query", result.get("executed_query")
             ), (String) result.get("message")));
         }
         return ResponseEntity.status(400).body(ApiResponse.error((String) result.get("message")));
@@ -120,14 +120,14 @@ public class DdlController {
      */
     @PostMapping("/validate/table")
     public ResponseEntity<ApiResponse<?>> validateTableCreation(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
         if (!isSuperAdmin(companyCode)) {
             return ResponseEntity.status(403).body(ApiResponse.error("최고 관리자 권한이 필요합니다."));
         }
 
-        String tableName = (String) body.get("tableName");
+        String tableName = (String) body.get("table_name");
         @SuppressWarnings("unchecked")
         List<Map<String, Object>> columns = (List<Map<String, Object>>) body.get("columns");
 
@@ -149,7 +149,7 @@ public class DdlController {
      */
     @GetMapping("/logs")
     public ResponseEntity<ApiResponse<?>> getDdlLogs(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam(required = false, defaultValue = "50") int limit,
             @RequestParam(required = false) String userId,
             @RequestParam(required = false) String ddlType) {
@@ -168,7 +168,7 @@ public class DdlController {
      */
     @GetMapping("/statistics")
     public ResponseEntity<ApiResponse<?>> getDdlStatistics(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam(required = false) String fromDate,
             @RequestParam(required = false) String toDate) {
 
@@ -186,7 +186,7 @@ public class DdlController {
     @GetMapping("/tables/{tableName}/history")
     public ResponseEntity<ApiResponse<?>> getTableDdlHistory(
             @PathVariable String tableName,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         if (!isSuperAdmin(companyCode)) {
             return ResponseEntity.status(403).body(ApiResponse.error("최고 관리자 권한이 필요합니다."));
@@ -194,7 +194,7 @@ public class DdlController {
 
         List<Map<String, Object>> history = ddlService.getTableDdlHistory(tableName);
         return ResponseEntity.ok(ApiResponse.success(
-            Map.of("tableName", tableName, "history", history, "total", history.size()),
+            Map.of("table_name", tableName, "history", history, "total", history.size()),
             "테이블 DDL 히스토리 조회 성공"));
     }
 
@@ -204,7 +204,7 @@ public class DdlController {
     @GetMapping("/tables/{tableName}/info")
     public ResponseEntity<ApiResponse<?>> getTableInfo(
             @PathVariable String tableName,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         if (!isSuperAdmin(companyCode)) {
             return ResponseEntity.status(403).body(ApiResponse.error("최고 관리자 권한이 필요합니다."));
@@ -228,7 +228,7 @@ public class DdlController {
      */
     @DeleteMapping("/logs/cleanup")
     public ResponseEntity<ApiResponse<?>> cleanupOldLogs(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam(required = false, defaultValue = "90") int retentionDays) {
 
         if (!isSuperAdmin(companyCode)) {
@@ -237,7 +237,7 @@ public class DdlController {
 
         int deletedCount = ddlService.cleanupOldLogs(retentionDays);
         return ResponseEntity.ok(ApiResponse.success(
-            Map.of("deletedCount", deletedCount, "retentionDays", retentionDays),
+            Map.of("deleted_count", deletedCount, "retention_days", retentionDays),
             deletedCount + "개의 오래된 DDL 로그가 삭제되었습니다."));
     }
 
@@ -246,7 +246,7 @@ public class DdlController {
      */
     @GetMapping("/info")
     public ResponseEntity<ApiResponse<?>> getInfo(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         if (!isSuperAdmin(companyCode)) {
             return ResponseEntity.status(403).body(ApiResponse.error("최고 관리자 권한이 필요합니다."));
@@ -263,14 +263,14 @@ public class DdlController {
                 "logging", "모든 DDL 실행은 감사 로그에 기록"
             ),
             "endpoints", Map.of(
-                "createTable",    "POST /api/ddl/tables",
-                "addColumn",      "POST /api/ddl/tables/{tableName}/columns",
-                "dropTable",      "DELETE /api/ddl/tables/{tableName}",
+                "create_table",    "POST /api/ddl/tables",
+                "add_column",      "POST /api/ddl/tables/{tableName}/columns",
+                "drop_table",      "DELETE /api/ddl/tables/{tableName}",
                 "validate",       "POST /api/ddl/validate/table",
                 "logs",           "GET /api/ddl/logs",
                 "statistics",     "GET /api/ddl/statistics",
                 "history",        "GET /api/ddl/tables/{tableName}/history",
-                "tableInfo",      "GET /api/ddl/tables/{tableName}/info",
+                "table_info",      "GET /api/ddl/tables/{tableName}/info",
                 "cleanup",        "DELETE /api/ddl/logs/cleanup"
             )
         ), "DDL 서비스 정보"));
diff --git a/backend-spring/src/main/java/com/erp/controller/DeliveryController.java b/backend-spring/src/main/java/com/erp/controller/DeliveryController.java
index fc699b80..fe564f81 100644
--- a/backend-spring/src/main/java/com/erp/controller/DeliveryController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DeliveryController.java
@@ -20,36 +20,36 @@ public class DeliveryController {
 
     @GetMapping("/status")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDeliveryStatus(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(deliveryService.getDeliveryStatus(params)));
     }
 
     @GetMapping("/delayed")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getDelayedDeliveries(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(deliveryService.getDelayedDeliveries(params)));
     }
 
     @GetMapping("/issues")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCustomerIssues(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam(required = false) String status) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         if (status != null) params.put("status", status);
         return ResponseEntity.ok(ApiResponse.success(deliveryService.getCustomerIssues(params)));
     }
 
     @PutMapping("/{id}/status")
     public ResponseEntity<ApiResponse<Void>> updateDeliveryStatus(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         deliveryService.updateDeliveryStatus(body);
         return ResponseEntity.ok(ApiResponse.success(null));
@@ -57,10 +57,10 @@ public class DeliveryController {
 
     @PutMapping("/issues/{id}/status")
     public ResponseEntity<ApiResponse<Void>> updateIssueStatus(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         deliveryService.updateIssueStatus(body);
         return ResponseEntity.ok(ApiResponse.success(null));
diff --git a/backend-spring/src/main/java/com/erp/controller/DepartmentController.java b/backend-spring/src/main/java/com/erp/controller/DepartmentController.java
index c2b6c1ef..55d1fa9c 100644
--- a/backend-spring/src/main/java/com/erp/controller/DepartmentController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DepartmentController.java
@@ -25,7 +25,7 @@ public class DepartmentController {
     @GetMapping("/companies/{companyCode}/departments")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getDepartments(
             @PathVariable String companyCode,
-            @RequestAttribute("companyCode") String userCompanyCode) {
+            @RequestAttribute("company_code") String userCompanyCode) {
 
         if (!isSuperAdmin(userCompanyCode) && !userCompanyCode.equals(companyCode)) {
             return ResponseEntity.status(403)
@@ -58,7 +58,7 @@ public class DepartmentController {
     @PostMapping("/companies/{companyCode}/departments")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createDepartment(
             @PathVariable String companyCode,
-            @RequestAttribute("companyCode") String userCompanyCode,
+            @RequestAttribute("company_code") String userCompanyCode,
             @RequestAttribute("role") String role,
             @RequestBody Map<String, Object> body) {
 
@@ -176,7 +176,7 @@ public class DepartmentController {
 
         // 프론트엔드는 snake_case(user_id)로 전송 (Node.js 호환)
         Object userIdObj = body.get("user_id");
-        if (userIdObj == null) userIdObj = body.get("userId");
+        if (userIdObj == null) userIdObj = body.get("user_id");
         if (userIdObj == null || userIdObj.toString().isBlank()) {
             return ResponseEntity.status(400).body(ApiResponse.error("사용자 ID를 입력해주세요."));
         }
diff --git a/backend-spring/src/main/java/com/erp/controller/DesignController.java b/backend-spring/src/main/java/com/erp/controller/DesignController.java
index 7e918060..79c1b18e 100644
--- a/backend-spring/src/main/java/com/erp/controller/DesignController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DesignController.java
@@ -22,15 +22,15 @@ public class DesignController {
 
     @GetMapping("/requests")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDesignRequestList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(designService.getDesignRequestList(params)));
     }
 
     @GetMapping("/requests/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDesignRequestDetail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id) {
         Map<String, Object> result = designService.getDesignRequestDetail(id, companyCode);
         if (result == null) return ResponseEntity.status(404).body(ApiResponse.error("의뢰를 찾을 수 없습니다."));
@@ -39,16 +39,16 @@ public class DesignController {
 
     @PostMapping("/requests")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createDesignRequest(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
         return ResponseEntity.ok(ApiResponse.success(designService.createDesignRequest(body, companyCode, userId)));
     }
 
     @PutMapping("/requests/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateDesignRequest(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String id,
             @RequestBody Map<String, Object> body) {
         Map<String, Object> result = designService.updateDesignRequest(id, body, companyCode, userId);
@@ -58,7 +58,7 @@ public class DesignController {
 
     @DeleteMapping("/requests/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteDesignRequest(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id) {
         boolean deleted = designService.deleteDesignRequest(id, companyCode);
         if (!deleted) return ResponseEntity.status(404).body(ApiResponse.error("의뢰를 찾을 수 없습니다."));
@@ -67,8 +67,8 @@ public class DesignController {
 
     @PostMapping("/requests/{id}/history")
     public ResponseEntity<ApiResponse<Map<String, Object>>> addRequestHistory(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String id,
             @RequestBody Map<String, Object> body) {
         return ResponseEntity.ok(ApiResponse.success(designService.addRequestHistory(id, body, companyCode, userId)));
@@ -80,15 +80,15 @@ public class DesignController {
 
     @GetMapping("/projects")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getProjectList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(designService.getProjectList(params)));
     }
 
     @GetMapping("/projects/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getProjectDetail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id) {
         Map<String, Object> result = designService.getProjectDetail(id, companyCode);
         if (result == null) return ResponseEntity.status(404).body(ApiResponse.error("프로젝트를 찾을 수 없습니다."));
@@ -97,15 +97,15 @@ public class DesignController {
 
     @PostMapping("/projects")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createProject(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
         return ResponseEntity.ok(ApiResponse.success(designService.createProject(body, companyCode, userId)));
     }
 
     @PutMapping("/projects/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateProject(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id,
             @RequestBody Map<String, Object> body) {
         Map<String, Object> result = designService.updateProject(id, body, companyCode);
@@ -115,7 +115,7 @@ public class DesignController {
 
     @DeleteMapping("/projects/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteProject(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id) {
         boolean deleted = designService.deleteProject(id, companyCode);
         if (!deleted) return ResponseEntity.status(404).body(ApiResponse.error("프로젝트를 찾을 수 없습니다."));
@@ -128,15 +128,15 @@ public class DesignController {
 
     @GetMapping("/projects/{projectId}/tasks")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTasksByProject(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String projectId) {
         return ResponseEntity.ok(ApiResponse.success(designService.getTasksByProject(projectId, companyCode)));
     }
 
     @PostMapping("/projects/{projectId}/tasks")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createTask(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String projectId,
             @RequestBody Map<String, Object> body) {
         return ResponseEntity.ok(ApiResponse.success(designService.createTask(projectId, body, companyCode, userId)));
@@ -144,7 +144,7 @@ public class DesignController {
 
     @PutMapping("/tasks/{taskId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateTask(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String taskId,
             @RequestBody Map<String, Object> body) {
         Map<String, Object> result = designService.updateTask(taskId, body, companyCode);
@@ -154,7 +154,7 @@ public class DesignController {
 
     @DeleteMapping("/tasks/{taskId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteTask(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String taskId) {
         boolean deleted = designService.deleteTask(taskId, companyCode);
         if (!deleted) return ResponseEntity.status(404).body(ApiResponse.error("태스크를 찾을 수 없습니다."));
@@ -167,15 +167,15 @@ public class DesignController {
 
     @GetMapping("/tasks/{taskId}/work-logs")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getWorkLogsByTask(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String taskId) {
         return ResponseEntity.ok(ApiResponse.success(designService.getWorkLogsByTask(taskId, companyCode)));
     }
 
     @PostMapping("/tasks/{taskId}/work-logs")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createWorkLog(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String taskId,
             @RequestBody Map<String, Object> body) {
         return ResponseEntity.ok(ApiResponse.success(designService.createWorkLog(taskId, body, companyCode, userId)));
@@ -183,7 +183,7 @@ public class DesignController {
 
     @DeleteMapping("/work-logs/{workLogId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteWorkLog(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String workLogId) {
         boolean deleted = designService.deleteWorkLog(workLogId, companyCode);
         if (!deleted) return ResponseEntity.status(404).body(ApiResponse.error("작업일지를 찾을 수 없습니다."));
@@ -196,8 +196,8 @@ public class DesignController {
 
     @PostMapping("/tasks/{taskId}/sub-items")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createSubItem(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String taskId,
             @RequestBody Map<String, Object> body) {
         return ResponseEntity.ok(ApiResponse.success(designService.createSubItem(taskId, body, companyCode, userId)));
@@ -205,7 +205,7 @@ public class DesignController {
 
     @PutMapping("/sub-items/{subItemId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateSubItem(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String subItemId,
             @RequestBody Map<String, Object> body) {
         Map<String, Object> result = designService.updateSubItem(subItemId, body, companyCode);
@@ -215,7 +215,7 @@ public class DesignController {
 
     @DeleteMapping("/sub-items/{subItemId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteSubItem(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String subItemId) {
         boolean deleted = designService.deleteSubItem(subItemId, companyCode);
         if (!deleted) return ResponseEntity.status(404).body(ApiResponse.error("하위항목을 찾을 수 없습니다."));
@@ -228,8 +228,8 @@ public class DesignController {
 
     @PostMapping("/tasks/{taskId}/issues")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createIssue(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String taskId,
             @RequestBody Map<String, Object> body) {
         return ResponseEntity.ok(ApiResponse.success(designService.createIssue(taskId, body, companyCode, userId)));
@@ -237,7 +237,7 @@ public class DesignController {
 
     @PutMapping("/issues/{issueId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateIssue(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String issueId,
             @RequestBody Map<String, Object> body) {
         Map<String, Object> result = designService.updateIssue(issueId, body, companyCode);
@@ -251,24 +251,24 @@ public class DesignController {
 
     @GetMapping("/ecn")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getEcnList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(designService.getEcnList(params)));
     }
 
     @PostMapping("/ecn")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createEcn(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
         return ResponseEntity.ok(ApiResponse.success(designService.createEcn(body, companyCode, userId)));
     }
 
     @PutMapping("/ecn/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateEcn(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String id,
             @RequestBody Map<String, Object> body) {
         Map<String, Object> result = designService.updateEcn(id, body, companyCode, userId);
@@ -278,7 +278,7 @@ public class DesignController {
 
     @DeleteMapping("/ecn/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteEcn(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id) {
         boolean deleted = designService.deleteEcn(id, companyCode);
         if (!deleted) return ResponseEntity.status(404).body(ApiResponse.error("ECN을 찾을 수 없습니다."));
@@ -291,8 +291,8 @@ public class DesignController {
 
     @GetMapping("/my-work")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getMyWork(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userName", required = false) String userName,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_name", required = false) String userName,
             @RequestParam Map<String, Object> params) {
         return ResponseEntity.ok(ApiResponse.success(designService.getMyWork(params, companyCode, userName)));
     }
@@ -303,8 +303,8 @@ public class DesignController {
 
     @PostMapping("/work-logs/{workLogId}/purchase-reqs")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createPurchaseReq(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String workLogId,
             @RequestBody Map<String, Object> body) {
         return ResponseEntity.ok(ApiResponse.success(designService.createPurchaseReq(workLogId, body, companyCode, userId)));
@@ -312,8 +312,8 @@ public class DesignController {
 
     @PostMapping("/work-logs/{workLogId}/coop-reqs")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createCoopReq(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String workLogId,
             @RequestBody Map<String, Object> body) {
         return ResponseEntity.ok(ApiResponse.success(designService.createCoopReq(workLogId, body, companyCode, userId)));
@@ -321,8 +321,8 @@ public class DesignController {
 
     @PostMapping("/coop-reqs/{coopReqId}/responses")
     public ResponseEntity<ApiResponse<Map<String, Object>>> addCoopResponse(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String coopReqId,
             @RequestBody Map<String, Object> body) {
         return ResponseEntity.ok(ApiResponse.success(designService.addCoopResponse(coopReqId, body, companyCode, userId)));
diff --git a/backend-spring/src/main/java/com/erp/controller/DigitalTwinController.java b/backend-spring/src/main/java/com/erp/controller/DigitalTwinController.java
index 113a22d0..d682c581 100644
--- a/backend-spring/src/main/java/com/erp/controller/DigitalTwinController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DigitalTwinController.java
@@ -21,19 +21,19 @@ public class DigitalTwinController {
     /** GET /layouts → 레이아웃 목록 */
     @GetMapping("/layouts")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDigitalTwinLayoutList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(digitalTwinService.getDigitalTwinLayoutList(params)));
     }
 
     /** GET /layouts/:id → 레이아웃 상세 (객체 포함) */
     @GetMapping("/layouts/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDigitalTwinLayoutInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         Map<String, Object> result = digitalTwinService.getDigitalTwinLayoutInfo(params);
         if (result == null) {
@@ -45,11 +45,11 @@ public class DigitalTwinController {
     /** POST /layouts → 레이아웃 생성 */
     @PostMapping("/layouts")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createDigitalTwinLayout(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("createdBy", userId);
+        body.put("company_code", companyCode);
+        body.put("created_by", userId);
         Map<String, Object> result = digitalTwinService.createDigitalTwinLayout(body);
         return ResponseEntity.status(201).body(ApiResponse.success(result));
     }
@@ -57,12 +57,12 @@ public class DigitalTwinController {
     /** PUT /layouts/:id → 레이아웃 수정 */
     @PutMapping("/layouts/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateDigitalTwinLayout(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("updatedBy", userId);
+        body.put("company_code", companyCode);
+        body.put("updated_by", userId);
         body.put("id", id);
         Map<String, Object> result = digitalTwinService.updateDigitalTwinLayout(body);
         if (result == null) {
@@ -74,10 +74,10 @@ public class DigitalTwinController {
     /** DELETE /layouts/:id → 레이아웃 삭제 */
     @DeleteMapping("/layouts/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteDigitalTwinLayout(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         boolean deleted = digitalTwinService.deleteDigitalTwinLayout(params);
         if (!deleted) {
@@ -91,19 +91,19 @@ public class DigitalTwinController {
     /** GET /mapping-templates → 매핑 템플릿 목록 */
     @GetMapping("/mapping-templates")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDigitalTwinTemplateList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(digitalTwinService.getDigitalTwinTemplateList(params)));
     }
 
     /** GET /mapping-templates/:id → 매핑 템플릿 상세 */
     @GetMapping("/mapping-templates/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDigitalTwinTemplateInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         Map<String, Object> result = digitalTwinService.getDigitalTwinTemplateInfo(params);
         if (result == null) {
@@ -115,14 +115,14 @@ public class DigitalTwinController {
     /** POST /mapping-templates → 매핑 템플릿 생성 */
     @PostMapping("/mapping-templates")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createDigitalTwinTemplate(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
-        if (body.get("name") == null || body.get("externalDbConnectionId") == null || body.get("config") == null) {
+        if (body.get("name") == null || body.get("external_db_connection_id") == null || body.get("config") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("필수 필드가 누락되었습니다. (name, externalDbConnectionId, config)"));
         }
-        body.put("companyCode", companyCode);
-        body.put("createdBy", userId);
+        body.put("company_code", companyCode);
+        body.put("created_by", userId);
         Map<String, Object> result = digitalTwinService.createDigitalTwinTemplate(body);
         return ResponseEntity.status(201).body(ApiResponse.success(result));
     }
@@ -133,7 +133,7 @@ public class DigitalTwinController {
     @PostMapping("/data/hierarchy")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getHierarchyData(
             @RequestBody Map<String, Object> body) {
-        if (body.get("externalDbConnectionId") == null || body.get("hierarchyConfig") == null) {
+        if (body.get("external_db_connection_id") == null || body.get("hierarchy_config") == null) {
             return ResponseEntity.status(400).body(
                     ApiResponse.error("외부 DB 연결 ID와 계층 구조 설정이 필요합니다."));
         }
@@ -145,8 +145,8 @@ public class DigitalTwinController {
     @PostMapping("/data/children")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getChildrenData(
             @RequestBody Map<String, Object> body) {
-        if (body.get("externalDbConnectionId") == null || body.get("hierarchyConfig") == null
-                || body.get("parentLevel") == null || body.get("parentKey") == null) {
+        if (body.get("external_db_connection_id") == null || body.get("hierarchy_config") == null
+                || body.get("parent_level") == null || body.get("parent_key") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("필수 파라미터가 누락되었습니다."));
         }
         List<Map<String, Object>> result = digitalTwinService.getChildrenData(body);
@@ -219,8 +219,8 @@ public class DigitalTwinController {
     @PostMapping("/data/material-counts")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getMaterialCounts(
             @RequestBody Map<String, Object> body) {
-        if (body.get("externalDbConnectionId") == null || body.get("locationKeys") == null
-                || body.get("tableName") == null) {
+        if (body.get("external_db_connection_id") == null || body.get("location_keys") == null
+                || body.get("table_name") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("필수 파라미터가 누락되었습니다."));
         }
         List<Map<String, Object>> result = digitalTwinService.getMaterialCounts(body);
diff --git a/backend-spring/src/main/java/com/erp/controller/DriverController.java b/backend-spring/src/main/java/com/erp/controller/DriverController.java
index 7439ce27..936a0d20 100644
--- a/backend-spring/src/main/java/com/erp/controller/DriverController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DriverController.java
@@ -18,23 +18,23 @@ public class DriverController {
     /** GET /list → 운전자 목록 (admin용 / api_test 호환) */
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDriverList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(driverService.getDriverList(params)));
     }
 
     /** GET /profile → 운전자 프로필 조회 */
     @GetMapping("/profile")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDriverProfile(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId) {
         if (userId == null) {
             return ResponseEntity.status(401).body(ApiResponse.error("인증이 필요합니다."));
         }
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("userId", userId);
+        params.put("company_code", companyCode);
+        params.put("user_id", userId);
         Map<String, Object> result = driverService.getDriverProfile(params);
         if (result == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("사용자를 찾을 수 없습니다."));
@@ -45,14 +45,14 @@ public class DriverController {
     /** PUT /profile → 운전자 프로필 수정 */
     @PutMapping("/profile")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateDriverProfile(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
         if (userId == null) {
             return ResponseEntity.status(401).body(ApiResponse.error("인증이 필요합니다."));
         }
-        body.put("companyCode", companyCode);
-        body.put("userId", userId);
+        body.put("company_code", companyCode);
+        body.put("user_id", userId);
         driverService.updateDriverProfile(body);
         return ResponseEntity.ok(ApiResponse.success(null, "프로필이 수정되었습니다."));
     }
@@ -60,8 +60,8 @@ public class DriverController {
     /** PUT /status → 차량 상태 변경 (off: 대기, maintenance: 정비) */
     @PutMapping("/status")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateDriverStatus(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
         if (userId == null) {
             return ResponseEntity.status(401).body(ApiResponse.error("인증이 필요합니다."));
@@ -71,7 +71,7 @@ public class DriverController {
             return ResponseEntity.status(400).body(
                     ApiResponse.error("유효하지 않은 상태값입니다. (off: 대기, maintenance: 정비)"));
         }
-        body.put("userId", userId);
+        body.put("user_id", userId);
         driverService.updateDriverStatus(body);
         String msg = "off".equals(status) ? "차량 상태가 대기로 변경되었습니다." : "차량 상태가 정비로 변경되었습니다.";
         return ResponseEntity.ok(ApiResponse.success(null, msg));
@@ -80,13 +80,13 @@ public class DriverController {
     /** DELETE /vehicle → 차량 삭제 (기록 보존) */
     @DeleteMapping("/vehicle")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteDriverVehicle(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId) {
         if (userId == null) {
             return ResponseEntity.status(401).body(ApiResponse.error("인증이 필요합니다."));
         }
         Map<String, Object> params = new HashMap<>();
-        params.put("userId", userId);
+        params.put("user_id", userId);
         driverService.deleteDriverVehicle(params);
         return ResponseEntity.ok(ApiResponse.success(null, "차량이 삭제되었습니다."));
     }
@@ -94,17 +94,17 @@ public class DriverController {
     /** POST /vehicle → 새 차량 등록 */
     @PostMapping("/vehicle")
     public ResponseEntity<ApiResponse<Map<String, Object>>> registerDriverVehicle(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
         if (userId == null) {
             return ResponseEntity.status(401).body(ApiResponse.error("인증이 필요합니다."));
         }
-        if (body.get("vehicleNumber") == null) {
+        if (body.get("vehicle_number") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("차량번호는 필수입니다."));
         }
-        body.put("companyCode", companyCode);
-        body.put("userId", userId);
+        body.put("company_code", companyCode);
+        body.put("user_id", userId);
         driverService.registerDriverVehicle(body);
         return ResponseEntity.ok(ApiResponse.success(null, "차량이 등록되었습니다."));
     }
@@ -112,13 +112,13 @@ public class DriverController {
     /** DELETE /account → 회원 탈퇴 */
     @DeleteMapping("/account")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteDriverAccount(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId) {
         if (userId == null) {
             return ResponseEntity.status(401).body(ApiResponse.error("인증이 필요합니다."));
         }
         Map<String, Object> params = new HashMap<>();
-        params.put("userId", userId);
+        params.put("user_id", userId);
         driverService.deleteDriverAccount(params);
         return ResponseEntity.ok(ApiResponse.success(null, "회원 탈퇴가 완료되었습니다."));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/DynamicFormController.java b/backend-spring/src/main/java/com/erp/controller/DynamicFormController.java
index 197fbd69..eb04e0f7 100644
--- a/backend-spring/src/main/java/com/erp/controller/DynamicFormController.java
+++ b/backend-spring/src/main/java/com/erp/controller/DynamicFormController.java
@@ -25,13 +25,13 @@ public class DynamicFormController {
 
     @PostMapping("/save")
     public ResponseEntity<ApiResponse<Object>> saveFormData(
-            @RequestAttribute("userId") String userId,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("user_id") String userId,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body,
             HttpServletRequest request) {
 
-        Object screenIdRaw = body.get("screenId");
-        String tableName = (String) body.get("tableName");
+        Object screenIdRaw = body.get("screen_id");
+        String tableName = (String) body.get("table_name");
         Map<String, Object> data = (Map<String, Object>) body.get("data");
 
         if (screenIdRaw == null || tableName == null || data == null) {
@@ -70,12 +70,12 @@ public class DynamicFormController {
 
     @PostMapping("/save-enhanced")
     public ResponseEntity<ApiResponse<Object>> saveFormDataEnhanced(
-            @RequestAttribute("userId") String userId,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("user_id") String userId,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
-        Object screenIdRaw = body.get("screenId");
-        String tableName = (String) body.get("tableName");
+        Object screenIdRaw = body.get("screen_id");
+        String tableName = (String) body.get("table_name");
         Map<String, Object> data = (Map<String, Object>) body.get("data");
 
         if (screenIdRaw == null || tableName == null || data == null) {
@@ -111,15 +111,15 @@ public class DynamicFormController {
 
     @PutMapping("/update-field")
     public ResponseEntity<ApiResponse<Object>> updateFieldValue(
-            @RequestAttribute("userId") String userId,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("user_id") String userId,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
-        String tableName = (String) body.get("tableName");
-        String keyField = (String) body.get("keyField");
-        Object keyValue = body.get("keyValue");
-        String updateField = (String) body.get("updateField");
-        Object updateValue = body.get("updateValue");
+        String tableName = (String) body.get("table_name");
+        String keyField = (String) body.get("key_field");
+        Object keyValue = body.get("key_value");
+        String updateField = (String) body.get("update_field");
+        Object updateValue = body.get("update_value");
 
         if (tableName == null || keyField == null || keyValue == null
                 || updateField == null || updateValue == null) {
@@ -150,11 +150,11 @@ public class DynamicFormController {
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Object>> updateFormData(
             @PathVariable String id,
-            @RequestAttribute("userId") String userId,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("user_id") String userId,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
-        String tableName = (String) body.get("tableName");
+        String tableName = (String) body.get("table_name");
         Map<String, Object> data = (Map<String, Object>) body.get("data");
 
         if (tableName == null || data == null) {
@@ -182,13 +182,13 @@ public class DynamicFormController {
     @PatchMapping("/{id}/partial")
     public ResponseEntity<ApiResponse<Object>> updateFormDataPartial(
             @PathVariable String id,
-            @RequestAttribute("userId") String userId,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("user_id") String userId,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
-        String tableName = (String) body.get("tableName");
-        Map<String, Object> originalData = (Map<String, Object>) body.get("originalData");
-        Map<String, Object> newData = (Map<String, Object>) body.get("newData");
+        String tableName = (String) body.get("table_name");
+        Map<String, Object> originalData = (Map<String, Object>) body.get("original_data");
+        Map<String, Object> newData = (Map<String, Object>) body.get("new_data");
 
         if (tableName == null || originalData == null || newData == null) {
             return ResponseEntity.badRequest()
@@ -215,13 +215,13 @@ public class DynamicFormController {
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteFormData(
             @PathVariable String id,
-            @RequestAttribute("userId") String userId,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("user_id") String userId,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody(required = false) Map<String, Object> body) {
 
         if (body == null) body = new HashMap<>();
-        String tableName = (String) body.get("tableName");
-        Object screenIdRaw = body.get("screenId");
+        String tableName = (String) body.get("table_name");
+        Object screenIdRaw = body.get("screen_id");
 
         if (tableName == null) {
             return ResponseEntity.badRequest()
@@ -257,8 +257,8 @@ public class DynamicFormController {
             params.put("page", page);
             params.put("size", size);
             params.put("search", search.isEmpty() ? null : search);
-            params.put("sortBy", sortBy);
-            params.put("sortOrder", sortOrder);
+            params.put("sort_by", sortBy);
+            params.put("sort_order", sortOrder);
             int sid = (screenId != null) ? screenId : 0;
             Map<String, Object> result = dynamicFormService.getFormDataList(sid, params);
             return ResponseEntity.ok(ApiResponse.success(result));
@@ -285,8 +285,8 @@ public class DynamicFormController {
             params.put("page", page);
             params.put("size", size);
             params.put("search", search.isEmpty() ? null : search);
-            params.put("sortBy", sortBy);
-            params.put("sortOrder", sortOrder);
+            params.put("sort_by", sortBy);
+            params.put("sort_order", sortOrder);
 
             Map<String, Object> result = dynamicFormService.getFormDataList(screenId, params);
             return ResponseEntity.ok(ApiResponse.success(result));
@@ -304,7 +304,7 @@ public class DynamicFormController {
         try {
             List<Map<String, Object>> columns = dynamicFormService.getTableColumns(tableName);
             Map<String, Object> data = new LinkedHashMap<>();
-            data.put("tableName", tableName);
+            data.put("table_name", tableName);
             data.put("columns", columns);
             return ResponseEntity.ok(ApiResponse.success(data));
         } catch (Exception e) {
@@ -339,7 +339,7 @@ public class DynamicFormController {
     public ResponseEntity<ApiResponse<Object>> validateFormData(
             @RequestBody Map<String, Object> body) {
 
-        String tableName = (String) body.get("tableName");
+        String tableName = (String) body.get("table_name");
         Map<String, Object> data = (Map<String, Object>) body.get("data");
 
         if (tableName == null || data == null) {
@@ -362,7 +362,7 @@ public class DynamicFormController {
     @GetMapping("/location-history/{tripId}")
     public ResponseEntity<ApiResponse<Object>> getLocationHistory(
             @PathVariable String tripId,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam(required = false) String userId,
             @RequestParam(required = false) String startDate,
             @RequestParam(required = false) String endDate,
@@ -370,11 +370,11 @@ public class DynamicFormController {
 
         try {
             Map<String, Object> params = new LinkedHashMap<>();
-            params.put("companyCode", companyCode);
-            params.put("tripId", tripId);
-            if (userId != null) params.put("userId", userId);
-            if (startDate != null) params.put("startDate", startDate);
-            if (endDate != null) params.put("endDate", endDate);
+            params.put("company_code", companyCode);
+            params.put("trip_id", tripId);
+            if (userId != null) params.put("user_id", userId);
+            if (startDate != null) params.put("start_date", startDate);
+            if (endDate != null) params.put("end_date", endDate);
             params.put("limit", limit != null ? limit : 1000);
 
             List<Map<String, Object>> result = dynamicFormService.getLocationHistory(params);
@@ -395,8 +395,8 @@ public class DynamicFormController {
 
     @PostMapping("/location-history")
     public ResponseEntity<ApiResponse<Object>> saveLocationHistory(
-            @RequestAttribute("userId") String loginUserId,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("user_id") String loginUserId,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
         Double latitude = body.get("latitude") != null ? ((Number) body.get("latitude")).doubleValue() : null;
@@ -407,25 +407,25 @@ public class DynamicFormController {
                     .body(ApiResponse.error("필수 필드가 누락되었습니다. (latitude, longitude)"));
         }
 
-        String userId = body.containsKey("userId") ? (String) body.get("userId") : loginUserId;
+        String userId = body.containsKey("user_id") ? (String) body.get("user_id") : loginUserId;
 
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("userId", userId);
-        params.put("companyCode", companyCode);
+        params.put("user_id", userId);
+        params.put("company_code", companyCode);
         params.put("latitude", latitude);
         params.put("longitude", longitude);
         params.put("accuracy", body.get("accuracy"));
         params.put("altitude", body.get("altitude"));
         params.put("speed", body.get("speed"));
         params.put("heading", body.get("heading"));
-        params.put("tripId", body.get("tripId"));
-        params.put("tripStatus", body.getOrDefault("tripStatus", "active"));
+        params.put("trip_id", body.get("trip_id"));
+        params.put("trip_status", body.getOrDefault("trip_status", "active"));
         params.put("departure", body.get("departure"));
         params.put("arrival", body.get("arrival"));
-        params.put("departureName", body.get("departureName"));
-        params.put("destinationName", body.get("destinationName"));
-        params.put("recordedAt", body.getOrDefault("recordedAt", new java.util.Date().toInstant().toString()));
-        params.put("vehicleId", body.get("vehicleId"));
+        params.put("departure_name", body.get("departure_name"));
+        params.put("destination_name", body.get("destination_name"));
+        params.put("recorded_at", body.getOrDefault("recorded_at", new java.util.Date().toInstant().toString()));
+        params.put("vehicle_id", body.get("vehicle_id"));
 
         try {
             Map<String, Object> result = dynamicFormService.saveLocationHistory(params);
diff --git a/backend-spring/src/main/java/com/erp/controller/EntityJoinController.java b/backend-spring/src/main/java/com/erp/controller/EntityJoinController.java
index 4804dbbf..71d46d74 100644
--- a/backend-spring/src/main/java/com/erp/controller/EntityJoinController.java
+++ b/backend-spring/src/main/java/com/erp/controller/EntityJoinController.java
@@ -38,11 +38,11 @@ public class EntityJoinController {
     @GetMapping("/tables/{tableName}/data-with-joins")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTableDataWithJoins(
             @PathVariable String tableName,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> queryParams) {
 
         Map<String, Object> options = new HashMap<>(queryParams);
-        options.put("companyCode", companyCode);
+        options.put("company_code", companyCode);
 
         // search 파라미터 JSON 파싱
         Object searchRaw = queryParams.get("search");
@@ -56,17 +56,17 @@ public class EntityJoinController {
         }
 
         // autoFilter 파싱 (멀티테넌시)
-        Object autoFilterRaw = queryParams.get("autoFilter");
+        Object autoFilterRaw = queryParams.get("auto_filter");
         if (autoFilterRaw instanceof String af && !af.isBlank()) {
             try {
                 Map<String, Object> autoFilter = objectMapper.readValue(af, new TypeReference<>() {});
                 Boolean enabled = (Boolean) autoFilter.getOrDefault("enabled", false);
                 if (Boolean.TRUE.equals(enabled)) {
-                    String filterColumn = (String) autoFilter.getOrDefault("filterColumn", "company_code");
+                    String filterColumn = (String) autoFilter.getOrDefault("filter_column", "company_code");
                     Map<String, Object> search = getOrCreateSearch(options);
                     String finalCode = companyCode;
-                    if ("*".equals(companyCode) && autoFilter.get("companyCodeOverride") != null) {
-                        finalCode = (String) autoFilter.get("companyCodeOverride");
+                    if ("*".equals(companyCode) && autoFilter.get("company_code_override") != null) {
+                        finalCode = (String) autoFilter.get("company_code_override");
                     }
                     search.put(filterColumn, finalCode);
                     options.put("search", search);
@@ -91,14 +91,14 @@ public class EntityJoinController {
     @GetMapping("/tables/{tableName}/entity-joins")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getEntityJoinConfigs(
             @PathVariable String tableName,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         List<Map<String, Object>> joinConfigs =
                 entityJoinService.detectEntityJoins(tableName, null, companyCode);
 
         Map<String, Object> data = new HashMap<>();
-        data.put("tableName", tableName);
-        data.put("joinConfigs", joinConfigs);
+        data.put("table_name", tableName);
+        data.put("join_configs", joinConfigs);
         data.put("count", joinConfigs.size());
         return ResponseEntity.ok(ApiResponse.success(data, "Entity 조인 설정 조회 성공"));
     }
@@ -111,12 +111,12 @@ public class EntityJoinController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateEntitySettings(
             @PathVariable String tableName,
             @PathVariable String columnName,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
-        String webType = (String) body.get("webType");
-        String referenceTable  = (String) body.get("referenceTable");
-        String referenceColumn = (String) body.get("referenceColumn");
+        String webType = (String) body.get("web_type");
+        String referenceTable  = (String) body.get("reference_table");
+        String referenceColumn = (String) body.get("reference_column");
 
         if ("entity".equals(webType) && (referenceTable == null || referenceColumn == null)) {
             return ResponseEntity.badRequest()
@@ -127,19 +127,19 @@ public class EntityJoinController {
 
         // 관련 캐시 무효화
         if ("entity".equals(webType) && referenceTable != null) {
-            String displayColumn = (String) body.get("displayColumn");
-            String referenceColVal = (String) body.get("referenceColumn");
+            String displayColumn = (String) body.get("display_column");
+            String referenceColVal = (String) body.get("reference_column");
             entityJoinService.invalidateCache(referenceTable, referenceColVal, displayColumn);
         }
 
         Map<String, Object> data = new HashMap<>();
-        data.put("tableName", tableName);
-        data.put("columnName", columnName);
+        data.put("table_name", tableName);
+        data.put("column_name", columnName);
         data.put("settings", Map.of(
-                "webType", webType != null ? webType : "",
-                "referenceTable",  referenceTable  != null ? referenceTable  : "",
-                "referenceColumn", referenceColumn != null ? referenceColumn : "",
-                "displayColumn",   body.getOrDefault("displayColumn", "")));
+                "web_type", webType != null ? webType : "",
+                "reference_table",  referenceTable  != null ? referenceTable  : "",
+                "reference_column", referenceColumn != null ? referenceColumn : "",
+                "display_column",   body.getOrDefault("display_column", "")));
         return ResponseEntity.ok(ApiResponse.success(data, "Entity 설정 업데이트 성공"));
     }
 
@@ -154,7 +154,7 @@ public class EntityJoinController {
     @GetMapping("/tables/{tableName}/entity-join-columns")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getEntityJoinColumns(
             @PathVariable String tableName,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         Map<String, Object> result = entityJoinService.getEntityJoinColumns(tableName, companyCode);
         return ResponseEntity.ok(ApiResponse.success(result, "Entity 조인 컬럼 조회 성공"));
@@ -167,13 +167,13 @@ public class EntityJoinController {
     @GetMapping("/reference-tables/{tableName}/columns")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getReferenceTableColumns(
             @PathVariable String tableName,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         List<Map<String, Object>> columns =
                 entityJoinService.getReferenceTableColumns(tableName, companyCode);
 
         Map<String, Object> data = new HashMap<>();
-        data.put("tableName", tableName);
+        data.put("table_name", tableName);
         data.put("columns", columns);
         data.put("count", columns.size());
         return ResponseEntity.ok(ApiResponse.success(data, "참조 테이블 컬럼 조회 성공"));
@@ -223,7 +223,7 @@ public class EntityJoinController {
         @SuppressWarnings("unchecked")
         List<Map<String, Object>> caches = (List<Map<String, Object>>) cacheStatus.get("caches");
         Map<String, Object> data = new HashMap<>();
-        data.put("preloadedCaches", caches != null ? caches.size() : 0);
+        data.put("preloaded_caches", caches != null ? caches.size() : 0);
         data.put("caches", caches);
         return ResponseEntity.ok(ApiResponse.success(data, "공통 참조 테이블 캐싱 완료"));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/EntityReferenceController.java b/backend-spring/src/main/java/com/erp/controller/EntityReferenceController.java
index 86063937..587230e6 100644
--- a/backend-spring/src/main/java/com/erp/controller/EntityReferenceController.java
+++ b/backend-spring/src/main/java/com/erp/controller/EntityReferenceController.java
@@ -30,11 +30,11 @@ public class EntityReferenceController {
             @PathVariable String codeCategory,
             @RequestParam(required = false, defaultValue = "100") Integer limit,
             @RequestParam(required = false) String search,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         Map<String, Object> params = new HashMap<>();
-        params.put("codeCategory", codeCategory);
-        params.put("companyCode",  companyCode);
+        params.put("code_category", codeCategory);
+        params.put("company_code",  companyCode);
         params.put("limit",        limit);
         if (search != null) params.put("search", search);
 
@@ -56,12 +56,12 @@ public class EntityReferenceController {
             @PathVariable String columnName,
             @RequestParam(required = false, defaultValue = "100") Integer limit,
             @RequestParam(required = false) String search,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName",   tableName);
-        params.put("columnName",  columnName);
-        params.put("companyCode", companyCode);
+        params.put("table_name",   tableName);
+        params.put("column_name",  columnName);
+        params.put("company_code", companyCode);
         params.put("limit",       limit);
         if (search != null) params.put("search", search);
 
diff --git a/backend-spring/src/main/java/com/erp/controller/EntitySearchController.java b/backend-spring/src/main/java/com/erp/controller/EntitySearchController.java
index 77845dfe..fea1a04d 100644
--- a/backend-spring/src/main/java/com/erp/controller/EntitySearchController.java
+++ b/backend-spring/src/main/java/com/erp/controller/EntitySearchController.java
@@ -39,7 +39,7 @@ public class EntitySearchController {
             @RequestParam(defaultValue = "{}") String filterCondition,
             @RequestParam(defaultValue = "1")  String page,
             @RequestParam(defaultValue = "20") String limit,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         if (tableName == null || tableName.isBlank()
                 || "undefined".equals(tableName) || "null".equals(tableName)) {
@@ -48,11 +48,11 @@ public class EntitySearchController {
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName",       tableName);
-        params.put("companyCode",     companyCode);
-        params.put("searchText",      searchText);
-        params.put("searchFields",    searchFields);
-        params.put("filterCondition", filterCondition);
+        params.put("table_name",       tableName);
+        params.put("company_code",     companyCode);
+        params.put("search_text",      searchText);
+        params.put("search_fields",    searchFields);
+        params.put("filter_condition", filterCondition);
         params.put("page",            page);
         params.put("limit",           limit);
 
@@ -83,7 +83,7 @@ public class EntitySearchController {
             @RequestParam(defaultValue = "name") String label,
             @RequestParam(required = false)      String fields,
             @RequestParam(required = false)      String filters,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         if (tableName == null || tableName.isBlank()
                 || "undefined".equals(tableName) || "null".equals(tableName)) {
@@ -91,8 +91,8 @@ public class EntitySearchController {
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName",   tableName);
-        params.put("companyCode", companyCode);
+        params.put("table_name",   tableName);
+        params.put("company_code", companyCode);
         params.put("value",       value);
         params.put("label",       label);
         params.put("fields",      fields);
@@ -118,7 +118,7 @@ public class EntitySearchController {
             @PathVariable String columnName,
             @RequestParam(required = false) String labelColumn,
             @RequestParam(required = false) String filters,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         if (tableName == null || tableName.isBlank()
                 || "undefined".equals(tableName) || "null".equals(tableName)) {
@@ -130,10 +130,10 @@ public class EntitySearchController {
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName",   tableName);
-        params.put("columnName",  columnName);
-        params.put("companyCode", companyCode);
-        params.put("labelColumn", labelColumn);
+        params.put("table_name",   tableName);
+        params.put("column_name",  columnName);
+        params.put("company_code", companyCode);
+        params.put("label_column", labelColumn);
         params.put("filters",     filters);
 
         try {
diff --git a/backend-spring/src/main/java/com/erp/controller/ExcelMappingController.java b/backend-spring/src/main/java/com/erp/controller/ExcelMappingController.java
index 2cadd03c..f9e33343 100644
--- a/backend-spring/src/main/java/com/erp/controller/ExcelMappingController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ExcelMappingController.java
@@ -18,46 +18,46 @@ public class ExcelMappingController {
 
     @PostMapping("/find")
     public ResponseEntity<ApiResponse<Map<String, Object>>> findMappingByColumns(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        if (body.get("tableName") == null || body.get("excelColumns") == null) {
+        if (body.get("table_name") == null || body.get("excel_columns") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("tableName과 excelColumns는 필수입니다."));
         }
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         Map<String, Object> result = excelMappingService.findMappingByColumns(body);
         return ResponseEntity.ok(ApiResponse.success(result));
     }
 
     @PostMapping("/save")
     public ResponseEntity<ApiResponse<Map<String, Object>>> saveMappingTemplate(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        if (body.get("tableName") == null || body.get("excelColumns") == null || body.get("columnMappings") == null) {
+        if (body.get("table_name") == null || body.get("excel_columns") == null || body.get("column_mappings") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("tableName, excelColumns, columnMappings는 필수입니다."));
         }
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         Map<String, Object> result = excelMappingService.saveMappingTemplate(body);
         return ResponseEntity.ok(ApiResponse.success(result, "매핑 템플릿이 저장되었습니다."));
     }
 
     @GetMapping("/list/{tableName}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getMappingTemplates(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("companyCode", companyCode);
+        params.put("table_name", tableName);
+        params.put("company_code", companyCode);
         List<Map<String, Object>> result = excelMappingService.getMappingTemplates(params);
         return ResponseEntity.ok(ApiResponse.success(result));
     }
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteMappingTemplate(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
         params.put("id", id);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         boolean deleted = excelMappingService.deleteMappingTemplate(params);
         if (!deleted) {
             return ResponseEntity.status(404).body(ApiResponse.error("매핑 템플릿을 찾을 수 없습니다."));
diff --git a/backend-spring/src/main/java/com/erp/controller/ExternalCallConfigController.java b/backend-spring/src/main/java/com/erp/controller/ExternalCallConfigController.java
index d98b51c8..4bb3ef89 100644
--- a/backend-spring/src/main/java/com/erp/controller/ExternalCallConfigController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ExternalCallConfigController.java
@@ -25,9 +25,9 @@ public class ExternalCallConfigController {
      */
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getExternalCallConfigList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> queryParams) {
-        queryParams.put("companyCode", companyCode);
+        queryParams.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
             externalCallConfigService.getExternalCallConfigList(queryParams)));
     }
@@ -39,7 +39,7 @@ public class ExternalCallConfigController {
      */
     @GetMapping("/for-button-control")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getExternalCallConfigForButtonControl(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(
             externalCallConfigService.getExternalCallConfigForButtonControl(companyCode)));
     }
@@ -51,10 +51,10 @@ public class ExternalCallConfigController {
      */
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getExternalCallConfigInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         Map<String, Object> config = externalCallConfigService.getExternalCallConfigInfo(params);
         if (config == null) {
@@ -71,10 +71,10 @@ public class ExternalCallConfigController {
      */
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertExternalCallConfig(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("created_by", userId);
         body.put("updated_by", userId);
         try {
@@ -93,11 +93,11 @@ public class ExternalCallConfigController {
      */
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateExternalCallConfig(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable int id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("updated_by", userId);
         body.put("id", id);
         try {
@@ -117,13 +117,13 @@ public class ExternalCallConfigController {
      */
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteExternalCallConfig(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable int id) {
         Map<String, Object> params = new HashMap<>();
         params.put("id", id);
-        params.put("companyCode", companyCode);
-        params.put("updatedBy", userId);
+        params.put("company_code", companyCode);
+        params.put("updated_by", userId);
         try {
             externalCallConfigService.deleteExternalCallConfig(params);
             return ResponseEntity.ok(ApiResponse.success(null, "외부 호출 설정이 성공적으로 삭제되었습니다."));
@@ -139,7 +139,7 @@ public class ExternalCallConfigController {
      */
     @PostMapping("/{id}/test")
     public ResponseEntity<ApiResponse<Map<String, Object>>> testExternalCallConfig(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int id) {
         Map<String, Object> result = externalCallConfigService.testExternalCallConfig(id);
         String message = (String) result.get("message");
@@ -153,13 +153,13 @@ public class ExternalCallConfigController {
      */
     @PostMapping("/{id}/execute")
     public ResponseEntity<ApiResponse<Map<String, Object>>> executeExternalCallConfig(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable int id,
             @RequestBody(required = false) Map<String, Object> body) {
         Map<String, Object> contextData = body != null ? new HashMap<>(body) : new HashMap<>();
-        contextData.put("userId", userId);
-        contextData.put("companyCode", companyCode);
+        contextData.put("user_id", userId);
+        contextData.put("company_code", companyCode);
         Map<String, Object> result = externalCallConfigService.executeExternalCallConfig(id, contextData);
         String message = (String) result.get("message");
         return ResponseEntity.ok(ApiResponse.success(result, message));
diff --git a/backend-spring/src/main/java/com/erp/controller/ExternalCallController.java b/backend-spring/src/main/java/com/erp/controller/ExternalCallController.java
index c82ea772..d2981399 100644
--- a/backend-spring/src/main/java/com/erp/controller/ExternalCallController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ExternalCallController.java
@@ -22,7 +22,7 @@ public class ExternalCallController {
     @SuppressWarnings("unchecked")
     @PostMapping("/test")
     public ResponseEntity<ApiResponse<Map<String, Object>>> testExternalCall(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
         Map<String, Object> settings = (Map<String, Object>) body.get("settings");
@@ -41,20 +41,20 @@ public class ExternalCallController {
         }
 
         // 테스트 요청 생성
-        Map<String, Object> templateData = (Map<String, Object>) body.get("templateData");
+        Map<String, Object> templateData = (Map<String, Object>) body.get("template_data");
         if (templateData == null) {
             templateData = Map.of(
-                "recordCount", 5,
-                "tableName", "test_table",
+                "record_count", 5,
+                "table_name", "test_table",
                 "timestamp", new Date().toString()
             );
         }
 
         Map<String, Object> request = new LinkedHashMap<>();
-        request.put("diagramId", 0);
-        request.put("relationshipId", "test");
+        request.put("diagram_id", 0);
+        request.put("relationship_id", "test");
         request.put("settings", settings);
-        request.put("templateData", templateData);
+        request.put("template_data", templateData);
 
         Map<String, Object> result = service.executeExternalCall(request);
         boolean success = Boolean.TRUE.equals(result.get("success"));
@@ -70,11 +70,11 @@ public class ExternalCallController {
     @SuppressWarnings("unchecked")
     @PostMapping("/execute")
     public ResponseEntity<ApiResponse<Map<String, Object>>> executeExternalCall(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
-        Object diagramId = body.get("diagramId");
-        String relationshipId = (String) body.get("relationshipId");
+        Object diagramId = body.get("diagram_id");
+        String relationshipId = (String) body.get("relationship_id");
         Map<String, Object> settings = (Map<String, Object>) body.get("settings");
 
         if (diagramId == null || relationshipId == null || settings == null) {
@@ -102,7 +102,7 @@ public class ExternalCallController {
 
     @GetMapping("/types")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getExternalCallTypeList(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> types = service.getExternalCallTypeList();
         return ResponseEntity.ok(ApiResponse.success(types, "지원되는 외부 호출 타입 목록"));
     }
@@ -112,7 +112,7 @@ public class ExternalCallController {
     @SuppressWarnings("unchecked")
     @PostMapping("/validate")
     public ResponseEntity<ApiResponse<Map<String, Object>>> validateExternalCallSettings(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
         Map<String, Object> settings = (Map<String, Object>) body.get("settings");
diff --git a/backend-spring/src/main/java/com/erp/controller/ExternalDbConnectionController.java b/backend-spring/src/main/java/com/erp/controller/ExternalDbConnectionController.java
index 78ff1449..c8657c00 100644
--- a/backend-spring/src/main/java/com/erp/controller/ExternalDbConnectionController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ExternalDbConnectionController.java
@@ -33,7 +33,7 @@ public class ExternalDbConnectionController {
      */
     @GetMapping("/types/supported")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getSupportedTypes(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(
             ApiResponse.success(service.getSupportedTypes(), "지원하는 DB 타입 목록을 조회했습니다."));
     }
@@ -45,9 +45,9 @@ public class ExternalDbConnectionController {
      */
     @GetMapping("/pool-status")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getPoolStatus(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> status = service.getPoolStatus();
-        String msg = status.get("totalPools") + "개의 연결 풀 상태를 조회했습니다.";
+        String msg = status.get("total_pools") + "개의 연결 풀 상태를 조회했습니다.";
         return ResponseEntity.ok(ApiResponse.success(status, msg));
     }
 
@@ -58,7 +58,7 @@ public class ExternalDbConnectionController {
      */
     @GetMapping("/grouped")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getConnectionsGroupedByType(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> queryParams) {
         buildFilter(queryParams, companyCode, (String) queryParams.get("company_code"));
         Map<String, Object> grouped = service.getConnectionsGroupedByType(queryParams);
@@ -73,7 +73,7 @@ public class ExternalDbConnectionController {
      */
     @GetMapping("/control/active")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getActiveConnectionsForControl(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam(required = false) String company_code) {
         Map<String, Object> params = new HashMap<>();
         buildFilter(params, companyCode, company_code);
@@ -89,7 +89,7 @@ public class ExternalDbConnectionController {
      */
     @GetMapping
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getConnections(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> queryParams) {
         buildFilter(queryParams, companyCode, (String) queryParams.get("company_code"));
         List<Map<String, Object>> list = service.getConnections(queryParams);
@@ -104,7 +104,7 @@ public class ExternalDbConnectionController {
      */
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getConnectionById(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable long id) {
         Map<String, Object> conn = service.getConnectionById(id);
         if (conn == null) {
@@ -121,8 +121,8 @@ public class ExternalDbConnectionController {
      */
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createConnection(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
         body.put("created_by", userId);
         body.put("updated_by", userId);
@@ -142,8 +142,8 @@ public class ExternalDbConnectionController {
      */
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateConnection(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable long id,
             @RequestBody Map<String, Object> body) {
         body.put("updated_by", userId);
@@ -164,7 +164,7 @@ public class ExternalDbConnectionController {
      */
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable long id) {
         try {
             service.deleteConnection(id, companyCode);
@@ -181,7 +181,7 @@ public class ExternalDbConnectionController {
      */
     @PostMapping("/{id}/test")
     public ResponseEntity<ApiResponse<Map<String, Object>>> testConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable long id,
             @RequestBody(required = false) Map<String, Object> body) {
         String testPassword = body != null ? (String) body.get("password") : null;
@@ -197,7 +197,7 @@ public class ExternalDbConnectionController {
      */
     @PostMapping("/{id}/execute")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> executeQuery(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable long id,
             @RequestBody Map<String, Object> body) {
         String sql = (String) body.get("query");
@@ -225,7 +225,7 @@ public class ExternalDbConnectionController {
      */
     @GetMapping("/{id}/tables")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTables(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable long id) {
         try {
             List<Map<String, Object>> tables = service.getTables(id);
@@ -243,7 +243,7 @@ public class ExternalDbConnectionController {
      */
     @GetMapping("/{id}/tables/{tableName}/columns")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTableColumns(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable long id,
             @PathVariable String tableName) {
         if (tableName == null || tableName.isBlank()) {
@@ -270,12 +270,12 @@ public class ExternalDbConnectionController {
         if ("*".equals(userCompanyCode)) {
             // SUPER_ADMIN: query param이 있으면 그것, 없으면 전체(null → WHERE 없음)
             if (queryCompanyCode != null && !queryCompanyCode.isBlank()) {
-                params.put("filterCompanyCode", queryCompanyCode);
+                params.put("filter_company_code", queryCompanyCode);
             }
             // filterCompanyCode 없으면 전체 조회
         } else {
             // 일반 사용자: 강제 적용
-            params.put("filterCompanyCode", userCompanyCode);
+            params.put("filter_company_code", userCompanyCode);
         }
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/ExternalRestApiConnectionController.java b/backend-spring/src/main/java/com/erp/controller/ExternalRestApiConnectionController.java
index 49b57bc6..b3b85425 100644
--- a/backend-spring/src/main/java/com/erp/controller/ExternalRestApiConnectionController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ExternalRestApiConnectionController.java
@@ -21,9 +21,9 @@ public class ExternalRestApiConnectionController {
 
     @GetMapping
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getConnections(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> queryParams) {
-        queryParams.put("companyCode", companyCode);
+        queryParams.put("company_code", companyCode);
         List<Map<String, Object>> list = service.getExternalRestApiConnectionList(queryParams);
         return ResponseEntity.ok(
             ApiResponse.success(list, list.size() + "개의 REST API 연결을 조회했습니다."));
@@ -33,11 +33,11 @@ public class ExternalRestApiConnectionController {
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getConnectionById(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int id) {
         Map<String, Object> params = new HashMap<>();
         params.put("id", id);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         Map<String, Object> conn = service.getExternalRestApiConnectionInfo(params);
         if (conn == null) {
             return ResponseEntity.status(404)
@@ -50,11 +50,11 @@ public class ExternalRestApiConnectionController {
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createConnection(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("createdBy", userId);
+        body.put("company_code", companyCode);
+        body.put("created_by", userId);
         try {
             Map<String, Object> created = service.insertExternalRestApiConnection(body);
             return ResponseEntity.status(201)
@@ -68,12 +68,12 @@ public class ExternalRestApiConnectionController {
 
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateConnection(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable int id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("updatedBy", userId);
+        body.put("company_code", companyCode);
+        body.put("updated_by", userId);
         Map<String, Object> updated = service.updateExternalRestApiConnection(id, body);
         if (updated == null) {
             return ResponseEntity.status(404)
@@ -86,10 +86,10 @@ public class ExternalRestApiConnectionController {
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         boolean deleted = service.deleteExternalRestApiConnection(id, params);
         if (!deleted) {
             return ResponseEntity.status(404)
@@ -102,7 +102,7 @@ public class ExternalRestApiConnectionController {
 
     @PostMapping("/test")
     public ResponseEntity<ApiResponse<Map<String, Object>>> testConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
         Map<String, Object> result = service.testConnection(body, companyCode);
         boolean success = Boolean.TRUE.equals(result.get("success"));
@@ -114,7 +114,7 @@ public class ExternalRestApiConnectionController {
 
     @PostMapping("/{id}/test")
     public ResponseEntity<ApiResponse<Map<String, Object>>> testConnectionById(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int id,
             @RequestBody(required = false) Map<String, Object> body) {
         String endpoint = body != null ? (String) body.get("endpoint") : null;
@@ -128,11 +128,11 @@ public class ExternalRestApiConnectionController {
 
     @PostMapping("/{id}/fetch")
     public ResponseEntity<ApiResponse<Map<String, Object>>> fetchData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int id,
             @RequestBody(required = false) Map<String, Object> body) {
         Map<String, Object> params = body != null ? new HashMap<>(body) : new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         String endpoint = (String) params.get("endpoint");
         String jsonPath = (String) params.get("json_path");
         Map<String, Object> result = service.fetchData(id, endpoint, jsonPath, params);
diff --git a/backend-spring/src/main/java/com/erp/controller/FileController.java b/backend-spring/src/main/java/com/erp/controller/FileController.java
index 2580c59f..11241c5e 100644
--- a/backend-spring/src/main/java/com/erp/controller/FileController.java
+++ b/backend-spring/src/main/java/com/erp/controller/FileController.java
@@ -32,17 +32,17 @@ public class FileController {
 
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getFileList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(fileService.getFileList(params)));
     }
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getFileListAlias(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(fileService.getFileList(params)));
     }
 
@@ -60,12 +60,12 @@ public class FileController {
         // 공개 응답: 메타데이터만 반환
         Map<String, Object> result = new HashMap<>();
         result.put("objid", fileInfo.get("objid"));
-        result.put("realFileName", fileInfo.get("realFileName"));
-        result.put("fileSize", fileInfo.get("fileSize"));
-        result.put("fileExt", fileInfo.get("fileExt"));
-        result.put("filePath", fileInfo.get("filePath"));
+        result.put("real_file_name", fileInfo.get("real_file_name"));
+        result.put("file_size", fileInfo.get("file_size"));
+        result.put("file_ext", fileInfo.get("file_ext"));
+        result.put("file_path", fileInfo.get("file_path"));
         result.put("regdate", fileInfo.get("regdate"));
-        result.put("isRepresentative", fileInfo.get("isRepresentative"));
+        result.put("is_representative", fileInfo.get("is_representative"));
         return ResponseEntity.ok(ApiResponse.success(result));
     }
 
@@ -73,12 +73,12 @@ public class FileController {
 
     @GetMapping("/linked/{tableName}/{recordId}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getLinkedFiles(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @PathVariable String recordId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("targetObjid", tableName + ":" + recordId);
+        params.put("company_code", companyCode);
+        params.put("target_objid", tableName + ":" + recordId);
         return ResponseEntity.ok(ApiResponse.success(fileService.getFilesByTarget(params)));
     }
 
@@ -86,13 +86,13 @@ public class FileController {
 
     @PostMapping("/upload")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> uploadFiles(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestParam("file") List<MultipartFile> files,
             @RequestParam Map<String, Object> params) {
         try {
-            params.put("companyCode", companyCode);
-            params.put("userId", userId != null ? userId : "system");
+            params.put("company_code", companyCode);
+            params.put("user_id", userId != null ? userId : "system");
             List<Map<String, Object>> results = fileService.uploadFiles(files, params);
             return ResponseEntity.ok(ApiResponse.success(results, "파일 업로드 완료"));
         } catch (IllegalArgumentException e) {
@@ -107,10 +107,10 @@ public class FileController {
 
     @GetMapping("/download/{objid}")
     public ResponseEntity<Resource> downloadFile(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long objid) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("objid", objid);
         Map<String, Object> fileInfo = fileService.getFileInfo(params);
         if (fileInfo == null) {
@@ -121,7 +121,7 @@ public class FileController {
             if (!Files.exists(filePath)) {
                 return ResponseEntity.notFound().build();
             }
-            String realFileName = (String) fileInfo.getOrDefault("realFileName", "download");
+            String realFileName = (String) fileInfo.getOrDefault("real_file_name", "download");
             String encodedName = URLEncoder.encode(realFileName, StandardCharsets.UTF_8)
                                            .replace("+", "%20");
             Resource resource = new FileSystemResource(filePath);
@@ -166,10 +166,10 @@ public class FileController {
 
     @DeleteMapping("/{objid}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteFile(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long objid) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("objid", objid);
         fileService.deleteFile(params);
         return ResponseEntity.ok(ApiResponse.success(null, "파일이 삭제되었습니다."));
diff --git a/backend-spring/src/main/java/com/erp/controller/FlowController.java b/backend-spring/src/main/java/com/erp/controller/FlowController.java
index 19d912d7..85aae2b5 100644
--- a/backend-spring/src/main/java/com/erp/controller/FlowController.java
+++ b/backend-spring/src/main/java/com/erp/controller/FlowController.java
@@ -41,15 +41,15 @@ public class FlowController {
 
     @GetMapping("/definitions")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getFlowDefinitionList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(service.getFlowDefinitionList(params)));
     }
 
     @GetMapping("/definitions/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getFlowDefinitionInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable("id") int id) {
         Map<String, Object> detail = service.getFlowDefinitionInfo(id, companyCode);
         if (detail == null) {
@@ -60,8 +60,8 @@ public class FlowController {
 
     @PostMapping("/definitions")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertFlowDefinition(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
         if (body.get("name") == null) {
@@ -69,8 +69,8 @@ public class FlowController {
         }
 
         // 테이블 존재 확인 (REST API / multi 제외)
-        String tableName  = (String) body.get("tableName");
-        String dbSource   = (String) body.getOrDefault("dbSourceType", "internal");
+        String tableName  = (String) body.get("table_name");
+        String dbSource   = (String) body.getOrDefault("db_source_type", "internal");
         boolean skipCheck = "restapi".equals(dbSource)
                 || "multi_restapi".equals(dbSource)
                 || "multi_external_db".equals(dbSource)
@@ -95,7 +95,7 @@ public class FlowController {
 
     @PutMapping("/definitions/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateFlowDefinition(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable("id") int id,
             @RequestBody Map<String, Object> body) {
         if (service.getFlowDefinitionById(id, companyCode) == null) {
@@ -114,7 +114,7 @@ public class FlowController {
 
     @DeleteMapping("/definitions/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteFlowDefinition(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable("id") int id) {
         boolean deleted = service.deleteFlowDefinition(id, companyCode);
         if (!deleted) {
@@ -129,17 +129,17 @@ public class FlowController {
 
     @GetMapping("/definitions/{flowId}/steps")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getFlowStepList(
-            @PathVariable("flowId") int flowId) {
+            @PathVariable("flow_id") int flowId) {
         return ResponseEntity.ok(ApiResponse.success(service.getFlowStepList(flowId)));
     }
 
     @PostMapping("/definitions/{flowId}/steps")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertFlowStep(
-            @RequestAttribute("companyCode") String companyCode,
-            @PathVariable("flowId") int flowId,
+            @RequestAttribute("company_code") String companyCode,
+            @PathVariable("flow_id") int flowId,
             @RequestBody Map<String, Object> body) {
 
-        if (body.get("stepName") == null || body.get("stepOrder") == null) {
+        if (body.get("step_name") == null || body.get("step_order") == null) {
             return ResponseEntity.status(400)
                     .body(ApiResponse.error("stepName and stepOrder are required"));
         }
@@ -161,8 +161,8 @@ public class FlowController {
 
     @PutMapping("/steps/{stepId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateFlowStep(
-            @RequestAttribute("companyCode") String companyCode,
-            @PathVariable("stepId") int stepId,
+            @RequestAttribute("company_code") String companyCode,
+            @PathVariable("step_id") int stepId,
             @RequestBody Map<String, Object> body) {
 
         // 스텝 소유권 검증: 스텝이 속한 플로우가 요청자 회사 소유인지 확인
@@ -191,8 +191,8 @@ public class FlowController {
 
     @DeleteMapping("/steps/{stepId}")
     public ResponseEntity<ApiResponse<Void>> deleteFlowStep(
-            @RequestAttribute("companyCode") String companyCode,
-            @PathVariable("stepId") int stepId) {
+            @RequestAttribute("company_code") String companyCode,
+            @PathVariable("step_id") int stepId) {
 
         Map<String, Object> existingStep = service.getFlowStepById(stepId);
         if (existingStep != null) {
@@ -216,18 +216,18 @@ public class FlowController {
 
     @GetMapping("/connections/{flowId}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getFlowConnectionList(
-            @PathVariable("flowId") int flowId) {
+            @PathVariable("flow_id") int flowId) {
         return ResponseEntity.ok(ApiResponse.success(service.getFlowConnectionList(flowId)));
     }
 
     @PostMapping("/connections")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertFlowConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
-        Object flowDefIdRaw = body.get("flowDefinitionId");
-        Object fromRaw      = body.get("fromStepId");
-        Object toRaw        = body.get("toStepId");
+        Object flowDefIdRaw = body.get("flow_definition_id");
+        Object fromRaw      = body.get("from_step_id");
+        Object toRaw        = body.get("to_step_id");
 
         if (flowDefIdRaw == null || fromRaw == null || toRaw == null) {
             return ResponseEntity.status(400)
@@ -264,8 +264,8 @@ public class FlowController {
 
     @DeleteMapping("/connections/{connectionId}")
     public ResponseEntity<ApiResponse<Void>> deleteFlowConnection(
-            @RequestAttribute("companyCode") String companyCode,
-            @PathVariable("connectionId") int connectionId) {
+            @RequestAttribute("company_code") String companyCode,
+            @PathVariable("connection_id") int connectionId) {
 
         Map<String, Object> existingConn = service.getFlowConnectionById(connectionId);
         if (existingConn != null) {
@@ -288,8 +288,8 @@ public class FlowController {
 
     @GetMapping("/{flowId}/step/{stepId}/count")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getFlowStepDataCount(
-            @PathVariable("flowId") int flowId,
-            @PathVariable("stepId") int stepId) {
+            @PathVariable("flow_id") int flowId,
+            @PathVariable("step_id") int stepId) {
         try {
             return ResponseEntity.ok(ApiResponse.success(service.getFlowStepDataCount(flowId, stepId)));
         } catch (Exception e) {
@@ -302,8 +302,8 @@ public class FlowController {
 
     @GetMapping("/{flowId}/step/{stepId}/list")
     public ResponseEntity<ApiResponse<Object>> getFlowStepDataList(
-            @PathVariable("flowId")  int flowId,
-            @PathVariable("stepId")  int stepId,
+            @PathVariable("flow_id")  int flowId,
+            @PathVariable("step_id")  int stepId,
             @RequestParam(defaultValue = "1")  int page,
             @RequestParam(defaultValue = "20") int pageSize) {
         try {
@@ -319,8 +319,8 @@ public class FlowController {
 
     @GetMapping("/{flowId}/step/{stepId}/column-labels")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getFlowColumnLabelList(
-            @PathVariable("flowId") int flowId,
-            @PathVariable("stepId") int stepId) {
+            @PathVariable("flow_id") int flowId,
+            @PathVariable("step_id") int stepId) {
         try {
             Map<String, Object> step = service.getFlowStepById(stepId);
             if (step == null) {
@@ -342,7 +342,7 @@ public class FlowController {
 
     @GetMapping("/{flowId}/steps/counts")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getFlowStepCountList(
-            @PathVariable("flowId") int flowId) {
+            @PathVariable("flow_id") int flowId) {
         try {
             return ResponseEntity.ok(ApiResponse.success(service.getFlowStepCountList(flowId)));
         } catch (Exception e) {
@@ -355,11 +355,11 @@ public class FlowController {
 
     @PutMapping("/{flowId}/step/{stepId}/data/{recordId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateFlowStepData(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
-            @PathVariable("flowId")   int flowId,
-            @PathVariable("stepId")   int stepId,
-            @PathVariable("recordId") String recordId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
+            @PathVariable("flow_id")   int flowId,
+            @PathVariable("step_id")   int stepId,
+            @PathVariable("record_id") String recordId,
             @RequestBody Map<String, Object> updateData) {
 
         if (updateData == null || updateData.isEmpty()) {
@@ -385,13 +385,13 @@ public class FlowController {
 
     @PostMapping("/move")
     public ResponseEntity<ApiResponse<Void>> moveData(
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
-        Object flowId    = body.get("flowId");
-        Object fromStepId = body.get("fromStepId");
-        Object recordId  = body.get("recordId");
-        Object toStepId  = body.get("toStepId");
+        Object flowId    = body.get("flow_id");
+        Object fromStepId = body.get("from_step_id");
+        Object recordId  = body.get("record_id");
+        Object toStepId  = body.get("to_step_id");
 
         if (flowId == null || fromStepId == null || recordId == null || toStepId == null) {
             return ResponseEntity.status(400)
@@ -412,13 +412,13 @@ public class FlowController {
 
     @PostMapping("/move-batch")
     public ResponseEntity<ApiResponse<Map<String, Object>>> moveBatchData(
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
-        Object flowId    = body.get("flowId");
-        Object fromStepId = body.get("fromStepId");
-        Object toStepId  = body.get("toStepId");
-        Object dataIds   = body.get("dataIds");
+        Object flowId    = body.get("flow_id");
+        Object fromStepId = body.get("from_step_id");
+        Object toStepId  = body.get("to_step_id");
+        Object dataIds   = body.get("data_ids");
 
         if (flowId == null || fromStepId == null || toStepId == null
                 || !(dataIds instanceof List)) {
@@ -449,8 +449,8 @@ public class FlowController {
                     : successCount + "건 성공, " + failureCount + "건 실패";
 
             Map<String, Object> data = new java.util.LinkedHashMap<>();
-            data.put("successCount", successCount);
-            data.put("failureCount", failureCount);
+            data.put("success_count", successCount);
+            data.put("failure_count", failureCount);
             data.put("total", ids.size());
             result.put("message", message);
             result.put("data", data);
@@ -471,7 +471,7 @@ public class FlowController {
     /** GET /audit/:flowId — 플로우 전체 이력 */
     @GetMapping("/audit/{flowId}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getFlowAuditLogList(
-            @PathVariable("flowId") int flowId,
+            @PathVariable("flow_id") int flowId,
             @RequestParam(defaultValue = "100") int limit) {
         try {
             return ResponseEntity.ok(ApiResponse.success(service.getFlowAuditLogList(flowId, limit)));
@@ -486,8 +486,8 @@ public class FlowController {
     /** GET /audit/:flowId/:recordId — 특정 레코드 이력 */
     @GetMapping("/audit/{flowId}/{recordId}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getFlowAuditLogListByRecord(
-            @PathVariable("flowId")   int flowId,
-            @PathVariable("recordId") String recordId) {
+            @PathVariable("flow_id")   int flowId,
+            @PathVariable("record_id") String recordId) {
         try {
             return ResponseEntity.ok(ApiResponse.success(service.getFlowAuditLogListByRecord(flowId, recordId)));
         } catch (Exception e) {
diff --git a/backend-spring/src/main/java/com/erp/controller/FlowExternalDbConnectionController.java b/backend-spring/src/main/java/com/erp/controller/FlowExternalDbConnectionController.java
index 7c712f5f..39b7b8d0 100644
--- a/backend-spring/src/main/java/com/erp/controller/FlowExternalDbConnectionController.java
+++ b/backend-spring/src/main/java/com/erp/controller/FlowExternalDbConnectionController.java
@@ -33,7 +33,7 @@ public class FlowExternalDbConnectionController {
 
     @GetMapping
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getAll(
-            @RequestAttribute(value = "companyCode", required = false) String companyCode,
+            @RequestAttribute(value = "company_code", required = false) String companyCode,
             @RequestParam(required = false, defaultValue = "false") String activeOnly) {
         try {
             boolean active = "true".equalsIgnoreCase(activeOnly);
@@ -49,7 +49,7 @@ public class FlowExternalDbConnectionController {
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getById(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int id) {
         try {
             Map<String, Object> conn = service.findById(id);
@@ -67,12 +67,12 @@ public class FlowExternalDbConnectionController {
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> create(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
         // 필수 필드 검증
-        if (isBlank(body, "name") || isBlank(body, "dbType") || isBlank(body, "db_type") && isBlank(body, "dbType")
+        if (isBlank(body, "name") || isBlank(body, "db_type") || isBlank(body, "db_type") && isBlank(body, "db_type")
                 || isBlank(body, "host") || body.get("port") == null
-                || isBlank(body, "databaseName") && isBlank(body, "database_name")
+                || isBlank(body, "database_name") && isBlank(body, "database_name")
                 || isBlank(body, "username") || isBlank(body, "password")) {
             return ResponseEntity.status(400)
                     .body(ApiResponse.error("필수 필드가 누락되었습니다"));
@@ -92,7 +92,7 @@ public class FlowExternalDbConnectionController {
 
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> update(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int id,
             @RequestBody Map<String, Object> body) {
         try {
@@ -113,7 +113,7 @@ public class FlowExternalDbConnectionController {
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Void>> delete(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int id) {
         try {
             boolean deleted = service.delete(id);
@@ -132,7 +132,7 @@ public class FlowExternalDbConnectionController {
 
     @PostMapping("/{id}/test")
     public ResponseEntity<ApiResponse<Void>> testConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int id) {
         try {
             Map<String, Object> result = service.testConnection(id);
@@ -154,7 +154,7 @@ public class FlowExternalDbConnectionController {
 
     @GetMapping("/{id}/tables")
     public ResponseEntity<?> getTables(
-            @RequestAttribute(value = "companyCode", required = false) String companyCode,
+            @RequestAttribute(value = "company_code", required = false) String companyCode,
             @PathVariable int id) {
         try {
             Map<String, Object> result = service.getTables(id);
@@ -171,7 +171,7 @@ public class FlowExternalDbConnectionController {
 
     @GetMapping("/{id}/tables/{tableName}/columns")
     public ResponseEntity<?> getTableColumns(
-            @RequestAttribute(value = "companyCode", required = false) String companyCode,
+            @RequestAttribute(value = "company_code", required = false) String companyCode,
             @PathVariable int id,
             @PathVariable String tableName) {
         try {
diff --git a/backend-spring/src/main/java/com/erp/controller/LayoutController.java b/backend-spring/src/main/java/com/erp/controller/LayoutController.java
index 9da05232..495ade00 100644
--- a/backend-spring/src/main/java/com/erp/controller/LayoutController.java
+++ b/backend-spring/src/main/java/com/erp/controller/LayoutController.java
@@ -24,9 +24,9 @@ public class LayoutController {
      */
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getLayouts(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(layoutService.getLayouts(params)));
     }
 
@@ -37,7 +37,7 @@ public class LayoutController {
      */
     @GetMapping("/counts-by-category")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getLayoutCountsByCategory(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(
                 layoutService.getLayoutCountsByCategory(companyCode)));
     }
@@ -48,7 +48,7 @@ public class LayoutController {
      */
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getLayoutById(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable("id") String layoutCode) {
         Map<String, Object> layout = layoutService.getLayoutById(layoutCode, companyCode);
         if (layout == null) {
@@ -64,15 +64,15 @@ public class LayoutController {
      */
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createLayout(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
-        if (body.get("layoutName") == null || body.get("layoutType") == null || body.get("category") == null) {
+        if (body.get("layout_name") == null || body.get("layout_type") == null || body.get("category") == null) {
             return ResponseEntity.status(400)
                     .body(ApiResponse.error("필수 필드가 누락되었습니다. (layoutName, layoutType, category)"));
         }
-        if (body.get("layoutConfig") == null || body.get("zonesConfig") == null) {
+        if (body.get("layout_config") == null || body.get("zones_config") == null) {
             return ResponseEntity.status(400)
                     .body(ApiResponse.error("레이아웃 설정과 존 설정은 필수입니다."));
         }
@@ -94,8 +94,8 @@ public class LayoutController {
      */
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateLayout(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable("id") String layoutCode,
             @RequestBody Map<String, Object> body) {
 
@@ -119,8 +119,8 @@ public class LayoutController {
      */
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteLayout(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable("id") String layoutCode) {
 
         try {
@@ -142,12 +142,12 @@ public class LayoutController {
      */
     @PostMapping("/{id}/duplicate")
     public ResponseEntity<ApiResponse<Map<String, Object>>> duplicateLayout(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable("id") String layoutCode,
             @RequestBody Map<String, Object> body) {
 
-        String newName = (String) body.get("newName");
+        String newName = (String) body.get("new_name");
         if (newName == null || newName.isBlank()) {
             return ResponseEntity.status(400)
                     .body(ApiResponse.error("새 레이아웃 이름이 필요합니다."));
diff --git a/backend-spring/src/main/java/com/erp/controller/MailAccountFileController.java b/backend-spring/src/main/java/com/erp/controller/MailAccountFileController.java
index 503a2a75..0e7ff582 100644
--- a/backend-spring/src/main/java/com/erp/controller/MailAccountFileController.java
+++ b/backend-spring/src/main/java/com/erp/controller/MailAccountFileController.java
@@ -17,46 +17,46 @@ public class MailAccountFileController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMailAccountFileList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(mailAccountFileService.getMailAccountFileList(params)));
     }
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMailAccountFileInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(mailAccountFileService.getMailAccountFileInfo(params)));
     }
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertMailAccountFile(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(mailAccountFileService.insertMailAccountFile(body)));
     }
 
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateMailAccountFile(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(mailAccountFileService.updateMailAccountFile(body)));
     }
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteMailAccountFile(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(mailAccountFileService.deleteMailAccountFile(params)));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/MailReceiveBasicController.java b/backend-spring/src/main/java/com/erp/controller/MailReceiveBasicController.java
index d9319963..50dc35e8 100644
--- a/backend-spring/src/main/java/com/erp/controller/MailReceiveBasicController.java
+++ b/backend-spring/src/main/java/com/erp/controller/MailReceiveBasicController.java
@@ -21,9 +21,9 @@ public class MailReceiveBasicController {
     /** GET /today-count → 오늘 수신 메일 수 */
     @GetMapping("/today-count")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMailReceiveBasicTodayCount(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         int count = mailReceiveBasicService.getMailReceiveBasicTodayCount(params);
         Map<String, Object> data = new HashMap<>();
         data.put("count", count);
@@ -33,22 +33,22 @@ public class MailReceiveBasicController {
     /** GET /{accountId}/{seqno}/attachment/{index} → 첨부파일 다운로드 */
     @GetMapping("/{accountId}/{seqno}/attachment/{index}")
     public ResponseEntity<byte[]> downloadMailReceiveBasicAttachment(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long accountId,
             @PathVariable String seqno,
             @PathVariable int index) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("accountId", accountId);
+        params.put("company_code", companyCode);
+        params.put("account_id", accountId);
         params.put("seqno", seqno);
-        params.put("attachIndex", index);
+        params.put("attach_index", index);
         Map<String, Object> attachment = mailReceiveBasicService.getMailReceiveBasicAttachment(params);
         if (attachment == null) {
             return ResponseEntity.notFound().build();
         }
-        byte[] data = (byte[]) attachment.get("contentData");
-        String fileName = (String) attachment.getOrDefault("fileName", "attachment");
-        String contentType = (String) attachment.getOrDefault("contentType", "application/octet-stream");
+        byte[] data = (byte[]) attachment.get("content_data");
+        String fileName = (String) attachment.getOrDefault("file_name", "attachment");
+        String contentType = (String) attachment.getOrDefault("content_type", "application/octet-stream");
         return ResponseEntity.ok()
                 .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + fileName + "\"")
                 .contentType(MediaType.parseMediaType(contentType))
@@ -58,12 +58,12 @@ public class MailReceiveBasicController {
     /** POST /{accountId}/{seqno}/mark-read → 메일 읽음 처리 */
     @PostMapping("/{accountId}/{seqno}/mark-read")
     public ResponseEntity<ApiResponse<Map<String, Object>>> markMailReceiveBasicAsRead(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long accountId,
             @PathVariable String seqno) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("accountId", accountId);
+        params.put("company_code", companyCode);
+        params.put("account_id", accountId);
         params.put("seqno", seqno);
         return ResponseEntity.ok(ApiResponse.success(mailReceiveBasicService.markMailReceiveBasicAsRead(params)));
     }
@@ -71,12 +71,12 @@ public class MailReceiveBasicController {
     /** DELETE /{accountId}/{seqno} → 메일 삭제 */
     @DeleteMapping("/{accountId}/{seqno}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteMailReceiveBasic(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long accountId,
             @PathVariable String seqno) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("accountId", accountId);
+        params.put("company_code", companyCode);
+        params.put("account_id", accountId);
         params.put("seqno", seqno);
         return ResponseEntity.ok(ApiResponse.success(mailReceiveBasicService.deleteMailReceiveBasic(params)));
     }
@@ -84,12 +84,12 @@ public class MailReceiveBasicController {
     /** GET /{accountId}/{seqno} → 메일 상세 조회 */
     @GetMapping("/{accountId}/{seqno}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMailReceiveBasicInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long accountId,
             @PathVariable String seqno) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("accountId", accountId);
+        params.put("company_code", companyCode);
+        params.put("account_id", accountId);
         params.put("seqno", seqno);
         return ResponseEntity.ok(ApiResponse.success(mailReceiveBasicService.getMailReceiveBasicInfo(params)));
     }
@@ -97,22 +97,22 @@ public class MailReceiveBasicController {
     /** POST /{accountId}/test-imap → IMAP 연결 테스트 */
     @PostMapping("/{accountId}/test-imap")
     public ResponseEntity<ApiResponse<Map<String, Object>>> testMailReceiveBasicImapConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long accountId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("accountId", accountId);
+        params.put("company_code", companyCode);
+        params.put("account_id", accountId);
         return ResponseEntity.ok(ApiResponse.success(mailReceiveBasicService.testMailReceiveBasicImapConnection(params)));
     }
 
     /** GET /{accountId} → 메일 목록 조회 */
     @GetMapping("/{accountId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMailReceiveBasicList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long accountId,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
-        params.put("accountId", accountId);
+        params.put("company_code", companyCode);
+        params.put("account_id", accountId);
         return ResponseEntity.ok(ApiResponse.success(mailReceiveBasicService.getMailReceiveBasicList(params)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/MailSendSimpleController.java b/backend-spring/src/main/java/com/erp/controller/MailSendSimpleController.java
index 6d1a797a..8a95bde5 100644
--- a/backend-spring/src/main/java/com/erp/controller/MailSendSimpleController.java
+++ b/backend-spring/src/main/java/com/erp/controller/MailSendSimpleController.java
@@ -32,7 +32,7 @@ public class MailSendSimpleController {
     @PostMapping(value = "/simple",
             consumes = {MediaType.MULTIPART_FORM_DATA_VALUE, MediaType.APPLICATION_FORM_URLENCODED_VALUE})
     public ResponseEntity<ApiResponse<Map<String, Object>>> sendMail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam(required = false) String accountId,
             @RequestParam(required = false) String templateId,
             @RequestParam(required = false) String modifiedTemplateComponents,
@@ -46,17 +46,17 @@ public class MailSendSimpleController {
             @RequestPart(value = "attachments", required = false) List<MultipartFile> attachments) {
 
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode",                companyCode);
-        params.put("accountId",                  accountId);
-        params.put("templateId",                 templateId);
-        params.put("modifiedTemplateComponents", modifiedTemplateComponents);
+        params.put("company_code",                companyCode);
+        params.put("account_id",                  accountId);
+        params.put("template_id",                 templateId);
+        params.put("modified_template_components", modifiedTemplateComponents);
         params.put("to",                         to);
         params.put("cc",                         cc);
         params.put("bcc",                        bcc);
         params.put("subject",                    subject);
         params.put("variables",                  variables);
-        params.put("customHtml",                 customHtml);
-        params.put("fileNames",                  fileNames);
+        params.put("custom_html",                 customHtml);
+        params.put("file_names",                  fileNames);
         params.put("attachments",                attachments);
 
         return ResponseEntity.ok(ApiResponse.success(
@@ -70,10 +70,10 @@ public class MailSendSimpleController {
      */
     @PostMapping("/bulk")
     public ResponseEntity<ApiResponse<Map<String, Object>>> sendBulkMail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         Map<String, Object> result = mailSendSimpleService.sendBulkMail(body);
         int successCount = ((Number) result.getOrDefault("success", 0)).intValue();
         int total        = ((Number) result.getOrDefault("total",   0)).intValue();
@@ -87,10 +87,10 @@ public class MailSendSimpleController {
      */
     @PostMapping("/test-connection")
     public ResponseEntity<ApiResponse<Map<String, Object>>> testConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
                 mailSendSimpleService.testConnection(body)));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/MailSentHistoryController.java b/backend-spring/src/main/java/com/erp/controller/MailSentHistoryController.java
index b6060cde..aa8b5cd9 100644
--- a/backend-spring/src/main/java/com/erp/controller/MailSentHistoryController.java
+++ b/backend-spring/src/main/java/com/erp/controller/MailSentHistoryController.java
@@ -18,27 +18,27 @@ public class MailSentHistoryController {
     // GET /statistics — /{id} 보다 먼저 정의해야 매핑 우선순위 확보
     @GetMapping("/statistics")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMailSentHistoryStatistics(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(mailSentHistoryService.getMailSentHistoryStatistics(params)));
     }
 
     // GET / — 목록 조회 (페이지네이션)
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMailSentHistoryList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(mailSentHistoryService.getMailSentHistoryList(params)));
     }
 
     // POST /draft — 임시 저장
     @PostMapping("/draft")
     public ResponseEntity<ApiResponse<Map<String, Object>>> saveMailSentHistoryDraft(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(
                 mailSentHistoryService.saveMailSentHistoryDraft(body), "임시 저장되었습니다."));
     }
@@ -46,10 +46,10 @@ public class MailSentHistoryController {
     // PUT /draft/{id} — 임시 저장 업데이트
     @PutMapping("/draft/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateMailSentHistoryDraft(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(
                 mailSentHistoryService.updateMailSentHistoryDraft(body), "임시 저장이 업데이트되었습니다."));
@@ -58,37 +58,37 @@ public class MailSentHistoryController {
     // POST /bulk/delete — 일괄 소프트 삭제
     @PostMapping("/bulk/delete")
     public ResponseEntity<ApiResponse<Map<String, Object>>> bulkDeleteMailSentHistory(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(mailSentHistoryService.bulkDeleteMailSentHistory(body)));
     }
 
     // POST /bulk/permanent-delete — 일괄 영구 삭제
     @PostMapping("/bulk/permanent-delete")
     public ResponseEntity<ApiResponse<Map<String, Object>>> bulkPermanentDeleteMailSentHistory(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(mailSentHistoryService.bulkPermanentDeleteMailSentHistory(body)));
     }
 
     // POST /bulk/restore — 일괄 복구
     @PostMapping("/bulk/restore")
     public ResponseEntity<ApiResponse<Map<String, Object>>> bulkRestoreMailSentHistory(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(mailSentHistoryService.bulkRestoreMailSentHistory(body)));
     }
 
     // POST /{id}/restore — 메일 복구
     @PostMapping("/{id}/restore")
     public ResponseEntity<ApiResponse<Map<String, Object>>> restoreMailSentHistory(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(
                 mailSentHistoryService.restoreMailSentHistory(params), "메일이 복구되었습니다."));
@@ -97,10 +97,10 @@ public class MailSentHistoryController {
     // DELETE /{id}/permanent — 영구 삭제
     @DeleteMapping("/{id}/permanent")
     public ResponseEntity<ApiResponse<Map<String, Object>>> permanentlyDeleteMailSentHistory(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(
                 mailSentHistoryService.permanentlyDeleteMailSentHistory(params), "메일이 영구 삭제되었습니다."));
@@ -109,10 +109,10 @@ public class MailSentHistoryController {
     // GET /{id} — 단건 조회
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMailSentHistoryInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(mailSentHistoryService.getMailSentHistoryInfo(params)));
     }
@@ -120,10 +120,10 @@ public class MailSentHistoryController {
     // DELETE /{id} — 소프트 삭제
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteMailSentHistory(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(
                 mailSentHistoryService.deleteMailSentHistory(params), "발송 이력이 삭제되었습니다."));
diff --git a/backend-spring/src/main/java/com/erp/controller/MailTemplateFileController.java b/backend-spring/src/main/java/com/erp/controller/MailTemplateFileController.java
index a86c85f3..2e800d25 100644
--- a/backend-spring/src/main/java/com/erp/controller/MailTemplateFileController.java
+++ b/backend-spring/src/main/java/com/erp/controller/MailTemplateFileController.java
@@ -18,28 +18,28 @@ public class MailTemplateFileController {
     /** GET /list → 템플릿 목록 조회 (alias) */
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMailTemplateFileListAlias(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(mailTemplateFileService.getMailTemplateFileList(params)));
     }
 
     /** GET / → 템플릿 목록 조회 */
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMailTemplateFileList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(mailTemplateFileService.getMailTemplateFileList(params)));
     }
 
     /** GET /{id} → 템플릿 상세 조회 */
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMailTemplateFileInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(mailTemplateFileService.getMailTemplateFileInfo(params)));
     }
@@ -47,19 +47,19 @@ public class MailTemplateFileController {
     /** POST / → 템플릿 생성 */
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertMailTemplateFile(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(mailTemplateFileService.insertMailTemplateFile(body)));
     }
 
     /** PUT /{id} → 템플릿 수정 */
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateMailTemplateFile(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(mailTemplateFileService.updateMailTemplateFile(body)));
     }
@@ -67,10 +67,10 @@ public class MailTemplateFileController {
     /** DELETE /{id} → 템플릿 삭제 */
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteMailTemplateFile(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(mailTemplateFileService.deleteMailTemplateFile(params)));
     }
@@ -78,10 +78,10 @@ public class MailTemplateFileController {
     /** POST /{id}/preview → 템플릿 HTML 미리보기 */
     @PostMapping("/{id}/preview")
     public ResponseEntity<ApiResponse<Map<String, Object>>> previewMailTemplateFile(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         Map<String, Object> result = mailTemplateFileService.previewMailTemplateFile(body);
         if (result.isEmpty()) {
@@ -93,7 +93,7 @@ public class MailTemplateFileController {
     /** POST /{id}/preview-with-query → 쿼리 연동 미리보기 (미지원) */
     @PostMapping("/{id}/preview-with-query")
     public ResponseEntity<ApiResponse<Map<String, Object>>> previewMailTemplateFileWithQuery(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         return ResponseEntity.status(501).body(ApiResponse.error("SQL 쿼리 연동 기능은 현재 지원하지 않습니다."));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/MapDataController.java b/backend-spring/src/main/java/com/erp/controller/MapDataController.java
index b97d519f..66c03b3b 100644
--- a/backend-spring/src/main/java/com/erp/controller/MapDataController.java
+++ b/backend-spring/src/main/java/com/erp/controller/MapDataController.java
@@ -25,13 +25,13 @@ public class MapDataController {
      */
     @GetMapping("/external/{connectionId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getExternalMapData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long connectionId,
             @RequestParam Map<String, Object> params) {
 
-        String tableName = (String) params.get("tableName");
-        String latColumn = (String) params.get("latColumn");
-        String lngColumn = (String) params.get("lngColumn");
+        String tableName = (String) params.get("table_name");
+        String latColumn = (String) params.get("lat_column");
+        String lngColumn = (String) params.get("lng_column");
 
         if (tableName == null || tableName.isBlank()
                 || latColumn == null || latColumn.isBlank()
@@ -52,12 +52,12 @@ public class MapDataController {
      */
     @GetMapping("/internal")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getInternalMapData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
 
-        String tableName = (String) params.get("tableName");
-        String latColumn = (String) params.get("latColumn");
-        String lngColumn = (String) params.get("lngColumn");
+        String tableName = (String) params.get("table_name");
+        String latColumn = (String) params.get("lat_column");
+        String lngColumn = (String) params.get("lng_column");
 
         if (tableName == null || tableName.isBlank()
                 || latColumn == null || latColumn.isBlank()
diff --git a/backend-spring/src/main/java/com/erp/controller/MoldController.java b/backend-spring/src/main/java/com/erp/controller/MoldController.java
index 08d6f604..f6890c47 100644
--- a/backend-spring/src/main/java/com/erp/controller/MoldController.java
+++ b/backend-spring/src/main/java/com/erp/controller/MoldController.java
@@ -20,27 +20,27 @@ public class MoldController {
 
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMoldList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(moldService.getMoldList(params)));
     }
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMoldListAlias(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(moldService.getMoldList(params)));
     }
 
     @GetMapping("/{moldCode}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMoldDetail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String moldCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("moldCode", moldCode);
+        params.put("company_code", companyCode);
+        params.put("mold_code", moldCode);
         Map<String, Object> result = moldService.getMoldInfo(params);
         if (result == null) return ResponseEntity.status(404).body(ApiResponse.error("금형을 찾을 수 없습니다."));
         return ResponseEntity.ok(ApiResponse.success(result));
@@ -48,12 +48,12 @@ public class MoldController {
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createMold(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("writer", userId);
-        if (body.get("moldCode") == null || body.get("moldName") == null) {
+        if (body.get("mold_code") == null || body.get("mold_name") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("금형코드와 금형명은 필수입니다."));
         }
         try {
@@ -68,11 +68,11 @@ public class MoldController {
 
     @PutMapping("/{moldCode}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateMold(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String moldCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("moldCode", moldCode);
+        body.put("company_code", companyCode);
+        body.put("mold_code", moldCode);
         Map<String, Object> result = moldService.updateMold(body);
         if (result == null) return ResponseEntity.status(404).body(ApiResponse.error("금형을 찾을 수 없습니다."));
         return ResponseEntity.ok(ApiResponse.success(result, "금형이 수정되었습니다."));
@@ -80,11 +80,11 @@ public class MoldController {
 
     @DeleteMapping("/{moldCode}")
     public ResponseEntity<ApiResponse<Void>> deleteMold(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String moldCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("moldCode", moldCode);
+        params.put("company_code", companyCode);
+        params.put("mold_code", moldCode);
         if (!moldService.deleteMold(params)) {
             return ResponseEntity.status(404).body(ApiResponse.error("금형을 찾을 수 없습니다."));
         }
@@ -95,22 +95,22 @@ public class MoldController {
 
     @GetMapping("/{moldCode}/serials")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getMoldSerials(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String moldCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("moldCode", moldCode);
+        params.put("company_code", companyCode);
+        params.put("mold_code", moldCode);
         return ResponseEntity.ok(ApiResponse.success(moldService.getMoldSerialList(params)));
     }
 
     @PostMapping("/{moldCode}/serials")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createMoldSerial(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable String moldCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("moldCode", moldCode);
+        body.put("company_code", companyCode);
+        body.put("mold_code", moldCode);
         body.put("writer", userId);
         try {
             return ResponseEntity.ok(ApiResponse.success(moldService.insertMoldSerial(body), "일련번호가 등록되었습니다."));
@@ -124,10 +124,10 @@ public class MoldController {
 
     @DeleteMapping("/serials/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteMoldSerial(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         if (!moldService.deleteMoldSerial(params)) {
             return ResponseEntity.status(404).body(ApiResponse.error("일련번호를 찾을 수 없습니다."));
@@ -137,11 +137,11 @@ public class MoldController {
 
     @GetMapping("/{moldCode}/serial-summary")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMoldSerialSummary(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String moldCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("moldCode", moldCode);
+        params.put("company_code", companyCode);
+        params.put("mold_code", moldCode);
         return ResponseEntity.ok(ApiResponse.success(moldService.getMoldSerialSummary(params)));
     }
 
@@ -149,24 +149,24 @@ public class MoldController {
 
     @GetMapping("/{moldCode}/inspections")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getMoldInspections(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String moldCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("moldCode", moldCode);
+        params.put("company_code", companyCode);
+        params.put("mold_code", moldCode);
         return ResponseEntity.ok(ApiResponse.success(moldService.getMoldInspectionList(params)));
     }
 
     @PostMapping("/{moldCode}/inspections")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createMoldInspection(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable String moldCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("moldCode", moldCode);
+        body.put("company_code", companyCode);
+        body.put("mold_code", moldCode);
         body.put("writer", userId);
-        if (body.get("inspectionItem") == null) {
+        if (body.get("inspection_item") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("점검항목명은 필수입니다."));
         }
         return ResponseEntity.ok(ApiResponse.success(moldService.insertMoldInspection(body), "점검항목이 등록되었습니다."));
@@ -174,10 +174,10 @@ public class MoldController {
 
     @DeleteMapping("/inspections/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteMoldInspection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         if (!moldService.deleteMoldInspection(params)) {
             return ResponseEntity.status(404).body(ApiResponse.error("점검항목을 찾을 수 없습니다."));
@@ -189,24 +189,24 @@ public class MoldController {
 
     @GetMapping("/{moldCode}/parts")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getMoldParts(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String moldCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("moldCode", moldCode);
+        params.put("company_code", companyCode);
+        params.put("mold_code", moldCode);
         return ResponseEntity.ok(ApiResponse.success(moldService.getMoldPartList(params)));
     }
 
     @PostMapping("/{moldCode}/parts")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createMoldPart(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable String moldCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("moldCode", moldCode);
+        body.put("company_code", companyCode);
+        body.put("mold_code", moldCode);
         body.put("writer", userId);
-        if (body.get("partName") == null) {
+        if (body.get("part_name") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("부품명은 필수입니다."));
         }
         return ResponseEntity.ok(ApiResponse.success(moldService.insertMoldPart(body), "부품이 등록되었습니다."));
@@ -214,10 +214,10 @@ public class MoldController {
 
     @DeleteMapping("/parts/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteMoldPart(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         if (!moldService.deleteMoldPart(params)) {
             return ResponseEntity.status(404).body(ApiResponse.error("부품을 찾을 수 없습니다."));
diff --git a/backend-spring/src/main/java/com/erp/controller/MultiConnectionController.java b/backend-spring/src/main/java/com/erp/controller/MultiConnectionController.java
index a7688362..a65717b5 100644
--- a/backend-spring/src/main/java/com/erp/controller/MultiConnectionController.java
+++ b/backend-spring/src/main/java/com/erp/controller/MultiConnectionController.java
@@ -21,7 +21,7 @@ public class MultiConnectionController {
     /** GET /connections/:connectionId/tables */
     @GetMapping("/connections/{connectionId}/tables")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTablesFromConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int connectionId) {
         List<Map<String, Object>> tables = multiConnectionService.getTablesFromConnection(connectionId);
         return ResponseEntity.ok(ApiResponse.success(tables,
@@ -31,7 +31,7 @@ public class MultiConnectionController {
     /** GET /connections/:connectionId/tables/batch */
     @GetMapping("/connections/{connectionId}/tables/batch")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getBatchTablesWithColumns(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int connectionId) {
         List<Map<String, Object>> tables = multiConnectionService.getBatchTablesWithColumns(connectionId);
         return ResponseEntity.ok(ApiResponse.success(tables,
@@ -41,7 +41,7 @@ public class MultiConnectionController {
     /** GET /connections/:connectionId/tables/:tableName/columns */
     @GetMapping("/connections/{connectionId}/tables/{tableName}/columns")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getColumnsFromConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int connectionId,
             @PathVariable String tableName) {
         if (tableName == null || tableName.isBlank()) {
@@ -55,10 +55,10 @@ public class MultiConnectionController {
     /** POST /connections/:connectionId/query */
     @PostMapping("/connections/{connectionId}/query")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> fetchDataFromConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int connectionId,
             @RequestBody Map<String, Object> body) {
-        if (body.get("tableName") == null) {
+        if (body.get("table_name") == null) {
             return ResponseEntity.badRequest().body(ApiResponse.error("테이블명이 입력되지 않았습니다."));
         }
         List<Map<String, Object>> data = multiConnectionService.fetchDataFromConnection(connectionId, body);
@@ -69,10 +69,10 @@ public class MultiConnectionController {
     /** POST /connections/:connectionId/insert */
     @PostMapping("/connections/{connectionId}/insert")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertDataToConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int connectionId,
             @RequestBody Map<String, Object> body) {
-        if (body.get("tableName") == null || body.get("data") == null) {
+        if (body.get("table_name") == null || body.get("data") == null) {
             return ResponseEntity.badRequest().body(ApiResponse.error("테이블명과 데이터가 필요합니다."));
         }
         Map<String, Object> result = multiConnectionService.insertDataToConnection(connectionId, body);
@@ -82,10 +82,10 @@ public class MultiConnectionController {
     /** PUT /connections/:connectionId/update */
     @PutMapping("/connections/{connectionId}/update")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> updateDataToConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int connectionId,
             @RequestBody Map<String, Object> body) {
-        if (body.get("tableName") == null || body.get("data") == null || body.get("conditions") == null) {
+        if (body.get("table_name") == null || body.get("data") == null || body.get("conditions") == null) {
             return ResponseEntity.badRequest().body(ApiResponse.error("테이블명, 데이터, 조건이 모두 필요합니다."));
         }
         List<Map<String, Object>> result = multiConnectionService.updateDataToConnection(connectionId, body);
@@ -96,10 +96,10 @@ public class MultiConnectionController {
     /** DELETE /connections/:connectionId/delete */
     @DeleteMapping("/connections/{connectionId}/delete")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> deleteDataFromConnection(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int connectionId,
             @RequestBody Map<String, Object> body) {
-        if (body.get("tableName") == null || body.get("conditions") == null) {
+        if (body.get("table_name") == null || body.get("conditions") == null) {
             return ResponseEntity.badRequest().body(ApiResponse.error("테이블명과 삭제 조건이 필요합니다."));
         }
         List<Map<String, Object>> result = multiConnectionService.deleteDataFromConnection(connectionId, body);
@@ -110,9 +110,9 @@ public class MultiConnectionController {
     /** POST /validate-self-operation */
     @PostMapping("/validate-self-operation")
     public ResponseEntity<ApiResponse<Map<String, Object>>> validateSelfOperation(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        if (body.get("tableName") == null || body.get("operation") == null || body.get("conditions") == null) {
+        if (body.get("table_name") == null || body.get("operation") == null || body.get("conditions") == null) {
             return ResponseEntity.badRequest().body(ApiResponse.error("테이블명, 작업 타입, 조건이 모두 필요합니다."));
         }
         String op = body.get("operation").toString();
diff --git a/backend-spring/src/main/java/com/erp/controller/MultilangController.java b/backend-spring/src/main/java/com/erp/controller/MultilangController.java
index 51da1f06..6fd83a54 100644
--- a/backend-spring/src/main/java/com/erp/controller/MultilangController.java
+++ b/backend-spring/src/main/java/com/erp/controller/MultilangController.java
@@ -28,12 +28,12 @@ public class MultilangController {
             @RequestParam(required = false) String menuCode,
             @RequestParam(required = false) String userLang) {
 
-        String finalCompanyCode = companyCode != null ? companyCode : str(body.get("companyCode"));
-        String finalMenuCode = menuCode != null ? menuCode : str(body.get("menuCode"));
-        String finalUserLang = userLang != null ? userLang : str(body.get("userLang"));
+        String finalCompanyCode = companyCode != null ? companyCode : str(body.get("company_code"));
+        String finalMenuCode = menuCode != null ? menuCode : str(body.get("menu_code"));
+        String finalUserLang = userLang != null ? userLang : str(body.get("user_lang"));
 
         @SuppressWarnings("unchecked")
-        List<String> langKeys = (List<String>) body.get("langKeys");
+        List<String> langKeys = (List<String>) body.get("lang_keys");
 
         if (langKeys == null || langKeys.isEmpty()) {
             return ResponseEntity.badRequest().body(ApiResponse.error("langKeys 배열이 필요합니다."));
@@ -59,21 +59,21 @@ public class MultilangController {
 
     @PostMapping("/languages")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createLanguage(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
-        String langCode = str(body.get("langCode"));
-        String langName = str(body.get("langName"));
-        String langNative = str(body.get("langNative"));
+        String langCode = str(body.get("lang_code"));
+        String langName = str(body.get("lang_name"));
+        String langNative = str(body.get("lang_native"));
 
         if (langCode.isEmpty() || langName.isEmpty() || langNative.isEmpty()) {
             return ResponseEntity.badRequest()
                     .body(ApiResponse.error("언어 코드, 언어명, 원어명은 필수입니다."));
         }
 
-        String userId = str(body.getOrDefault("createdBy", "system"));
-        body.put("createdBy", userId);
-        body.put("updatedBy", userId);
+        String userId = str(body.getOrDefault("created_by", "system"));
+        body.put("created_by", userId);
+        body.put("updated_by", userId);
         Map<String, Object> created = multilangService.createLanguage(body);
         return ResponseEntity.status(201)
                 .body(ApiResponse.success(created, "언어가 성공적으로 생성되었습니다."));
@@ -81,19 +81,19 @@ public class MultilangController {
 
     @PutMapping("/languages/{langCode}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateLanguage(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String langCode,
             @RequestBody Map<String, Object> body) {
 
-        String userId = str(body.getOrDefault("updatedBy", "system"));
-        body.put("updatedBy", userId);
+        String userId = str(body.getOrDefault("updated_by", "system"));
+        body.put("updated_by", userId);
         Map<String, Object> updated = multilangService.updateLanguage(langCode, body);
         return ResponseEntity.ok(ApiResponse.success(updated, "언어가 성공적으로 수정되었습니다."));
     }
 
     @DeleteMapping("/languages/{langCode}")
     public ResponseEntity<ApiResponse<String>> deleteLanguage(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String langCode) {
 
         multilangService.deleteLanguage(langCode);
@@ -102,7 +102,7 @@ public class MultilangController {
 
     @PutMapping("/languages/{langCode}/toggle")
     public ResponseEntity<ApiResponse<String>> toggleLanguage(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String langCode) {
 
         String result = multilangService.toggleLanguage(langCode);
@@ -115,7 +115,7 @@ public class MultilangController {
 
     @GetMapping("/keys")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getLangKeys(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
 
         List<Map<String, Object>> keys = multilangService.getLangKeys(new HashMap<>(params));
@@ -124,7 +124,7 @@ public class MultilangController {
 
     @GetMapping("/keys/{keyId}/texts")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getLangTexts(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int keyId) {
 
         return ResponseEntity.ok(ApiResponse.success(
@@ -133,17 +133,17 @@ public class MultilangController {
 
     @PostMapping("/keys")
     public ResponseEntity<ApiResponse<Integer>> createLangKey(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
-        if (str(body.get("companyCode")).isEmpty() || str(body.get("langKey")).isEmpty()) {
+        if (str(body.get("company_code")).isEmpty() || str(body.get("lang_key")).isEmpty()) {
             return ResponseEntity.badRequest()
                     .body(ApiResponse.error("회사 코드와 언어 키는 필수입니다."));
         }
 
-        String userId = str(body.getOrDefault("createdBy", "system"));
-        body.put("createdBy", userId);
-        body.put("updatedBy", userId);
+        String userId = str(body.getOrDefault("created_by", "system"));
+        body.put("created_by", userId);
+        body.put("updated_by", userId);
         int keyId = multilangService.createLangKey(body);
         return ResponseEntity.status(201)
                 .body(ApiResponse.success(keyId, "다국어 키가 성공적으로 생성되었습니다."));
@@ -151,19 +151,19 @@ public class MultilangController {
 
     @PutMapping("/keys/{keyId}")
     public ResponseEntity<ApiResponse<String>> updateLangKey(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int keyId,
             @RequestBody Map<String, Object> body) {
 
-        String userId = str(body.getOrDefault("updatedBy", "system"));
-        body.put("updatedBy", userId);
+        String userId = str(body.getOrDefault("updated_by", "system"));
+        body.put("updated_by", userId);
         multilangService.updateLangKey(keyId, body);
         return ResponseEntity.ok(ApiResponse.success("수정 완료", "다국어 키가 성공적으로 수정되었습니다."));
     }
 
     @DeleteMapping("/keys/{keyId}")
     public ResponseEntity<ApiResponse<String>> deleteLangKey(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int keyId) {
 
         multilangService.deleteLangKey(keyId);
@@ -172,7 +172,7 @@ public class MultilangController {
 
     @PutMapping("/keys/{keyId}/toggle")
     public ResponseEntity<ApiResponse<String>> toggleLangKey(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int keyId) {
 
         String result = multilangService.toggleLangKey(keyId);
@@ -185,7 +185,7 @@ public class MultilangController {
 
     @PostMapping("/keys/{keyId}/texts")
     public ResponseEntity<ApiResponse<String>> saveLangTexts(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int keyId,
             @RequestBody Map<String, Object> body) {
 
@@ -195,10 +195,10 @@ public class MultilangController {
             return ResponseEntity.badRequest().body(ApiResponse.error("텍스트 데이터는 필수입니다."));
         }
 
-        String userId = str(body.getOrDefault("updatedBy", "system"));
+        String userId = str(body.getOrDefault("updated_by", "system"));
         for (Map<String, Object> t : texts) {
-            if (t.get("createdBy") == null) t.put("createdBy", userId);
-            if (t.get("updatedBy") == null) t.put("updatedBy", userId);
+            if (t.get("created_by") == null) t.put("created_by", userId);
+            if (t.get("updated_by") == null) t.put("updated_by", userId);
         }
         multilangService.saveLangTexts(keyId, texts);
         return ResponseEntity.ok(ApiResponse.success("저장 완료", "다국어 텍스트가 성공적으로 저장되었습니다."));
@@ -234,7 +234,7 @@ public class MultilangController {
 
     @GetMapping("/categories")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCategories(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         return ResponseEntity.ok(ApiResponse.success(
                 multilangService.getCategories(), "카테고리 목록 조회 성공"));
@@ -242,7 +242,7 @@ public class MultilangController {
 
     @GetMapping("/categories/{categoryId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCategoryById(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int categoryId) {
 
         Map<String, Object> category = multilangService.getCategoryById(categoryId);
@@ -254,7 +254,7 @@ public class MultilangController {
 
     @GetMapping("/categories/{categoryId}/path")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCategoryPath(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int categoryId) {
 
         return ResponseEntity.ok(ApiResponse.success(
@@ -267,12 +267,12 @@ public class MultilangController {
 
     @PostMapping("/keys/generate")
     public ResponseEntity<ApiResponse<Integer>> generateKey(
-            @RequestAttribute("companyCode") String requestCompanyCode,
+            @RequestAttribute("company_code") String requestCompanyCode,
             @RequestBody Map<String, Object> body) {
 
-        String targetCompanyCode = str(body.get("companyCode"));
-        if (targetCompanyCode.isEmpty() || str(body.get("categoryId")).isEmpty()
-                || str(body.get("keyMeaning")).isEmpty()) {
+        String targetCompanyCode = str(body.get("company_code"));
+        if (targetCompanyCode.isEmpty() || str(body.get("category_id")).isEmpty()
+                || str(body.get("key_meaning")).isEmpty()) {
             return ResponseEntity.badRequest()
                     .body(ApiResponse.error("회사 코드, 카테고리 ID, 키 의미는 필수입니다."));
         }
@@ -286,7 +286,7 @@ public class MultilangController {
                     .body(ApiResponse.error("다른 회사의 키를 생성할 권한이 없습니다."));
         }
 
-        body.put("createdBy", body.getOrDefault("createdBy", "system"));
+        body.put("created_by", body.getOrDefault("created_by", "system"));
         int keyId = multilangService.generateKey(body);
         return ResponseEntity.status(201)
                 .body(ApiResponse.success(keyId, "키가 성공적으로 생성되었습니다."));
@@ -294,12 +294,12 @@ public class MultilangController {
 
     @PostMapping("/keys/preview")
     public ResponseEntity<ApiResponse<Map<String, Object>>> previewKey(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
 
-        Object categoryIdObj = body.get("categoryId");
-        String keyMeaning = str(body.get("keyMeaning"));
-        String targetCompanyCode = str(body.get("companyCode"));
+        Object categoryIdObj = body.get("category_id");
+        String keyMeaning = str(body.get("key_meaning"));
+        String targetCompanyCode = str(body.get("company_code"));
 
         if (categoryIdObj == null || keyMeaning.isEmpty() || targetCompanyCode.isEmpty()) {
             return ResponseEntity.badRequest()
@@ -313,11 +313,11 @@ public class MultilangController {
 
     @PostMapping("/keys/override")
     public ResponseEntity<ApiResponse<Integer>> createOverrideKey(
-            @RequestAttribute("companyCode") String requestCompanyCode,
+            @RequestAttribute("company_code") String requestCompanyCode,
             @RequestBody Map<String, Object> body) {
 
-        String targetCompanyCode = str(body.get("companyCode"));
-        if (targetCompanyCode.isEmpty() || body.get("baseKeyId") == null) {
+        String targetCompanyCode = str(body.get("company_code"));
+        if (targetCompanyCode.isEmpty() || body.get("base_key_id") == null) {
             return ResponseEntity.badRequest()
                     .body(ApiResponse.error("회사 코드와 원본 키 ID는 필수입니다."));
         }
@@ -330,7 +330,7 @@ public class MultilangController {
                     .body(ApiResponse.error("다른 회사의 오버라이드 키를 생성할 권한이 없습니다."));
         }
 
-        body.put("createdBy", body.getOrDefault("createdBy", "system"));
+        body.put("created_by", body.getOrDefault("created_by", "system"));
         int keyId = multilangService.createOverrideKey(body);
         return ResponseEntity.status(201)
                 .body(ApiResponse.success(keyId, "오버라이드 키가 성공적으로 생성되었습니다."));
@@ -338,7 +338,7 @@ public class MultilangController {
 
     @GetMapping("/keys/overrides/{companyCode}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getOverrideKeys(
-            @RequestAttribute("companyCode") String requestCompanyCode,
+            @RequestAttribute("company_code") String requestCompanyCode,
             @PathVariable String companyCode) {
 
         if (!"*".equals(requestCompanyCode) && !companyCode.equals(requestCompanyCode)) {
@@ -355,10 +355,10 @@ public class MultilangController {
 
     @PostMapping("/screen-labels")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> generateScreenLabelKeys(
-            @RequestAttribute("companyCode") String requestCompanyCode,
+            @RequestAttribute("company_code") String requestCompanyCode,
             @RequestBody Map<String, Object> body) {
 
-        Object screenIdObj = body.get("screenId");
+        Object screenIdObj = body.get("screen_id");
         @SuppressWarnings("unchecked")
         List<Map<String, Object>> labels = (List<Map<String, Object>>) body.get("labels");
 
@@ -370,14 +370,14 @@ public class MultilangController {
         }
 
         // companyCode, companyName이 body에 없으면 requestCompanyCode 사용
-        if (!body.containsKey("companyCode") || str(body.get("companyCode")).isEmpty()) {
-            body.put("companyCode", requestCompanyCode);
+        if (!body.containsKey("company_code") || str(body.get("company_code")).isEmpty()) {
+            body.put("company_code", requestCompanyCode);
         }
-        if (!body.containsKey("companyName") || str(body.get("companyName")).isEmpty()) {
-            body.put("companyName", requestCompanyCode);
+        if (!body.containsKey("company_name") || str(body.get("company_name")).isEmpty()) {
+            body.put("company_name", requestCompanyCode);
         }
 
-        body.put("screenId", toInt(screenIdObj));
+        body.put("screen_id", toInt(screenIdObj));
         List<Map<String, Object>> results = multilangService.generateScreenLabelKeys(body);
         return ResponseEntity.ok(ApiResponse.success(
                 results, results.size() + "개의 다국어 키가 생성되었습니다."));
diff --git a/backend-spring/src/main/java/com/erp/controller/NodeExternalConnectionController.java b/backend-spring/src/main/java/com/erp/controller/NodeExternalConnectionController.java
index 112bac5c..a00d2049 100644
--- a/backend-spring/src/main/java/com/erp/controller/NodeExternalConnectionController.java
+++ b/backend-spring/src/main/java/com/erp/controller/NodeExternalConnectionController.java
@@ -34,7 +34,7 @@ public class NodeExternalConnectionController {
 
     @GetMapping("/tested")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTestedConnections(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             log.info("노드 플로우용 테스트 완료된 커넥션 조회 요청 - companyCode: {}", companyCode);
             List<Map<String, Object>> valid = service.getTestedConnections(companyCode);
@@ -54,7 +54,7 @@ public class NodeExternalConnectionController {
 
     @GetMapping("/{id}/tables")
     public ResponseEntity<?> getTables(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int id) {
         try {
             log.info("외부 DB 테이블 목록 조회: connectionId={}", id);
@@ -79,7 +79,7 @@ public class NodeExternalConnectionController {
 
     @GetMapping("/{id}/tables/{tableName}/columns")
     public ResponseEntity<?> getTableColumns(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable int id,
             @PathVariable String tableName) {
         try {
diff --git a/backend-spring/src/main/java/com/erp/controller/NodeFlowController.java b/backend-spring/src/main/java/com/erp/controller/NodeFlowController.java
index 19a0d6bf..b4b7beb1 100644
--- a/backend-spring/src/main/java/com/erp/controller/NodeFlowController.java
+++ b/backend-spring/src/main/java/com/erp/controller/NodeFlowController.java
@@ -30,7 +30,7 @@ public class NodeFlowController {
     /** GET / */
     @GetMapping
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getFlowList(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             return ResponseEntity.ok(ApiResponse.success(service.getFlowList(companyCode)));
         } catch (Exception e) {
@@ -47,7 +47,7 @@ public class NodeFlowController {
     @GetMapping("/{flowId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getFlowById(
             @PathVariable int flowId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> flow = service.getFlowById(flowId, companyCode);
             if (flow == null) {
@@ -67,14 +67,14 @@ public class NodeFlowController {
     /** POST / */
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createFlow(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId")      String userId,
-            @RequestAttribute("userName")    String userName,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id")      String userId,
+            @RequestAttribute("user_name")    String userName,
             @RequestBody Map<String, Object> body) {
         try {
-            body.put("companyCode", companyCode);
-            body.put("userId",      userId);
-            body.put("userName",    userName);
+            body.put("company_code", companyCode);
+            body.put("user_id",      userId);
+            body.put("user_name",    userName);
             return ResponseEntity.ok(ApiResponse.success(service.createFlow(body)));
         } catch (IllegalArgumentException e) {
             return ResponseEntity.status(400).body(ApiResponse.error(e.getMessage()));
@@ -91,14 +91,14 @@ public class NodeFlowController {
     /** PUT / (flowId는 body에 포함) */
     @PutMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateFlow(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId")      String userId,
-            @RequestAttribute("userName")    String userName,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id")      String userId,
+            @RequestAttribute("user_name")    String userName,
             @RequestBody Map<String, Object> body) {
         try {
-            body.put("companyCode", companyCode);
-            body.put("userId",      userId);
-            body.put("userName",    userName);
+            body.put("company_code", companyCode);
+            body.put("user_id",      userId);
+            body.put("user_name",    userName);
             return ResponseEntity.ok(ApiResponse.success(service.updateFlow(body)));
         } catch (IllegalArgumentException e) {
             return ResponseEntity.status(400).body(ApiResponse.error(e.getMessage()));
@@ -116,9 +116,9 @@ public class NodeFlowController {
     @DeleteMapping("/{flowId}")
     public ResponseEntity<ApiResponse<Void>> deleteFlow(
             @PathVariable int flowId,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId")      String userId,
-            @RequestAttribute("userName")    String userName) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id")      String userId,
+            @RequestAttribute("user_name")    String userName) {
         try {
             service.deleteFlow(flowId, companyCode, userId, userName);
             return ResponseEntity.ok(ApiResponse.success(null, "플로우가 삭제되었습니다."));
@@ -158,15 +158,15 @@ public class NodeFlowController {
     @PostMapping("/{flowId}/execute")
     public ResponseEntity<ApiResponse<Map<String, Object>>> executeFlow(
             @PathVariable int flowId,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId")      String userId,
-            @RequestAttribute("userName")    String userName,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id")      String userId,
+            @RequestAttribute("user_name")    String userName,
             @RequestBody(required = false) Map<String, Object> body) {
         try {
             Map<String, Object> contextData = body != null ? body : new java.util.LinkedHashMap<>();
-            contextData.put("companyCode", companyCode);
-            contextData.put("userId",      userId);
-            contextData.put("userName",    userName);
+            contextData.put("company_code", companyCode);
+            contextData.put("user_id",      userId);
+            contextData.put("user_name",    userName);
 
             Map<String, Object> result = service.executeFlow(flowId, contextData);
             return ResponseEntity.ok(ApiResponse.success(result));
diff --git a/backend-spring/src/main/java/com/erp/controller/NumberingRuleController.java b/backend-spring/src/main/java/com/erp/controller/NumberingRuleController.java
index 2a136757..dfd484b1 100644
--- a/backend-spring/src/main/java/com/erp/controller/NumberingRuleController.java
+++ b/backend-spring/src/main/java/com/erp/controller/NumberingRuleController.java
@@ -25,7 +25,7 @@ public class NumberingRuleController {
     /** GET / → 회사별 채번 규칙 전체 목록 */
     @GetMapping
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getRuleList(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         List<Map<String, Object>> list = numberingRuleService.getRuleList(companyCode);
         return ResponseEntity.ok(ApiResponse.success(list, "채번 규칙 목록을 조회했습니다."));
     }
@@ -33,7 +33,7 @@ public class NumberingRuleController {
     /** GET /available → 메뉴 기반 사용 가능 규칙 (menuObjid 없음) */
     @GetMapping("/available")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getAvailableRulesForMenu(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         List<Map<String, Object>> list = numberingRuleService.getAvailableRulesForMenu(companyCode, null);
         return ResponseEntity.ok(ApiResponse.success(list, "사용 가능한 채번 규칙을 조회했습니다."));
     }
@@ -41,7 +41,7 @@ public class NumberingRuleController {
     /** GET /available/{menuObjid} → 메뉴 기반 사용 가능 규칙 */
     @GetMapping("/available/{menuObjid}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getAvailableRulesForMenuWithId(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer menuObjid) {
         List<Map<String, Object>> list = numberingRuleService.getAvailableRulesForMenu(companyCode, menuObjid);
         return ResponseEntity.ok(ApiResponse.success(list, "사용 가능한 채번 규칙을 조회했습니다."));
@@ -50,7 +50,7 @@ public class NumberingRuleController {
     /** GET /available-for-screen?tableName= → 화면 기반 사용 가능 규칙 */
     @GetMapping("/available-for-screen")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getAvailableRulesForScreen(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam(required = false) String tableName) {
         List<Map<String, Object>> list = numberingRuleService.getAvailableRulesForScreen(companyCode, tableName);
         return ResponseEntity.ok(ApiResponse.success(list, "화면별 채번 규칙을 조회했습니다."));
@@ -59,7 +59,7 @@ public class NumberingRuleController {
     /** GET /by-column/{tableName}/{columnName} → 테이블+컬럼 기반 규칙 조회 */
     @GetMapping("/by-column/{tableName}/{columnName}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getNumberingRuleByColumn(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @PathVariable String columnName) {
         Map<String, Object> rule = numberingRuleService.getNumberingRuleByColumn(
@@ -77,7 +77,7 @@ public class NumberingRuleController {
     /** GET /test/list → 테스트용 규칙 목록 */
     @GetMapping("/test/list")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getRulesFromTest(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         List<Map<String, Object>> list = numberingRuleService.getRulesFromTest(companyCode, null);
         return ResponseEntity.ok(ApiResponse.success(list, "테스트 채번 규칙 목록을 조회했습니다."));
     }
@@ -85,7 +85,7 @@ public class NumberingRuleController {
     /** GET /test/list/{menuObjid} → 테스트용 규칙 목록 (메뉴 필터) */
     @GetMapping("/test/list/{menuObjid}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getRulesFromTestWithMenu(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer menuObjid) {
         List<Map<String, Object>> list = numberingRuleService.getRulesFromTest(companyCode, menuObjid);
         return ResponseEntity.ok(ApiResponse.success(list, "테스트 채번 규칙 목록을 조회했습니다."));
@@ -94,7 +94,7 @@ public class NumberingRuleController {
     /** GET /test/by-column/{tableName}/{columnName} → 테스트 테이블+컬럼 기반 조회 */
     @GetMapping("/test/by-column/{tableName}/{columnName}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTestRuleByColumn(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @PathVariable String columnName) {
         Map<String, Object> rule = numberingRuleService.getNumberingRuleByColumn(
@@ -108,9 +108,9 @@ public class NumberingRuleController {
     /** POST /test/save → UPSERT */
     @PostMapping("/test/save")
     public ResponseEntity<ApiResponse<Map<String, Object>>> saveRuleToTest(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        if (body.get("ruleId") == null || body.get("ruleName") == null) {
+        if (body.get("rule_id") == null || body.get("rule_name") == null) {
             return ResponseEntity.badRequest().body(ApiResponse.error("ruleId와 ruleName이 필요합니다."));
         }
         Map<String, Object> result = numberingRuleService.saveRuleToTest(body, companyCode);
@@ -120,7 +120,7 @@ public class NumberingRuleController {
     /** DELETE /test/{ruleId} → 테스트 규칙 삭제 */
     @DeleteMapping("/test/{ruleId}")
     public ResponseEntity<ApiResponse<Void>> deleteRuleFromTest(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String ruleId) {
         numberingRuleService.deleteRuleFromTest(ruleId, companyCode);
         return ResponseEntity.ok(ApiResponse.success(null, "테스트 채번 규칙이 삭제되었습니다."));
@@ -129,12 +129,12 @@ public class NumberingRuleController {
     /** POST /test/{ruleId}/preview → 테스트 미리보기 */
     @PostMapping("/test/{ruleId}/preview")
     public ResponseEntity<ApiResponse<Map<String, Object>>> previewCodeFromTest(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String ruleId,
             @RequestBody(required = false) Map<String, Object> body) {
         @SuppressWarnings("unchecked")
-        Map<String, Object> formData = body != null ? (Map<String, Object>) body.get("formData") : null;
-        String manualInputValue = body != null ? (String) body.get("manualInputValue") : null;
+        Map<String, Object> formData = body != null ? (Map<String, Object>) body.get("form_data") : null;
+        String manualInputValue = body != null ? (String) body.get("manual_input_value") : null;
         String code = numberingRuleService.previewCode(ruleId, companyCode, formData, manualInputValue);
         return ResponseEntity.ok(ApiResponse.success(Map.of("code", code), "미리보기 생성이 완료되었습니다."));
     }
@@ -146,7 +146,7 @@ public class NumberingRuleController {
     /** GET /{ruleId} → 단건 조회 */
     @GetMapping("/{ruleId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getRuleById(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String ruleId) {
         Map<String, Object> rule = numberingRuleService.getRuleById(ruleId, companyCode);
         if (rule == null) {
@@ -158,13 +158,13 @@ public class NumberingRuleController {
     /** POST / → 규칙 생성 */
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createRule(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
-        if (body.get("ruleId") == null || body.get("ruleName") == null || body.get("parts") == null) {
+        if (body.get("rule_id") == null || body.get("rule_name") == null || body.get("parts") == null) {
             return ResponseEntity.badRequest().body(ApiResponse.error("ruleId, ruleName, parts가 필요합니다."));
         }
-        if (userId != null) body.put("userId", userId);
+        if (userId != null) body.put("user_id", userId);
         Map<String, Object> result = numberingRuleService.createRule(body, companyCode);
         return ResponseEntity.status(201).body(ApiResponse.success(result, "채번 규칙이 생성되었습니다."));
     }
@@ -172,7 +172,7 @@ public class NumberingRuleController {
     /** PUT /{ruleId} → 규칙 수정 */
     @PutMapping("/{ruleId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateRule(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String ruleId,
             @RequestBody Map<String, Object> body) {
         Map<String, Object> result = numberingRuleService.updateRule(ruleId, body, companyCode);
@@ -182,7 +182,7 @@ public class NumberingRuleController {
     /** DELETE /{ruleId} → 규칙 삭제 */
     @DeleteMapping("/{ruleId}")
     public ResponseEntity<ApiResponse<Void>> deleteRule(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String ruleId) {
         numberingRuleService.deleteRule(ruleId, companyCode);
         return ResponseEntity.ok(ApiResponse.success(null, "채번 규칙이 삭제되었습니다."));
@@ -195,12 +195,12 @@ public class NumberingRuleController {
     /** POST /{ruleId}/preview → 미리보기 (순번 증가 없음) */
     @PostMapping("/{ruleId}/preview")
     public ResponseEntity<ApiResponse<Map<String, Object>>> previewCode(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String ruleId,
             @RequestBody(required = false) Map<String, Object> body) {
         @SuppressWarnings("unchecked")
-        Map<String, Object> formData = body != null ? (Map<String, Object>) body.get("formData") : null;
-        String manualInputValue = body != null ? (String) body.get("manualInputValue") : null;
+        Map<String, Object> formData = body != null ? (Map<String, Object>) body.get("form_data") : null;
+        String manualInputValue = body != null ? (String) body.get("manual_input_value") : null;
         String code = numberingRuleService.previewCode(ruleId, companyCode, formData, manualInputValue);
         return ResponseEntity.ok(ApiResponse.success(Map.of("code", code), "미리보기 생성이 완료되었습니다."));
     }
@@ -208,12 +208,12 @@ public class NumberingRuleController {
     /** POST /{ruleId}/allocate → 코드 할당 (순번 증가) */
     @PostMapping("/{ruleId}/allocate")
     public ResponseEntity<ApiResponse<Map<String, Object>>> allocateCode(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String ruleId,
             @RequestBody(required = false) Map<String, Object> body) {
         @SuppressWarnings("unchecked")
-        Map<String, Object> formData = body != null ? (Map<String, Object>) body.get("formData") : null;
-        String userInputCode = body != null ? (String) body.get("userInputCode") : null;
+        Map<String, Object> formData = body != null ? (Map<String, Object>) body.get("form_data") : null;
+        String userInputCode = body != null ? (String) body.get("user_input_code") : null;
         String code = numberingRuleService.allocateCode(ruleId, companyCode, formData, userInputCode);
         return ResponseEntity.ok(ApiResponse.success(Map.of("code", code), "코드 할당이 완료되었습니다."));
     }
@@ -221,7 +221,7 @@ public class NumberingRuleController {
     /** POST /{ruleId}/generate (deprecated) → allocateCode 위임 */
     @PostMapping("/{ruleId}/generate")
     public ResponseEntity<ApiResponse<Map<String, Object>>> generateCode(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String ruleId) {
         String code = numberingRuleService.generateCode(ruleId, companyCode);
         return ResponseEntity.ok(ApiResponse.success(Map.of("code", code), "코드 생성이 완료되었습니다."));
@@ -230,7 +230,7 @@ public class NumberingRuleController {
     /** POST /{ruleId}/reset → 순번 초기화 */
     @PostMapping("/{ruleId}/reset")
     public ResponseEntity<ApiResponse<Void>> resetSequence(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String ruleId) {
         numberingRuleService.resetSequence(ruleId, companyCode);
         return ResponseEntity.ok(ApiResponse.success(null, "시퀀스가 초기화되었습니다."));
@@ -243,10 +243,10 @@ public class NumberingRuleController {
     /** POST /copy-for-company → 회사간 규칙 복제 (SUPER_ADMIN) */
     @PostMapping("/copy-for-company")
     public ResponseEntity<ApiResponse<Map<String, Object>>> copyRulesForCompany(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        String sourceCompanyCode = (String) body.get("sourceCompanyCode");
-        String targetCompanyCode = (String) body.get("targetCompanyCode");
+        String sourceCompanyCode = (String) body.get("source_company_code");
+        String targetCompanyCode = (String) body.get("target_company_code");
         if (sourceCompanyCode == null || targetCompanyCode == null) {
             return ResponseEntity.badRequest()
                     .body(ApiResponse.error("sourceCompanyCode와 targetCompanyCode가 필요합니다."));
diff --git a/backend-spring/src/main/java/com/erp/controller/OpenApiProxyController.java b/backend-spring/src/main/java/com/erp/controller/OpenApiProxyController.java
index 7721d542..4c0909a8 100644
--- a/backend-spring/src/main/java/com/erp/controller/OpenApiProxyController.java
+++ b/backend-spring/src/main/java/com/erp/controller/OpenApiProxyController.java
@@ -16,46 +16,46 @@ public class OpenApiProxyController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getOpenApiProxyList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(openApiProxyService.getOpenApiProxyList(params)));
     }
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getOpenApiProxyInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(openApiProxyService.getOpenApiProxyInfo(params)));
     }
 
     @PostMapping
     public ResponseEntity<ApiResponse<Integer>> insertOpenApiProxy(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(openApiProxyService.insertOpenApiProxy(body)));
     }
 
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Integer>> updateOpenApiProxy(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(openApiProxyService.updateOpenApiProxy(body)));
     }
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Integer>> deleteOpenApiProxy(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(openApiProxyService.deleteOpenApiProxy(params)));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/PackagingController.java b/backend-spring/src/main/java/com/erp/controller/PackagingController.java
index f7bef5c8..fd4d3a5d 100644
--- a/backend-spring/src/main/java/com/erp/controller/PackagingController.java
+++ b/backend-spring/src/main/java/com/erp/controller/PackagingController.java
@@ -23,36 +23,36 @@ public class PackagingController {
 
     @GetMapping("/pkg-units")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getPkgUnits(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(packagingService.getPkgUnits(params)));
     }
 
     @PostMapping("/pkg-units")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createPkgUnit(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.status(201).body(ApiResponse.success(packagingService.createPkgUnit(body)));
     }
 
     @PutMapping("/pkg-units/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updatePkgUnit(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(packagingService.updatePkgUnit(body)));
     }
 
     @DeleteMapping("/pkg-units/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deletePkgUnit(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(packagingService.deletePkgUnit(params)));
     }
@@ -61,28 +61,28 @@ public class PackagingController {
 
     @GetMapping("/pkg-unit-items/{pkgCode}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getPkgUnitItems(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String pkgCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("pkgCode", pkgCode);
+        params.put("company_code", companyCode);
+        params.put("pkg_code", pkgCode);
         return ResponseEntity.ok(ApiResponse.success(packagingService.getPkgUnitItems(params)));
     }
 
     @PostMapping("/pkg-unit-items")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createPkgUnitItem(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.status(201).body(ApiResponse.success(packagingService.createPkgUnitItem(body)));
     }
 
     @DeleteMapping("/pkg-unit-items/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deletePkgUnitItem(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(packagingService.deletePkgUnitItem(params)));
     }
@@ -91,36 +91,36 @@ public class PackagingController {
 
     @GetMapping("/loading-units")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getLoadingUnits(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(packagingService.getLoadingUnits(params)));
     }
 
     @PostMapping("/loading-units")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createLoadingUnit(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.status(201).body(ApiResponse.success(packagingService.createLoadingUnit(body)));
     }
 
     @PutMapping("/loading-units/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateLoadingUnit(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(packagingService.updateLoadingUnit(body)));
     }
 
     @DeleteMapping("/loading-units/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteLoadingUnit(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(packagingService.deleteLoadingUnit(params)));
     }
@@ -129,28 +129,28 @@ public class PackagingController {
 
     @GetMapping("/loading-unit-pkgs/{loadingCode}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getLoadingUnitPkgs(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String loadingCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("loadingCode", loadingCode);
+        params.put("company_code", companyCode);
+        params.put("loading_code", loadingCode);
         return ResponseEntity.ok(ApiResponse.success(packagingService.getLoadingUnitPkgs(params)));
     }
 
     @PostMapping("/loading-unit-pkgs")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createLoadingUnitPkg(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.status(201).body(ApiResponse.success(packagingService.createLoadingUnitPkg(body)));
     }
 
     @DeleteMapping("/loading-unit-pkgs/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteLoadingUnitPkg(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(packagingService.deleteLoadingUnitPkg(params)));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/PopActionController.java b/backend-spring/src/main/java/com/erp/controller/PopActionController.java
index fa8ce4fa..a7b06d5e 100644
--- a/backend-spring/src/main/java/com/erp/controller/PopActionController.java
+++ b/backend-spring/src/main/java/com/erp/controller/PopActionController.java
@@ -23,13 +23,13 @@ public class PopActionController {
      */
     @PostMapping("/execute-action")
     public ResponseEntity<ApiResponse<Map<String, Object>>> executeAction(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
         try {
             Map<String, Object> result = popActionService.executeAction(body, companyCode, userId);
             String message = result.containsKey("message") ? result.get("message").toString()
-                    : result.get("processedCount") + "건 처리 완료";
+                    : result.get("processed_count") + "건 처리 완료";
             return ResponseEntity.ok(ApiResponse.success(result, message));
         } catch (PopActionService.PreConditionFailException e) {
             return ResponseEntity.status(409).body(ApiResponse.error(e.getMessage()));
diff --git a/backend-spring/src/main/java/com/erp/controller/PopProductionController.java b/backend-spring/src/main/java/com/erp/controller/PopProductionController.java
index b75200ac..05c6bb77 100644
--- a/backend-spring/src/main/java/com/erp/controller/PopProductionController.java
+++ b/backend-spring/src/main/java/com/erp/controller/PopProductionController.java
@@ -19,19 +19,19 @@ public class PopProductionController {
 
     @PostMapping("/create-work-processes")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createWorkProcesses(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("userId", userId);
+        body.put("company_code", companyCode);
+        body.put("user_id", userId);
         return ResponseEntity.ok(ApiResponse.success(popProductionService.createWorkProcesses(body)));
     }
 
     @PostMapping("/timer")
     public ResponseEntity<ApiResponse<Map<String, Object>>> controlTimer(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(popProductionService.controlTimer(body)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/ProcessWorkStandardController.java b/backend-spring/src/main/java/com/erp/controller/ProcessWorkStandardController.java
index 222d5c3e..458f7e85 100644
--- a/backend-spring/src/main/java/com/erp/controller/ProcessWorkStandardController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ProcessWorkStandardController.java
@@ -16,160 +16,160 @@ public class ProcessWorkStandardController {
 
     @GetMapping("/items")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getProcessWorkStandardItemList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.getProcessWorkStandardItemList(params)));
     }
 
     @GetMapping("/items/{itemCode}/routings")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getProcessWorkStandardRoutingList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String itemCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("itemCode", itemCode);
+        params.put("company_code", companyCode);
+        params.put("item_code", itemCode);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.getProcessWorkStandardRoutingList(params)));
     }
 
     @PutMapping("/versions/{versionId}/set-default")
     public ResponseEntity<ApiResponse<Map<String, Object>>> setProcessWorkStandardDefaultVersion(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long versionId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("versionId", versionId);
+        params.put("company_code", companyCode);
+        params.put("version_id", versionId);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.setProcessWorkStandardDefaultVersion(params)));
     }
 
     @PutMapping("/versions/{versionId}/unset-default")
     public ResponseEntity<ApiResponse<Map<String, Object>>> unsetProcessWorkStandardDefaultVersion(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long versionId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("versionId", versionId);
+        params.put("company_code", companyCode);
+        params.put("version_id", versionId);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.unsetProcessWorkStandardDefaultVersion(params)));
     }
 
     @GetMapping("/routing-detail/{routingDetailId}/work-items")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getProcessWorkStandardWorkItemList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long routingDetailId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("routingDetailId", routingDetailId);
+        params.put("company_code", companyCode);
+        params.put("routing_detail_id", routingDetailId);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.getProcessWorkStandardWorkItemList(params)));
     }
 
     @PostMapping("/work-items")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertProcessWorkStandardWorkItem(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.insertProcessWorkStandardWorkItem(body)));
     }
 
     @PutMapping("/work-items/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateProcessWorkStandardWorkItem(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.updateProcessWorkStandardWorkItem(body)));
     }
 
     @DeleteMapping("/work-items/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteProcessWorkStandardWorkItem(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.deleteProcessWorkStandardWorkItem(params)));
     }
 
     @GetMapping("/work-items/{workItemId}/details")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getProcessWorkStandardWorkItemDetailList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long workItemId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("workItemId", workItemId);
+        params.put("company_code", companyCode);
+        params.put("work_item_id", workItemId);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.getProcessWorkStandardWorkItemDetailList(params)));
     }
 
     @PostMapping("/work-item-details")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertProcessWorkStandardWorkItemDetail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.insertProcessWorkStandardWorkItemDetail(body)));
     }
 
     @PutMapping("/work-item-details/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateProcessWorkStandardWorkItemDetail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.updateProcessWorkStandardWorkItemDetail(body)));
     }
 
     @DeleteMapping("/work-item-details/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteProcessWorkStandardWorkItemDetail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.deleteProcessWorkStandardWorkItemDetail(params)));
     }
 
     @PutMapping("/save-all")
     public ResponseEntity<ApiResponse<Map<String, Object>>> saveAllProcessWorkStandard(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.saveAllProcessWorkStandard(body)));
     }
 
     @GetMapping("/registered-items/{screenCode}")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getProcessWorkStandardRegisteredItemList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String screenCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("screenCode", screenCode);
+        params.put("company_code", companyCode);
+        params.put("screen_code", screenCode);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.getProcessWorkStandardRegisteredItemList(params)));
     }
 
     @PostMapping("/registered-items")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertProcessWorkStandardRegisteredItem(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.insertProcessWorkStandardRegisteredItem(body)));
     }
 
     @PostMapping("/registered-items/batch")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertProcessWorkStandardRegisteredItemBatch(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody List<Map<String, Object>> body) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("items", body);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.insertProcessWorkStandardRegisteredItemBatch(params)));
     }
 
     @DeleteMapping("/registered-items/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteProcessWorkStandardRegisteredItem(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(processWorkStandardService.deleteProcessWorkStandardRegisteredItem(params)));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/ProductionController.java b/backend-spring/src/main/java/com/erp/controller/ProductionController.java
index 4a6c36c9..e4ae90dd 100644
--- a/backend-spring/src/main/java/com/erp/controller/ProductionController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ProductionController.java
@@ -21,29 +21,29 @@ public class ProductionController {
 
     @GetMapping("/order-summary")
     public ResponseEntity<ApiResponse<Object>> getOrderSummary(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(productionService.getOrderSummary(params)));
     }
 
     @GetMapping("/stock-shortage")
     public ResponseEntity<ApiResponse<Object>> getStockShortage(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(productionService.getStockShortage(companyCode)));
     }
 
     @GetMapping("/plan/{id}")
     public ResponseEntity<ApiResponse<Object>> getPlanById(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         return ResponseEntity.ok(ApiResponse.success(productionService.getPlanById(companyCode, id)));
     }
 
     @PutMapping("/plan/{id}")
     public ResponseEntity<ApiResponse<Object>> updatePlan(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
         return ResponseEntity.ok(ApiResponse.success(productionService.updatePlan(companyCode, id, body, userId)));
@@ -51,7 +51,7 @@ public class ProductionController {
 
     @DeleteMapping("/plan/{id}")
     public ResponseEntity<ApiResponse<Object>> deletePlan(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         return ResponseEntity.ok(ApiResponse.success(productionService.deletePlan(companyCode, id)));
     }
@@ -59,7 +59,7 @@ public class ProductionController {
     @PostMapping("/generate-schedule/preview")
     @SuppressWarnings("unchecked")
     public ResponseEntity<ApiResponse<Object>> previewSchedule(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
         List<Map<String, Object>> items = (List<Map<String, Object>>) body.get("items");
         return ResponseEntity.ok(ApiResponse.success(productionService.previewSchedule(companyCode, items, body)));
@@ -68,8 +68,8 @@ public class ProductionController {
     @PostMapping("/generate-schedule")
     @SuppressWarnings("unchecked")
     public ResponseEntity<ApiResponse<Object>> generateSchedule(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
         List<Map<String, Object>> items = (List<Map<String, Object>>) body.get("items");
         return ResponseEntity.ok(ApiResponse.success(productionService.generateSchedule(companyCode, items, body, userId)));
@@ -78,21 +78,21 @@ public class ProductionController {
     @PostMapping("/merge-schedules")
     @SuppressWarnings("unchecked")
     public ResponseEntity<ApiResponse<Object>> mergeSchedules(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        List<Number> rawIds = (List<Number>) body.get("scheduleIds");
+        List<Number> rawIds = (List<Number>) body.get("schedule_ids");
         List<Long> scheduleIds = rawIds.stream().map(Number::longValue).collect(Collectors.toList());
-        String productType = body.get("productType") != null ? String.valueOf(body.get("productType")) : "완제품";
+        String productType = body.get("product_type") != null ? String.valueOf(body.get("product_type")) : "완제품";
         return ResponseEntity.ok(ApiResponse.success(productionService.mergeSchedules(companyCode, scheduleIds, productType, userId)));
     }
 
     @PostMapping("/generate-semi-schedule/preview")
     @SuppressWarnings("unchecked")
     public ResponseEntity<ApiResponse<Object>> previewSemiSchedule(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        List<Number> rawIds = (List<Number>) body.get("planIds");
+        List<Number> rawIds = (List<Number>) body.get("plan_ids");
         List<Long> planIds = rawIds.stream().map(Number::longValue).collect(Collectors.toList());
         return ResponseEntity.ok(ApiResponse.success(productionService.previewSemiSchedule(companyCode, planIds, body)));
     }
@@ -100,21 +100,21 @@ public class ProductionController {
     @PostMapping("/generate-semi-schedule")
     @SuppressWarnings("unchecked")
     public ResponseEntity<ApiResponse<Object>> generateSemiSchedule(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        List<Number> rawIds = (List<Number>) body.get("planIds");
+        List<Number> rawIds = (List<Number>) body.get("plan_ids");
         List<Long> planIds = rawIds.stream().map(Number::longValue).collect(Collectors.toList());
         return ResponseEntity.ok(ApiResponse.success(productionService.generateSemiSchedule(companyCode, planIds, body, userId)));
     }
 
     @PostMapping("/plan/{id}/split")
     public ResponseEntity<ApiResponse<Object>> splitSchedule(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        double splitQty = toDouble(body.get("splitQty"));
+        double splitQty = toDouble(body.get("split_qty"));
         return ResponseEntity.ok(ApiResponse.success(productionService.splitSchedule(companyCode, id, splitQty, userId)));
     }
 
diff --git a/backend-spring/src/main/java/com/erp/controller/ReportController.java b/backend-spring/src/main/java/com/erp/controller/ReportController.java
index 9fb9fb2e..255a0b36 100644
--- a/backend-spring/src/main/java/com/erp/controller/ReportController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ReportController.java
@@ -20,9 +20,9 @@ public class ReportController {
 
     @GetMapping("/external-connections")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getExternalConnections(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(reportService.getExternalConnections(params)));
     }
 
@@ -35,18 +35,18 @@ public class ReportController {
 
     @PostMapping("/templates")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createTemplate(
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("createdBy", userId);
+        body.put("created_by", userId);
         Map<String, Object> result = reportService.createTemplate(body);
         return ResponseEntity.status(201).body(ApiResponse.success(result));
     }
 
     @PostMapping("/templates/create-from-layout")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createTemplateFromLayout(
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("createdBy", userId);
+        body.put("created_by", userId);
         Map<String, Object> result = reportService.createTemplateFromLayout(body);
         return ResponseEntity.status(201).body(ApiResponse.success(result));
     }
@@ -55,7 +55,7 @@ public class ReportController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteTemplate(
             @PathVariable String templateId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("templateId", templateId);
+        params.put("template_id", templateId);
         return ResponseEntity.ok(ApiResponse.success(reportService.deleteTemplate(params)));
     }
 
@@ -79,9 +79,9 @@ public class ReportController {
 
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getReportList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(reportService.getReportList(params)));
     }
 
@@ -89,15 +89,15 @@ public class ReportController {
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createReport(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @RequestBody Map<String, Object> body) {
-        if (body.get("reportNameKor") == null || body.get("reportType") == null) {
+        if (body.get("report_name_kor") == null || body.get("report_type") == null) {
             return ResponseEntity.status(400).body(
                 ApiResponse.error("리포트명과 리포트 타입은 필수입니다."));
         }
-        body.put("companyCode", companyCode);
-        body.put("createdBy", userId);
+        body.put("company_code", companyCode);
+        body.put("created_by", userId);
         Map<String, Object> result = reportService.createReport(body);
         return ResponseEntity.status(201).body(ApiResponse.success(result, "리포트가 생성되었습니다."));
     }
@@ -106,13 +106,13 @@ public class ReportController {
 
     @PostMapping("/{reportId}/copy")
     public ResponseEntity<ApiResponse<Map<String, Object>>> copyReport(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String reportId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("reportId", reportId);
-        params.put("companyCode", companyCode);
-        params.put("userId", userId);
+        params.put("report_id", reportId);
+        params.put("company_code", companyCode);
+        params.put("user_id", userId);
         Map<String, Object> result = reportService.copyReport(params);
         if (result == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("리포트를 찾을 수 없습니다."));
@@ -124,11 +124,11 @@ public class ReportController {
 
     @PostMapping("/{reportId}/save-as-template")
     public ResponseEntity<ApiResponse<Map<String, Object>>> saveAsTemplate(
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String reportId,
             @RequestBody Map<String, Object> body) {
-        body.put("reportId", reportId);
-        body.put("userId", userId);
+        body.put("report_id", reportId);
+        body.put("user_id", userId);
         Map<String, Object> result = reportService.saveAsTemplate(body);
         return ResponseEntity.status(201).body(ApiResponse.success(result));
     }
@@ -138,7 +138,7 @@ public class ReportController {
     @GetMapping("/{reportId}/layout")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getLayout(
             @PathVariable String reportId) {
-        Map<String, Object> params = Map.of("reportId", reportId);
+        Map<String, Object> params = Map.of("report_id", reportId);
         Map<String, Object> result = reportService.getLayout(params);
         if (result == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("레이아웃을 찾을 수 없습니다."));
@@ -148,11 +148,11 @@ public class ReportController {
 
     @PutMapping("/{reportId}/layout")
     public ResponseEntity<ApiResponse<Map<String, Object>>> saveLayout(
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String reportId,
             @RequestBody Map<String, Object> body) {
-        body.put("reportId", reportId);
-        body.put("userId", userId);
+        body.put("report_id", reportId);
+        body.put("user_id", userId);
         Map<String, Object> result = reportService.saveLayout(body);
         return ResponseEntity.ok(ApiResponse.success(result));
     }
@@ -164,8 +164,8 @@ public class ReportController {
             @PathVariable String reportId,
             @PathVariable String queryId,
             @RequestBody Map<String, Object> body) {
-        body.put("reportId", reportId);
-        body.put("queryId", queryId);
+        body.put("report_id", reportId);
+        body.put("query_id", queryId);
         Map<String, Object> result = reportService.executeQuery(body);
         return ResponseEntity.ok(ApiResponse.success(result));
     }
@@ -174,11 +174,11 @@ public class ReportController {
 
     @GetMapping("/{reportId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getReportInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String reportId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("reportId", reportId);
-        params.put("companyCode", companyCode);
+        params.put("report_id", reportId);
+        params.put("company_code", companyCode);
         Map<String, Object> result = reportService.getReportInfo(params);
         if (result == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("리포트를 찾을 수 없습니다."));
@@ -188,23 +188,23 @@ public class ReportController {
 
     @PutMapping("/{reportId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateReport(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute(value = "userId", required = false) String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute(value = "user_id", required = false) String userId,
             @PathVariable String reportId,
             @RequestBody Map<String, Object> body) {
-        body.put("reportId", reportId);
-        body.put("companyCode", companyCode);
-        body.put("updatedBy", userId);
+        body.put("report_id", reportId);
+        body.put("company_code", companyCode);
+        body.put("updated_by", userId);
         return ResponseEntity.ok(ApiResponse.success(reportService.updateReport(body)));
     }
 
     @DeleteMapping("/{reportId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteReport(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String reportId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("reportId", reportId);
-        params.put("companyCode", companyCode);
+        params.put("report_id", reportId);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(reportService.deleteReport(params)));
     }
 
@@ -212,9 +212,9 @@ public class ReportController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getReportListLegacy(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(reportService.getReportList(params)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/RiskAlertController.java b/backend-spring/src/main/java/com/erp/controller/RiskAlertController.java
index d9a06805..49cf4315 100644
--- a/backend-spring/src/main/java/com/erp/controller/RiskAlertController.java
+++ b/backend-spring/src/main/java/com/erp/controller/RiskAlertController.java
@@ -19,46 +19,46 @@ public class RiskAlertController {
     /** GET / → 전체 알림 목록 */
     @GetMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> getAllAlerts(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(riskAlertService.getAllAlerts(params)));
     }
 
     /** POST /refresh → 알림 새로고침 */
     @PostMapping("/refresh")
     public ResponseEntity<ApiResponse<Map<String, Object>>> refreshAlerts(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody(required = false) Map<String, Object> body) {
         Map<String, Object> params = body != null ? new HashMap<>(body) : new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(riskAlertService.refreshAlerts(params)));
     }
 
     /** GET /weather → 기상 알림 목록 */
     @GetMapping("/weather")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getWeatherAlerts(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(riskAlertService.getWeatherAlerts(params)));
     }
 
     /** GET /accidents → 사고 알림 목록 */
     @GetMapping("/accidents")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getAccidentAlerts(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(riskAlertService.getAccidentAlerts(params)));
     }
 
     /** GET /roadworks → 공사 알림 목록 */
     @GetMapping("/roadworks")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getRoadworkAlerts(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(riskAlertService.getRoadworkAlerts(params)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/RoleController.java b/backend-spring/src/main/java/com/erp/controller/RoleController.java
index 38d53589..e94b4288 100644
--- a/backend-spring/src/main/java/com/erp/controller/RoleController.java
+++ b/backend-spring/src/main/java/com/erp/controller/RoleController.java
@@ -29,7 +29,7 @@ public class RoleController {
      */
     @GetMapping
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getRoleGroups(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
             @RequestParam Map<String, Object> params) {
 
@@ -40,7 +40,7 @@ public class RoleController {
         // SUPER_ADMIN: 요청 파라미터의 companyCode 사용 (없으면 전체)
         // 그 외: 자신의 companyCode 강제 적용
         if (!isSuperAdmin(role)) {
-            params.put("companyCode", companyCode);
+            params.put("company_code", companyCode);
         }
 
         return ResponseEntity.ok(ApiResponse.success(roleService.getRoleGroups(params), "권한 그룹 목록 조회 성공"));
@@ -53,7 +53,7 @@ public class RoleController {
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getRoleGroupById(
             @PathVariable String id,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role) {
 
         if (!isAdmin(role)) {
@@ -68,7 +68,7 @@ public class RoleController {
             return ResponseEntity.status(404).body(ApiResponse.error("권한 그룹을 찾을 수 없습니다."));
         }
 
-        if (!isSuperAdmin(role) && !companyCode.equals(group.get("companyCode"))) {
+        if (!isSuperAdmin(role) && !companyCode.equals(group.get("company_code"))) {
             return ResponseEntity.status(403).body(ApiResponse.error("권한이 없습니다."));
         }
 
@@ -81,16 +81,16 @@ public class RoleController {
      */
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createRoleGroup(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
         if (!isAdmin(role)) {
             return ResponseEntity.status(403).body(ApiResponse.error("관리자 권한이 필요합니다."));
         }
 
-        String targetCompany = (String) body.get("companyCode");
+        String targetCompany = (String) body.get("company_code");
         if (!isSuperAdmin(role) && !companyCode.equals(targetCompany)) {
             return ResponseEntity.status(403).body(ApiResponse.error("다른 회사의 권한 그룹을 생성할 수 없습니다."));
         }
@@ -109,7 +109,7 @@ public class RoleController {
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateRoleGroup(
             @PathVariable String id,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
             @RequestBody Map<String, Object> body) {
 
@@ -123,7 +123,7 @@ public class RoleController {
             return ResponseEntity.status(404).body(ApiResponse.error("권한 그룹을 찾을 수 없습니다."));
         }
 
-        if (!isSuperAdmin(role) && !companyCode.equals(existing.get("companyCode"))) {
+        if (!isSuperAdmin(role) && !companyCode.equals(existing.get("company_code"))) {
             return ResponseEntity.status(403).body(ApiResponse.error("권한이 없습니다."));
         }
 
@@ -141,7 +141,7 @@ public class RoleController {
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteRoleGroup(
             @PathVariable String id,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role) {
 
         if (!isAdmin(role)) {
@@ -154,7 +154,7 @@ public class RoleController {
             return ResponseEntity.status(404).body(ApiResponse.error("권한 그룹을 찾을 수 없습니다."));
         }
 
-        if (!isSuperAdmin(role) && !companyCode.equals(existing.get("companyCode"))) {
+        if (!isSuperAdmin(role) && !companyCode.equals(existing.get("company_code"))) {
             return ResponseEntity.status(403).body(ApiResponse.error("권한이 없습니다."));
         }
 
@@ -174,12 +174,12 @@ public class RoleController {
      */
     @GetMapping("/user/my-groups")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getMyRoleGroups(
-            @RequestAttribute("userId") String userId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("user_id") String userId,
+            @RequestAttribute("company_code") String companyCode) {
 
         Map<String, Object> params = new HashMap<>();
-        params.put("userId", userId);
-        params.put("companyCode", companyCode);
+        params.put("user_id", userId);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(roleService.getUserRoleGroups(params), "사용자 권한 그룹 조회 성공"));
     }
 
@@ -189,9 +189,9 @@ public class RoleController {
      */
     @GetMapping("/menus/all")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getAllMenus(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
-            @RequestParam(value = "companyCode", required = false) String requestedCompanyCode) {
+            @RequestParam(value = "company_code", required = false) String requestedCompanyCode) {
 
         if (!isAdmin(role)) {
             return ResponseEntity.status(403).body(ApiResponse.error("관리자 권한이 필요합니다."));
@@ -200,9 +200,9 @@ public class RoleController {
         Map<String, Object> params = new HashMap<>();
         if (isSuperAdmin(role)) {
             // SUPER_ADMIN: 쿼리 파라미터로 받은 companyCode 사용 (없으면 전체)
-            params.put("companyCode", requestedCompanyCode);
+            params.put("company_code", requestedCompanyCode);
         } else {
-            params.put("companyCode", companyCode);
+            params.put("company_code", companyCode);
         }
 
         return ResponseEntity.ok(ApiResponse.success(roleService.getAllMenus(params), "메뉴 목록 조회 성공"));
@@ -215,7 +215,7 @@ public class RoleController {
     @GetMapping("/{id}/members")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getRoleMembers(
             @PathVariable String id,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role) {
 
         if (!isAdmin(role)) {
@@ -227,12 +227,12 @@ public class RoleController {
         if (group == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("권한 그룹을 찾을 수 없습니다."));
         }
-        if (!isSuperAdmin(role) && !companyCode.equals(group.get("companyCode"))) {
+        if (!isSuperAdmin(role) && !companyCode.equals(group.get("company_code"))) {
             return ResponseEntity.status(403).body(ApiResponse.error("권한이 없습니다."));
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("masterObjid", parseLong(id));
+        params.put("master_objid", parseLong(id));
         return ResponseEntity.ok(ApiResponse.success(roleService.getRoleMembers(params), "권한 그룹 멤버 조회 성공"));
     }
 
@@ -243,9 +243,9 @@ public class RoleController {
     @PostMapping("/{id}/members")
     public ResponseEntity<ApiResponse<Void>> addRoleMembers(
             @PathVariable String id,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
-            @RequestAttribute("userId") String currentUserId,
+            @RequestAttribute("user_id") String currentUserId,
             @RequestBody Map<String, Object> body) {
 
         if (!isAdmin(role)) {
@@ -257,12 +257,12 @@ public class RoleController {
         if (group == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("권한 그룹을 찾을 수 없습니다."));
         }
-        if (!isSuperAdmin(role) && !companyCode.equals(group.get("companyCode"))) {
+        if (!isSuperAdmin(role) && !companyCode.equals(group.get("company_code"))) {
             return ResponseEntity.status(403).body(ApiResponse.error("권한이 없습니다."));
         }
 
         Map<String, Object> params = new HashMap<>(body);
-        params.put("masterObjid", parseLong(id));
+        params.put("master_objid", parseLong(id));
         params.put("writer", currentUserId);
         roleService.addRoleMembers(params);
         return ResponseEntity.ok(ApiResponse.success(null, "권한 그룹 멤버 추가 성공"));
@@ -275,9 +275,9 @@ public class RoleController {
     @PutMapping("/{id}/members")
     public ResponseEntity<ApiResponse<Void>> updateRoleMembers(
             @PathVariable String id,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
-            @RequestAttribute("userId") String currentUserId,
+            @RequestAttribute("user_id") String currentUserId,
             @RequestBody Map<String, Object> body) {
 
         if (!isAdmin(role)) {
@@ -289,12 +289,12 @@ public class RoleController {
         if (group == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("권한 그룹을 찾을 수 없습니다."));
         }
-        if (!isSuperAdmin(role) && !companyCode.equals(group.get("companyCode"))) {
+        if (!isSuperAdmin(role) && !companyCode.equals(group.get("company_code"))) {
             return ResponseEntity.status(403).body(ApiResponse.error("권한이 없습니다."));
         }
 
         Map<String, Object> params = new HashMap<>(body);
-        params.put("masterObjid", parseLong(id));
+        params.put("master_objid", parseLong(id));
         params.put("writer", currentUserId);
         roleService.updateRoleMembers(params);
         return ResponseEntity.ok(ApiResponse.success(null, "권한 그룹 멤버 업데이트 성공"));
@@ -307,7 +307,7 @@ public class RoleController {
     @DeleteMapping("/{id}/members")
     public ResponseEntity<ApiResponse<Void>> removeRoleMembers(
             @PathVariable String id,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
             @RequestBody Map<String, Object> body) {
 
@@ -320,12 +320,12 @@ public class RoleController {
         if (group == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("권한 그룹을 찾을 수 없습니다."));
         }
-        if (!isSuperAdmin(role) && !companyCode.equals(group.get("companyCode"))) {
+        if (!isSuperAdmin(role) && !companyCode.equals(group.get("company_code"))) {
             return ResponseEntity.status(403).body(ApiResponse.error("권한이 없습니다."));
         }
 
         Map<String, Object> params = new HashMap<>(body);
-        params.put("masterObjid", parseLong(id));
+        params.put("master_objid", parseLong(id));
         roleService.removeRoleMembers(params);
         return ResponseEntity.ok(ApiResponse.success(null, "권한 그룹 멤버 제거 성공"));
     }
@@ -341,7 +341,7 @@ public class RoleController {
     @GetMapping("/{id}/menu-permissions")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getMenuPermissions(
             @PathVariable String id,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role) {
 
         if (!isAdmin(role)) {
@@ -353,12 +353,12 @@ public class RoleController {
         if (group == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("권한 그룹을 찾을 수 없습니다."));
         }
-        if (!isSuperAdmin(role) && !companyCode.equals(group.get("companyCode"))) {
+        if (!isSuperAdmin(role) && !companyCode.equals(group.get("company_code"))) {
             return ResponseEntity.status(403).body(ApiResponse.error("권한이 없습니다."));
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("authObjid", parseLong(id));
+        params.put("auth_objid", parseLong(id));
         return ResponseEntity.ok(ApiResponse.success(roleService.getMenuPermissions(params), "메뉴 권한 조회 성공"));
     }
 
@@ -369,9 +369,9 @@ public class RoleController {
     @PutMapping("/{id}/menu-permissions")
     public ResponseEntity<ApiResponse<Void>> setMenuPermissions(
             @PathVariable String id,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role,
-            @RequestAttribute("userId") String currentUserId,
+            @RequestAttribute("user_id") String currentUserId,
             @RequestBody Map<String, Object> body) {
 
         if (!isAdmin(role)) {
@@ -383,12 +383,12 @@ public class RoleController {
         if (group == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("권한 그룹을 찾을 수 없습니다."));
         }
-        if (!isSuperAdmin(role) && !companyCode.equals(group.get("companyCode"))) {
+        if (!isSuperAdmin(role) && !companyCode.equals(group.get("company_code"))) {
             return ResponseEntity.status(403).body(ApiResponse.error("권한이 없습니다."));
         }
 
         Map<String, Object> params = new HashMap<>(body);
-        params.put("authObjid", parseLong(id));
+        params.put("auth_objid", parseLong(id));
         params.put("writer", currentUserId);
         roleService.setMenuPermissions(params);
         return ResponseEntity.ok(ApiResponse.success(null, "메뉴 권한 설정 성공"));
@@ -401,7 +401,7 @@ public class RoleController {
     @GetMapping("/user/{userId}/groups")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getUserRoleGroups(
             @PathVariable String userId,
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestAttribute("role") String role) {
 
         if (!isAdmin(role)) {
@@ -409,8 +409,8 @@ public class RoleController {
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("userId", userId);
-        params.put("companyCode", isSuperAdmin(role) ? null : companyCode);
+        params.put("user_id", userId);
+        params.put("company_code", isSuperAdmin(role) ? null : companyCode);
         return ResponseEntity.ok(ApiResponse.success(roleService.getUserRoleGroups(params), "사용자 권한 그룹 조회 성공"));
     }
 
diff --git a/backend-spring/src/main/java/com/erp/controller/SalesReportController.java b/backend-spring/src/main/java/com/erp/controller/SalesReportController.java
index b3543e0b..49daf68d 100644
--- a/backend-spring/src/main/java/com/erp/controller/SalesReportController.java
+++ b/backend-spring/src/main/java/com/erp/controller/SalesReportController.java
@@ -19,25 +19,25 @@ public class SalesReportController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getSalesReportList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(salesReportService.getSalesReportList(params)));
     }
 
     @GetMapping("/summary")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getSalesReportSummary(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(salesReportService.getSalesReportSummary(params)));
     }
 
     @GetMapping("/data")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getSalesReportData(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(salesReportService.getSalesReportData(params)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/ScheduleController.java b/backend-spring/src/main/java/com/erp/controller/ScheduleController.java
index 0c394f78..2c98269b 100644
--- a/backend-spring/src/main/java/com/erp/controller/ScheduleController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ScheduleController.java
@@ -18,9 +18,9 @@ public class ScheduleController {
 
     @GetMapping("/list")
     public ResponseEntity<Map<String, Object>> getScheduleList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         List<Map<String, Object>> list = scheduleService.getScheduleList(params);
         Map<String, Object> resp = new LinkedHashMap<>();
         resp.put("success", true);
@@ -31,11 +31,11 @@ public class ScheduleController {
 
     @GetMapping("/{scheduleId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getScheduleInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long scheduleId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("scheduleId", scheduleId);
+        params.put("company_code", companyCode);
+        params.put("schedule_id", scheduleId);
         return ResponseEntity.ok(ApiResponse.success(scheduleService.getScheduleInfo(params)));
     }
 
@@ -45,9 +45,9 @@ public class ScheduleController {
      */
     @PostMapping("/preview")
     public ResponseEntity<ApiResponse<Map<String, Object>>> previewSchedule(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         try {
             Map<String, Object> preview = scheduleService.previewSchedule(body);
             return ResponseEntity.ok(ApiResponse.success(preview));
@@ -62,11 +62,11 @@ public class ScheduleController {
      */
     @PostMapping("/apply")
     public ResponseEntity<ApiResponse<Map<String, Object>>> applySchedules(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("userId", userId);
+        body.put("company_code", companyCode);
+        body.put("user_id", userId);
         try {
             Map<String, Object> applied = scheduleService.applySchedules(body);
             String message = applied.get("created") + "건 생성, " + applied.get("deleted") + "건 삭제, " + applied.get("updated") + "건 수정되었습니다.";
@@ -78,31 +78,31 @@ public class ScheduleController {
 
     @PostMapping
     public ResponseEntity<ApiResponse<Integer>> insertSchedule(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(scheduleService.insertSchedule(body)));
     }
 
     @PutMapping("/{scheduleId}")
     public ResponseEntity<ApiResponse<Integer>> updateSchedule(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long scheduleId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("scheduleId", scheduleId);
+        body.put("company_code", companyCode);
+        body.put("schedule_id", scheduleId);
         return ResponseEntity.ok(ApiResponse.success(scheduleService.updateSchedule(body)));
     }
 
     @DeleteMapping("/{scheduleId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteSchedule(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable Long scheduleId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("userId", userId);
-        params.put("scheduleId", scheduleId);
+        params.put("company_code", companyCode);
+        params.put("user_id", userId);
+        params.put("schedule_id", scheduleId);
         Map<String, Object> result = scheduleService.deleteSchedule(params);
         if (Boolean.FALSE.equals(result.get("success"))) {
             return ResponseEntity.status(404).body(ApiResponse.error((String) result.get("message")));
diff --git a/backend-spring/src/main/java/com/erp/controller/ScreenEmbeddingController.java b/backend-spring/src/main/java/com/erp/controller/ScreenEmbeddingController.java
index d34b75be..7df85ddf 100644
--- a/backend-spring/src/main/java/com/erp/controller/ScreenEmbeddingController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ScreenEmbeddingController.java
@@ -47,15 +47,15 @@ public class ScreenEmbeddingController {
     @GetMapping("/screen-embedding")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getScreenEmbeddingList(
             @RequestParam(required = false) Long parentScreenId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         if (parentScreenId == null) {
             return ResponseEntity.status(400)
                     .body(ApiResponse.error("부모 화면 ID가 필요합니다."));
         }
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("parentScreenId", parentScreenId);
-            params.put("companyCode",    companyCode);
+            params.put("parent_screen_id", parentScreenId);
+            params.put("company_code",    companyCode);
             return ResponseEntity.ok(ApiResponse.success(service.getScreenEmbeddingList(params)));
         } catch (Exception e) {
             log.error("화면 임베딩 목록 조회 실패", e);
@@ -67,11 +67,11 @@ public class ScreenEmbeddingController {
     @GetMapping("/screen-embedding/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getScreenEmbeddingInfo(
             @PathVariable Long id,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
             params.put("id",          id);
-            params.put("companyCode", companyCode);
+            params.put("company_code", companyCode);
             Map<String, Object> result = service.getScreenEmbeddingInfo(params);
             if (result == null) {
                 return ResponseEntity.status(404)
@@ -88,14 +88,14 @@ public class ScreenEmbeddingController {
     @PostMapping("/screen-embedding")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertScreenEmbedding(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        if (body.get("parentScreenId") == null || body.get("childScreenId") == null
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        if (body.get("parent_screen_id") == null || body.get("child_screen_id") == null
                 || body.get("position") == null || body.get("mode") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("필수 필드가 누락되었습니다."));
         }
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             Map<String, Object> result = service.insertScreenEmbedding(body);
             return ResponseEntity.status(HttpStatus.CREATED).body(ApiResponse.success(result));
@@ -113,12 +113,12 @@ public class ScreenEmbeddingController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateScreenEmbedding(
             @PathVariable Long id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         if (body.get("position") == null && body.get("mode") == null && body.get("config") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("수정할 내용이 없습니다."));
         }
         body.put("id",          id);
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         try {
             Map<String, Object> result = service.updateScreenEmbedding(body);
             if (result == null) {
@@ -136,10 +136,10 @@ public class ScreenEmbeddingController {
     @DeleteMapping("/screen-embedding/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteScreenEmbedding(
             @PathVariable Long id,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
         params.put("id",          id);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         try {
             boolean deleted = service.deleteScreenEmbedding(params);
             if (!deleted) {
@@ -162,16 +162,16 @@ public class ScreenEmbeddingController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> getScreenDataTransferInfo(
             @RequestParam(required = false) Long sourceScreenId,
             @RequestParam(required = false) Long targetScreenId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         if (sourceScreenId == null || targetScreenId == null) {
             return ResponseEntity.status(400)
                     .body(ApiResponse.error("소스 화면 ID와 타겟 화면 ID가 필요합니다."));
         }
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("sourceScreenId", sourceScreenId);
-            params.put("targetScreenId", targetScreenId);
-            params.put("companyCode",    companyCode);
+            params.put("source_screen_id", sourceScreenId);
+            params.put("target_screen_id", targetScreenId);
+            params.put("company_code",    companyCode);
             Map<String, Object> result = service.getScreenDataTransferInfo(params);
             if (result == null) {
                 return ResponseEntity.status(404)
@@ -188,14 +188,14 @@ public class ScreenEmbeddingController {
     @PostMapping("/screen-data-transfer")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertScreenDataTransfer(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        if (body.get("sourceScreenId") == null || body.get("targetScreenId") == null
-                || body.get("dataReceivers") == null) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        if (body.get("source_screen_id") == null || body.get("target_screen_id") == null
+                || body.get("data_receivers") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("필수 필드가 누락되었습니다."));
         }
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             Map<String, Object> result = service.insertScreenDataTransfer(body);
             return ResponseEntity.status(HttpStatus.CREATED).body(ApiResponse.success(result));
@@ -213,12 +213,12 @@ public class ScreenEmbeddingController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateScreenDataTransfer(
             @PathVariable Long id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
-        if (body.get("dataReceivers") == null && body.get("buttonConfig") == null) {
+            @RequestAttribute("company_code") String companyCode) {
+        if (body.get("data_receivers") == null && body.get("button_config") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("수정할 내용이 없습니다."));
         }
         body.put("id",          id);
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         try {
             Map<String, Object> result = service.updateScreenDataTransfer(body);
             if (result == null) {
@@ -236,10 +236,10 @@ public class ScreenEmbeddingController {
     @DeleteMapping("/screen-data-transfer/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteScreenDataTransfer(
             @PathVariable Long id,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
         params.put("id",          id);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         try {
             boolean deleted = service.deleteScreenDataTransfer(params);
             if (!deleted) {
@@ -261,11 +261,11 @@ public class ScreenEmbeddingController {
     @GetMapping("/screen-split-panel/{screenId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getScreenSplitPanelInfo(
             @PathVariable Long screenId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("screenId",    screenId);
-            params.put("companyCode", companyCode);
+            params.put("screen_id",    screenId);
+            params.put("company_code", companyCode);
             Map<String, Object> result = service.getScreenSplitPanelInfo(params);
             if (result == null) {
                 return ResponseEntity.status(404)
@@ -282,14 +282,14 @@ public class ScreenEmbeddingController {
     @PostMapping("/screen-split-panel")
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertScreenSplitPanel(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        if (body.get("screenId") == null || body.get("leftEmbedding") == null
-                || body.get("rightEmbedding") == null || body.get("dataTransfer") == null) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        if (body.get("screen_id") == null || body.get("left_embedding") == null
+                || body.get("right_embedding") == null || body.get("data_transfer") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("필수 필드가 누락되었습니다."));
         }
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             Map<String, Object> result = service.insertScreenSplitPanel(body);
             return ResponseEntity.status(HttpStatus.CREATED).body(ApiResponse.success(result));
@@ -304,12 +304,12 @@ public class ScreenEmbeddingController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateScreenSplitPanel(
             @PathVariable Long id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
-        if (body.get("layoutConfig") == null) {
+            @RequestAttribute("company_code") String companyCode) {
+        if (body.get("layout_config") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("수정할 내용이 없습니다."));
         }
         body.put("id",          id);
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         try {
             Map<String, Object> result = service.updateScreenSplitPanel(body);
             if (result == null) {
@@ -327,10 +327,10 @@ public class ScreenEmbeddingController {
     @DeleteMapping("/screen-split-panel/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteScreenSplitPanel(
             @PathVariable Long id,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
         params.put("id",          id);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         try {
             boolean deleted = service.deleteScreenSplitPanel(params);
             if (!deleted) {
diff --git a/backend-spring/src/main/java/com/erp/controller/ScreenGroupController.java b/backend-spring/src/main/java/com/erp/controller/ScreenGroupController.java
index 5bbbf17d..5911ccd0 100644
--- a/backend-spring/src/main/java/com/erp/controller/ScreenGroupController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ScreenGroupController.java
@@ -34,18 +34,18 @@ public class ScreenGroupController {
             @RequestParam(required = false, defaultValue = "1") int page,
             @RequestParam(required = false, defaultValue = "20") int size,
             @RequestParam(required = false) String filterCompanyCode,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             String effectiveCompanyCode = ("*".equals(companyCode) && filterCompanyCode != null)
                     ? filterCompanyCode : companyCode;
 
             Map<String, Object> params = new HashMap<>();
-            params.put("companyCode", effectiveCompanyCode);
+            params.put("company_code", effectiveCompanyCode);
             params.put("page", page);
             params.put("size", size);
             if (search       != null) params.put("search",        search);
-            if (groupName    != null) params.put("groupName",     groupName);
-            if (parentGroupId != null) params.put("parentGroupId", parentGroupId);
+            if (groupName    != null) params.put("group_name",     groupName);
+            if (parentGroupId != null) params.put("parent_group_id", parentGroupId);
 
             // 페이지네이션 응답은 Node.js 동일 구조(total/page/size/totalPages) 유지
             return ResponseEntity.ok(service.getScreenGroups(params));
@@ -60,11 +60,11 @@ public class ScreenGroupController {
     @GetMapping("/groups/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getScreenGroup(
             @PathVariable Integer id,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
             params.put("id",          id);
-            params.put("companyCode", companyCode);
+            params.put("company_code", companyCode);
             Map<String, Object> group = service.getScreenGroup(params);
             if (group == null) {
                 return ResponseEntity.status(404).body(ApiResponse.error("화면 그룹을 찾을 수 없습니다"));
@@ -81,10 +81,10 @@ public class ScreenGroupController {
     @PostMapping("/groups")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createScreenGroup(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             Map<String, Object> created = service.createScreenGroup(body);
             return ResponseEntity.status(HttpStatus.CREATED).body(ApiResponse.success(created));
@@ -103,11 +103,11 @@ public class ScreenGroupController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateScreenGroup(
             @PathVariable Integer id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         body.put("id",          id);
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.ok(ApiResponse.success(service.updateScreenGroup(body)));
         } catch (NoSuchElementException e) {
@@ -128,13 +128,13 @@ public class ScreenGroupController {
     public ResponseEntity<ApiResponse<Void>> deleteScreenGroup(
             @PathVariable Integer id,
             @RequestParam(required = false, defaultValue = "false") boolean deleteNumberingRules,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         Map<String, Object> params = new HashMap<>();
         params.put("id",                   id);
-        params.put("companyCode",          companyCode);
-        params.put("userId",               userId);
-        params.put("deleteNumberingRules", deleteNumberingRules);
+        params.put("company_code",          companyCode);
+        params.put("user_id",               userId);
+        params.put("delete_numbering_rules", deleteNumberingRules);
         try {
             service.deleteScreenGroup(params);
             return ResponseEntity.ok(ApiResponse.success(null, "화면 그룹이 삭제되었습니다"));
@@ -159,10 +159,10 @@ public class ScreenGroupController {
     @PostMapping("/group-screens")
     public ResponseEntity<ApiResponse<Map<String, Object>>> addScreenToGroup(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.status(HttpStatus.CREATED)
                     .body(ApiResponse.success(service.addScreenToGroup(body)));
@@ -181,11 +181,11 @@ public class ScreenGroupController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateScreenInGroup(
             @PathVariable Integer id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         body.put("id",          id);
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.ok(ApiResponse.success(service.updateScreenInGroup(body)));
         } catch (NoSuchElementException e) {
@@ -202,12 +202,12 @@ public class ScreenGroupController {
     @DeleteMapping("/group-screens/{id}")
     public ResponseEntity<ApiResponse<Void>> removeScreenFromGroup(
             @PathVariable Integer id,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         Map<String, Object> params = new HashMap<>();
         params.put("id",          id);
-        params.put("companyCode", companyCode);
-        params.put("userId",      userId);
+        params.put("company_code", companyCode);
+        params.put("user_id",      userId);
         try {
             service.removeScreenFromGroup(params);
             return ResponseEntity.ok(ApiResponse.success(null, "화면 그룹 연결이 해제되었습니다"));
@@ -230,12 +230,12 @@ public class ScreenGroupController {
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getFieldJoins(
             @RequestParam(required = false) Integer groupId,
             @RequestParam(required = false) Integer screenId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("companyCode", companyCode);
-            if (groupId  != null) params.put("groupId",  groupId);
-            if (screenId != null) params.put("screenId", screenId);
+            params.put("company_code", companyCode);
+            if (groupId  != null) params.put("group_id",  groupId);
+            if (screenId != null) params.put("screen_id", screenId);
             return ResponseEntity.ok(ApiResponse.success(service.getFieldJoins(params)));
         } catch (Exception e) {
             log.error("필드 조인 목록 조회 실패", e);
@@ -248,10 +248,10 @@ public class ScreenGroupController {
     @PostMapping("/field-joins")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createFieldJoin(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.status(HttpStatus.CREATED)
                     .body(ApiResponse.success(service.createFieldJoin(body)));
@@ -267,11 +267,11 @@ public class ScreenGroupController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateFieldJoin(
             @PathVariable Integer id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         body.put("id",          id);
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.ok(ApiResponse.success(service.updateFieldJoin(body)));
         } catch (NoSuchElementException e) {
@@ -288,12 +288,12 @@ public class ScreenGroupController {
     @DeleteMapping("/field-joins/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteFieldJoin(
             @PathVariable Integer id,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         Map<String, Object> params = new HashMap<>();
         params.put("id",          id);
-        params.put("companyCode", companyCode);
-        params.put("userId",      userId);
+        params.put("company_code", companyCode);
+        params.put("user_id",      userId);
         try {
             service.deleteFieldJoin(params);
             return ResponseEntity.ok(ApiResponse.success(null, "필드 조인이 삭제되었습니다"));
@@ -316,12 +316,12 @@ public class ScreenGroupController {
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getDataFlows(
             @RequestParam(required = false) Integer groupId,
             @RequestParam(required = false) Integer screenId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("companyCode", companyCode);
-            if (groupId  != null) params.put("groupId",  groupId);
-            if (screenId != null) params.put("screenId", screenId);
+            params.put("company_code", companyCode);
+            if (groupId  != null) params.put("group_id",  groupId);
+            if (screenId != null) params.put("screen_id", screenId);
             return ResponseEntity.ok(ApiResponse.success(service.getDataFlows(params)));
         } catch (Exception e) {
             log.error("데이터 흐름 목록 조회 실패", e);
@@ -334,10 +334,10 @@ public class ScreenGroupController {
     @PostMapping("/data-flows")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createDataFlow(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.status(HttpStatus.CREATED)
                     .body(ApiResponse.success(service.createDataFlow(body)));
@@ -353,11 +353,11 @@ public class ScreenGroupController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateDataFlow(
             @PathVariable Integer id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         body.put("id",          id);
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.ok(ApiResponse.success(service.updateDataFlow(body)));
         } catch (NoSuchElementException e) {
@@ -374,12 +374,12 @@ public class ScreenGroupController {
     @DeleteMapping("/data-flows/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteDataFlow(
             @PathVariable Integer id,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         Map<String, Object> params = new HashMap<>();
         params.put("id",          id);
-        params.put("companyCode", companyCode);
-        params.put("userId",      userId);
+        params.put("company_code", companyCode);
+        params.put("user_id",      userId);
         try {
             service.deleteDataFlow(params);
             return ResponseEntity.ok(ApiResponse.success(null, "데이터 흐름이 삭제되었습니다"));
@@ -402,12 +402,12 @@ public class ScreenGroupController {
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTableRelations(
             @RequestParam(required = false) Integer groupId,
             @RequestParam(required = false) Integer screenId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("companyCode", companyCode);
-            if (groupId  != null) params.put("groupId",  groupId);
-            if (screenId != null) params.put("screenId", screenId);
+            params.put("company_code", companyCode);
+            if (groupId  != null) params.put("group_id",  groupId);
+            if (screenId != null) params.put("screen_id", screenId);
             return ResponseEntity.ok(ApiResponse.success(service.getTableRelations(params)));
         } catch (Exception e) {
             log.error("화면-테이블 관계 목록 조회 실패", e);
@@ -420,10 +420,10 @@ public class ScreenGroupController {
     @PostMapping("/table-relations")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createTableRelation(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.status(HttpStatus.CREATED)
                     .body(ApiResponse.success(service.createTableRelation(body)));
@@ -439,11 +439,11 @@ public class ScreenGroupController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateTableRelation(
             @PathVariable Integer id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         body.put("id",          id);
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.ok(ApiResponse.success(service.updateTableRelation(body)));
         } catch (NoSuchElementException e) {
@@ -460,12 +460,12 @@ public class ScreenGroupController {
     @DeleteMapping("/table-relations/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteTableRelation(
             @PathVariable Integer id,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         Map<String, Object> params = new HashMap<>();
         params.put("id",          id);
-        params.put("companyCode", companyCode);
-        params.put("userId",      userId);
+        params.put("company_code", companyCode);
+        params.put("user_id",      userId);
         try {
             service.deleteTableRelation(params);
             return ResponseEntity.ok(ApiResponse.success(null, "화면-테이블 관계가 삭제되었습니다"));
@@ -487,11 +487,11 @@ public class ScreenGroupController {
     @GetMapping("/layout-summary/{screenId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getScreenLayoutSummary(
             @PathVariable Integer screenId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("screenId",    screenId);
-            params.put("companyCode", companyCode);
+            params.put("screen_id",    screenId);
+            params.put("company_code", companyCode);
             return ResponseEntity.ok(ApiResponse.success(service.getScreenLayoutSummary(params)));
         } catch (Exception e) {
             log.error("레이아웃 요약 조회 실패: screenId={}", screenId, e);
@@ -504,10 +504,10 @@ public class ScreenGroupController {
     @PostMapping("/layout-summary/batch")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMultipleScreenLayoutSummary(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             @SuppressWarnings("unchecked")
-            List<Integer> screenIds = (List<Integer>) body.get("screenIds");
+            List<Integer> screenIds = (List<Integer>) body.get("screen_ids");
             return ResponseEntity.ok(ApiResponse.success(
                     service.getMultipleScreenLayoutSummary(screenIds)));
         } catch (Exception e) {
@@ -525,10 +525,10 @@ public class ScreenGroupController {
     @PostMapping("/sub-tables/batch")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getScreenSubTables(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             @SuppressWarnings("unchecked")
-            List<Integer> screenIds = (List<Integer>) body.get("screenIds");
+            List<Integer> screenIds = (List<Integer>) body.get("screen_ids");
             return ResponseEntity.ok(ApiResponse.success(
                     service.getScreenSubTables(screenIds)));
         } catch (Exception e) {
@@ -546,7 +546,7 @@ public class ScreenGroupController {
     @GetMapping("/sync/status")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getSyncStatus(
             @RequestParam(required = false) String filterCompanyCode,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             String effectiveCompanyCode = ("*".equals(companyCode) && filterCompanyCode != null)
                     ? filterCompanyCode : companyCode;
@@ -562,12 +562,12 @@ public class ScreenGroupController {
     @PostMapping("/sync/screen-to-menu")
     public ResponseEntity<ApiResponse<Map<String, Object>>> syncScreenGroupsToMenu(
             @RequestBody(required = false) Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         try {
             String targetCompanyCode = companyCode;
-            if (body != null && body.get("companyCode") != null) {
-                targetCompanyCode = (String) body.get("companyCode");
+            if (body != null && body.get("company_code") != null) {
+                targetCompanyCode = (String) body.get("company_code");
             }
             Map<String, Object> result = service.syncScreenGroupsToMenu(targetCompanyCode, userId);
             return ResponseEntity.ok(ApiResponse.success(result));
@@ -582,12 +582,12 @@ public class ScreenGroupController {
     @PostMapping("/sync/menu-to-screen")
     public ResponseEntity<ApiResponse<Map<String, Object>>> syncMenuToScreenGroups(
             @RequestBody(required = false) Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         try {
             String targetCompanyCode = companyCode;
-            if (body != null && body.get("companyCode") != null) {
-                targetCompanyCode = (String) body.get("companyCode");
+            if (body != null && body.get("company_code") != null) {
+                targetCompanyCode = (String) body.get("company_code");
             }
             Map<String, Object> result = service.syncMenuToScreenGroups(targetCompanyCode, userId);
             return ResponseEntity.ok(ApiResponse.success(result));
@@ -601,7 +601,7 @@ public class ScreenGroupController {
     /** POST /api/screen-groups/sync/all */
     @PostMapping("/sync/all")
     public ResponseEntity<ApiResponse<Map<String, Object>>> syncAllCompanies(
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("user_id") String userId) {
         try {
             return ResponseEntity.ok(ApiResponse.success(service.syncAllCompanies(userId)));
         } catch (Exception e) {
@@ -619,12 +619,12 @@ public class ScreenGroupController {
     @GetMapping("/pop/groups")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getPopScreenGroups(
             @RequestParam(required = false) String filterCompanyCode,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             String effectiveCompanyCode = ("*".equals(companyCode) && filterCompanyCode != null)
                     ? filterCompanyCode : companyCode;
             Map<String, Object> params = new HashMap<>();
-            params.put("companyCode", effectiveCompanyCode);
+            params.put("company_code", effectiveCompanyCode);
             return ResponseEntity.ok(ApiResponse.success(service.getPopScreenGroups(params)));
         } catch (Exception e) {
             log.error("POP 화면 그룹 목록 조회 실패", e);
@@ -637,10 +637,10 @@ public class ScreenGroupController {
     @PostMapping("/pop/groups")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createPopScreenGroup(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        body.put("userCompanyCode", companyCode);
-        body.put("userId",          userId);
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        body.put("user_company_code", companyCode);
+        body.put("user_id",          userId);
         try {
             return ResponseEntity.status(HttpStatus.CREATED)
                     .body(ApiResponse.success(service.createPopScreenGroup(body)));
@@ -662,11 +662,11 @@ public class ScreenGroupController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updatePopScreenGroup(
             @PathVariable Integer id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         body.put("id",          id);
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.ok(ApiResponse.success(service.updatePopScreenGroup(body)));
         } catch (NoSuchElementException e) {
@@ -686,12 +686,12 @@ public class ScreenGroupController {
     @DeleteMapping("/pop/groups/{id}")
     public ResponseEntity<ApiResponse<Void>> deletePopScreenGroup(
             @PathVariable Integer id,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         Map<String, Object> params = new HashMap<>();
         params.put("id",          id);
-        params.put("companyCode", companyCode);
-        params.put("userId",      userId);
+        params.put("company_code", companyCode);
+        params.put("user_id",      userId);
         try {
             service.deletePopScreenGroup(params);
             return ResponseEntity.ok(ApiResponse.success(null, "POP 화면 그룹이 삭제되었습니다"));
@@ -715,12 +715,12 @@ public class ScreenGroupController {
     @PostMapping("/pop/ensure-root")
     public ResponseEntity<ApiResponse<Map<String, Object>>> ensurePopRootGroup(
             @RequestBody(required = false) Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("companyCode", companyCode);
-            params.put("userId",      userId);
+            params.put("company_code", companyCode);
+            params.put("user_id",      userId);
             if (body != null) params.putAll(body);
             Map<String, Object> result = service.ensurePopRootGroup(params);
             return ResponseEntity.ok(ApiResponse.success(result));
diff --git a/backend-spring/src/main/java/com/erp/controller/ScreenManagementController.java b/backend-spring/src/main/java/com/erp/controller/ScreenManagementController.java
index a2e8c89f..cd8a0984 100644
--- a/backend-spring/src/main/java/com/erp/controller/ScreenManagementController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ScreenManagementController.java
@@ -24,11 +24,11 @@ public class ScreenManagementController {
 
     @GetMapping("/screens")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getScreens(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", params.getOrDefault("companyCode", companyCode));
+        params.put("company_code", params.getOrDefault("company_code", companyCode));
         // 권한 확인: 최고 관리자가 아니면 자사 companyCode만 허용
-        String targetCode = (String) params.get("companyCode");
+        String targetCode = (String) params.get("company_code");
         if (!"*".equals(companyCode) && !companyCode.equals(targetCode)) {
             return ResponseEntity.status(403)
                     .body(ApiResponse.error("다른 회사의 화면을 조회할 권한이 없습니다."));
@@ -38,7 +38,7 @@ public class ScreenManagementController {
 
     @GetMapping("/screens/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getScreen(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable("id") Integer screenId) {
         Map<String, Object> screen = service.getScreenById(screenId);
         if (screen == null) {
@@ -49,7 +49,7 @@ public class ScreenManagementController {
 
     @GetMapping("/screens/{id}/menu")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getScreenMenu(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable("id") Integer screenId) {
         Map<String, Object> menuInfo = service.getMenuByScreen(screenId, companyCode);
         return ResponseEntity.ok(ApiResponse.success(menuInfo));
@@ -59,8 +59,8 @@ public class ScreenManagementController {
 
     @PostMapping("/screens")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createScreen(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
         try {
             Map<String, Object> screen = service.createScreen(body, companyCode, userId);
@@ -75,8 +75,8 @@ public class ScreenManagementController {
 
     @PutMapping("/screens/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateScreen(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable("id") Integer screenId,
             @RequestBody Map<String, Object> body) {
         try {
@@ -91,8 +91,8 @@ public class ScreenManagementController {
 
     @PutMapping("/screens/{id}/info")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateScreenInfo(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable("id") Integer screenId,
             @RequestBody Map<String, Object> body) {
         try {
@@ -107,10 +107,10 @@ public class ScreenManagementController {
 
     @PatchMapping("/screens/{screenId}/table-name")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateScreenTableName(
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @PathVariable Integer screenId,
             @RequestBody Map<String, Object> body) {
-        String tableName = (String) body.get("tableName");
+        String tableName = (String) body.get("table_name");
         Map<String, Object> screen = service.updateScreenTableName(screenId, tableName, userId);
         if (screen == null) return ResponseEntity.status(404).body(ApiResponse.error("화면을 찾을 수 없습니다."));
         return ResponseEntity.ok(ApiResponse.success(screen));
@@ -120,7 +120,7 @@ public class ScreenManagementController {
 
     @GetMapping("/screens/{id}/dependencies")
     public ResponseEntity<ApiResponse<Map<String, Object>>> checkScreenDependencies(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable("id") Integer screenId) {
         Map<String, Object> deps = service.checkScreenDependencies(screenId, companyCode);
         return ResponseEntity.ok(ApiResponse.success(deps));
@@ -128,7 +128,7 @@ public class ScreenManagementController {
 
     @GetMapping("/screens/{id}/linked-modals")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> detectLinkedScreens(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable("id") Integer screenId) {
         List<Map<String, Object>> linked = service.detectLinkedScreens(screenId, companyCode);
         return ResponseEntity.ok(ApiResponse.success(linked));
@@ -138,8 +138,8 @@ public class ScreenManagementController {
 
     @DeleteMapping("/screens/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteScreen(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable("id") Integer screenId,
             @RequestParam(required = false) String deleteReason) {
         try {
@@ -153,11 +153,11 @@ public class ScreenManagementController {
 
     @DeleteMapping("/screens/bulk/delete")
     public ResponseEntity<ApiResponse<Void>> bulkDeleteScreens(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
         @SuppressWarnings("unchecked")
-        List<Integer> screenIds = (List<Integer>) body.get("screenIds");
+        List<Integer> screenIds = (List<Integer>) body.get("screen_ids");
         try {
             service.bulkSoftDeleteScreens(screenIds, userId, companyCode);
             return ResponseEntity.ok(ApiResponse.success(null, screenIds.size() + "개 화면이 삭제되었습니다."));
@@ -171,24 +171,24 @@ public class ScreenManagementController {
 
     @PostMapping("/screens/check-duplicate-name")
     public ResponseEntity<ApiResponse<Map<String, Object>>> checkDuplicateScreenName(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        String screenName = (String) body.get("screenName");
-        String targetCode = body.containsKey("companyCode") ? (String) body.get("companyCode") : companyCode;
+        String screenName = (String) body.get("screen_name");
+        String targetCode = body.containsKey("company_code") ? (String) body.get("company_code") : companyCode;
         boolean isDuplicate = service.checkDuplicateScreenName(screenName, targetCode);
-        return ResponseEntity.ok(ApiResponse.success(Map.of("isDuplicate", isDuplicate)));
+        return ResponseEntity.ok(ApiResponse.success(Map.of("is_duplicate", isDuplicate)));
     }
 
     // ─── 복사 ──────────────────────────────────────────────────
 
     @PostMapping("/screens/{id}/copy")
     public ResponseEntity<ApiResponse<Map<String, Object>>> copyScreen(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable("id") Integer screenId,
             @RequestBody(required = false) Map<String, Object> body) {
         try {
-            String newName = body != null ? (String) body.get("newName") : null;
+            String newName = body != null ? (String) body.get("new_name") : null;
             Map<String, Object> screen = service.copyScreen(screenId, newName, companyCode, userId);
             return ResponseEntity.status(201).body(ApiResponse.success(screen, "화면이 복사되었습니다."));
         } catch (IllegalArgumentException e) {
@@ -201,8 +201,8 @@ public class ScreenManagementController {
 
     @PostMapping("/screens/{id}/copy-with-modals")
     public ResponseEntity<ApiResponse<Map<String, Object>>> copyScreenWithModals(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable("id") Integer screenId,
             @RequestBody Map<String, Object> body) {
         try {
@@ -218,9 +218,9 @@ public class ScreenManagementController {
 
     @GetMapping("/screens/trash/list")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getDeletedScreens(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         Map<String, Object> result = service.getDeletedScreens(params);
         @SuppressWarnings("unchecked")
         List<Map<String, Object>> list = (List<Map<String, Object>>) result.get("data");
@@ -229,8 +229,8 @@ public class ScreenManagementController {
 
     @PostMapping("/screens/{id}/restore")
     public ResponseEntity<ApiResponse<Map<String, Object>>> restoreScreen(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable("id") Integer screenId) {
         try {
             Map<String, Object> screen = service.restoreScreen(screenId, userId, companyCode);
@@ -261,7 +261,7 @@ public class ScreenManagementController {
     public ResponseEntity<ApiResponse<Void>> bulkPermanentDeleteScreens(
             @RequestBody Map<String, Object> body) {
         @SuppressWarnings("unchecked")
-        List<Integer> screenIds = (List<Integer>) body.get("screenIds");
+        List<Integer> screenIds = (List<Integer>) body.get("screen_ids");
         try {
             service.bulkPermanentDeleteScreens(screenIds);
             return ResponseEntity.ok(ApiResponse.success(null, screenIds.size() + "개 화면이 영구 삭제되었습니다."));
@@ -278,7 +278,7 @@ public class ScreenManagementController {
             @PathVariable String companyCode) {
         try {
             String code = service.generateScreenCode(companyCode);
-            return ResponseEntity.ok(ApiResponse.success(Map.of("screenCode", code)));
+            return ResponseEntity.ok(ApiResponse.success(Map.of("screen_code", code)));
         } catch (Exception e) {
             log.error("화면 코드 생성 실패", e);
             return ResponseEntity.status(500).body(ApiResponse.error("화면 코드 생성에 실패했습니다."));
@@ -288,11 +288,11 @@ public class ScreenManagementController {
     @PostMapping("/generate-screen-codes")
     public ResponseEntity<ApiResponse<Map<String, Object>>> generateMultipleScreenCodes(
             @RequestBody Map<String, Object> body) {
-        String companyCode = (String) body.get("companyCode");
+        String companyCode = (String) body.get("company_code");
         int count = body.get("count") != null ? Integer.parseInt(body.get("count").toString()) : 1;
         try {
             List<String> codes = service.generateMultipleScreenCodes(companyCode, count);
-            return ResponseEntity.ok(ApiResponse.success(Map.of("screenCodes", codes)));
+            return ResponseEntity.ok(ApiResponse.success(Map.of("screen_codes", codes)));
         } catch (Exception e) {
             log.error("화면 코드 일괄 생성 실패", e);
             return ResponseEntity.status(500).body(ApiResponse.error("화면 코드 생성에 실패했습니다."));
@@ -316,7 +316,7 @@ public class ScreenManagementController {
 
     @GetMapping("/tables/{tableName}/columns")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTableColumns(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName) {
         return ResponseEntity.ok(ApiResponse.success(service.getTableColumns(tableName, companyCode)));
     }
@@ -325,7 +325,7 @@ public class ScreenManagementController {
 
     @PostMapping("/screens/{screenId}/layout")
     public ResponseEntity<ApiResponse<Void>> saveLayout(
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @PathVariable Integer screenId,
             @RequestBody Map<String, Object> body) {
         @SuppressWarnings("unchecked")
@@ -342,14 +342,14 @@ public class ScreenManagementController {
 
     @GetMapping("/screens/{screenId}/layout")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getLayout(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId) {
         return ResponseEntity.ok(ApiResponse.success(service.getLayout(screenId, companyCode)));
     }
 
     @GetMapping("/screens/{screenId}/layout-v1")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getLayoutV1(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId) {
         Map<String, Object> result = service.getLayoutV1WithTransform(screenId, companyCode);
         if (result == null) {
@@ -362,7 +362,7 @@ public class ScreenManagementController {
 
     @GetMapping("/screens/{screenId}/layout-v2")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getLayoutV2(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId,
             @RequestParam(required = false) Integer layerId) {
         Map<String, Object> layout = service.getLayoutV2(screenId, companyCode, layerId);
@@ -371,8 +371,8 @@ public class ScreenManagementController {
 
     @PostMapping("/screens/{screenId}/layout-v2")
     public ResponseEntity<ApiResponse<Void>> saveLayoutV2(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable Integer screenId,
             @RequestBody Map<String, Object> body) {
         try {
@@ -388,15 +388,15 @@ public class ScreenManagementController {
 
     @GetMapping("/screens/{screenId}/layout-pop")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getLayoutPop(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId) {
         return ResponseEntity.ok(ApiResponse.success(service.getLayoutPop(screenId, companyCode)));
     }
 
     @PostMapping("/screens/{screenId}/layout-pop")
     public ResponseEntity<ApiResponse<Void>> saveLayoutPop(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable Integer screenId,
             @RequestBody Map<String, Object> body) {
         try {
@@ -410,7 +410,7 @@ public class ScreenManagementController {
 
     @DeleteMapping("/screens/{screenId}/layout-pop")
     public ResponseEntity<ApiResponse<Void>> deleteLayoutPop(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId) {
         service.deleteLayoutPop(screenId, companyCode);
         return ResponseEntity.ok(ApiResponse.success(null, "POP 레이아웃이 삭제되었습니다."));
@@ -418,7 +418,7 @@ public class ScreenManagementController {
 
     @GetMapping("/pop-layout-screen-ids")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getScreenIdsWithPopLayout(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(service.getScreenIdsWithPopLayout(companyCode)));
     }
 
@@ -426,14 +426,14 @@ public class ScreenManagementController {
 
     @GetMapping("/screens/{screenId}/layers")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getScreenLayers(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId) {
         return ResponseEntity.ok(ApiResponse.success(service.getScreenLayers(screenId, companyCode)));
     }
 
     @GetMapping("/screens/{screenId}/layers/{layerId}/layout")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getLayerLayout(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId,
             @PathVariable Integer layerId) {
         Map<String, Object> layout = service.getLayerLayout(screenId, layerId, companyCode);
@@ -442,7 +442,7 @@ public class ScreenManagementController {
 
     @DeleteMapping("/screens/{screenId}/layers/{layerId}")
     public ResponseEntity<ApiResponse<Void>> deleteLayer(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId,
             @PathVariable Integer layerId) {
         boolean deleted = service.deleteLayer(screenId, layerId, companyCode);
@@ -452,7 +452,7 @@ public class ScreenManagementController {
 
     @PutMapping("/screens/{screenId}/layers/{layerId}/condition")
     public ResponseEntity<ApiResponse<Void>> updateLayerCondition(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId,
             @PathVariable Integer layerId,
             @RequestBody Map<String, Object> body) {
@@ -464,14 +464,14 @@ public class ScreenManagementController {
 
     @GetMapping("/screens/{screenId}/zones")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getScreenZones(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId) {
         return ResponseEntity.ok(ApiResponse.success(service.getScreenZones(screenId, companyCode)));
     }
 
     @PostMapping("/screens/{screenId}/zones")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createZone(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId,
             @RequestBody Map<String, Object> body) {
         try {
@@ -485,7 +485,7 @@ public class ScreenManagementController {
 
     @PutMapping("/zones/{zoneId}")
     public ResponseEntity<ApiResponse<Void>> updateZone(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer zoneId,
             @RequestBody Map<String, Object> body) {
         boolean updated = service.updateZone(zoneId, body, companyCode);
@@ -495,7 +495,7 @@ public class ScreenManagementController {
 
     @DeleteMapping("/zones/{zoneId}")
     public ResponseEntity<ApiResponse<Void>> deleteZone(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer zoneId) {
         boolean deleted = service.deleteZone(zoneId, companyCode);
         if (!deleted) return ResponseEntity.status(404).body(ApiResponse.error("Zone을 찾을 수 없습니다."));
@@ -504,7 +504,7 @@ public class ScreenManagementController {
 
     @PostMapping("/screens/{screenId}/zones/{zoneId}/layers")
     public ResponseEntity<ApiResponse<Map<String, Object>>> addLayerToZone(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId,
             @PathVariable Integer zoneId,
             @RequestBody(required = false) Map<String, Object> body) {
@@ -522,8 +522,8 @@ public class ScreenManagementController {
 
     @PostMapping("/screens/{screenId}/assign-menu")
     public ResponseEntity<ApiResponse<Map<String, Object>>> assignScreenToMenu(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable Integer screenId,
             @RequestBody Map<String, Object> body) {
         try {
@@ -539,14 +539,14 @@ public class ScreenManagementController {
 
     @GetMapping("/menus/{menuObjid}/screens")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getScreensByMenu(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer menuObjid) {
         return ResponseEntity.ok(ApiResponse.success(service.getScreensByMenu(menuObjid, companyCode)));
     }
 
     @DeleteMapping("/screens/{screenId}/menus/{menuObjid}")
     public ResponseEntity<ApiResponse<Void>> unassignScreenFromMenu(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId,
             @PathVariable Integer menuObjid) {
         try {
@@ -644,14 +644,14 @@ public class ScreenManagementController {
 
     @GetMapping("/screens/{screenId}/pop-links")
     public ResponseEntity<ApiResponse<Map<String, Object>>> analyzePopScreenLinks(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Integer screenId) {
         return ResponseEntity.ok(ApiResponse.success(service.analyzePopScreenLinks(screenId, companyCode)));
     }
 
     @PostMapping("/deploy-pop-screens")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deployPopScreens(
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
         try {
             Map<String, Object> result = service.deployPopScreens(body, userId);
diff --git a/backend-spring/src/main/java/com/erp/controller/ShippingOrderController.java b/backend-spring/src/main/java/com/erp/controller/ShippingOrderController.java
index 41468f47..33145305 100644
--- a/backend-spring/src/main/java/com/erp/controller/ShippingOrderController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ShippingOrderController.java
@@ -21,59 +21,59 @@ public class ShippingOrderController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(shippingOrderService.getShippingOrderList(params)));
     }
 
     @GetMapping("/preview-no")
     public ResponseEntity<ApiResponse<Map<String, Object>>> previewNextNo(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(shippingOrderService.previewNextNo(params)));
     }
 
     @PostMapping("/save")
     public ResponseEntity<ApiResponse<Map<String, Object>>> save(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("userId", userId);
+        body.put("company_code", companyCode);
+        body.put("user_id", userId);
         return ResponseEntity.ok(ApiResponse.success(shippingOrderService.save(body)));
     }
 
     @PostMapping("/delete")
     public ResponseEntity<ApiResponse<Map<String, Object>>> remove(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(shippingOrderService.remove(body)));
     }
 
     @GetMapping("/source/shipment-plan")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getShipmentPlanSource(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(shippingOrderService.getShipmentPlanSource(params)));
     }
 
     @GetMapping("/source/sales-order")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getSalesOrderSource(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(shippingOrderService.getSalesOrderSource(params)));
     }
 
     @GetMapping("/source/item")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getItemSource(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(shippingOrderService.getItemSource(params)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/ShippingPlanController.java b/backend-spring/src/main/java/com/erp/controller/ShippingPlanController.java
index e778928c..bbeb1d76 100644
--- a/backend-spring/src/main/java/com/erp/controller/ShippingPlanController.java
+++ b/backend-spring/src/main/java/com/erp/controller/ShippingPlanController.java
@@ -19,66 +19,66 @@ public class ShippingPlanController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getShippingPlanList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(shippingPlanService.getShippingPlanList(params)));
     }
 
     @GetMapping("/aggregate")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getAggregate(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(shippingPlanService.getAggregate(params)));
     }
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getShippingPlanInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(shippingPlanService.getShippingPlanInfo(params)));
     }
 
     @PostMapping("/batch")
     public ResponseEntity<ApiResponse<Map<String, Object>>> batchSave(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("userId", userId);
+        body.put("company_code", companyCode);
+        body.put("user_id", userId);
         return ResponseEntity.ok(ApiResponse.success(shippingPlanService.batchSave(body)));
     }
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertShippingPlan(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(shippingPlanService.insertShippingPlan(body)));
     }
 
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateShippingPlan(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
-        body.put("updatedBy", userId);
+        body.put("company_code", companyCode);
+        body.put("updated_by", userId);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(shippingPlanService.updateShippingPlan(body)));
     }
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteShippingPlan(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(shippingPlanService.deleteShippingPlan(params)));
     }
diff --git a/backend-spring/src/main/java/com/erp/controller/SystemNoticeController.java b/backend-spring/src/main/java/com/erp/controller/SystemNoticeController.java
index 5f7bf88c..e7fef069 100644
--- a/backend-spring/src/main/java/com/erp/controller/SystemNoticeController.java
+++ b/backend-spring/src/main/java/com/erp/controller/SystemNoticeController.java
@@ -26,9 +26,9 @@ public class SystemNoticeController {
      */
     @GetMapping
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getSystemNoticeList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> queryParams) {
-        queryParams.put("companyCode", companyCode);
+        queryParams.put("company_code", companyCode);
         List<Map<String, Object>> list = systemNoticeService.getSystemNoticeList(queryParams);
         return ResponseEntity.ok(ApiResponse.success(list));
     }
@@ -40,8 +40,8 @@ public class SystemNoticeController {
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertSystemNotice(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
 
         String title = (String) body.get("title");
         String content = (String) body.get("content");
@@ -54,8 +54,8 @@ public class SystemNoticeController {
         }
 
         Map<String, Object> params = new HashMap<>(body);
-        params.put("companyCode", companyCode);
-        params.put("createdBy", userId);
+        params.put("company_code", companyCode);
+        params.put("created_by", userId);
 
         try {
             Map<String, Object> created = systemNoticeService.insertSystemNotice(params);
@@ -75,7 +75,7 @@ public class SystemNoticeController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateSystemNotice(
             @PathVariable Long id,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         String title = (String) body.get("title");
         String content = (String) body.get("content");
@@ -89,7 +89,7 @@ public class SystemNoticeController {
 
         Map<String, Object> params = new HashMap<>(body);
         params.put("id", id);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
 
         try {
             Map<String, Object> updated = systemNoticeService.updateSystemNotice(params);
@@ -109,11 +109,11 @@ public class SystemNoticeController {
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Void>> deleteSystemNotice(
             @PathVariable Long id,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         Map<String, Object> params = new HashMap<>();
         params.put("id", id);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
 
         try {
             systemNoticeService.deleteSystemNotice(params);
diff --git a/backend-spring/src/main/java/com/erp/controller/TableCategoryValueController.java b/backend-spring/src/main/java/com/erp/controller/TableCategoryValueController.java
index f43c4f97..ba47099b 100644
--- a/backend-spring/src/main/java/com/erp/controller/TableCategoryValueController.java
+++ b/backend-spring/src/main/java/com/erp/controller/TableCategoryValueController.java
@@ -27,10 +27,10 @@ public class TableCategoryValueController {
     /** GET /api/table-categories/all-columns */
     @GetMapping("/all-columns")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getAllCategoryColumns(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("companyCode", companyCode);
+            params.put("company_code", companyCode);
             return ResponseEntity.ok(ApiResponse.success(service.getAllCategoryColumns(params)));
         } catch (Exception e) {
             log.error("전체 카테고리 컬럼 조회 실패", e);
@@ -43,11 +43,11 @@ public class TableCategoryValueController {
     @GetMapping("/{tableName}/columns")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCategoryColumns(
             @PathVariable String tableName,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("tableName",   tableName);
-            params.put("companyCode", companyCode);
+            params.put("table_name",   tableName);
+            params.put("company_code", companyCode);
             return ResponseEntity.ok(ApiResponse.success(service.getCategoryColumns(params)));
         } catch (Exception e) {
             log.error("카테고리 컬럼 조회 실패: tableName={}", tableName, e);
@@ -68,18 +68,18 @@ public class TableCategoryValueController {
             @RequestParam(required = false) String menuObjid,
             @RequestParam(required = false, defaultValue = "false") boolean includeInactive,
             @RequestParam(required = false) String filterCompanyCode,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             // SUPER_ADMIN 이 특정 회사 기준 필터링 요청 시 해당 companyCode 사용
             String effectiveCompanyCode = ("*".equals(companyCode) && filterCompanyCode != null)
                     ? filterCompanyCode : companyCode;
 
             Map<String, Object> params = new HashMap<>();
-            params.put("tableName",       tableName);
-            params.put("columnName",      columnName);
-            params.put("companyCode",     effectiveCompanyCode);
-            params.put("includeInactive", includeInactive);
-            if (menuObjid != null) params.put("menuObjid", Long.parseLong(menuObjid));
+            params.put("table_name",       tableName);
+            params.put("column_name",      columnName);
+            params.put("company_code",     effectiveCompanyCode);
+            params.put("include_inactive", includeInactive);
+            if (menuObjid != null) params.put("menu_objid", Long.parseLong(menuObjid));
 
             return ResponseEntity.ok(ApiResponse.success(service.getCategoryValues(params)));
         } catch (Exception e) {
@@ -97,13 +97,13 @@ public class TableCategoryValueController {
     @PostMapping("/values")
     public ResponseEntity<ApiResponse<Map<String, Object>>> addCategoryValue(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        if (body.get("menuObjid") == null) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        if (body.get("menu_objid") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("menuObjid는 필수입니다"));
         }
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             return ResponseEntity.status(HttpStatus.CREATED)
                     .body(ApiResponse.success(service.addCategoryValue(body)));
@@ -121,11 +121,11 @@ public class TableCategoryValueController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateCategoryValue(
             @PathVariable Long valueId,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        body.put("valueId",    valueId);
-        body.put("companyCode", companyCode);
-        body.put("userId",     userId);
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        body.put("value_id",    valueId);
+        body.put("company_code", companyCode);
+        body.put("user_id",     userId);
         try {
             return ResponseEntity.ok(ApiResponse.success(service.updateCategoryValue(body)));
         } catch (IllegalArgumentException e) {
@@ -140,12 +140,12 @@ public class TableCategoryValueController {
     @DeleteMapping("/values/{valueId}")
     public ResponseEntity<ApiResponse<Void>> deleteCategoryValue(
             @PathVariable Long valueId,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("valueId",   valueId);
-        params.put("companyCode", companyCode);
-        params.put("userId",    userId);
+        params.put("value_id",   valueId);
+        params.put("company_code", companyCode);
+        params.put("user_id",    userId);
         try {
             service.deleteCategoryValue(params);
             return ResponseEntity.ok(ApiResponse.success(null, "카테고리 값이 삭제되었습니다"));
@@ -166,14 +166,14 @@ public class TableCategoryValueController {
     @PostMapping("/values/bulk-delete")
     public ResponseEntity<ApiResponse<Void>> bulkDeleteCategoryValues(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        Object rawIds = body.get("valueIds");
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        Object rawIds = body.get("value_ids");
         if (!(rawIds instanceof List) || ((List<?>) rawIds).isEmpty()) {
             return ResponseEntity.status(400).body(ApiResponse.error("삭제할 값 ID 목록이 필요합니다"));
         }
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         try {
             service.bulkDeleteCategoryValues(body);
             int count = ((List<?>) rawIds).size();
@@ -189,12 +189,12 @@ public class TableCategoryValueController {
     @PostMapping("/values/reorder")
     public ResponseEntity<ApiResponse<Void>> reorderCategoryValues(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
-        Object rawIds = body.get("orderedValueIds");
+            @RequestAttribute("company_code") String companyCode) {
+        Object rawIds = body.get("ordered_value_ids");
         if (!(rawIds instanceof List) || ((List<?>) rawIds).isEmpty()) {
             return ResponseEntity.status(400).body(ApiResponse.error("순서 정보가 필요합니다"));
         }
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         try {
             service.reorderCategoryValues(body);
             return ResponseEntity.ok(ApiResponse.success(null, "카테고리 값 순서가 변경되었습니다"));
@@ -212,12 +212,12 @@ public class TableCategoryValueController {
     @PostMapping("/labels-by-codes")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCategoryLabelsByCodes(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
-        Object rawCodes = body.get("valueCodes");
+            @RequestAttribute("company_code") String companyCode) {
+        Object rawCodes = body.get("value_codes");
         if (!(rawCodes instanceof List) || ((List<?>) rawCodes).isEmpty()) {
             return ResponseEntity.ok(ApiResponse.success(new java.util.LinkedHashMap<>()));
         }
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         try {
             return ResponseEntity.ok(ApiResponse.success(service.getCategoryLabelsByCodes(body)));
         } catch (Exception e) {
@@ -233,10 +233,10 @@ public class TableCategoryValueController {
     /** GET /api/table-categories/second-level-menus */
     @GetMapping("/second-level-menus")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getSecondLevelMenus(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("companyCode", companyCode);
+            params.put("company_code", companyCode);
             return ResponseEntity.ok(ApiResponse.success(service.getSecondLevelMenus(params)));
         } catch (Exception e) {
             log.error("2레벨 메뉴 목록 조회 실패", e);
@@ -253,12 +253,12 @@ public class TableCategoryValueController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> getColumnMapping(
             @PathVariable String tableName,
             @PathVariable Long menuObjid,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("tableName",   tableName);
-            params.put("menuObjid",   menuObjid);
-            params.put("companyCode", companyCode);
+            params.put("table_name",   tableName);
+            params.put("menu_objid",   menuObjid);
+            params.put("company_code", companyCode);
             return ResponseEntity.ok(ApiResponse.success(service.getColumnMapping(params)));
         } catch (Exception e) {
             log.error("컬럼 매핑 조회 실패: tableName={}, menuObjid={}", tableName, menuObjid, e);
@@ -271,12 +271,12 @@ public class TableCategoryValueController {
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getLogicalColumns(
             @PathVariable String tableName,
             @PathVariable Long menuObjid,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("tableName",   tableName);
-            params.put("menuObjid",   menuObjid);
-            params.put("companyCode", companyCode);
+            params.put("table_name",   tableName);
+            params.put("menu_objid",   menuObjid);
+            params.put("company_code", companyCode);
             return ResponseEntity.ok(ApiResponse.success(service.getLogicalColumns(params)));
         } catch (Exception e) {
             log.error("논리적 컬럼 목록 조회 실패: tableName={}, menuObjid={}", tableName, menuObjid, e);
@@ -288,12 +288,12 @@ public class TableCategoryValueController {
     @PostMapping("/column-mapping")
     public ResponseEntity<ApiResponse<Map<String, Object>>> createColumnMapping(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
-        String tableName          = (String) body.get("tableName");
-        String logicalColumnName  = (String) body.get("logicalColumnName");
-        String physicalColumnName = (String) body.get("physicalColumnName");
-        Object menuObjid          = body.get("menuObjid");
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
+        String tableName          = (String) body.get("table_name");
+        String logicalColumnName  = (String) body.get("logical_column_name");
+        String physicalColumnName = (String) body.get("physical_column_name");
+        Object menuObjid          = body.get("menu_objid");
 
         if (tableName == null || logicalColumnName == null
                 || physicalColumnName == null || menuObjid == null) {
@@ -301,10 +301,10 @@ public class TableCategoryValueController {
                     "tableName, logicalColumnName, physicalColumnName, menuObjid는 필수입니다"));
         }
 
-        body.put("companyCode", companyCode);
-        body.put("userId",      userId);
+        body.put("company_code", companyCode);
+        body.put("user_id",      userId);
         // menuObjid를 Long으로 보장
-        body.put("menuObjid", toLong(menuObjid));
+        body.put("menu_objid", toLong(menuObjid));
 
         try {
             return ResponseEntity.status(HttpStatus.CREATED)
@@ -326,15 +326,15 @@ public class TableCategoryValueController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteColumnMappingsByColumn(
             @PathVariable String tableName,
             @PathVariable String columnName,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("tableName",   tableName);
-            params.put("columnName",  columnName);
-            params.put("companyCode", companyCode);
+            params.put("table_name",   tableName);
+            params.put("column_name",  columnName);
+            params.put("company_code", companyCode);
             int deleted = service.deleteColumnMappingsByColumn(params);
             Map<String, Object> data = new HashMap<>();
-            data.put("deletedCount", deleted);
+            data.put("deleted_count", deleted);
             return ResponseEntity.ok(ApiResponse.success(data,
                     deleted + "개의 컬럼 매핑이 삭제되었습니다"));
         } catch (Exception e) {
@@ -347,10 +347,10 @@ public class TableCategoryValueController {
     @DeleteMapping("/column-mapping/{mappingId}")
     public ResponseEntity<ApiResponse<Void>> deleteColumnMapping(
             @PathVariable Long mappingId,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("mappingId",  mappingId);
-        params.put("companyCode", companyCode);
+        params.put("mapping_id",  mappingId);
+        params.put("company_code", companyCode);
         try {
             service.deleteColumnMapping(params);
             return ResponseEntity.ok(ApiResponse.success(null, "컬럼 매핑이 삭제되었습니다"));
diff --git a/backend-spring/src/main/java/com/erp/controller/TableHistoryController.java b/backend-spring/src/main/java/com/erp/controller/TableHistoryController.java
index fb82bb06..c71c956b 100644
--- a/backend-spring/src/main/java/com/erp/controller/TableHistoryController.java
+++ b/backend-spring/src/main/java/com/erp/controller/TableHistoryController.java
@@ -29,12 +29,12 @@ public class TableHistoryController {
      */
     @GetMapping("/{tableName}/check")
     public ResponseEntity<ApiResponse<Map<String, Object>>> checkHistoryTableExists(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName) {
 
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName",   tableName);
-        params.put("companyCode", companyCode);
+        params.put("table_name",   tableName);
+        params.put("company_code", companyCode);
 
         Map<String, Object> data    = tableHistoryService.checkHistoryTableExists(params);
         String              message = (String) data.remove("_message");
@@ -47,12 +47,12 @@ public class TableHistoryController {
      */
     @GetMapping("/{tableName}/summary")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getTableHistorySummary(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName) {
 
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName",   tableName);
-        params.put("companyCode", companyCode);
+        params.put("table_name",   tableName);
+        params.put("company_code", companyCode);
 
         try {
             List<Map<String, Object>> data = tableHistoryService.getTableHistorySummary(params);
@@ -71,12 +71,12 @@ public class TableHistoryController {
      */
     @GetMapping("/{tableName}/all")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getAllTableHistory(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @RequestParam Map<String, Object> queryParams) {
 
-        queryParams.put("tableName",   tableName);
-        queryParams.put("companyCode", companyCode);
+        queryParams.put("table_name",   tableName);
+        queryParams.put("company_code", companyCode);
 
         try {
             Map<String, Object> data = tableHistoryService.getAllTableHistory(queryParams);
@@ -95,14 +95,14 @@ public class TableHistoryController {
      */
     @GetMapping("/{tableName}/{recordId}/timeline")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getRecordTimeline(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @PathVariable String recordId) {
 
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName",   tableName);
-        params.put("recordId",    recordId);
-        params.put("companyCode", companyCode);
+        params.put("table_name",   tableName);
+        params.put("record_id",    recordId);
+        params.put("company_code", companyCode);
 
         try {
             List<Map<String, Object>> data = tableHistoryService.getRecordTimeline(params);
@@ -121,14 +121,14 @@ public class TableHistoryController {
      */
     @GetMapping("/{tableName}/{recordId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getRecordHistory(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tableName,
             @PathVariable String recordId,
             @RequestParam Map<String, Object> queryParams) {
 
-        queryParams.put("tableName",   tableName);
-        queryParams.put("recordId",    recordId);
-        queryParams.put("companyCode", companyCode);
+        queryParams.put("table_name",   tableName);
+        queryParams.put("record_id",    recordId);
+        queryParams.put("company_code", companyCode);
 
         try {
             Map<String, Object> data = tableHistoryService.getRecordHistory(queryParams);
diff --git a/backend-spring/src/main/java/com/erp/controller/TableManagementController.java b/backend-spring/src/main/java/com/erp/controller/TableManagementController.java
index 264a7915..76346b8a 100644
--- a/backend-spring/src/main/java/com/erp/controller/TableManagementController.java
+++ b/backend-spring/src/main/java/com/erp/controller/TableManagementController.java
@@ -38,7 +38,7 @@ public class TableManagementController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTableEntityRelations(
             @RequestParam String leftTable,
             @RequestParam String rightTable,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(
                 tableManagementService.getTableEntityRelations(leftTable, rightTable, companyCode)));
     }
@@ -53,7 +53,7 @@ public class TableManagementController {
             @PathVariable String tableName,
             @RequestParam(defaultValue = "1") int page,
             @RequestParam(defaultValue = "50") int size,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(
                 tableManagementService.getColumnList(tableName, page, size, companyCode),
                 "컬럼 목록을 성공적으로 조회했습니다."));
@@ -76,7 +76,7 @@ public class TableManagementController {
     public ResponseEntity<ApiResponse<Void>> updateTableLabel(
             @PathVariable String tableName,
             @RequestBody Map<String, Object> body) {
-        String displayName = (String) body.get("displayName");
+        String displayName = (String) body.get("display_name");
         String description = (String) body.get("description");
         if (displayName == null || displayName.isBlank()) {
             return ResponseEntity.status(400).body(ApiResponse.error("표시명이 필요합니다."));
@@ -105,7 +105,7 @@ public class TableManagementController {
             @PathVariable String tableName,
             @PathVariable String columnName,
             @RequestBody Map<String, Object> settings,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return doUpdateColumnSettings(tableName, columnName, settings, companyCode);
     }
 
@@ -115,7 +115,7 @@ public class TableManagementController {
             @PathVariable String tableName,
             @PathVariable String columnName,
             @RequestBody Map<String, Object> settings,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return doUpdateColumnSettings(tableName, columnName, settings, companyCode);
     }
 
@@ -136,7 +136,7 @@ public class TableManagementController {
     public ResponseEntity<ApiResponse<Void>> updateAllColumnSettingsPost(
             @PathVariable String tableName,
             @RequestBody List<Map<String, Object>> columnSettings,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return doUpdateAllColumnSettings(tableName, columnSettings, companyCode);
     }
 
@@ -145,7 +145,7 @@ public class TableManagementController {
     public ResponseEntity<ApiResponse<Void>> updateAllColumnSettingsBatch(
             @PathVariable String tableName,
             @RequestBody List<Map<String, Object>> columnSettings,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return doUpdateAllColumnSettings(tableName, columnSettings, companyCode);
     }
 
@@ -167,12 +167,12 @@ public class TableManagementController {
             @PathVariable String tableName,
             @PathVariable String columnName,
             @RequestBody Map<String, Object> body) {
-        String webType = (String) body.get("webType");
+        String webType = (String) body.get("web_type");
         if (webType == null || webType.isBlank()) {
             return ResponseEntity.status(400).body(ApiResponse.error("웹 타입이 필요합니다."));
         }
         @SuppressWarnings("unchecked")
-        Map<String, Object> detailSettings = (Map<String, Object>) body.get("detailSettings");
+        Map<String, Object> detailSettings = (Map<String, Object>) body.get("detail_settings");
         tableManagementService.updateColumnWebType(tableName, columnName, webType, detailSettings);
         return ResponseEntity.ok(ApiResponse.success(null, "컬럼 웹타입이 설정되었습니다."));
     }
@@ -183,13 +183,13 @@ public class TableManagementController {
             @PathVariable String tableName,
             @PathVariable String columnName,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
-        String inputType = (String) body.get("inputType");
+            @RequestAttribute("company_code") String companyCode) {
+        String inputType = (String) body.get("input_type");
         if (tableName == null || columnName == null || inputType == null || inputType.isBlank()) {
             return ResponseEntity.status(400).body(ApiResponse.error("테이블명, 컬럼명, 입력 타입이 모두 필요합니다."));
         }
         @SuppressWarnings("unchecked")
-        Map<String, Object> detailSettings = (Map<String, Object>) body.get("detailSettings");
+        Map<String, Object> detailSettings = (Map<String, Object>) body.get("detail_settings");
         tableManagementService.updateColumnInputType(tableName, columnName, inputType, companyCode, detailSettings);
         return ResponseEntity.ok(ApiResponse.success(null, "컬럼 입력 타입이 성공적으로 설정되었습니다."));
     }
@@ -219,7 +219,7 @@ public class TableManagementController {
     @GetMapping("/tables/{tableName}/web-types")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getColumnWebTypes(
             @PathVariable String tableName,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(
                 tableManagementService.getColumnInputTypes(tableName, companyCode),
                 "컬럼 입력타입 정보를 성공적으로 조회했습니다."));
@@ -257,8 +257,8 @@ public class TableManagementController {
     public ResponseEntity<ApiResponse<Void>> toggleTableIndex(
             @PathVariable String tableName,
             @RequestBody Map<String, Object> body) {
-        String columnName = (String) body.get("columnName");
-        String indexType = (String) body.get("indexType");
+        String columnName = (String) body.get("column_name");
+        String indexType = (String) body.get("index_type");
         String action = (String) body.get("action");
         if (tableName == null || columnName == null || indexType == null || action == null) {
             return ResponseEntity.status(400).body(ApiResponse.error(
@@ -281,7 +281,7 @@ public class TableManagementController {
             @PathVariable String tableName,
             @PathVariable String columnName,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Object nullableObj = body.get("nullable");
         if (tableName == null || columnName == null || !(nullableObj instanceof Boolean)) {
             return ResponseEntity.status(400).body(ApiResponse.error("tableName, columnName, nullable(boolean)이 필요합니다."));
@@ -299,7 +299,7 @@ public class TableManagementController {
             @PathVariable String tableName,
             @PathVariable String columnName,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Object uniqueObj = body.get("unique");
         if (tableName == null || columnName == null || !(uniqueObj instanceof Boolean)) {
             return ResponseEntity.status(400).body(ApiResponse.error("tableName, columnName, unique(boolean)이 필요합니다."));
@@ -330,9 +330,9 @@ public class TableManagementController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTableRecord(
             @PathVariable String tableName,
             @RequestBody Map<String, Object> body) {
-        String filterColumn = (String) body.get("filterColumn");
-        Object filterValue = body.get("filterValue");
-        String displayColumn = (String) body.get("displayColumn");
+        String filterColumn = (String) body.get("filter_column");
+        Object filterValue = body.get("filter_value");
+        String displayColumn = (String) body.get("display_column");
 
         if (filterColumn == null || filterValue == null) {
             return ResponseEntity.status(400).body(ApiResponse.error(
@@ -366,7 +366,7 @@ public class TableManagementController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> addTableData(
             @PathVariable String tableName,
             @RequestBody Map<String, Object> data,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         if (data == null || data.isEmpty()) {
             return ResponseEntity.status(400).body(ApiResponse.error("추가할 데이터가 필요합니다."));
         }
@@ -390,7 +390,7 @@ public class TableManagementController {
 
         Map<String, Object> result = tableManagementService.addTableData(tableName, data);
         return ResponseEntity.status(201).body(ApiResponse.success(
-                Map.of("id", result.getOrDefault("insertedId", "")),
+                Map.of("id", result.getOrDefault("inserted_id", "")),
                 "테이블 데이터를 성공적으로 추가했습니다."));
     }
 
@@ -399,11 +399,11 @@ public class TableManagementController {
     public ResponseEntity<ApiResponse<Void>> editTableData(
             @PathVariable String tableName,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         @SuppressWarnings("unchecked")
-        Map<String, Object> originalData = (Map<String, Object>) body.get("originalData");
+        Map<String, Object> originalData = (Map<String, Object>) body.get("original_data");
         @SuppressWarnings("unchecked")
-        Map<String, Object> updatedData = (Map<String, Object>) body.get("updatedData");
+        Map<String, Object> updatedData = (Map<String, Object>) body.get("updated_data");
 
         if (originalData == null || updatedData == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("원본 데이터와 수정할 데이터가 모두 필요합니다."));
@@ -459,8 +459,8 @@ public class TableManagementController {
             @PathVariable String tableName,
             @RequestBody Map<String, Object> body) {
         @SuppressWarnings("unchecked")
-        List<String> logColumns = (List<String>) body.get("logColumns");
-        boolean isActive = Boolean.TRUE.equals(body.get("isActive"));
+        List<String> logColumns = (List<String>) body.get("log_columns");
+        boolean isActive = Boolean.TRUE.equals(body.get("is_active"));
         tableManagementService.createLogTable(tableName, logColumns, isActive);
         return ResponseEntity.ok(ApiResponse.success(null, "로그 테이블이 생성되었습니다."));
     }
@@ -488,7 +488,7 @@ public class TableManagementController {
     public ResponseEntity<ApiResponse<Void>> toggleLogTable(
             @PathVariable String tableName,
             @RequestBody Map<String, Object> body) {
-        boolean isActive = Boolean.TRUE.equals(body.get("isActive"));
+        boolean isActive = Boolean.TRUE.equals(body.get("is_active"));
         tableManagementService.toggleLogTable(tableName, isActive);
         return ResponseEntity.ok(ApiResponse.success(null,
                 isActive ? "로그가 활성화되었습니다." : "로그가 비활성화되었습니다."));
@@ -501,7 +501,7 @@ public class TableManagementController {
     /** GET /api/table-management/category-columns */
     @GetMapping("/category-columns")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCategoryColumnsByCompany(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(
                 tableManagementService.getCategoryColumnsByCompany(companyCode)));
     }
@@ -509,7 +509,7 @@ public class TableManagementController {
     /** GET /api/table-management/numbering-columns */
     @GetMapping("/numbering-columns")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getNumberingColumnsByCompany(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(
                 tableManagementService.getNumberingColumnsByCompany(companyCode)));
     }
@@ -518,7 +518,7 @@ public class TableManagementController {
     @GetMapping("/menu/{menuObjid}/category-columns")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getCategoryColumnsByMenu(
             @PathVariable String menuObjid,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(
                 tableManagementService.getCategoryColumnsByMenu(companyCode, menuObjid)));
     }
@@ -531,7 +531,7 @@ public class TableManagementController {
     @GetMapping("/columns/{tableName}/referenced-by")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getReferencedByTables(
             @PathVariable String tableName,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(
                 tableManagementService.getReferencedByTables(tableName, companyCode)));
     }
@@ -544,7 +544,7 @@ public class TableManagementController {
     @PostMapping("/multi-table-save")
     public ResponseEntity<ApiResponse<Map<String, Object>>> multiTableSave(
             @RequestBody Map<String, Object> payload,
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(
                 tableManagementService.multiTableSave(payload, companyCode),
                 "다중 테이블 저장이 완료되었습니다."));
@@ -554,8 +554,8 @@ public class TableManagementController {
     @PostMapping("/validate-excel")
     public ResponseEntity<ApiResponse<Map<String, Object>>> validateExcelData(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("companyCode") String companyCode) {
-        String tableName = (String) body.get("tableName");
+            @RequestAttribute("company_code") String companyCode) {
+        String tableName = (String) body.get("table_name");
         @SuppressWarnings("unchecked")
         List<Map<String, Object>> rows = (List<Map<String, Object>>) body.get("rows");
         if (tableName == null || rows == null) {
diff --git a/backend-spring/src/main/java/com/erp/controller/TaxInvoiceController.java b/backend-spring/src/main/java/com/erp/controller/TaxInvoiceController.java
index 5d682617..64104b49 100644
--- a/backend-spring/src/main/java/com/erp/controller/TaxInvoiceController.java
+++ b/backend-spring/src/main/java/com/erp/controller/TaxInvoiceController.java
@@ -20,83 +20,83 @@ public class TaxInvoiceController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTaxInvoiceList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(taxInvoiceService.getTaxInvoiceList(params)));
     }
 
     @GetMapping("/stats/monthly")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMonthlyStats(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(taxInvoiceService.getMonthlyStats(params)));
     }
 
     @GetMapping("/stats/cost-type")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getCostTypeStats(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(taxInvoiceService.getCostTypeStats(params)));
     }
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTaxInvoiceInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(taxInvoiceService.getTaxInvoiceInfo(params)));
     }
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertTaxInvoice(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.status(201).body(ApiResponse.success(taxInvoiceService.insertTaxInvoice(body)));
     }
 
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateTaxInvoice(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(taxInvoiceService.updateTaxInvoice(body)));
     }
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteTaxInvoice(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(taxInvoiceService.deleteTaxInvoice(params)));
     }
 
     @PostMapping("/{id}/issue")
     public ResponseEntity<ApiResponse<Map<String, Object>>> issueTaxInvoice(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(taxInvoiceService.issueTaxInvoice(params)));
     }
 
     @PostMapping("/{id}/cancel")
     public ResponseEntity<ApiResponse<Map<String, Object>>> cancelTaxInvoice(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody(required = false) Map<String, Object> body) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         if (body != null) params.putAll(body);
         return ResponseEntity.ok(ApiResponse.success(taxInvoiceService.cancelTaxInvoice(params)));
diff --git a/backend-spring/src/main/java/com/erp/controller/TemplateStandardController.java b/backend-spring/src/main/java/com/erp/controller/TemplateStandardController.java
index e5a0b63c..545dc735 100644
--- a/backend-spring/src/main/java/com/erp/controller/TemplateStandardController.java
+++ b/backend-spring/src/main/java/com/erp/controller/TemplateStandardController.java
@@ -23,10 +23,10 @@ public class TemplateStandardController {
      */
     @GetMapping
     public ResponseEntity<Map<String, Object>> getTemplateStandardList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
 
-        params.putIfAbsent("companyCode", companyCode);
+        params.putIfAbsent("company_code", companyCode);
 
         Map<String, Object> result = templateStandardService.getTemplateStandardList(params);
 
@@ -38,7 +38,7 @@ public class TemplateStandardController {
         pagination.put("total",      total);
         pagination.put("page",       page);
         pagination.put("limit",      limit);
-        pagination.put("totalPages", (int) Math.ceil((double) total / limit));
+        pagination.put("total_pages", (int) Math.ceil((double) total / limit));
 
         Map<String, Object> response = new LinkedHashMap<>();
         response.put("success",    true);
@@ -54,7 +54,7 @@ public class TemplateStandardController {
      */
     @GetMapping("/categories")
     public ResponseEntity<ApiResponse<List<String>>> getTemplateStandardCategoryList(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
 
         List<String> categories = templateStandardService.getTemplateStandardCategoryList(companyCode);
         return ResponseEntity.ok(ApiResponse.success(categories));
@@ -87,8 +87,8 @@ public class TemplateStandardController {
      */
     @PostMapping("/import")
     public ResponseEntity<ApiResponse<Map<String, Object>>> importTemplateStandard(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
         if (body.get("layout_config") == null) {
@@ -135,14 +135,14 @@ public class TemplateStandardController {
         // DB 결과는 camelCase (map-underscore-to-camel-case: true)
         // 응답은 Node.js 호환을 위해 snake_case 키 사용
         Map<String, Object> exportData = new LinkedHashMap<>();
-        exportData.put("template_code",     template.get("templateCode"));
-        exportData.put("template_name",     template.get("templateName"));
-        exportData.put("template_name_eng", template.get("templateNameEng"));
+        exportData.put("template_code",     template.get("template_code"));
+        exportData.put("template_name",     template.get("template_name"));
+        exportData.put("template_name_eng", template.get("template_name_eng"));
         exportData.put("description",       template.get("description"));
         exportData.put("category",          template.get("category"));
-        exportData.put("icon_name",         template.get("iconName"));
-        exportData.put("default_size",      template.get("defaultSize"));
-        exportData.put("layout_config",     template.get("layoutConfig"));
+        exportData.put("icon_name",         template.get("icon_name"));
+        exportData.put("default_size",      template.get("default_size"));
+        exportData.put("layout_config",     template.get("layout_config"));
 
         return ResponseEntity.ok(ApiResponse.success(exportData));
     }
@@ -153,8 +153,8 @@ public class TemplateStandardController {
      */
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertTemplateStandard(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
         if (body.get("template_code") == null || body.get("template_name") == null
@@ -178,7 +178,7 @@ public class TemplateStandardController {
     @PutMapping("/{templateCode}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateTemplateStandard(
             @PathVariable String templateCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
         body.put("updated_by", userId);
@@ -211,8 +211,8 @@ public class TemplateStandardController {
     @PostMapping("/{templateCode}/duplicate")
     public ResponseEntity<ApiResponse<Map<String, Object>>> duplicateTemplateStandard(
             @PathVariable String templateCode,
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
 
         String newTemplateCode = (String) body.get("new_template_code");
@@ -223,9 +223,9 @@ public class TemplateStandardController {
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("originalCode", templateCode);
-        params.put("newCode",      newTemplateCode);
-        params.put("newName",      newTemplateName);
+        params.put("original_code", templateCode);
+        params.put("new_code",      newTemplateCode);
+        params.put("new_name",      newTemplateName);
         params.put("company_code", companyCode);
         params.put("created_by",   userId);
 
diff --git a/backend-spring/src/main/java/com/erp/controller/TestButtonDataflowController.java b/backend-spring/src/main/java/com/erp/controller/TestButtonDataflowController.java
index ef8db9f6..72499cc7 100644
--- a/backend-spring/src/main/java/com/erp/controller/TestButtonDataflowController.java
+++ b/backend-spring/src/main/java/com/erp/controller/TestButtonDataflowController.java
@@ -38,7 +38,7 @@ public class TestButtonDataflowController {
 
     @GetMapping("/relationships/all")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getAllRelationships(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         try {
             return ResponseEntity.ok(ApiResponse.success(service.getAllRelationships(companyCode)));
         } catch (Exception e) {
@@ -55,7 +55,7 @@ public class TestButtonDataflowController {
 
     @GetMapping("/test-status")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTestStatus(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         return ResponseEntity.ok(ApiResponse.success(service.getTestStatus(companyCode)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/TodoController.java b/backend-spring/src/main/java/com/erp/controller/TodoController.java
index 896ed7c7..83fadc7e 100644
--- a/backend-spring/src/main/java/com/erp/controller/TodoController.java
+++ b/backend-spring/src/main/java/com/erp/controller/TodoController.java
@@ -49,7 +49,7 @@ public class TodoController {
     @PostMapping("/reorder")
     public ResponseEntity<ApiResponse<Map<String, Object>>> reorderTodos(
             @RequestBody Map<String, Object> body) {
-        Object todoIdsObj = body.get("todoIds");
+        Object todoIdsObj = body.get("todo_ids");
         if (!(todoIdsObj instanceof List)) {
             return ResponseEntity.status(400).body(
                 ApiResponse.error("todoIds는 배열이어야 합니다."));
diff --git a/backend-spring/src/main/java/com/erp/controller/VehicleController.java b/backend-spring/src/main/java/com/erp/controller/VehicleController.java
index 599c5a9d..3558d8bc 100644
--- a/backend-spring/src/main/java/com/erp/controller/VehicleController.java
+++ b/backend-spring/src/main/java/com/erp/controller/VehicleController.java
@@ -16,63 +16,63 @@ public class VehicleController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getVehicleList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(vehicleService.getVehicleList(params)));
     }
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getVehicleInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(vehicleService.getVehicleInfo(params)));
     }
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertVehicle(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(vehicleService.insertVehicle(body)));
     }
 
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateVehicle(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(vehicleService.updateVehicle(body)));
     }
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteVehicle(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(vehicleService.deleteVehicle(params)));
     }
 
     @GetMapping("/locations")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getVehicleLocationList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(vehicleService.getVehicleLocationList(params)));
     }
 
     @PostMapping("/move")
     public ResponseEntity<ApiResponse<Map<String, Object>>> moveVehicles(
-            @RequestAttribute("companyCode") String companyCode) {
+            @RequestAttribute("company_code") String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(vehicleService.moveVehicles(params)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/VehicleTripController.java b/backend-spring/src/main/java/com/erp/controller/VehicleTripController.java
index b19a14b6..3f3de7bb 100644
--- a/backend-spring/src/main/java/com/erp/controller/VehicleTripController.java
+++ b/backend-spring/src/main/java/com/erp/controller/VehicleTripController.java
@@ -26,29 +26,29 @@ public class VehicleTripController {
     /** GET /list — 운행 목록 (alias) */
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getVehicleTripListAlias(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(vehicleTripService.getTripList(params)));
     }
 
     /** GET /trips — 운행 이력 목록, 응답: { data, total } */
     @GetMapping("/trips")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTripList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(vehicleTripService.getTripList(params)));
     }
 
     /** GET /trips/{tripId} — 운행 상세 (경로 포함) */
     @GetMapping("/trips/{tripId}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getTripDetail(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable String tripId) {
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("tripId", tripId);
+        params.put("company_code", companyCode);
+        params.put("trip_id", tripId);
         Map<String, Object> result = vehicleTripService.getTripDetail(params);
         if (result == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("운행 정보를 찾을 수 없습니다."));
@@ -61,71 +61,71 @@ public class VehicleTripController {
     /** GET /trip/active — 현재 진행 중 운행 조회 */
     @GetMapping("/trip/active")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getActiveTrip(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId) {
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("userId", userId);
+        params.put("company_code", companyCode);
+        params.put("user_id", userId);
         return ResponseEntity.ok(ApiResponse.success(vehicleTripService.getActiveTrip(params)));
     }
 
     /** POST /trip/start — 운행 시작 */
     @PostMapping("/trip/start")
     public ResponseEntity<ApiResponse<Map<String, Object>>> startTrip(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
         if (body.get("latitude") == null || body.get("longitude") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("위치 정보(latitude, longitude)가 필요합니다."));
         }
-        body.put("companyCode", companyCode);
-        body.put("userId", userId);
+        body.put("company_code", companyCode);
+        body.put("user_id", userId);
         return ResponseEntity.ok(ApiResponse.success(vehicleTripService.startTrip(body), "운행이 시작되었습니다."));
     }
 
     /** POST /trip/end — 운행 종료 */
     @PostMapping("/trip/end")
     public ResponseEntity<ApiResponse<Map<String, Object>>> endTrip(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        if (body.get("tripId") == null) {
+        if (body.get("trip_id") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("tripId가 필요합니다."));
         }
         if (body.get("latitude") == null || body.get("longitude") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("위치 정보(latitude, longitude)가 필요합니다."));
         }
-        body.put("companyCode", companyCode);
-        body.put("userId", userId);
+        body.put("company_code", companyCode);
+        body.put("user_id", userId);
         return ResponseEntity.ok(ApiResponse.success(vehicleTripService.endTrip(body), "운행이 종료되었습니다."));
     }
 
     /** POST /trip/location — 위치 기록 추가 */
     @PostMapping("/trip/location")
     public ResponseEntity<ApiResponse<Map<String, Object>>> addTripLocation(
-            @RequestAttribute("companyCode") String companyCode,
-            @RequestAttribute("userId") String userId,
+            @RequestAttribute("company_code") String companyCode,
+            @RequestAttribute("user_id") String userId,
             @RequestBody Map<String, Object> body) {
-        if (body.get("tripId") == null) {
+        if (body.get("trip_id") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("tripId가 필요합니다."));
         }
         if (body.get("latitude") == null || body.get("longitude") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("위치 정보(latitude, longitude)가 필요합니다."));
         }
-        body.put("companyCode", companyCode);
-        body.put("userId", userId);
+        body.put("company_code", companyCode);
+        body.put("user_id", userId);
         return ResponseEntity.ok(ApiResponse.success(vehicleTripService.addLocation(body)));
     }
 
     /** POST /trip/cancel — 운행 취소 */
     @PostMapping("/trip/cancel")
     public ResponseEntity<ApiResponse<Map<String, Object>>> cancelTrip(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        if (body.get("tripId") == null) {
+        if (body.get("trip_id") == null) {
             return ResponseEntity.status(400).body(ApiResponse.error("tripId가 필요합니다."));
         }
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         Map<String, Object> result = vehicleTripService.cancelTrip(body);
         if (result == null) {
             return ResponseEntity.status(404).body(ApiResponse.error("취소할 운행을 찾을 수 없습니다."));
@@ -138,54 +138,54 @@ public class VehicleTripController {
     /** GET /reports/summary — 요약 통계 (period: today/week/month/year) */
     @GetMapping("/reports/summary")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getSummaryReport(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(vehicleTripService.getSummaryReport(params)));
     }
 
     /** GET /reports/daily — 일별 통계 */
     @GetMapping("/reports/daily")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getDailyReport(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(vehicleTripService.getDailyReport(params)));
     }
 
     /** GET /reports/weekly — 주별 통계 */
     @GetMapping("/reports/weekly")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getWeeklyReport(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(vehicleTripService.getWeeklyReport(params)));
     }
 
     /** GET /reports/monthly — 월별 통계 */
     @GetMapping("/reports/monthly")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getMonthlyReport(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(vehicleTripService.getMonthlyReport(params)));
     }
 
     /** GET /reports/by-driver — 운전자별 통계 */
     @GetMapping("/reports/by-driver")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getDriverReport(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(vehicleTripService.getDriverReport(params)));
     }
 
     /** GET /reports/by-route — 구간별 통계 */
     @GetMapping("/reports/by-route")
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getRouteReport(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(vehicleTripService.getRouteReport(params)));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/controller/WebTypeStandardController.java b/backend-spring/src/main/java/com/erp/controller/WebTypeStandardController.java
index f9d001ce..4f97afa9 100644
--- a/backend-spring/src/main/java/com/erp/controller/WebTypeStandardController.java
+++ b/backend-spring/src/main/java/com/erp/controller/WebTypeStandardController.java
@@ -33,9 +33,9 @@ public class WebTypeStandardController {
     private final WebTypeStandardService service;
 
     private static final List<String> UPDATABLE_FIELDS = Arrays.asList(
-            "typeName", "typeNameEng", "description", "category",
-            "componentName", "configPanel", "defaultConfig", "validationRules",
-            "defaultStyle", "inputProperties", "sortOrder", "isActive"
+            "type_name", "type_name_eng", "description", "category",
+            "component_name", "config_panel", "default_config", "validation_rules",
+            "default_style", "input_properties", "sort_order", "is_active"
     );
 
     @GetMapping
@@ -89,20 +89,20 @@ public class WebTypeStandardController {
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> createWebType(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("userId") String userId) {
-        if (body.get("webType") == null && body.get("web_type") != null) {
-            body.put("webType", body.get("web_type"));
+            @RequestAttribute("user_id") String userId) {
+        if (body.get("web_type") == null && body.get("web_type") != null) {
+            body.put("web_type", body.get("web_type"));
         }
-        if (body.get("typeName") == null && body.get("type_name") != null) {
-            body.put("typeName", body.get("type_name"));
+        if (body.get("type_name") == null && body.get("type_name") != null) {
+            body.put("type_name", body.get("type_name"));
         }
-        if (body.get("webType") == null || body.get("typeName") == null) {
+        if (body.get("web_type") == null || body.get("type_name") == null) {
             return ResponseEntity.status(400)
                     .body(ApiResponse.error("웹타입 코드와 이름은 필수입니다."));
         }
         normalizeSnakeToCamel(body);
-        body.put("createdBy", userId);
-        body.put("updatedBy", userId);
+        body.put("created_by", userId);
+        body.put("updated_by", userId);
         try {
             Map<String, Object> result = service.createWebType(body);
             return ResponseEntity.status(HttpStatus.CREATED)
@@ -125,14 +125,14 @@ public class WebTypeStandardController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateWebType(
             @PathVariable String webType,
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("userId") String userId) {
+            @RequestAttribute("user_id") String userId) {
         normalizeSnakeToCamel(body);
         boolean hasUpdates = UPDATABLE_FIELDS.stream().anyMatch(f -> body.get(f) != null);
         if (!hasUpdates) {
             return ResponseEntity.status(400).body(ApiResponse.error("수정할 내용이 없습니다."));
         }
-        body.put("webType",   webType);
-        body.put("updatedBy", userId);
+        body.put("web_type",   webType);
+        body.put("updated_by", userId);
         try {
             Map<String, Object> result = service.updateWebType(body);
             if (result == null) {
@@ -166,13 +166,13 @@ public class WebTypeStandardController {
     @PutMapping("/sort-order/bulk")
     public ResponseEntity<ApiResponse<Void>> updateWebTypeSortOrder(
             @RequestBody Map<String, Object> body,
-            @RequestAttribute("userId") String userId) {
-        Object webTypes = body.get("webTypes");
+            @RequestAttribute("user_id") String userId) {
+        Object webTypes = body.get("web_types");
         if (!(webTypes instanceof List)) {
             return ResponseEntity.status(400)
                     .body(ApiResponse.error("유효하지 않은 데이터 형식입니다."));
         }
-        body.put("userId", userId);
+        body.put("user_id", userId);
         try {
             service.updateWebTypeSortOrder(body);
             return ResponseEntity.ok(ApiResponse.success(null,
@@ -189,17 +189,17 @@ public class WebTypeStandardController {
      * 프론트엔드가 snake_case로 보내는 경우를 대비해 호환 처리
      */
     private void normalizeSnakeToCamel(Map<String, Object> body) {
-        mapField(body, "web_type",         "webType");
-        mapField(body, "type_name",        "typeName");
-        mapField(body, "type_name_eng",    "typeNameEng");
-        mapField(body, "component_name",   "componentName");
-        mapField(body, "config_panel",     "configPanel");
-        mapField(body, "default_config",   "defaultConfig");
-        mapField(body, "validation_rules", "validationRules");
-        mapField(body, "default_style",    "defaultStyle");
-        mapField(body, "input_properties", "inputProperties");
-        mapField(body, "sort_order",       "sortOrder");
-        mapField(body, "is_active",        "isActive");
+        mapField(body, "web_type",         "web_type");
+        mapField(body, "type_name",        "type_name");
+        mapField(body, "type_name_eng",    "type_name_eng");
+        mapField(body, "component_name",   "component_name");
+        mapField(body, "config_panel",     "config_panel");
+        mapField(body, "default_config",   "default_config");
+        mapField(body, "validation_rules", "validation_rules");
+        mapField(body, "default_style",    "default_style");
+        mapField(body, "input_properties", "input_properties");
+        mapField(body, "sort_order",       "sort_order");
+        mapField(body, "is_active",        "is_active");
     }
 
     private void mapField(Map<String, Object> body, String snakeKey, String camelKey) {
diff --git a/backend-spring/src/main/java/com/erp/controller/YardLayoutController.java b/backend-spring/src/main/java/com/erp/controller/YardLayoutController.java
index 0eb81565..34dae383 100644
--- a/backend-spring/src/main/java/com/erp/controller/YardLayoutController.java
+++ b/backend-spring/src/main/java/com/erp/controller/YardLayoutController.java
@@ -16,56 +16,56 @@ public class YardLayoutController {
 
     @GetMapping("/list")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getYardLayoutList(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestParam Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(yardLayoutService.getYardLayoutList(params)));
     }
 
     @GetMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> getYardLayoutInfo(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(yardLayoutService.getYardLayoutInfo(params)));
     }
 
     @PostMapping
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertYardLayout(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         return ResponseEntity.ok(ApiResponse.success(yardLayoutService.insertYardLayout(body)));
     }
 
     @PutMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> updateYardLayout(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("companyCode", companyCode);
+        body.put("company_code", companyCode);
         body.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(yardLayoutService.updateYardLayout(body)));
     }
 
     @DeleteMapping("/{id}")
     public ResponseEntity<ApiResponse<Map<String, Object>>> deleteYardLayout(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(yardLayoutService.deleteYardLayout(params)));
     }
 
     @PostMapping("/{id}/duplicate")
     public ResponseEntity<ApiResponse<Map<String, Object>>> duplicateYardLayout(
-            @RequestAttribute("companyCode") String companyCode,
+            @RequestAttribute("company_code") String companyCode,
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("id", id);
         return ResponseEntity.ok(ApiResponse.success(yardLayoutService.duplicateYardLayout(params)));
     }
@@ -74,7 +74,7 @@ public class YardLayoutController {
     public ResponseEntity<ApiResponse<List<Map<String, Object>>>> getYardPlacementList(
             @PathVariable Long id) {
         Map<String, Object> params = new HashMap<>();
-        params.put("yardLayoutId", id);
+        params.put("yard_layout_id", id);
         return ResponseEntity.ok(ApiResponse.success(yardLayoutService.getYardPlacementList(params)));
     }
 
@@ -82,7 +82,7 @@ public class YardLayoutController {
     public ResponseEntity<ApiResponse<Map<String, Object>>> insertYardPlacement(
             @PathVariable Long id,
             @RequestBody Map<String, Object> body) {
-        body.put("yardLayoutId", id);
+        body.put("yard_layout_id", id);
         return ResponseEntity.ok(ApiResponse.success(yardLayoutService.insertYardPlacement(body)));
     }
 
diff --git a/backend-spring/src/main/java/com/erp/security/JwtAuthenticationFilter.java b/backend-spring/src/main/java/com/erp/security/JwtAuthenticationFilter.java
index 3cb2040c..229afa90 100644
--- a/backend-spring/src/main/java/com/erp/security/JwtAuthenticationFilter.java
+++ b/backend-spring/src/main/java/com/erp/security/JwtAuthenticationFilter.java
@@ -31,14 +31,14 @@ public class JwtAuthenticationFilter extends OncePerRequestFilter {
         if (StringUtils.hasText(token) && jwtTokenProvider.validateToken(token)) {
             try {
                 Claims claims = jwtTokenProvider.getClaims(token);
-                String userId = claims.get("userId", String.class);
-                String companyCode = claims.get("companyCode", String.class);
-                String userType = claims.get("userType", String.class);
+                String userId = claims.get("user_id", String.class);
+                String companyCode = claims.get("company_code", String.class);
+                String userType = claims.get("user_type", String.class);
 
-                request.setAttribute("userId", userId);
-                request.setAttribute("companyCode", companyCode);
+                request.setAttribute("user_id", userId);
+                request.setAttribute("company_code", companyCode);
                 request.setAttribute("role", userType);
-                request.setAttribute("userType", userType);
+                request.setAttribute("user_type", userType);
 
                 List<SimpleGrantedAuthority> authorities = List.of(
                         new SimpleGrantedAuthority("ROLE_" + userType)
diff --git a/backend-spring/src/main/java/com/erp/security/JwtTokenProvider.java b/backend-spring/src/main/java/com/erp/security/JwtTokenProvider.java
index 6b13d038..dd7677a0 100644
--- a/backend-spring/src/main/java/com/erp/security/JwtTokenProvider.java
+++ b/backend-spring/src/main/java/com/erp/security/JwtTokenProvider.java
@@ -32,13 +32,13 @@ public class JwtTokenProvider {
     public String generateToken(Map<String, Object> personBean) {
         Date now = new Date();
         return Jwts.builder()
-                .claim("userId",       personBean.get("userId"))
-                .claim("userName",     personBean.get("userName"))
-                .claim("deptName",     personBean.get("deptName"))
-                .claim("companyCode",  personBean.get("companyCode"))
-                .claim("companyName",  personBean.get("companyName"))
-                .claim("userType",     personBean.get("userType"))
-                .claim("userTypeName", personBean.get("userTypeName"))
+                .claim("user_id",       personBean.get("user_id"))
+                .claim("user_name",     personBean.get("user_name"))
+                .claim("dept_name",     personBean.get("dept_name"))
+                .claim("company_code",  personBean.get("company_code"))
+                .claim("company_name",  personBean.get("company_name"))
+                .claim("user_type",     personBean.get("user_type"))
+                .claim("user_type_name", personBean.get("user_type_name"))
                 .issuedAt(now)
                 .expiration(new Date(now.getTime() + expiration))
                 .audience().add("PMS-Users").and()
@@ -65,14 +65,14 @@ public class JwtTokenProvider {
     }
 
     public String getUserId(String token) {
-        return getClaims(token).get("userId", String.class);
+        return getClaims(token).get("user_id", String.class);
     }
 
     public String getCompanyCode(String token) {
-        return getClaims(token).get("companyCode", String.class);
+        return getClaims(token).get("company_code", String.class);
     }
 
     public String getUserType(String token) {
-        return getClaims(token).get("userType", String.class);
+        return getClaims(token).get("user_type", String.class);
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/AdminService.java b/backend-spring/src/main/java/com/erp/service/AdminService.java
index dc601495..e722cf78 100644
--- a/backend-spring/src/main/java/com/erp/service/AdminService.java
+++ b/backend-spring/src/main/java/com/erp/service/AdminService.java
@@ -24,16 +24,16 @@ public class AdminService extends BaseService {
     // ── 메뉴 관리 ──────────────────────────────────────────────────────────
 
     public List<Map<String, Object>> getAdminMenuList(Map<String, Object> params) {
-        params.putIfAbsent("userLang", "ko");
+        params.putIfAbsent("user_lang", "ko");
         // String "false"/"true" → Boolean (OGNL !includeInactive 오작동 방지)
-        Object includeInactiveRaw = params.get("includeInactive");
-        params.put("includeInactive", Boolean.TRUE.equals(includeInactiveRaw) || "true".equals(includeInactiveRaw));
-        params.putIfAbsent("isManagementScreen", false);
+        Object includeInactiveRaw = params.get("include_inactive");
+        params.put("include_inactive", Boolean.TRUE.equals(includeInactiveRaw) || "true".equals(includeInactiveRaw));
+        params.putIfAbsent("is_management_screen", false);
         return sqlSession.selectList("admin.selectAdminMenuList", params);
     }
 
     public List<Map<String, Object>> getUserMenuList(Map<String, Object> params) {
-        params.putIfAbsent("userLang", "ko");
+        params.putIfAbsent("user_lang", "ko");
         return sqlSession.selectList("admin.selectUserMenuList", params);
     }
 
@@ -41,9 +41,9 @@ public class AdminService extends BaseService {
         Map<String, Object> result = new HashMap<>();
         List<Map<String, Object>> parents = sqlSession.selectList("admin.selectPopParentMenu", params);
         if (parents.isEmpty()) {
-            result.put("parentMenu", null);
-            result.put("childMenus", List.of());
-            result.put("landingMenu", null);
+            result.put("parent_menu", null);
+            result.put("child_menus", List.of());
+            result.put("landing_menu", null);
             return result;
         }
         Map<String, Object> parent = parents.get(0);
@@ -51,8 +51,8 @@ public class AdminService extends BaseService {
         Object parentCompanyCode = parent.get("company_code");
 
         Map<String, Object> childParams = new HashMap<>();
-        childParams.put("parentObjid", parentObjid);
-        childParams.put("parentCompanyCode", parentCompanyCode);
+        childParams.put("parent_objid", parentObjid);
+        childParams.put("parent_company_code", parentCompanyCode);
         List<Map<String, Object>> children = sqlSession.selectList("admin.selectPopChildMenus", childParams);
 
         Map<String, Object> landingMenu = children.stream()
@@ -63,15 +63,15 @@ public class AdminService extends BaseService {
                 .findFirst()
                 .orElse(null);
 
-        result.put("parentMenu", parent);
-        result.put("childMenus", children);
-        result.put("landingMenu", landingMenu);
+        result.put("parent_menu", parent);
+        result.put("child_menus", children);
+        result.put("landing_menu", landingMenu);
         return result;
     }
 
     public Map<String, Object> getMenuInfo(String menuId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("menuId", menuId);
+        params.put("menu_id", menuId);
         return sqlSession.selectOne("admin.selectMenuById", params);
     }
 
@@ -81,14 +81,14 @@ public class AdminService extends BaseService {
     }
 
     public Map<String, Object> updateMenu(String menuId, Map<String, Object> params) {
-        params.put("menuId", menuId);
+        params.put("menu_id", menuId);
         sqlSession.update("admin.updateMenu", params);
         return params;
     }
 
     public void deleteMenu(String menuId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("menuId", menuId);
+        params.put("menu_id", menuId);
         sqlSession.delete("admin.deleteMenu", params);
     }
 
@@ -97,7 +97,7 @@ public class AdminService extends BaseService {
         if (current == null) throw new IllegalArgumentException("메뉴를 찾을 수 없습니다.");
         String newStatus = "active".equalsIgnoreCase((String) current.get("status")) ? "inactive" : "active";
         Map<String, Object> params = new HashMap<>();
-        params.put("menuId", menuId);
+        params.put("menu_id", menuId);
         params.put("status", newStatus);
         sqlSession.update("admin.updateMenuStatus", params);
         return Map.of("status", newStatus);
@@ -123,37 +123,37 @@ public class AdminService extends BaseService {
         Map<String, Object> pagination = new HashMap<>();
         pagination.put("page", page);
         pagination.put("limit", limit);
-        pagination.put("totalPages", totalPages);
+        pagination.put("total_pages", totalPages);
 
         Map<String, Object> result = new HashMap<>();
         result.put("data", commonService.toCamelCaseKeysList(users));
         result.put("total", total);
-        result.put("searchType", rawSearch != null ? "v2" : "none");
+        result.put("search_type", rawSearch != null ? "v2" : "none");
         result.put("pagination", pagination);
         return result;
     }
 
     public Map<String, Object> getUserInfo(String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("userId", userId);
+        params.put("user_id", userId);
         return sqlSession.selectOne("admin.selectUserById", params);
     }
 
     public List<Map<String, Object>> getUserHistory(String userId, Map<String, Object> params) {
-        params.put("userId", userId);
+        params.put("user_id", userId);
         commonService.applyPagination(params);
         return sqlSession.selectList("admin.selectUserHistory", params);
     }
 
     @Transactional
     public Map<String, Object> saveUser(Map<String, Object> params) {
-        String userId = (String) params.get("userId");
-        Map<String, Object> existing = sqlSession.selectOne("admin.selectUserById", Map.of("userId", userId));
+        String userId = (String) params.get("user_id");
+        Map<String, Object> existing = sqlSession.selectOne("admin.selectUserById", Map.of("user_id", userId));
         if (existing != null) {
             sqlSession.update("admin.updateUser", params);
         } else {
-            String rawPw = (String) params.getOrDefault("userPassword", "Welcome1!");
-            params.put("userPassword", passwordEncoder.encode(rawPw));
+            String rawPw = (String) params.getOrDefault("user_password", "Welcome1!");
+            params.put("user_password", passwordEncoder.encode(rawPw));
             sqlSession.insert("admin.insertUser", params);
         }
         return params;
@@ -161,7 +161,7 @@ public class AdminService extends BaseService {
 
     public void changeUserStatus(String userId, String status) {
         Map<String, Object> params = new HashMap<>();
-        params.put("userId", userId);
+        params.put("user_id", userId);
         params.put("status", status);
         sqlSession.update("admin.updateUserStatus", params);
     }
@@ -169,13 +169,13 @@ public class AdminService extends BaseService {
     public void resetUserPassword(String userId) {
         String defaultPw = passwordEncoder.encode("Welcome1!");
         Map<String, Object> params = new HashMap<>();
-        params.put("userId", userId);
-        params.put("userPassword", defaultPw);
+        params.put("user_id", userId);
+        params.put("user_password", defaultPw);
         sqlSession.update("admin.updateUserPassword", params);
     }
 
     public Map<String, Object> getUserLocale(String userId) {
-        Map<String, Object> row = sqlSession.selectOne("admin.selectUserLocale", Map.of("userId", userId));
+        Map<String, Object> row = sqlSession.selectOne("admin.selectUserLocale", Map.of("user_id", userId));
         Map<String, Object> result = new HashMap<>();
         result.put("locale", row != null ? row.get("locale") : "KR");
         return result;
@@ -188,7 +188,7 @@ public class AdminService extends BaseService {
             throw new IllegalArgumentException("유효하지 않은 로케일입니다: " + locale);
         }
         Map<String, Object> params = new HashMap<>();
-        params.put("userId", userId);
+        params.put("user_id", userId);
         params.put("locale", locale);
         sqlSession.update("admin.updateUserLocale", params);
     }
@@ -204,79 +204,79 @@ public class AdminService extends BaseService {
                 .filter(d -> !Boolean.TRUE.equals(d.get("is_primary")))
                 .collect(Collectors.toList());
         Map<String, Object> result = new HashMap<>();
-        result.put("userInfo", userInfo);
-        result.put("mainDept", mainDept);
-        result.put("subDepts", subDepts);
+        result.put("user_info", userInfo);
+        result.put("main_dept", mainDept);
+        result.put("sub_depts", subDepts);
         return result;
     }
 
     @Transactional
     public Map<String, Object> saveUserWithDept(Map<String, Object> body) {
         @SuppressWarnings("unchecked")
-        Map<String, Object> userInfoRaw = (Map<String, Object>) body.get("userInfo");
+        Map<String, Object> userInfoRaw = (Map<String, Object>) body.get("user_info");
         @SuppressWarnings("unchecked")
-        Map<String, Object> mainDept = (Map<String, Object>) body.get("mainDept");
+        Map<String, Object> mainDept = (Map<String, Object>) body.get("main_dept");
         @SuppressWarnings("unchecked")
-        List<Map<String, Object>> subDepts = body.get("subDepts") != null
-                ? (List<Map<String, Object>>) body.get("subDepts") : List.of();
-        String companyCode = (String) body.get("companyCode");
+        List<Map<String, Object>> subDepts = body.get("sub_depts") != null
+                ? (List<Map<String, Object>>) body.get("sub_depts") : List.of();
+        String companyCode = (String) body.get("company_code");
 
         if (userInfoRaw == null) throw new IllegalArgumentException("userInfo is required");
 
         // snake_case / camelCase 양쪽 처리
-        String userId = getField(userInfoRaw, "userId", "user_id");
+        String userId = getField(userInfoRaw, "user_id", "user_id");
         if (userId == null) throw new IllegalArgumentException("userId is required");
 
         // 메인 부서 코드/이름/직위 결정
-        String deptCode = mainDept != null ? getField(mainDept, "deptCode", "dept_code") : null;
-        if (deptCode == null) deptCode = getField(userInfoRaw, "deptCode", "dept_code");
-        String deptName = mainDept != null ? getField(mainDept, "deptName", "dept_name") : null;
-        if (deptName == null) deptName = getField(userInfoRaw, "deptName", "dept_name");
-        String positionName = mainDept != null ? getField(mainDept, "positionName", "position_name") : null;
-        if (positionName == null) positionName = getField(userInfoRaw, "positionName", "position_name");
+        String deptCode = mainDept != null ? getField(mainDept, "dept_code", "dept_code") : null;
+        if (deptCode == null) deptCode = getField(userInfoRaw, "dept_code", "dept_code");
+        String deptName = mainDept != null ? getField(mainDept, "dept_name", "dept_name") : null;
+        if (deptName == null) deptName = getField(userInfoRaw, "dept_name", "dept_name");
+        String positionName = mainDept != null ? getField(mainDept, "position_name", "position_name") : null;
+        if (positionName == null) positionName = getField(userInfoRaw, "position_name", "position_name");
 
         // camelCase params 빌드
         Map<String, Object> saveParams = new HashMap<>();
-        saveParams.put("userId", userId);
-        saveParams.put("userName", getField(userInfoRaw, "userName", "user_name"));
-        saveParams.put("userNameEng", getField(userInfoRaw, "userNameEng", "user_name_eng"));
+        saveParams.put("user_id", userId);
+        saveParams.put("user_name", getField(userInfoRaw, "user_name", "user_name"));
+        saveParams.put("user_name_eng", getField(userInfoRaw, "user_name_eng", "user_name_eng"));
         saveParams.put("email", userInfoRaw.getOrDefault("email", null));
         saveParams.put("tel", userInfoRaw.getOrDefault("tel", null));
-        saveParams.put("cellPhone", getField(userInfoRaw, "cellPhone", "cell_phone"));
+        saveParams.put("cell_phone", getField(userInfoRaw, "cell_phone", "cell_phone"));
         saveParams.put("sabun", userInfoRaw.getOrDefault("sabun", null));
-        saveParams.put("userType", getField(userInfoRaw, "userType", "user_type"));
-        saveParams.put("userTypeName", getField(userInfoRaw, "userTypeName", "user_type_name"));
+        saveParams.put("user_type", getField(userInfoRaw, "user_type", "user_type"));
+        saveParams.put("user_type_name", getField(userInfoRaw, "user_type_name", "user_type_name"));
         saveParams.put("status", userInfoRaw.getOrDefault("status", "active"));
         saveParams.put("locale", userInfoRaw.getOrDefault("locale", null));
-        saveParams.put("positionCode", getField(userInfoRaw, "positionCode", "position_code"));
-        saveParams.put("deptCode", deptCode);
-        saveParams.put("deptName", deptName);
-        saveParams.put("positionName", positionName);
+        saveParams.put("position_code", getField(userInfoRaw, "position_code", "position_code"));
+        saveParams.put("dept_code", deptCode);
+        saveParams.put("dept_name", deptName);
+        saveParams.put("position_name", positionName);
         String effectiveCompany = !"*".equals(companyCode) ? companyCode : null;
-        saveParams.put("companyCode", effectiveCompany);
+        saveParams.put("company_code", effectiveCompany);
 
         // 기존 사용자 확인
-        Map<String, Object> existing = sqlSession.selectOne("admin.selectUserById", Map.of("userId", userId));
+        Map<String, Object> existing = sqlSession.selectOne("admin.selectUserById", Map.of("user_id", userId));
         boolean isUpdate = existing != null;
 
         if (isUpdate) {
             // 비밀번호가 제공된 경우만 업데이트
-            String rawPw = getField(userInfoRaw, "userPassword", "user_password");
+            String rawPw = getField(userInfoRaw, "user_password", "user_password");
             if (rawPw != null && !rawPw.isBlank()) {
-                saveParams.put("userPassword", passwordEncoder.encode(rawPw));
+                saveParams.put("user_password", passwordEncoder.encode(rawPw));
             }
             sqlSession.update("admin.updateUserForDept", saveParams);
         } else {
-            String rawPw = getField(userInfoRaw, "userPassword", "user_password");
+            String rawPw = getField(userInfoRaw, "user_password", "user_password");
             if (rawPw == null || rawPw.isBlank()) rawPw = "Welcome1!";
-            saveParams.put("userPassword", passwordEncoder.encode(rawPw));
+            saveParams.put("user_password", passwordEncoder.encode(rawPw));
             sqlSession.insert("admin.insertUser", saveParams);
         }
 
         // user_dept 처리
         if (mainDept != null || !subDepts.isEmpty()) {
             // 1. 기존 부서 목록 조회
-            List<Map<String, Object>> existingDepts = sqlSession.selectList("admin.selectUserDeptList", Map.of("userId", userId));
+            List<Map<String, Object>> existingDepts = sqlSession.selectList("admin.selectUserDeptList", Map.of("user_id", userId));
             Map<String, Object> existingMain = existingDepts.stream()
                     .filter(d -> Boolean.TRUE.equals(d.get("is_primary")))
                     .findFirst().orElse(null);
@@ -285,47 +285,47 @@ public class AdminService extends BaseService {
             if (mainDept != null && deptCode != null && existingMain != null) {
                 String existingMainCode = (String) existingMain.get("dept_code");
                 if (existingMainCode != null && !existingMainCode.equals(deptCode)) {
-                    sqlSession.update("admin.updateUserDeptNotPrimary", Map.of("userId", userId, "deptCode", existingMainCode));
+                    sqlSession.update("admin.updateUserDeptNotPrimary", Map.of("user_id", userId, "dept_code", existingMainCode));
                 }
             }
 
             // 3. 겸직 부서 전체 삭제 (새로 입력받은 것으로 교체)
-            sqlSession.delete("admin.deleteUserDeptSub", Map.of("userId", userId));
+            sqlSession.delete("admin.deleteUserDeptSub", Map.of("user_id", userId));
 
             // 4. 메인 부서 UPSERT
             if (mainDept != null && deptCode != null) {
-                String userName = (String) saveParams.get("userName");
+                String userName = (String) saveParams.get("user_name");
                 Map<String, Object> dp = new HashMap<>();
-                dp.put("userId", userId);
-                dp.put("deptCode", deptCode);
-                dp.put("isPrimary", true);
-                dp.put("deptName", deptName);
-                dp.put("userName", userName);
-                dp.put("positionName", positionName);
-                dp.put("companyCode", effectiveCompany);
+                dp.put("user_id", userId);
+                dp.put("dept_code", deptCode);
+                dp.put("is_primary", true);
+                dp.put("dept_name", deptName);
+                dp.put("user_name", userName);
+                dp.put("position_name", positionName);
+                dp.put("company_code", effectiveCompany);
                 sqlSession.insert("admin.upsertUserDept", dp);
             }
 
             // 5. 겸직 부서 저장
-            String userName = (String) saveParams.get("userName");
+            String userName = (String) saveParams.get("user_name");
             for (Map<String, Object> sub : subDepts) {
-                String subCode = getField(sub, "deptCode", "dept_code");
+                String subCode = getField(sub, "dept_code", "dept_code");
                 if (subCode == null || subCode.equals(deptCode)) continue;
                 Map<String, Object> dp = new HashMap<>();
-                dp.put("userId", userId);
-                dp.put("deptCode", subCode);
-                dp.put("isPrimary", false);
-                dp.put("deptName", getField(sub, "deptName", "dept_name"));
-                dp.put("userName", userName);
-                dp.put("positionName", getField(sub, "positionName", "position_name"));
-                dp.put("companyCode", effectiveCompany);
+                dp.put("user_id", userId);
+                dp.put("dept_code", subCode);
+                dp.put("is_primary", false);
+                dp.put("dept_name", getField(sub, "dept_name", "dept_name"));
+                dp.put("user_name", userName);
+                dp.put("position_name", getField(sub, "position_name", "position_name"));
+                dp.put("company_code", effectiveCompany);
                 sqlSession.insert("admin.upsertUserDept", dp);
             }
         }
 
         Map<String, Object> result = new HashMap<>();
-        result.put("userId", userId);
-        result.put("isUpdate", isUpdate);
+        result.put("user_id", userId);
+        result.put("is_update", isUpdate);
         return result;
     }
 
@@ -374,9 +374,9 @@ public class AdminService extends BaseService {
 
         Map<String, Object> result = new HashMap<>();
         result.put("departments", rootDepts);
-        result.put("flatList", flatList);
+        result.put("flat_list", flatList);
         result.put("total", rawList.size());
-        result.put("totalCount", rawList.size());
+        result.put("total_count", rawList.size());
         return result;
     }
 
@@ -389,7 +389,7 @@ public class AdminService extends BaseService {
     }
 
     public Map<String, Object> getCompanyByCode(String companyCode) {
-        return sqlSession.selectOne("admin.selectCompanyByCode", Map.of("companyCode", companyCode));
+        return sqlSession.selectOne("admin.selectCompanyByCode", Map.of("company_code", companyCode));
     }
 
     @Transactional
@@ -400,19 +400,19 @@ public class AdminService extends BaseService {
 
     @Transactional
     public Map<String, Object> updateCompanyInfo(String companyCode, Map<String, Object> params) {
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         sqlSession.update("admin.updateCompany", params);
         return params;
     }
 
     @Transactional
     public void deleteCompany(String companyCode) {
-        sqlSession.delete("admin.deleteCompany", Map.of("companyCode", companyCode));
+        sqlSession.delete("admin.deleteCompany", Map.of("company_code", companyCode));
     }
 
     // ── 테이블 스키마 ──────────────────────────────────────────────────────
 
     public List<Map<String, Object>> getTableSchema(String tableName) {
-        return sqlSession.selectList("admin.selectTableSchema", Map.of("tableName", tableName));
+        return sqlSession.selectList("admin.selectTableSchema", Map.of("table_name", tableName));
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/AnalyticsReportService.java b/backend-spring/src/main/java/com/erp/service/AnalyticsReportService.java
index f97d58c6..62ba30fa 100644
--- a/backend-spring/src/main/java/com/erp/service/AnalyticsReportService.java
+++ b/backend-spring/src/main/java/com/erp/service/AnalyticsReportService.java
@@ -16,7 +16,7 @@ public class AnalyticsReportService extends BaseService {
     private static final String NS = "analyticsReport.";
 
     public Map<String, Object> getProductionReportData(Map<String, Object> params) {
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getProductionReportData", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_production_report_data", params);
         Map<String, Object> filterOptions = new LinkedHashMap<>();
         filterOptions.put("processes", extractFilterSet(rows, "process"));
         filterOptions.put("equipment", extractFilterSet(rows, "equipment"));
@@ -24,13 +24,13 @@ public class AnalyticsReportService extends BaseService {
         filterOptions.put("workers", extractFilterSet(rows, "worker"));
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("rows", rows);
-        result.put("filterOptions", filterOptions);
-        result.put("totalCount", rows.size());
+        result.put("filter_options", filterOptions);
+        result.put("total_count", rows.size());
         return result;
     }
 
     public Map<String, Object> getInventoryReportData(Map<String, Object> params) {
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getInventoryReportData", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_inventory_report_data", params);
         Map<String, Object> filterOptions = new LinkedHashMap<>();
         filterOptions.put("items", extractFilterSet(rows, "item"));
         filterOptions.put("warehouses", extractFilterSet(rows, "warehouse"));
@@ -43,13 +43,13 @@ public class AnalyticsReportService extends BaseService {
         ));
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("rows", rows);
-        result.put("filterOptions", filterOptions);
-        result.put("totalCount", rows.size());
+        result.put("filter_options", filterOptions);
+        result.put("total_count", rows.size());
         return result;
     }
 
     public Map<String, Object> getPurchaseReportData(Map<String, Object> params) {
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getPurchaseReportData", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_purchase_report_data", params);
         Map<String, Object> filterOptions = new LinkedHashMap<>();
         filterOptions.put("suppliers", extractFilterSet(rows, "supplier"));
         filterOptions.put("items", extractFilterSet(rows, "item"));
@@ -57,16 +57,16 @@ public class AnalyticsReportService extends BaseService {
         filterOptions.put("statuses", extractFilterSet(rows, "status"));
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("rows", rows);
-        result.put("filterOptions", filterOptions);
-        result.put("totalCount", rows.size());
+        result.put("filter_options", filterOptions);
+        result.put("total_count", rows.size());
         return result;
     }
 
     public Map<String, Object> getQualityReportData(Map<String, Object> params) {
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getQualityReportData", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_quality_report_data", params);
         Map<String, Object> filterOptions = new LinkedHashMap<>();
         filterOptions.put("items", extractFilterSet(rows, "item"));
-        filterOptions.put("defectTypes", List.of(
+        filterOptions.put("defect_types", List.of(
             Map.of("value", "외관불량", "label", "외관불량"),
             Map.of("value", "치수불량", "label", "치수불량"),
             Map.of("value", "기능불량", "label", "기능불량"),
@@ -77,36 +77,36 @@ public class AnalyticsReportService extends BaseService {
         filterOptions.put("inspectors", extractFilterSet(rows, "inspector"));
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("rows", rows);
-        result.put("filterOptions", filterOptions);
-        result.put("totalCount", rows.size());
+        result.put("filter_options", filterOptions);
+        result.put("total_count", rows.size());
         return result;
     }
 
     public Map<String, Object> getEquipmentReportData(Map<String, Object> params) {
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getEquipmentReportData", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_equipment_report_data", params);
         Map<String, Object> filterOptions = new LinkedHashMap<>();
         filterOptions.put("equipment", extractFilterSet(rows, "equipment"));
-        filterOptions.put("equipTypes", extractFilterSet(rows, "equipType"));
+        filterOptions.put("equip_types", extractFilterSet(rows, "equip_type"));
         filterOptions.put("lines", extractFilterSet(rows, "line"));
         filterOptions.put("managers", extractFilterSet(rows, "manager"));
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("rows", rows);
-        result.put("filterOptions", filterOptions);
-        result.put("totalCount", rows.size());
+        result.put("filter_options", filterOptions);
+        result.put("total_count", rows.size());
         return result;
     }
 
     public Map<String, Object> getMoldReportData(Map<String, Object> params) {
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getMoldReportData", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_mold_report_data", params);
         Map<String, Object> filterOptions = new LinkedHashMap<>();
         filterOptions.put("molds", extractFilterSet(rows, "mold"));
-        filterOptions.put("moldTypes", extractFilterSet(rows, "moldType"));
+        filterOptions.put("mold_types", extractFilterSet(rows, "mold_type"));
         filterOptions.put("items", extractFilterSet(rows, "item"));
         filterOptions.put("makers", extractFilterSet(rows, "maker"));
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("rows", rows);
-        result.put("filterOptions", filterOptions);
-        result.put("totalCount", rows.size());
+        result.put("filter_options", filterOptions);
+        result.put("total_count", rows.size());
         return result;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/ApprovalService.java b/backend-spring/src/main/java/com/erp/service/ApprovalService.java
index fe0f79c0..d3933f02 100644
--- a/backend-spring/src/main/java/com/erp/service/ApprovalService.java
+++ b/backend-spring/src/main/java/com/erp/service/ApprovalService.java
@@ -24,7 +24,7 @@ public class ApprovalService extends BaseService {
     public List<Map<String, Object>> getDefinitions(Map<String, Object> params) {
         Object search = params.get("search");
         if (search != null && !search.toString().isBlank()) {
-            params.put("searchLike", "%" + search + "%");
+            params.put("search_like", "%" + search + "%");
         }
         return sqlSession.selectList("approval.selectDefinitions", params);
     }
@@ -39,28 +39,28 @@ public class ApprovalService extends BaseService {
     public Map<String, Object> createDefinition(Map<String, Object> params) {
         sqlSession.insert("approval.insertDefinition", params);
         Map<String, Object> fetch = new HashMap<>();
-        fetch.put("definitionId", params.get("definitionId"));
-        fetch.put("companyCode", "*");
+        fetch.put("definition_id", params.get("definition_id"));
+        fetch.put("company_code", "*");
         return sqlSession.selectOne("approval.selectDefinitionById", fetch);
     }
 
     @Transactional
     public Map<String, Object> updateDefinition(Map<String, Object> params) {
         Map<String, Object> checkP = new HashMap<>();
-        checkP.put("definitionId", params.get("definitionId"));
-        checkP.put("companyCode",  params.get("companyCode"));
+        checkP.put("definition_id", params.get("definition_id"));
+        checkP.put("company_code",  params.get("company_code"));
         if (sqlSession.selectOne("approval.selectDefinitionById", checkP) == null)
             throw new IllegalArgumentException("결재 유형을 찾을 수 없습니다.");
         sqlSession.update("approval.updateDefinition", params);
-        checkP.put("companyCode", "*");
+        checkP.put("company_code", "*");
         return sqlSession.selectOne("approval.selectDefinitionById", checkP);
     }
 
     @Transactional
     public void deleteDefinition(Map<String, Object> params) {
         Map<String, Object> checkP = new HashMap<>();
-        checkP.put("definitionId", params.get("definitionId"));
-        checkP.put("companyCode",  params.get("companyCode"));
+        checkP.put("definition_id", params.get("definition_id"));
+        checkP.put("company_code",  params.get("company_code"));
         if (sqlSession.selectOne("approval.selectDefinitionById", checkP) == null)
             throw new IllegalArgumentException("결재 유형을 찾을 수 없습니다.");
         sqlSession.delete("approval.deleteDefinition", params);
@@ -79,8 +79,8 @@ public class ApprovalService extends BaseService {
         if (template == null) throw new IllegalArgumentException("결재선 템플릿을 찾을 수 없습니다.");
 
         Map<String, Object> stepP = new HashMap<>();
-        stepP.put("templateId",  template.get("template_id"));
-        stepP.put("companyCode", params.get("companyCode"));
+        stepP.put("template_id",  template.get("template_id"));
+        stepP.put("company_code", params.get("company_code"));
         template.put("steps", sqlSession.selectList("approval.selectTemplateSteps", stepP));
         return template;
     }
@@ -88,21 +88,21 @@ public class ApprovalService extends BaseService {
     @Transactional
     public Map<String, Object> createTemplate(Map<String, Object> params) {
         sqlSession.insert("approval.insertTemplate", params);
-        long templateId = toLong(params.get("templateId"));
+        long templateId = toLong(params.get("template_id"));
         List<Map<String, Object>> steps = castList(params.get("steps"));
-        if (steps != null) insertTemplateSteps(templateId, steps, (String) params.get("companyCode"));
+        if (steps != null) insertTemplateSteps(templateId, steps, (String) params.get("company_code"));
 
         Map<String, Object> fetch = new HashMap<>();
-        fetch.put("templateId",  templateId);
-        fetch.put("companyCode", "*");
+        fetch.put("template_id",  templateId);
+        fetch.put("company_code", "*");
         return sqlSession.selectOne("approval.selectTemplateById", fetch);
     }
 
     @Transactional
     public Map<String, Object> updateTemplate(Map<String, Object> params) {
         Map<String, Object> checkP = new HashMap<>();
-        checkP.put("templateId",  params.get("templateId"));
-        checkP.put("companyCode", params.get("companyCode"));
+        checkP.put("template_id",  params.get("template_id"));
+        checkP.put("company_code", params.get("company_code"));
         if (sqlSession.selectOne("approval.selectTemplateById", checkP) == null)
             throw new IllegalArgumentException("결재선 템플릿을 찾을 수 없습니다.");
 
@@ -110,26 +110,26 @@ public class ApprovalService extends BaseService {
 
         List<Map<String, Object>> steps = castList(params.get("steps"));
         if (steps != null) {
-            String cc       = (String) params.get("companyCode");
-            long   templateId = toLong(params.get("templateId"));
+            String cc       = (String) params.get("company_code");
+            long   templateId = toLong(params.get("template_id"));
             Map<String, Object> delP = new HashMap<>();
-            delP.put("templateId",  templateId);
-            delP.put("companyCode", cc);
+            delP.put("template_id",  templateId);
+            delP.put("company_code", cc);
             sqlSession.delete("approval.deleteTemplateStepsByTemplateId", delP);
             insertTemplateSteps(templateId, steps, cc);
         }
 
         Map<String, Object> fetch = new HashMap<>();
-        fetch.put("templateId",  params.get("templateId"));
-        fetch.put("companyCode", "*");
+        fetch.put("template_id",  params.get("template_id"));
+        fetch.put("company_code", "*");
         return sqlSession.selectOne("approval.selectTemplateById", fetch);
     }
 
     @Transactional
     public void deleteTemplate(Map<String, Object> params) {
         Map<String, Object> checkP = new HashMap<>();
-        checkP.put("templateId",  params.get("templateId"));
-        checkP.put("companyCode", params.get("companyCode"));
+        checkP.put("template_id",  params.get("template_id"));
+        checkP.put("company_code", params.get("company_code"));
         if (sqlSession.selectOne("approval.selectTemplateById", checkP) == null)
             throw new IllegalArgumentException("결재선 템플릿을 찾을 수 없습니다.");
         sqlSession.delete("approval.deleteTemplate", params);
@@ -138,8 +138,8 @@ public class ApprovalService extends BaseService {
     private void insertTemplateSteps(long templateId, List<Map<String, Object>> steps, String companyCode) {
         for (Map<String, Object> step : steps) {
             Map<String, Object> sp = new HashMap<>(step);
-            sp.put("templateId",  templateId);
-            sp.put("companyCode", companyCode);
+            sp.put("template_id",  templateId);
+            sp.put("company_code", companyCode);
             sqlSession.insert("approval.insertTemplateStep", sp);
         }
     }
@@ -151,8 +151,8 @@ public class ApprovalService extends BaseService {
     public Map<String, Object> getRequests(Map<String, Object> params) {
         int page   = toInt(params.getOrDefault("page",  "1"));
         int limit  = toInt(params.getOrDefault("limit", "20"));
-        params.put("pageLimit",  limit);
-        params.put("pageOffset", (page - 1) * limit);
+        params.put("page_limit",  limit);
+        params.put("page_offset", (page - 1) * limit);
 
         List<Map<String, Object>> data  = sqlSession.selectList("approval.selectRequests", params);
         Number totalNum = sqlSession.selectOne("approval.countRequests", params);
@@ -171,18 +171,18 @@ public class ApprovalService extends BaseService {
         if (request == null) throw new IllegalArgumentException("결재 요청을 찾을 수 없습니다.");
 
         Map<String, Object> lineP = new HashMap<>();
-        lineP.put("requestId",  request.get("request_id"));
-        lineP.put("companyCode", params.get("companyCode"));
+        lineP.put("request_id",  request.get("request_id"));
+        lineP.put("company_code", params.get("company_code"));
         request.put("lines", sqlSession.selectList("approval.selectLinesByRequestId", lineP));
         return request;
     }
 
     @Transactional
     public Map<String, Object> createRequest(Map<String, Object> params) {
-        String companyCode  = (String) params.get("companyCode");
-        String userId       = (String) params.get("userId");
-        String userName     = (String) params.getOrDefault("requesterName", userId);
-        String deptName     = (String) params.getOrDefault("requesterDept", "");
+        String companyCode  = (String) params.get("company_code");
+        String userId       = (String) params.get("user_id");
+        String userName     = (String) params.getOrDefault("requester_name", userId);
+        String deptName     = (String) params.getOrDefault("requester_dept", "");
         String approvalType = (String) params.getOrDefault("approval_type", "escalation");
 
         String title       = (String) params.get("title");
@@ -205,8 +205,8 @@ public class ApprovalService extends BaseService {
             Object defId = params.get("definition_id");
             if (defId != null) {
                 Map<String, Object> defP = new HashMap<>();
-                defP.put("definitionId", defId);
-                defP.put("companyCode",  companyCode);
+                defP.put("definition_id", defId);
+                defP.put("company_code",  companyCode);
                 Map<String, Object> def = sqlSession.selectOne("approval.selectDefinitionById", defP);
                 if (def != null) {
                     Object allow = def.get("allow_self_approval");
@@ -218,9 +218,9 @@ public class ApprovalService extends BaseService {
             }
             Map<String, Object> insertP = buildRequestInsertParams(params, "approved", 1, "self",
                     userId, userName, deptName, safeRecordId, recordDataJson, companyCode);
-            insertP.put("finalApproverId", userId);
+            insertP.put("final_approver_id", userId);
             sqlSession.insert("approval.insertRequest", insertP);
-            long requestId = toLong(insertP.get("requestId"));
+            long requestId = toLong(insertP.get("request_id"));
 
             Map<String, Object> lineP = buildLineInsertParams(requestId, 1, userId, userName,
                     null, deptName, "자기결재", "approved", "approval", true, companyCode);
@@ -240,60 +240,60 @@ public class ApprovalService extends BaseService {
         // 같은 step_order에 approval 타입 2명 이상 방지
         Map<Integer, List<Map<String, Object>>> groups = new LinkedHashMap<>();
         for (Map<String, Object> a : normalized) {
-            int so = toInt(a.get("stepOrder"));
+            int so = toInt(a.get("step_order"));
             groups.computeIfAbsent(so, k -> new ArrayList<>()).add(a);
         }
         for (Map.Entry<Integer, List<Map<String, Object>>> e : groups.entrySet()) {
             List<Map<String, Object>> g = e.getValue();
-            if (g.size() > 1 && g.stream().allMatch(a -> "approval".equals(a.get("stepType"))))
+            if (g.size() > 1 && g.stream().allMatch(a -> "approval".equals(a.get("step_type"))))
                 throw new IllegalArgumentException(
                         "step_order " + e.getKey() + "에 approval 타입 결재자가 2명 이상입니다. consensus로 지정해주세요.");
         }
 
-        int totalSteps      = normalized.stream().mapToInt(a -> toInt(a.get("stepOrder"))).max().orElse(1);
+        int totalSteps      = normalized.stream().mapToInt(a -> toInt(a.get("step_order"))).max().orElse(1);
         String storedType   = hasExplicitStepType ? "escalation" : approvalType;
         String initialStatus = "post".equals(approvalType) ? "post_pending" : "requested";
 
         Map<String, Object> insertP = buildRequestInsertParams(params, initialStatus, totalSteps, storedType,
                 userId, userName, deptName, safeRecordId, recordDataJson, companyCode);
         sqlSession.insert("approval.insertRequest", insertP);
-        long requestId = toLong(insertP.get("requestId"));
+        long requestId = toLong(insertP.get("request_id"));
 
         List<Integer> uniqueSteps = normalized.stream()
-                .map(a -> toInt(a.get("stepOrder"))).distinct().sorted().collect(Collectors.toList());
+                .map(a -> toInt(a.get("step_order"))).distinct().sorted().collect(Collectors.toList());
         int firstStep = uniqueSteps.get(0);
 
         for (Map<String, Object> approver : normalized) {
-            int so     = toInt(approver.get("stepOrder"));
+            int so     = toInt(approver.get("step_order"));
             String ls  = (so == firstStep) ? "pending" : "waiting";
             Map<String, Object> lp = buildLineInsertParams(requestId, so,
-                    (String) approver.get("approverId"), (String) approver.get("approverName"),
-                    (String) approver.get("approverPosition"), (String) approver.get("approverDept"),
-                    (String) approver.get("approverLabel"), ls, (String) approver.get("stepType"),
+                    (String) approver.get("approver_id"), (String) approver.get("approver_name"),
+                    (String) approver.get("approver_position"), (String) approver.get("approver_dept"),
+                    (String) approver.get("approver_label"), ls, (String) approver.get("step_type"),
                     false, companyCode);
             sqlSession.insert("approval.insertLine", lp);
         }
 
         // 첫 step이 notification이면 자동 통과
         String firstStepType = normalized.stream()
-                .filter(a -> toInt(a.get("stepOrder")) == firstStep)
-                .map(a -> (String) a.get("stepType"))
+                .filter(a -> toInt(a.get("step_order")) == firstStep)
+                .map(a -> (String) a.get("step_type"))
                 .findFirst().orElse("approval");
 
         if ("notification".equals(firstStepType)) {
             Map<String, Object> notifP = new HashMap<>();
-            notifP.put("requestId",  requestId);
-            notifP.put("stepOrder",  firstStep);
-            notifP.put("companyCode", companyCode);
+            notifP.put("request_id",  requestId);
+            notifP.put("step_order",  firstStep);
+            notifP.put("company_code", companyCode);
             sqlSession.update("approval.approveNotificationLines", notifP);
             activateNextStep(requestId, firstStep, totalSteps, companyCode, userId, null);
         }
 
         if (!"post".equals(approvalType)) {
             Map<String, Object> statusP = new HashMap<>();
-            statusP.put("requestId",  requestId);
+            statusP.put("request_id",  requestId);
             statusP.put("status",     "in_progress");
-            statusP.put("companyCode", companyCode);
+            statusP.put("company_code", companyCode);
             sqlSession.update("approval.updateRequestStatus", statusP);
             syncApprovalStatusToTarget(requestId, "in_progress", companyCode);
         } else {
@@ -305,13 +305,13 @@ public class ApprovalService extends BaseService {
 
     @Transactional
     public void cancelRequest(Map<String, Object> params) {
-        long   requestId   = toLong(params.get("requestId"));
-        String companyCode = (String) params.get("companyCode");
-        String userId      = (String) params.get("userId");
+        long   requestId   = toLong(params.get("request_id"));
+        String companyCode = (String) params.get("company_code");
+        String userId      = (String) params.get("user_id");
 
         Map<String, Object> reqP = new HashMap<>();
-        reqP.put("requestId",  requestId);
-        reqP.put("companyCode", companyCode);
+        reqP.put("request_id",  requestId);
+        reqP.put("company_code", companyCode);
         Map<String, Object> request = sqlSession.selectOne("approval.selectRequestById", reqP);
         if (request == null) throw new IllegalArgumentException("결재 요청을 찾을 수 없습니다.");
         if (!userId.equals(String.valueOf(request.get("requester_id"))))
@@ -326,14 +326,14 @@ public class ApprovalService extends BaseService {
 
     @Transactional
     public void postApprove(Map<String, Object> params) {
-        long   requestId   = toLong(params.get("requestId"));
-        String companyCode = (String) params.get("companyCode");
-        String userId      = (String) params.get("userId");
+        long   requestId   = toLong(params.get("request_id"));
+        String companyCode = (String) params.get("company_code");
+        String userId      = (String) params.get("user_id");
         String comment     = (String) params.get("comment");
 
         Map<String, Object> reqP = new HashMap<>();
-        reqP.put("requestId",  requestId);
-        reqP.put("companyCode", companyCode);
+        reqP.put("request_id",  requestId);
+        reqP.put("company_code", companyCode);
         Map<String, Object> request = sqlSession.selectOne("approval.selectRequestById", reqP);
         if (request == null) throw new IllegalArgumentException("결재 요청을 찾을 수 없습니다.");
         if (!"post".equals(request.get("approval_type")))
@@ -346,9 +346,9 @@ public class ApprovalService extends BaseService {
         if (pending > 0) throw new IllegalArgumentException("모든 결재자의 승인이 완료되지 않았습니다.");
 
         Map<String, Object> p = new HashMap<>();
-        p.put("requestId",  requestId);
-        p.put("companyCode", companyCode);
-        p.put("userId",     userId);
+        p.put("request_id",  requestId);
+        p.put("company_code", companyCode);
+        p.put("user_id",     userId);
         p.put("comment",    comment);
         sqlSession.update("approval.postApproveRequest", p);
         syncApprovalStatusToTarget(requestId, "approved", companyCode);
@@ -364,16 +364,16 @@ public class ApprovalService extends BaseService {
 
     @Transactional
     public void processApproval(Map<String, Object> params) {
-        String companyCode  = (String) params.get("companyCode");
-        String userId       = (String) params.get("userId");
-        long   lineId       = toLong(params.get("lineId"));
+        String companyCode  = (String) params.get("company_code");
+        String userId       = (String) params.get("user_id");
+        long   lineId       = toLong(params.get("line_id"));
         String action       = (String) params.get("action");
         String comment      = (String) params.get("comment");
         String proxyReason  = (String) params.get("proxy_reason");
 
         Map<String, Object> lockP = new HashMap<>();
-        lockP.put("lineId",     lineId);
-        lockP.put("companyCode", companyCode);
+        lockP.put("line_id",     lineId);
+        lockP.put("company_code", companyCode);
         Map<String, Object> line = sqlSession.selectOne("approval.selectLineByIdForUpdate", lockP);
         if (line == null)           throw new IllegalArgumentException("결재 라인을 찾을 수 없습니다.");
         if (!"pending".equals(line.get("status"))) throw new IllegalArgumentException("대기 중인 결재만 처리할 수 있습니다.");
@@ -391,9 +391,9 @@ public class ApprovalService extends BaseService {
                 proxyReasonVal = proxyReason != null ? proxyReason : "최고관리자 대리 처리";
             } else {
                 Map<String, Object> proxyP = new HashMap<>();
-                proxyP.put("originalUserId", approverId);
-                proxyP.put("proxyUserId",    userId);
-                proxyP.put("companyCode",    lineCC);
+                proxyP.put("original_user_id", approverId);
+                proxyP.put("proxy_user_id",    userId);
+                proxyP.put("company_code",    lineCC);
                 Map<String, Object> proxy = sqlSession.selectOne("approval.selectActiveProxyForLine", proxyP);
                 if (proxy == null) throw new IllegalArgumentException("본인이 결재자로 지정된 건만 처리할 수 있습니다.");
                 proxyFor      = approverId;
@@ -404,16 +404,16 @@ public class ApprovalService extends BaseService {
 
         // 현재 라인 업데이트
         Map<String, Object> updLineP = new HashMap<>();
-        updLineP.put("lineId",      lineId);
+        updLineP.put("line_id",      lineId);
         updLineP.put("status",      action);
         updLineP.put("comment",     comment);
-        updLineP.put("proxyFor",    proxyFor);
-        updLineP.put("proxyReason", proxyReasonVal);
-        updLineP.put("companyCode", lineCC);
+        updLineP.put("proxy_for",    proxyFor);
+        updLineP.put("proxy_reason", proxyReasonVal);
+        updLineP.put("company_code", lineCC);
         sqlSession.update("approval.updateLine", updLineP);
 
         Map<String, Object> reqForUpdate = sqlSession.selectOne("approval.selectRequestByIdForUpdate",
-                Map.of("requestId", requestId, "companyCode", lineCC));
+                Map.of("request_id", requestId, "company_code", lineCC));
         if (reqForUpdate == null) return;
 
         int    totalSteps = toInt(reqForUpdate.get("total_steps"));
@@ -422,34 +422,34 @@ public class ApprovalService extends BaseService {
 
         if ("rejected".equals(action)) {
             Map<String, Object> rejP = new HashMap<>();
-            rejP.put("requestId",  requestId);
-            rejP.put("companyCode", lineCC);
-            rejP.put("userId",     userId);
+            rejP.put("request_id",  requestId);
+            rejP.put("company_code", lineCC);
+            rejP.put("user_id",     userId);
             rejP.put("comment",    comment);
             sqlSession.update("approval.rejectRequest", rejP);
             Map<String, Object> skipP = new HashMap<>();
-            skipP.put("requestId",  requestId);
-            skipP.put("lineId",     lineId);
-            skipP.put("companyCode", lineCC);
+            skipP.put("request_id",  requestId);
+            skipP.put("line_id",     lineId);
+            skipP.put("company_code", lineCC);
             sqlSession.update("approval.skipRemainingLines", skipP);
             syncApprovalStatusToTarget(requestId, "rejected", lineCC);
         } else {
             if (isLegacy) {
                 Number remainingNum = sqlSession.selectOne("approval.countRemainingLinesInStep",
-                        Map.of("requestId", requestId, "stepOrder", stepOrder, "lineId", lineId, "companyCode", lineCC));
+                        Map.of("request_id", requestId, "step_order", stepOrder, "line_id", lineId, "company_code", lineCC));
                 int remaining = remainingNum != null ? remainingNum.intValue() : 0;
                 if (remaining == 0) {
                     Map<String, Object> complP = new HashMap<>();
-                    complP.put("requestId",  requestId);
-                    complP.put("companyCode", lineCC);
-                    complP.put("userId",     userId);
+                    complP.put("request_id",  requestId);
+                    complP.put("company_code", lineCC);
+                    complP.put("user_id",     userId);
                     complP.put("comment",    comment);
                     sqlSession.update("approval.completeRequest", complP);
                     syncApprovalStatusToTarget(requestId, "approved", lineCC);
                 }
             } else if ("consensus".equals(stepType)) {
                 Number remainingNum = sqlSession.selectOne("approval.countRemainingLinesInStep",
-                        Map.of("requestId", requestId, "stepOrder", stepOrder, "lineId", lineId, "companyCode", lineCC));
+                        Map.of("request_id", requestId, "step_order", stepOrder, "line_id", lineId, "company_code", lineCC));
                 int remaining = remainingNum != null ? remainingNum.intValue() : 0;
                 if (remaining == 0) activateNextStep(requestId, stepOrder, totalSteps, lineCC, userId, comment);
             } else {
@@ -484,7 +484,7 @@ public class ApprovalService extends BaseService {
         sqlSession.insert("approval.insertProxySetting", params);
         Map<String, Object> fetch = new HashMap<>();
         fetch.put("id",          params.get("id"));
-        fetch.put("companyCode", params.get("companyCode"));
+        fetch.put("company_code", params.get("company_code"));
         return sqlSession.selectOne("approval.selectProxyById", fetch);
     }
 
@@ -492,7 +492,7 @@ public class ApprovalService extends BaseService {
     public Map<String, Object> updateProxySetting(Map<String, Object> params) {
         Map<String, Object> checkP = new HashMap<>();
         checkP.put("id",          params.get("id"));
-        checkP.put("companyCode", params.get("companyCode"));
+        checkP.put("company_code", params.get("company_code"));
         if (sqlSession.selectOne("approval.selectProxyById", checkP) == null)
             throw new IllegalArgumentException("대결 위임 설정을 찾을 수 없습니다.");
         sqlSession.update("approval.updateProxySetting", params);
@@ -517,9 +517,9 @@ public class ApprovalService extends BaseService {
                                   String companyCode, String userId, String comment) {
         int nextStep = currentStep + 1;
         Map<String, Object> complP = new HashMap<>();
-        complP.put("requestId",  requestId);
-        complP.put("companyCode", companyCode);
-        complP.put("userId",     userId);
+        complP.put("request_id",  requestId);
+        complP.put("company_code", companyCode);
+        complP.put("user_id",     userId);
         complP.put("comment",    comment);
 
         if (nextStep > totalSteps) {
@@ -529,7 +529,7 @@ public class ApprovalService extends BaseService {
         }
 
         List<Map<String, Object>> nextLines = sqlSession.selectList("approval.selectLinesForStep",
-                Map.of("requestId", requestId, "stepOrder", nextStep, "companyCode", companyCode));
+                Map.of("request_id", requestId, "step_order", nextStep, "company_code", companyCode));
 
         if (nextLines.isEmpty()) {
             sqlSession.update("approval.completeRequest", complP);
@@ -541,21 +541,21 @@ public class ApprovalService extends BaseService {
 
         if ("notification".equals(nextStepType)) {
             Map<String, Object> notifP = new HashMap<>();
-            notifP.put("requestId",  requestId);
-            notifP.put("stepOrder",  nextStep);
-            notifP.put("companyCode", companyCode);
+            notifP.put("request_id",  requestId);
+            notifP.put("step_order",  nextStep);
+            notifP.put("company_code", companyCode);
             sqlSession.update("approval.approveNotificationLines", notifP);
             Map<String, Object> stepP = new HashMap<>();
-            stepP.put("requestId",  requestId);
-            stepP.put("nextStep",   nextStep);
-            stepP.put("companyCode", companyCode);
+            stepP.put("request_id",  requestId);
+            stepP.put("next_step",   nextStep);
+            stepP.put("company_code", companyCode);
             sqlSession.update("approval.updateRequestCurrentStep", stepP);
             activateNextStep(requestId, nextStep, totalSteps, companyCode, userId, comment);
         } else {
             Map<String, Object> actP = new HashMap<>();
-            actP.put("requestId",  requestId);
-            actP.put("nextStep",   nextStep);
-            actP.put("companyCode", companyCode);
+            actP.put("request_id",  requestId);
+            actP.put("next_step",   nextStep);
+            actP.put("company_code", companyCode);
             sqlSession.update("approval.activateNextStepLines", actP);
             sqlSession.update("approval.updateRequestCurrentStep", actP);
         }
@@ -564,8 +564,8 @@ public class ApprovalService extends BaseService {
     private void syncApprovalStatusToTarget(long requestId, String newStatus, String companyCode) {
         try {
             Map<String, Object> syncP = new HashMap<>();
-            syncP.put("requestId",  requestId);
-            syncP.put("companyCode", companyCode);
+            syncP.put("request_id",  requestId);
+            syncP.put("company_code", companyCode);
             Map<String, Object> req = sqlSession.selectOne("approval.selectRequestForSync", syncP);
             if (req == null) return;
 
@@ -579,7 +579,7 @@ public class ApprovalService extends BaseService {
             if (safeTable.isEmpty()) return;
 
             Number hasColNum = sqlSession.selectOne("approval.checkTargetTableHasApprovalStatusColumn",
-                    Map.of("tableName", safeTable));
+                    Map.of("table_name", safeTable));
             int hasCol = hasColNum != null ? hasColNum.intValue() : 0;
             if (hasCol == 0) return;
 
@@ -593,10 +593,10 @@ public class ApprovalService extends BaseService {
             String businessStatus = statusMap.getOrDefault(newStatus, newStatus);
 
             Map<String, Object> updP = new HashMap<>();
-            updP.put("tableName",      safeTable);
-            updP.put("approvalStatus", businessStatus);
-            updP.put("targetRecordId", targetRecordId);
-            updP.put("companyCode",    companyCode);
+            updP.put("table_name",      safeTable);
+            updP.put("approval_status", businessStatus);
+            updP.put("target_record_id", targetRecordId);
+            updP.put("company_code",    companyCode);
             sqlSession.update("approval.updateTargetTableApprovalStatus", updP);
 
             if ("approved".equals(newStatus))
@@ -612,26 +612,26 @@ public class ApprovalService extends BaseService {
         for (int i = 0; i < approvers.size(); i++) {
             Map<String, Object> a    = approvers.get(i);
             Map<String, Object> norm = new HashMap<>();
-            norm.put("approverId",       a.get("approver_id"));
-            norm.put("approverName",     a.get("approver_name"));
-            norm.put("approverPosition", a.get("approver_position"));
-            norm.put("approverDept",     a.get("approver_dept"));
+            norm.put("approver_id",       a.get("approver_id"));
+            norm.put("approver_name",     a.get("approver_name"));
+            norm.put("approver_position", a.get("approver_position"));
+            norm.put("approver_dept",     a.get("approver_dept"));
 
             if ("consensus".equals(approvalType) && !hasExplicitStepType) {
-                norm.put("approverLabel", a.getOrDefault("approver_label", "합의 결재"));
-                norm.put("stepOrder", 1);
-                norm.put("stepType",  "consensus");
+                norm.put("approver_label", a.getOrDefault("approver_label", "합의 결재"));
+                norm.put("step_order", 1);
+                norm.put("step_type",  "consensus");
             } else if (hasExplicitStepType) {
-                norm.put("approverLabel", a.get("approver_label"));
+                norm.put("approver_label", a.get("approver_label"));
                 Object so = a.get("step_order");
-                norm.put("stepOrder", so != null ? toInt(so) : i + 1);
-                norm.put("stepType",  a.getOrDefault("step_type", "approval"));
+                norm.put("step_order", so != null ? toInt(so) : i + 1);
+                norm.put("step_type",  a.getOrDefault("step_type", "approval"));
             } else {
                 Object label = a.get("approver_label");
-                norm.put("approverLabel", label != null ? label : (i + 1) + "차 결재");
+                norm.put("approver_label", label != null ? label : (i + 1) + "차 결재");
                 Object so = a.get("step_order");
-                norm.put("stepOrder", so != null ? toInt(so) : i + 1);
-                norm.put("stepType", "approval");
+                norm.put("step_order", so != null ? toInt(so) : i + 1);
+                norm.put("step_type", "approval");
             }
             result.add(norm);
         }
@@ -647,8 +647,8 @@ public class ApprovalService extends BaseService {
 
     private Map<String, Object> fetchRequest(long requestId) {
         Map<String, Object> p = new HashMap<>();
-        p.put("requestId",  requestId);
-        p.put("companyCode", "*");
+        p.put("request_id",  requestId);
+        p.put("company_code", "*");
         return sqlSession.selectOne("approval.selectRequestById", p);
     }
 
@@ -659,20 +659,20 @@ public class ApprovalService extends BaseService {
         Map<String, Object> p = new HashMap<>();
         p.put("title",             src.get("title"));
         p.put("description",       src.get("description"));
-        p.put("definitionId",      src.get("definition_id"));
-        p.put("templateId",        src.get("template_id"));
-        p.put("targetTable",       src.get("target_table"));
-        p.put("targetRecordId",    safeRecordId);
-        p.put("targetRecordData",  recordDataJson);
+        p.put("definition_id",      src.get("definition_id"));
+        p.put("template_id",        src.get("template_id"));
+        p.put("target_table",       src.get("target_table"));
+        p.put("target_record_id",    safeRecordId);
+        p.put("target_record_data",  recordDataJson);
         p.put("status",            status);
-        p.put("totalSteps",        totalSteps);
-        p.put("approvalType",      approvalType);
-        p.put("requesterId",       userId);
-        p.put("requesterName",     userName);
-        p.put("requesterDept",     deptName);
-        p.put("screenId",          src.get("screen_id"));
-        p.put("buttonComponentId", src.get("button_component_id"));
-        p.put("companyCode",       companyCode);
+        p.put("total_steps",        totalSteps);
+        p.put("approval_type",      approvalType);
+        p.put("requester_id",       userId);
+        p.put("requester_name",     userName);
+        p.put("requester_dept",     deptName);
+        p.put("screen_id",          src.get("screen_id"));
+        p.put("button_component_id", src.get("button_component_id"));
+        p.put("company_code",       companyCode);
         return p;
     }
 
@@ -681,17 +681,17 @@ public class ApprovalService extends BaseService {
             String approverPosition, String approverDept, String approverLabel,
             String status, String stepType, boolean alreadyProcessed, String companyCode) {
         Map<String, Object> p = new HashMap<>();
-        p.put("requestId",        requestId);
-        p.put("stepOrder",        stepOrder);
-        p.put("approverId",       approverId);
-        p.put("approverName",     approverName);
-        p.put("approverPosition", approverPosition);
-        p.put("approverDept",     approverDept);
-        p.put("approverLabel",    approverLabel);
+        p.put("request_id",        requestId);
+        p.put("step_order",        stepOrder);
+        p.put("approver_id",       approverId);
+        p.put("approver_name",     approverName);
+        p.put("approver_position", approverPosition);
+        p.put("approver_dept",     approverDept);
+        p.put("approver_label",    approverLabel);
         p.put("status",           status);
-        p.put("stepType",         stepType);
-        p.put("processedAt",      alreadyProcessed ? Boolean.TRUE : null);
-        p.put("companyCode",      companyCode);
+        p.put("step_type",         stepType);
+        p.put("processed_at",      alreadyProcessed ? Boolean.TRUE : null);
+        p.put("company_code",      companyCode);
         return p;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/AuditLogService.java b/backend-spring/src/main/java/com/erp/service/AuditLogService.java
index ebbbb8e5..0a8d08ec 100644
--- a/backend-spring/src/main/java/com/erp/service/AuditLogService.java
+++ b/backend-spring/src/main/java/com/erp/service/AuditLogService.java
@@ -51,14 +51,14 @@ public class AuditLogService extends BaseService {
      */
     public Map<String, Object> getStats(String companyCode, int days) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("days", days);
 
         Map<String, Object> result = new HashMap<>();
-        result.put("dailyCounts", sqlSession.selectList("auditLog.selectDailyCounts", params));
-        result.put("resourceTypeCounts", sqlSession.selectList("auditLog.selectResourceTypeCounts", params));
-        result.put("actionCounts", sqlSession.selectList("auditLog.selectActionCounts", params));
-        result.put("topUsers", sqlSession.selectList("auditLog.selectTopUsers", params));
+        result.put("daily_counts", sqlSession.selectList("auditLog.selectDailyCounts", params));
+        result.put("resource_type_counts", sqlSession.selectList("auditLog.selectResourceTypeCounts", params));
+        result.put("action_counts", sqlSession.selectList("auditLog.selectActionCounts", params));
+        result.put("top_users", sqlSession.selectList("auditLog.selectTopUsers", params));
         return result;
     }
 
@@ -67,8 +67,8 @@ public class AuditLogService extends BaseService {
      */
     public List<Map<String, Object>> getAuditLogUsers(String companyCode, boolean isSuperAdmin) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("excludeWildcard", !isSuperAdmin);
+        params.put("company_code", companyCode);
+        params.put("exclude_wildcard", !isSuperAdmin);
         return sqlSession.selectList("auditLog.selectAuditLogUsers", params);
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/AuthService.java b/backend-spring/src/main/java/com/erp/service/AuthService.java
index 3e2f92a0..af2e6932 100644
--- a/backend-spring/src/main/java/com/erp/service/AuthService.java
+++ b/backend-spring/src/main/java/com/erp/service/AuthService.java
@@ -36,15 +36,15 @@ public class AuthService extends BaseService {
      * Node.js AuthService.processLogin() 포팅
      */
     public Map<String, Object> login(Map<String, Object> params) {
-        String userId = (String) params.get("userId");
+        String userId = (String) params.get("user_id");
         String password = (String) params.get("password");
-        String remoteAddr = (String) params.getOrDefault("remoteAddr", "unknown");
+        String remoteAddr = (String) params.getOrDefault("remote_addr", "unknown");
 
         // 1. 비밀번호 검증
         boolean loginSuccess = false;
         String errorReason = null;
 
-        Map<String, Object> pwRow = sqlSession.selectOne("auth.selectUserPassword", Map.of("userId", userId));
+        Map<String, Object> pwRow = sqlSession.selectOne("auth.selectUserPassword", Map.of("user_id", userId));
         if (pwRow == null) {
             errorReason = "사용자가 존재하지 않습니다.";
         } else {
@@ -63,15 +63,15 @@ public class AuthService extends BaseService {
         // 2. 로그인 로그 기록 (실패해도 로그인 프로세스 유지)
         try {
             Map<String, Object> logParams = new HashMap<>();
-            logParams.put("systemName", "PMS");
-            logParams.put("userId", userId);
-            logParams.put("loginResult", loginSuccess);
-            logParams.put("errorMessage", errorReason);
-            logParams.put("remoteAddr", remoteAddr);
-            logParams.put("recptnDt", null);
-            logParams.put("recptnRsltDtl", null);
-            logParams.put("recptnRslt", null);
-            logParams.put("recptnRsltCd", null);
+            logParams.put("system_name", "PMS");
+            logParams.put("user_id", userId);
+            logParams.put("login_result", loginSuccess);
+            logParams.put("error_message", errorReason);
+            logParams.put("remote_addr", remoteAddr);
+            logParams.put("recptn_dt", null);
+            logParams.put("recptn_rslt_dtl", null);
+            logParams.put("recptn_rslt", null);
+            logParams.put("recptn_rslt_cd", null);
             sqlSession.insert("auth.insertLoginLog", logParams);
         } catch (Exception e) {
             log.warn("로그인 로그 기록 실패 (무시): {}", e.getMessage());
@@ -79,17 +79,17 @@ public class AuthService extends BaseService {
 
         if (!loginSuccess) {
             Map<String, Object> result = new HashMap<>();
-            result.put("loginFailed", true);
-            result.put("errorReason", errorReason);
+            result.put("login_failed", true);
+            result.put("error_reason", errorReason);
             return result;
         }
 
         // 3. 사용자 정보 조회
-        Map<String, Object> userInfoRow = sqlSession.selectOne("auth.selectUserInfo", Map.of("userId", userId));
+        Map<String, Object> userInfoRow = sqlSession.selectOne("auth.selectUserInfo", Map.of("user_id", userId));
         if (userInfoRow == null) {
             Map<String, Object> result = new HashMap<>();
-            result.put("loginFailed", true);
-            result.put("errorReason", "사용자 정보를 조회할 수 없습니다.");
+            result.put("login_failed", true);
+            result.put("error_reason", "사용자 정보를 조회할 수 없습니다.");
             return result;
         }
 
@@ -101,29 +101,29 @@ public class AuthService extends BaseService {
         String companyName = "";
         if (companyCode != null) {
             Map<String, Object> companyRow = sqlSession.selectOne("auth.selectCompanyName",
-                    Map.of("companyCode", companyCode));
+                    Map.of("company_code", companyCode));
             companyName = companyRow != null ? getStr(companyRow, "company_name", "") : "";
         }
 
         // 5. JWT 토큰 생성 — Node.js 동일 페이로드 구조
         Map<String, Object> personBean = new HashMap<>();
-        personBean.put("userId",       userId);
-        personBean.put("userName",     getStr(userInfoRow, "user_name", ""));
-        personBean.put("deptName",     getStr(userInfoRow, "dept_name", ""));
-        personBean.put("companyCode",  companyCode);
-        personBean.put("companyName",  companyName);
-        personBean.put("userType",     userType);
-        personBean.put("userTypeName", getStr(userInfoRow, "user_type_name", "일반사용자"));
+        personBean.put("user_id",       userId);
+        personBean.put("user_name",     getStr(userInfoRow, "user_name", ""));
+        personBean.put("dept_name",     getStr(userInfoRow, "dept_name", ""));
+        personBean.put("company_code",  companyCode);
+        personBean.put("company_name",  companyName);
+        personBean.put("user_type",     userType);
+        personBean.put("user_type_name", getStr(userInfoRow, "user_type_name", "일반사용자"));
         String token = jwtTokenProvider.generateToken(personBean);
 
         // 6. firstMenuPath 계산 (Node.js authController 동일 로직)
         String firstMenuPath = null;
         try {
             Map<String, Object> menuParams = new HashMap<>();
-            menuParams.put("companyCode", companyCode);
-            menuParams.put("userType", userType);
-            menuParams.put("userLang", "ko");
-            List<Map<String, Object>> menuList = sqlSession.selectList(NS_ADMIN + "selectUserMenuList", menuParams);
+            menuParams.put("company_code", companyCode);
+            menuParams.put("user_type", userType);
+            menuParams.put("user_lang", "ko");
+            List<Map<String, Object>> menuList = sqlSession.selectList(NS_ADMIN + "select_user_menu_list", menuParams);
             firstMenuPath = menuList.stream()
                     .filter(m -> {
                         Object levObj = m.get("lev");
@@ -141,14 +141,14 @@ public class AuthService extends BaseService {
         String popLandingPath = null;
         try {
             Map<String, Object> popParams = new HashMap<>();
-            popParams.put("companyCode", companyCode);
-            popParams.put("userType", userType);
-            Map<String, Object> parentMenu = sqlSession.selectOne(NS_ADMIN + "selectPopParentMenu", popParams);
+            popParams.put("company_code", companyCode);
+            popParams.put("user_type", userType);
+            Map<String, Object> parentMenu = sqlSession.selectOne(NS_ADMIN + "select_pop_parent_menu", popParams);
             if (parentMenu != null) {
                 Map<String, Object> childParams = new HashMap<>();
-                childParams.put("parentObjid", parentMenu.get("objid"));
-                childParams.put("parentCompanyCode", parentMenu.get("company_code"));
-                List<Map<String, Object>> childMenus = sqlSession.selectList(NS_ADMIN + "selectPopChildMenus", childParams);
+                childParams.put("parent_objid", parentMenu.get("objid"));
+                childParams.put("parent_company_code", parentMenu.get("company_code"));
+                List<Map<String, Object>> childMenus = sqlSession.selectList(NS_ADMIN + "select_pop_child_menus", childParams);
                 Map<String, Object> landingMenu = childMenus.stream()
                         .filter(m -> {
                             Object desc = m.get("menu_desc");
@@ -169,16 +169,16 @@ public class AuthService extends BaseService {
 
         // 8. 응답 data 구성 (Node.js 응답 형식 일치)
         Map<String, Object> userInfo = new HashMap<>();
-        userInfo.put("userId", userId);
-        userInfo.put("userName", getStr(userInfoRow, "user_name", ""));
-        userInfo.put("deptName", getStr(userInfoRow, "dept_name", ""));
-        userInfo.put("companyCode", companyCode);
+        userInfo.put("user_id", userId);
+        userInfo.put("user_name", getStr(userInfoRow, "user_name", ""));
+        userInfo.put("dept_name", getStr(userInfoRow, "dept_name", ""));
+        userInfo.put("company_code", companyCode);
 
         Map<String, Object> data = new HashMap<>();
-        data.put("userInfo", userInfo);
+        data.put("user_info", userInfo);
         data.put("token", token);
-        data.put("firstMenuPath", firstMenuPath);
-        data.put("popLandingPath", popLandingPath);
+        data.put("first_menu_path", firstMenuPath);
+        data.put("pop_landing_path", popLandingPath);
 
         log.info("로그인 성공: {} ({})", userId, remoteAddr);
         return data;
@@ -191,13 +191,13 @@ public class AuthService extends BaseService {
     public Map<String, Object> refreshToken(String token) {
         Claims claims = jwtTokenProvider.getClaims(token);
         Map<String, Object> personBean = new HashMap<>();
-        personBean.put("userId",       claims.get("userId", String.class));
-        personBean.put("userName",     claims.get("userName", String.class));
-        personBean.put("deptName",     claims.get("deptName", String.class));
-        personBean.put("companyCode",  claims.get("companyCode", String.class));
-        personBean.put("companyName",  claims.get("companyName", String.class));
-        personBean.put("userType",     claims.get("userType", String.class));
-        personBean.put("userTypeName", claims.get("userTypeName", String.class));
+        personBean.put("user_id",       claims.get("user_id", String.class));
+        personBean.put("user_name",     claims.get("user_name", String.class));
+        personBean.put("dept_name",     claims.get("dept_name", String.class));
+        personBean.put("company_code",  claims.get("company_code", String.class));
+        personBean.put("company_name",  claims.get("company_name", String.class));
+        personBean.put("user_type",     claims.get("user_type", String.class));
+        personBean.put("user_type_name", claims.get("user_type_name", String.class));
 
         String newToken = jwtTokenProvider.generateToken(personBean);
 
@@ -212,17 +212,17 @@ public class AuthService extends BaseService {
      */
     public Map<String, Object> getUserInfo(String token) {
         Claims claims = jwtTokenProvider.getClaims(token);
-        String userId = claims.get("userId", String.class);
-        String jwtCompanyCode = claims.get("companyCode", String.class);
-        String jwtUserType = claims.get("userType", String.class);
+        String userId = claims.get("user_id", String.class);
+        String jwtCompanyCode = claims.get("company_code", String.class);
+        String jwtUserType = claims.get("user_type", String.class);
 
-        Map<String, Object> dbUser = sqlSession.selectOne("auth.selectUserInfo", Map.of("userId", userId));
+        Map<String, Object> dbUser = sqlSession.selectOne("auth.selectUserInfo", Map.of("user_id", userId));
         if (dbUser == null) {
             return null;
         }
 
         // 권한명 목록 조회
-        List<Map<String, Object>> authList = sqlSession.selectList("auth.selectUserAuth", Map.of("userId", userId));
+        List<Map<String, Object>> authList = sqlSession.selectList("auth.selectUserAuth", Map.of("user_id", userId));
         String authNames = authList.stream()
                 .map(a -> getStr(a, "auth_name", ""))
                 .collect(Collectors.joining(","));
@@ -240,19 +240,19 @@ public class AuthService extends BaseService {
         }
 
         Map<String, Object> result = new HashMap<>();
-        result.put("userId", userId);
-        result.put("userName", getStr(dbUser, "user_name", ""));
-        result.put("deptName", getStr(dbUser, "dept_name", ""));
-        result.put("companyCode", companyCode);
+        result.put("user_id", userId);
+        result.put("user_name", getStr(dbUser, "user_name", ""));
+        result.put("dept_name", getStr(dbUser, "dept_name", ""));
         result.put("company_code", companyCode);
-        result.put("userType", userType);
-        result.put("userTypeName", getStr(dbUser, "user_type_name", "일반사용자"));
+        result.put("company_code", companyCode);
+        result.put("user_type", userType);
+        result.put("user_type_name", getStr(dbUser, "user_type_name", "일반사용자"));
         result.put("email", getStr(dbUser, "email", ""));
         result.put("photo", photoStr);
         result.put("locale", getStr(dbUser, "locale", "KR"));
-        result.put("deptCode", dbUser.get("dept_code"));
-        result.put("authName", authNames);
-        result.put("isAdmin", "ADMIN".equals(userType) || "SUPER_ADMIN".equals(userType)
+        result.put("dept_code", dbUser.get("dept_code"));
+        result.put("auth_name", authNames);
+        result.put("is_admin", "ADMIN".equals(userType) || "SUPER_ADMIN".equals(userType)
                 || "COMPANY_ADMIN".equals(userType));
         return result;
     }
@@ -263,18 +263,18 @@ public class AuthService extends BaseService {
     public Map<String, Object> checkAuthStatus(String token) {
         Map<String, Object> result = new HashMap<>();
         if (token == null || !jwtTokenProvider.validateToken(token)) {
-            result.put("isLoggedIn", false);
-            result.put("isAdmin", false);
+            result.put("is_logged_in", false);
+            result.put("is_admin", false);
             return result;
         }
         Claims claims = jwtTokenProvider.getClaims(token);
-        String userId = claims.get("userId", String.class);
-        String userType = claims.get("userType", String.class);
+        String userId = claims.get("user_id", String.class);
+        String userType = claims.get("user_type", String.class);
         boolean isAdmin = "plm_admin".equals(userId) || "ADMIN".equals(userType)
                 || "SUPER_ADMIN".equals(userType);
 
-        result.put("isLoggedIn", true);
-        result.put("isAdmin", isAdmin);
+        result.put("is_logged_in", true);
+        result.put("is_admin", isAdmin);
         return result;
     }
 
@@ -284,15 +284,15 @@ public class AuthService extends BaseService {
     public void logout(String userId, String remoteAddr) {
         try {
             Map<String, Object> logParams = new HashMap<>();
-            logParams.put("systemName", "PMS");
-            logParams.put("userId", userId);
-            logParams.put("loginResult", false);
-            logParams.put("errorMessage", "로그아웃");
-            logParams.put("remoteAddr", remoteAddr);
-            logParams.put("recptnDt", null);
-            logParams.put("recptnRsltDtl", null);
-            logParams.put("recptnRslt", null);
-            logParams.put("recptnRsltCd", null);
+            logParams.put("system_name", "PMS");
+            logParams.put("user_id", userId);
+            logParams.put("login_result", false);
+            logParams.put("error_message", "로그아웃");
+            logParams.put("remote_addr", remoteAddr);
+            logParams.put("recptn_dt", null);
+            logParams.put("recptn_rslt_dtl", null);
+            logParams.put("recptn_rslt", null);
+            logParams.put("recptn_rslt_cd", null);
             sqlSession.insert("auth.insertLoginLog", logParams);
             log.info("로그아웃 완료: {} ({})", userId, remoteAddr);
         } catch (Exception e) {
@@ -305,8 +305,8 @@ public class AuthService extends BaseService {
      */
     public Map<String, Object> switchCompany(String token, String targetCompanyCode) {
         Claims claims = jwtTokenProvider.getClaims(token);
-        String userId = claims.get("userId", String.class);
-        String userType = claims.get("userType", String.class);
+        String userId = claims.get("user_id", String.class);
+        String userType = claims.get("user_type", String.class);
 
         if (!"SUPER_ADMIN".equals(userType)) {
             throw new IllegalArgumentException("회사 전환은 최고 관리자(SUPER_ADMIN)만 가능합니다.");
@@ -315,26 +315,26 @@ public class AuthService extends BaseService {
         // 회사 코드 존재 여부 확인 ("*" 제외)
         if (!"*".equals(targetCompanyCode)) {
             Map<String, Object> company = sqlSession.selectOne("auth.selectCompanyByCode",
-                    Map.of("companyCode", targetCompanyCode));
+                    Map.of("company_code", targetCompanyCode));
             if (company == null) {
                 throw new IllegalArgumentException("존재하지 않는 회사 코드입니다.");
             }
         }
 
         Map<String, Object> personBean = new HashMap<>();
-        personBean.put("userId",       userId);
-        personBean.put("userName",     claims.get("userName", String.class));
-        personBean.put("deptName",     claims.get("deptName", String.class));
-        personBean.put("companyCode",  targetCompanyCode);
-        personBean.put("companyName",  claims.get("companyName", String.class));
-        personBean.put("userType",     userType);
-        personBean.put("userTypeName", claims.get("userTypeName", String.class));
+        personBean.put("user_id",       userId);
+        personBean.put("user_name",     claims.get("user_name", String.class));
+        personBean.put("dept_name",     claims.get("dept_name", String.class));
+        personBean.put("company_code",  targetCompanyCode);
+        personBean.put("company_name",  claims.get("company_name", String.class));
+        personBean.put("user_type",     userType);
+        personBean.put("user_type_name", claims.get("user_type_name", String.class));
         String newToken = jwtTokenProvider.generateToken(personBean);
         log.info("회사 전환 성공: {} → {}", userId, targetCompanyCode);
 
         Map<String, Object> result = new HashMap<>();
         result.put("token", newToken);
-        result.put("companyCode", targetCompanyCode);
+        result.put("company_code", targetCompanyCode);
         return result;
     }
 
@@ -343,15 +343,15 @@ public class AuthService extends BaseService {
      */
     @Transactional
     public void signupDriver(Map<String, Object> params) {
-        String userId = (String) params.get("userId");
-        String vehicleNumber = (String) params.get("vehicleNumber");
+        String userId = (String) params.get("user_id");
+        String vehicleNumber = (String) params.get("vehicle_number");
 
         // 아이디 중복 확인
-        if (sqlSession.selectOne("auth.selectUserById", Map.of("userId", userId)) != null) {
+        if (sqlSession.selectOne("auth.selectUserById", Map.of("user_id", userId)) != null) {
             throw new IllegalArgumentException("이미 존재하는 아이디입니다.");
         }
         // 차량번호 중복 확인
-        if (sqlSession.selectOne("auth.selectVehicleByNumber", Map.of("vehicleNumber", vehicleNumber)) != null) {
+        if (sqlSession.selectOne("auth.selectVehicleByNumber", Map.of("vehicle_number", vehicleNumber)) != null) {
             throw new IllegalArgumentException("이미 등록된 차량번호입니다.");
         }
 
@@ -359,8 +359,8 @@ public class AuthService extends BaseService {
         String hashedPassword = md5((String) params.get("password"));
 
         Map<String, Object> insertParams = new HashMap<>(params);
-        insertParams.put("userPassword", hashedPassword);
-        insertParams.put("signupCompanyCode", "COMPANY_13");
+        insertParams.put("user_password", hashedPassword);
+        insertParams.put("signup_company_code", "COMPANY_13");
 
         sqlSession.insert("auth.insertUserSignup", insertParams);
         sqlSession.insert("auth.insertVehicle", insertParams);
diff --git a/backend-spring/src/main/java/com/erp/service/BarcodeLabelService.java b/backend-spring/src/main/java/com/erp/service/BarcodeLabelService.java
index 3465ee8b..d4fba96f 100644
--- a/backend-spring/src/main/java/com/erp/service/BarcodeLabelService.java
+++ b/backend-spring/src/main/java/com/erp/service/BarcodeLabelService.java
@@ -20,7 +20,7 @@ public class BarcodeLabelService extends BaseService {
     // 라벨 목록 조회
     // ──────────────────────────────────────────────────────────────────────────
     public Map<String, Object> getBarcodeLabelList(Map<String, Object> params) {
-        if (params.get("useYn") == null) params.put("useYn", "Y");
+        if (params.get("use_yn") == null) params.put("use_yn", "Y");
         commonService.applyPagination(params);
         Number cntNum = sqlSession.selectOne("barcodeLabel.getBarcodeLabelListCnt", params);
         int totalCount = cntNum != null ? cntNum.intValue() : 0;
@@ -33,7 +33,7 @@ public class BarcodeLabelService extends BaseService {
     // ──────────────────────────────────────────────────────────────────────────
     public Map<String, Object> getBarcodeLabelInfo(String labelId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("labelId", labelId);
+        params.put("label_id", labelId);
         return sqlSession.selectOne("barcodeLabel.getBarcodeLabelInfo", params);
     }
 
@@ -60,17 +60,17 @@ public class BarcodeLabelService extends BaseService {
     @Transactional
     public Map<String, Object> insertBarcodeLabel(Map<String, Object> params) {
         String labelId = "LBL_" + UUID.randomUUID().toString().replace("-", "").substring(0, 20);
-        params.put("labelId", labelId);
+        params.put("label_id", labelId);
 
         int widthMm = 50;
         int heightMm = 30;
         String layoutJson = null;
 
         // templateId가 있으면 템플릿 치수/레이아웃 적용
-        Object templateId = params.get("templateId");
+        Object templateId = params.get("template_id");
         if (templateId != null && !templateId.toString().isBlank()) {
             Map<String, Object> tParams = new HashMap<>();
-            tParams.put("templateId", templateId.toString().trim());
+            tParams.put("template_id", templateId.toString().trim());
             Map<String, Object> template = sqlSession.selectOne("barcodeLabel.getBarcodeLabelTemplateInfo", tParams);
             if (template != null) {
                 widthMm = toInt(template.get("width_mm"), 50);
@@ -92,14 +92,14 @@ public class BarcodeLabelService extends BaseService {
             }
         }
 
-        params.put("widthMm", widthMm);
-        params.put("heightMm", heightMm);
-        params.put("layoutJson", layoutJson);
+        params.put("width_mm", widthMm);
+        params.put("height_mm", heightMm);
+        params.put("layout_json", layoutJson);
 
         sqlSession.insert("barcodeLabel.insertBarcodeLabel", params);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("labelId", labelId);
+        result.put("label_id", labelId);
         return result;
     }
 
@@ -108,7 +108,7 @@ public class BarcodeLabelService extends BaseService {
     // ──────────────────────────────────────────────────────────────────────────
     @Transactional
     public boolean updateBarcodeLabel(String labelId, Map<String, Object> params) {
-        params.put("labelId", labelId);
+        params.put("label_id", labelId);
         int updated = sqlSession.update("barcodeLabel.updateBarcodeLabel", params);
         return updated > 0;
     }
@@ -127,11 +127,11 @@ public class BarcodeLabelService extends BaseService {
             throw new IllegalArgumentException("레이아웃 직렬화 실패: " + e.getMessage());
         }
         Map<String, Object> params = new HashMap<>();
-        params.put("labelId", labelId);
-        params.put("widthMm", widthMm);
-        params.put("heightMm", heightMm);
-        params.put("layoutJson", layoutJson);
-        params.put("updatedBy", userId);
+        params.put("label_id", labelId);
+        params.put("width_mm", widthMm);
+        params.put("height_mm", heightMm);
+        params.put("layout_json", layoutJson);
+        params.put("updated_by", userId);
         sqlSession.update("barcodeLabel.updateBarcodeLabelLayout", params);
     }
 
@@ -141,7 +141,7 @@ public class BarcodeLabelService extends BaseService {
     @Transactional
     public boolean deleteBarcodeLabel(String labelId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("labelId", labelId);
+        params.put("label_id", labelId);
         int deleted = sqlSession.delete("barcodeLabel.deleteBarcodeLabel", params);
         return deleted > 0;
     }
@@ -156,9 +156,9 @@ public class BarcodeLabelService extends BaseService {
 
         String newLabelId = "LBL_" + UUID.randomUUID().toString().replace("-", "").substring(0, 20);
         Map<String, Object> params = new HashMap<>();
-        params.put("newLabelId", newLabelId);
-        params.put("labelId", labelId);
-        params.put("createdBy", userId);
+        params.put("new_label_id", newLabelId);
+        params.put("label_id", labelId);
+        params.put("created_by", userId);
 
         sqlSession.insert("barcodeLabel.copyBarcodeLabel", params);
         return newLabelId;
@@ -176,7 +176,7 @@ public class BarcodeLabelService extends BaseService {
     // ──────────────────────────────────────────────────────────────────────────
     public Map<String, Object> getBarcodeLabelTemplateInfo(String templateId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("templateId", templateId);
+        params.put("template_id", templateId);
         Map<String, Object> template = sqlSession.selectOne("barcodeLabel.getBarcodeLabelTemplateInfo", params);
         if (template == null) return null;
 
diff --git a/backend-spring/src/main/java/com/erp/service/BatchExecutionLogService.java b/backend-spring/src/main/java/com/erp/service/BatchExecutionLogService.java
index dfee8d66..ee20002a 100644
--- a/backend-spring/src/main/java/com/erp/service/BatchExecutionLogService.java
+++ b/backend-spring/src/main/java/com/erp/service/BatchExecutionLogService.java
@@ -19,43 +19,43 @@ public class BatchExecutionLogService extends BaseService {
     public Map<String, Object> getBatchExecutionLogList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        Integer totalObj = sqlSession.selectOne(NS + "getBatchExecutionLogListCnt", params);
+        Integer totalObj = sqlSession.selectOne(NS + "get_batch_execution_log_list_cnt", params);
         int totalCount = totalObj != null ? totalObj : 0;
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getBatchExecutionLogList", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_batch_execution_log_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getBatchExecutionLogInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getBatchExecutionLogInfo", params);
+        return sqlSession.selectOne(NS + "get_batch_execution_log_info", params);
     }
 
     @Transactional
     public Map<String, Object> insertBatchExecutionLog(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.insert(NS + "insertBatchExecutionLog", params);
+        sqlSession.insert(NS + "insert_batch_execution_log", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateBatchExecutionLog(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updateBatchExecutionLog", params);
+        sqlSession.update(NS + "update_batch_execution_log", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteBatchExecutionLog(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deleteBatchExecutionLog", params);
+        sqlSession.delete(NS + "delete_batch_execution_log", params);
         return params;
     }
 
     public Map<String, Object> getBatchExecutionLogLatest(Map<String, Object> params) {
-        return sqlSession.selectOne(NS + "getBatchExecutionLogLatest", params);
+        return sqlSession.selectOne(NS + "get_batch_execution_log_latest", params);
     }
 
     public Map<String, Object> getBatchExecutionLogStats(Map<String, Object> params) {
-        return sqlSession.selectOne(NS + "getBatchExecutionLogStats", params);
+        return sqlSession.selectOne(NS + "get_batch_execution_log_stats", params);
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/BatchManagementService.java b/backend-spring/src/main/java/com/erp/service/BatchManagementService.java
index cd2d4a4c..5c962ffd 100644
--- a/backend-spring/src/main/java/com/erp/service/BatchManagementService.java
+++ b/backend-spring/src/main/java/com/erp/service/BatchManagementService.java
@@ -31,7 +31,7 @@ public class BatchManagementService extends BaseService {
 
     public Map<String, Object> getBatchStats(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> stats = sqlSession.selectOne(NS + "getBatchManagementStats", params);
+        Map<String, Object> stats = sqlSession.selectOne(NS + "get_batch_management_stats", params);
         return stats != null ? stats : Collections.emptyMap();
     }
 
@@ -39,7 +39,7 @@ public class BatchManagementService extends BaseService {
 
     public List<Map<String, Object>> getNodeFlows(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getBatchManagementNodeFlowList", params);
+        return sqlSession.selectList(NS + "get_batch_management_node_flow_list", params);
     }
 
     // ── Connections / Tables / Columns ────────────────────────────────────────
@@ -120,25 +120,25 @@ public class BatchManagementService extends BaseService {
         long duration = System.currentTimeMillis() - startTime;
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("batchName",      batchName);
-        result.put("totalRecords",   0);
-        result.put("successRecords", 0);
-        result.put("failedRecords",  0);
-        result.put("executionTime",  duration);
+        result.put("batch_name",      batchName);
+        result.put("total_records",   0);
+        result.put("success_records", 0);
+        result.put("failed_records",  0);
+        result.put("execution_time",  duration);
         return result;
     }
 
     // ── REST API Preview / Save ───────────────────────────────────────────────
 
     public Map<String, Object> previewRestApiData(Map<String, Object> body) {
-        String apiUrl     = str(body.get("apiUrl"));
+        String apiUrl     = str(body.get("api_url"));
         String endpoint   = str(body.get("endpoint"));
         String method     = body.get("method") != null ? str(body.get("method")) : "GET";
-        String apiKey     = str(body.get("apiKey"));
-        String dataPath   = str(body.get("dataArrayPath"));
-        String paramType  = str(body.get("paramType"));
-        String paramName  = str(body.get("paramName"));
-        String paramValue = str(body.get("paramValue"));
+        String apiKey     = str(body.get("api_key"));
+        String dataPath   = str(body.get("data_array_path"));
+        String paramType  = str(body.get("param_type"));
+        String paramName  = str(body.get("param_name"));
+        String paramValue = str(body.get("param_value"));
 
         if (isBlank(apiUrl) || isBlank(endpoint)) {
             throw new IllegalArgumentException("API URL과 엔드포인트는 필수입니다.");
@@ -189,14 +189,14 @@ public class BatchManagementService extends BaseService {
 
     @Transactional
     public Map<String, Object> saveRestApiBatch(Map<String, Object> body) {
-        if (isBlank(str(body.get("batchName"))) || isBlank(str(body.get("cronSchedule")))) {
+        if (isBlank(str(body.get("batch_name"))) || isBlank(str(body.get("cron_schedule")))) {
             throw new IllegalArgumentException("필수 필드가 누락되었습니다. (batchName, cronSchedule)");
         }
         convertCamelToSnake(body);
         if (body.get("created_by") == null) body.put("created_by", "system");
         if (body.get("is_active")  == null) body.put("is_active",  "Y");
         if (body.get("execution_type") == null) {
-            body.put("execution_type", body.getOrDefault("batchType", "mapping"));
+            body.put("execution_type", body.getOrDefault("batch_type", "mapping"));
         }
         return batchService.insertBatch(body);
     }
@@ -205,35 +205,35 @@ public class BatchManagementService extends BaseService {
 
     public List<String> getAuthServiceNames(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getBatchManagementAuthServiceList", params);
+        return sqlSession.selectList(NS + "get_batch_management_auth_service_list", params);
     }
 
     // ── Sparkline / Recent Logs ───────────────────────────────────────────────
 
     public List<Map<String, Object>> getBatchSparkline(Map<String, Object> params) {
-        return sqlSession.selectList(NS + "getBatchManagementSparklineData", params);
+        return sqlSession.selectList(NS + "get_batch_management_sparkline_data", params);
     }
 
     public List<Map<String, Object>> getBatchRecentLogs(Map<String, Object> params) {
-        return sqlSession.selectList(NS + "getBatchManagementRecentLogList", params);
+        return sqlSession.selectList(NS + "get_batch_management_recent_log_list", params);
     }
 
     // ── Private Helpers ───────────────────────────────────────────────────────
 
     /** camelCase 요청 필드 → batch_configs 테이블 컬럼명(snake_case) 변환 */
     private void convertCamelToSnake(Map<String, Object> params) {
-        remap(params, "batchName",       "batch_name");
-        remap(params, "cronSchedule",    "cron_schedule");
-        remap(params, "isActive",        "is_active");
-        remap(params, "saveMode",        "save_mode");
-        remap(params, "conflictKey",     "conflict_key");
-        remap(params, "authServiceName", "auth_service_name");
-        remap(params, "dataArrayPath",   "data_array_path");
-        remap(params, "executionType",   "execution_type");
-        remap(params, "nodeFlowId",      "node_flow_id");
-        remap(params, "nodeFlowContext", "node_flow_context");
-        remap(params, "batchType",       "execution_type");
-        remap(params, "apiMappings",     "mappings");
+        remap(params, "batch_name",       "batch_name");
+        remap(params, "cron_schedule",    "cron_schedule");
+        remap(params, "is_active",        "is_active");
+        remap(params, "save_mode",        "save_mode");
+        remap(params, "conflict_key",     "conflict_key");
+        remap(params, "auth_service_name", "auth_service_name");
+        remap(params, "data_array_path",   "data_array_path");
+        remap(params, "execution_type",   "execution_type");
+        remap(params, "node_flow_id",      "node_flow_id");
+        remap(params, "node_flow_context", "node_flow_context");
+        remap(params, "batch_type",       "execution_type");
+        remap(params, "api_mappings",     "mappings");
         remap(params, "description",     "description");
     }
 
@@ -288,7 +288,7 @@ public class BatchManagementService extends BaseService {
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("fields",     fields);
         result.put("samples",    samples);
-        result.put("totalCount", dataList.size());
+        result.put("total_count", dataList.size());
         return result;
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/BatchService.java b/backend-spring/src/main/java/com/erp/service/BatchService.java
index 543ebca4..8cd64b12 100644
--- a/backend-spring/src/main/java/com/erp/service/BatchService.java
+++ b/backend-spring/src/main/java/com/erp/service/BatchService.java
@@ -21,25 +21,25 @@ public class BatchService extends BaseService {
     public Map<String, Object> getBatchList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        Integer totalObj = sqlSession.selectOne(NS + "getBatchListCnt", params);
+        Integer totalObj = sqlSession.selectOne(NS + "get_batch_list_cnt", params);
         int totalCount = totalObj != null ? totalObj : 0;
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getBatchList", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_batch_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getBatchInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getBatchInfo", params);
+        return sqlSession.selectOne(NS + "get_batch_info", params);
     }
 
     @Transactional
     public Map<String, Object> insertBatch(Map<String, Object> params) {
-        sqlSession.insert(NS + "insertBatch", params);
+        sqlSession.insert(NS + "insert_batch", params);
         Long id = params.get("id") != null ? Long.parseLong(params.get("id").toString()) : null;
         if (id != null) {
             Map<String, Object> infoParams = new HashMap<>();
             infoParams.put("id", id);
-            return sqlSession.selectOne(NS + "getBatchInfo", infoParams);
+            return sqlSession.selectOne(NS + "get_batch_info", infoParams);
         }
         return params;
     }
@@ -47,16 +47,16 @@ public class BatchService extends BaseService {
     @Transactional
     public Map<String, Object> updateBatch(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updateBatch", params);
+        sqlSession.update(NS + "update_batch", params);
         Map<String, Object> infoParams = new HashMap<>();
         infoParams.put("id", params.get("id"));
-        return sqlSession.selectOne(NS + "getBatchInfo", infoParams);
+        return sqlSession.selectOne(NS + "get_batch_info", infoParams);
     }
 
     @Transactional
     public int deleteBatch(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.delete(NS + "deleteBatch", params);
+        return sqlSession.delete(NS + "delete_batch", params);
     }
 
     public List<Map<String, Object>> getConnections(String companyCode) {
@@ -70,16 +70,16 @@ public class BatchService extends BaseService {
 
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("companyCode", companyCode);
+            params.put("company_code", companyCode);
             params.put("is_active", "Y");
             commonService.applyCompanyCodeFilter(params);
-            List<Map<String, Object>> externalConns = sqlSession.selectList(EXT_NS + "getExternalDbConnectionList", params);
+            List<Map<String, Object>> externalConns = sqlSession.selectList(EXT_NS + "get_external_db_connection_list", params);
             for (Map<String, Object> conn : externalConns) {
                 Map<String, Object> item = new LinkedHashMap<>();
                 item.put("id", conn.get("id"));
                 item.put("name", conn.get("connection_name"));
                 item.put("type", "external");
-                item.put("dbType", conn.get("db_type"));
+                item.put("db_type", conn.get("db_type"));
                 result.add(item);
             }
         } catch (Exception e) {
@@ -91,7 +91,7 @@ public class BatchService extends BaseService {
 
     public List<Map<String, Object>> getTables(String type, Long connectionId) {
         if ("internal".equals(type)) {
-            return sqlSession.selectList(NS + "getInternalTables");
+            return sqlSession.selectList(NS + "get_internal_tables");
         }
         return new ArrayList<>();
     }
@@ -99,8 +99,8 @@ public class BatchService extends BaseService {
     public List<Map<String, Object>> getColumns(String type, Long connectionId, String tableName) {
         if ("internal".equals(type)) {
             Map<String, Object> params = new HashMap<>();
-            params.put("tableName", tableName);
-            return sqlSession.selectList(NS + "getInternalTableColumns", params);
+            params.put("table_name", tableName);
+            return sqlSession.selectList(NS + "get_internal_table_columns", params);
         }
         return new ArrayList<>();
     }
diff --git a/backend-spring/src/main/java/com/erp/service/BomService.java b/backend-spring/src/main/java/com/erp/service/BomService.java
index a0edba02..3dace3a7 100644
--- a/backend-spring/src/main/java/com/erp/service/BomService.java
+++ b/backend-spring/src/main/java/com/erp/service/BomService.java
@@ -25,34 +25,34 @@ public class BomService extends BaseService {
     public Map<String, Object> getBomList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getBomListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getBomList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_bom_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_bom_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getBomInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getBomInfo", params);
+        return sqlSession.selectOne(NS + "get_bom_info", params);
     }
 
     @Transactional
     public Map<String, Object> insertBom(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.insert(NS + "insertBom", params);
+        sqlSession.insert(NS + "insert_bom", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateBom(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updateBom", params);
+        sqlSession.update(NS + "update_bom", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteBom(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deleteBom", params);
+        sqlSession.delete(NS + "delete_bom", params);
         return params;
     }
 
@@ -125,7 +125,7 @@ public class BomService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("versions", versions);
-        result.put("currentVersionId", currentVersionId);
+        result.put("current_version_id", currentVersionId);
         return result;
     }
 
@@ -213,7 +213,7 @@ public class BomService extends BaseService {
 
         Map<String, Object> result = new HashMap<>();
         result.put("restored", true);
-        result.put("versionName", versionName);
+        result.put("version_name", versionName);
         return result;
     }
 
@@ -236,7 +236,7 @@ public class BomService extends BaseService {
 
         Map<String, Object> result = new HashMap<>();
         result.put("activated", true);
-        result.put("versionName", versionName);
+        result.put("version_name", versionName);
         return result;
     }
 
@@ -253,7 +253,7 @@ public class BomService extends BaseService {
                 currentVersionId, bomId
             );
             Map<String, Object> result = new HashMap<>();
-            result.put("versionId", currentVersionId);
+            result.put("version_id", currentVersionId);
             result.put("created", false);
             return result;
         }
@@ -270,7 +270,7 @@ public class BomService extends BaseService {
                 "UPDATE bom SET current_version_id = ? WHERE id = ? AND current_version_id IS NULL", existId, bomId
             );
             Map<String, Object> result = new HashMap<>();
-            result.put("versionId", existId);
+            result.put("version_id", existId);
             result.put("created", false);
             return result;
         }
@@ -289,8 +289,8 @@ public class BomService extends BaseService {
         jdbcTemplate.update("UPDATE bom SET current_version_id = ? WHERE id = ?", versionId, bomId);
 
         Map<String, Object> result = new HashMap<>();
-        result.put("versionId", versionId);
-        result.put("versionName", versionName);
+        result.put("version_id", versionId);
+        result.put("version_name", versionName);
         result.put("created", true);
         return result;
     }
@@ -316,15 +316,15 @@ public class BomService extends BaseService {
     public Map<String, Object> createBomFromExcel(String companyCode, String userId, List<Map<String, Object>> rows) {
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("success", false);
-        result.put("insertedCount", 0);
-        result.put("skippedCount", 0);
+        result.put("inserted_count", 0);
+        result.put("skipped_count", 0);
         result.put("errors", new ArrayList<String>());
-        result.put("unmatchedItems", new ArrayList<String>());
+        result.put("unmatched_items", new ArrayList<String>());
 
         @SuppressWarnings("unchecked")
         List<String> errors = (List<String>) result.get("errors");
         @SuppressWarnings("unchecked")
-        List<String> unmatchedItems = (List<String>) result.get("unmatchedItems");
+        List<String> unmatchedItems = (List<String>) result.get("unmatched_items");
 
         if (rows == null || rows.isEmpty()) {
             errors.add("업로드할 데이터가 없습니다");
@@ -445,8 +445,8 @@ public class BomService extends BaseService {
         );
 
         result.put("success", true);
-        result.put("insertedCount", insertedCount);
-        result.put("createdBomId", newBomId);
+        result.put("inserted_count", insertedCount);
+        result.put("created_bom_id", newBomId);
         return result;
     }
 
@@ -454,20 +454,20 @@ public class BomService extends BaseService {
     public Map<String, Object> createBomVersionFromExcel(String bomId, String companyCode, String userId, List<Map<String, Object>> rows, String versionName) {
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("success", false);
-        result.put("insertedCount", 0);
-        result.put("skippedCount", 0);
+        result.put("inserted_count", 0);
+        result.put("skipped_count", 0);
         result.put("errors", new ArrayList<String>());
-        result.put("unmatchedItems", new ArrayList<String>());
+        result.put("unmatched_items", new ArrayList<String>());
 
         @SuppressWarnings("unchecked")
         List<String> errors = (List<String>) result.get("errors");
         @SuppressWarnings("unchecked")
-        List<String> unmatchedItems = (List<String>) result.get("unmatchedItems");
+        List<String> unmatchedItems = (List<String>) result.get("unmatched_items");
 
         if (rows == null || rows.isEmpty()) { errors.add("업로드할 데이터가 없습니다"); return result; }
 
         List<Map<String, Object>> detailRows = rows.stream().filter(r -> toInt(r.get("level")) > 0).collect(Collectors.toList());
-        result.put("skippedCount", rows.size() - detailRows.size());
+        result.put("skipped_count", rows.size() - detailRows.size());
         if (detailRows.isEmpty()) { errors.add("하위품목이 없습니다"); return result; }
 
         List<Map<String, Object>> bomCheck = jdbcTemplate.queryForList(
@@ -554,8 +554,8 @@ public class BomService extends BaseService {
         );
 
         result.put("success", true);
-        result.put("insertedCount", insertedCount);
-        result.put("createdBomId", bomId);
+        result.put("inserted_count", insertedCount);
+        result.put("created_bom_id", bomId);
         return result;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/BookingService.java b/backend-spring/src/main/java/com/erp/service/BookingService.java
index bbd8be0b..c012910d 100644
--- a/backend-spring/src/main/java/com/erp/service/BookingService.java
+++ b/backend-spring/src/main/java/com/erp/service/BookingService.java
@@ -31,8 +31,8 @@ public class BookingService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("bookings", list);
-        result.put("newCount", newCount);
-        result.put("totalCount", totalCount);
+        result.put("new_count", newCount);
+        result.put("total_count", totalCount);
         return result;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/ButtonActionStandardService.java b/backend-spring/src/main/java/com/erp/service/ButtonActionStandardService.java
index 81b00a5f..d0afffd6 100644
--- a/backend-spring/src/main/java/com/erp/service/ButtonActionStandardService.java
+++ b/backend-spring/src/main/java/com/erp/service/ButtonActionStandardService.java
@@ -23,7 +23,7 @@ public class ButtonActionStandardService extends BaseService {
      * 버튼 액션 목록 조회 (동적 필터)
      */
     public List<Map<String, Object>> getButtonActions(Map<String, Object> params) {
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "selectButtonActions", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "select_button_actions", params);
         rows.forEach(this::parseJsonFields);
         return rows;
     }
@@ -32,7 +32,7 @@ public class ButtonActionStandardService extends BaseService {
      * 버튼 액션 단건 조회
      */
     public Map<String, Object> getButtonAction(Map<String, Object> params) {
-        Map<String, Object> row = sqlSession.selectOne(NS + "selectButtonActionByType", params);
+        Map<String, Object> row = sqlSession.selectOne(NS + "select_button_action_by_type", params);
         if (row != null) parseJsonFields(row);
         return row;
     }
@@ -43,7 +43,7 @@ public class ButtonActionStandardService extends BaseService {
     @Transactional
     public Map<String, Object> createButtonAction(Map<String, Object> params) {
         // 중복 체크
-        Map<String, Object> existing = sqlSession.selectOne(NS + "selectButtonActionByType", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "select_button_action_by_type", params);
         if (existing != null) {
             throw new IllegalArgumentException("이미 존재하는 액션 타입입니다: " + params.get("action_type"));
         }
@@ -59,11 +59,11 @@ public class ButtonActionStandardService extends BaseService {
         params.putIfAbsent("sort_order", 0);
         params.putIfAbsent("is_active", "Y");
 
-        sqlSession.insert(NS + "insertButtonAction", params);
+        sqlSession.insert(NS + "insert_button_action", params);
 
         // 삽입된 행 조회 후 반환 (actionType 키로 조회)
-        params.put("actionType", params.get("action_type"));
-        Map<String, Object> created = sqlSession.selectOne(NS + "selectButtonActionByType", params);
+        params.put("action_type", params.get("action_type"));
+        Map<String, Object> created = sqlSession.selectOne(NS + "select_button_action_by_type", params);
         if (created != null) parseJsonFields(created);
         return created;
     }
@@ -74,7 +74,7 @@ public class ButtonActionStandardService extends BaseService {
     @Transactional
     public Map<String, Object> updateButtonAction(Map<String, Object> params) {
         // 존재 여부 확인
-        Map<String, Object> existing = sqlSession.selectOne(NS + "selectButtonActionByType", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "select_button_action_by_type", params);
         if (existing == null) {
             return null;
         }
@@ -83,9 +83,9 @@ public class ButtonActionStandardService extends BaseService {
         serializeJsonField(params, "validation_rules");
         serializeJsonField(params, "action_config");
 
-        sqlSession.update(NS + "updateButtonAction", params);
+        sqlSession.update(NS + "update_button_action", params);
 
-        Map<String, Object> updated = sqlSession.selectOne(NS + "selectButtonActionByType", params);
+        Map<String, Object> updated = sqlSession.selectOne(NS + "select_button_action_by_type", params);
         if (updated != null) parseJsonFields(updated);
         return updated;
     }
@@ -95,11 +95,11 @@ public class ButtonActionStandardService extends BaseService {
      */
     @Transactional
     public boolean deleteButtonAction(Map<String, Object> params) {
-        Map<String, Object> existing = sqlSession.selectOne(NS + "selectButtonActionByType", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "select_button_action_by_type", params);
         if (existing == null) {
             return false;
         }
-        sqlSession.delete(NS + "deleteButtonAction", params);
+        sqlSession.delete(NS + "delete_button_action", params);
         return true;
     }
 
@@ -110,7 +110,7 @@ public class ButtonActionStandardService extends BaseService {
     public void updateSortOrder(List<Map<String, Object>> items, String userId) {
         for (Map<String, Object> item : items) {
             item.put("updated_by", userId);
-            sqlSession.update(NS + "updateSortOrderItem", item);
+            sqlSession.update(NS + "update_sort_order_item", item);
         }
     }
 
@@ -118,7 +118,7 @@ public class ButtonActionStandardService extends BaseService {
      * 카테고리 목록 조회 (카운트 포함)
      */
     public List<Map<String, Object>> getCategories(Map<String, Object> params) {
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "selectCategories", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "select_categories", params);
         // count 필드를 Integer로 변환
         rows.forEach(row -> {
             Object cnt = row.get("count");
diff --git a/backend-spring/src/main/java/com/erp/service/ButtonDataflowService.java b/backend-spring/src/main/java/com/erp/service/ButtonDataflowService.java
index 49617f43..1a375ebe 100644
--- a/backend-spring/src/main/java/com/erp/service/ButtonDataflowService.java
+++ b/backend-spring/src/main/java/com/erp/service/ButtonDataflowService.java
@@ -32,14 +32,14 @@ public class ButtonDataflowService extends BaseService {
     public Map<String, Object> getButtonDataflowConfig(String buttonId) {
         // Node 코드와 동일한 mock 구조
         Map<String, Object> config = new LinkedHashMap<>();
-        config.put("controlMode", "simple");
-        config.put("selectedDiagramId", 1);
-        config.put("selectedRelationshipId", "rel-123");
+        config.put("control_mode", "simple");
+        config.put("selected_diagram_id", 1);
+        config.put("selected_relationship_id", "rel-123");
         Map<String, Object> opts = new LinkedHashMap<>();
-        opts.put("rollbackOnError", true);
-        opts.put("enableLogging", true);
-        opts.put("asyncExecution", true);
-        config.put("executionOptions", opts);
+        opts.put("rollback_on_error", true);
+        opts.put("enable_logging", true);
+        opts.put("async_execution", true);
+        config.put("execution_options", opts);
         return config;
     }
 
@@ -54,7 +54,7 @@ public class ButtonDataflowService extends BaseService {
 
     public List<Map<String, Object>> getAvailableDiagrams(String companyCode) {
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("page",  1);
         params.put("size",  100);
 
@@ -121,8 +121,8 @@ public class ButtonDataflowService extends BaseService {
         preview.put("relationship",      relationship);
         preview.put("control",           control);
         preview.put("plan",              plan);
-        preview.put("conditionsCount",   conditionsCount);
-        preview.put("actionsCount",      actionsCount);
+        preview.put("conditions_count",   conditionsCount);
+        preview.put("actions_count",      actionsCount);
         return preview;
     }
 
@@ -135,8 +135,8 @@ public class ButtonDataflowService extends BaseService {
      * timing: after | before | replace
      */
     public Map<String, Object> executeOptimizedButton(Map<String, Object> params) {
-        String buttonId   = (String) params.get("buttonId");
-        String actionType = (String) params.get("actionType");
+        String buttonId   = (String) params.get("button_id");
+        String actionType = (String) params.get("action_type");
         String timing     = params.get("timing") != null ? (String) params.get("timing") : "after";
 
         long startTime = System.currentTimeMillis();
@@ -148,18 +148,18 @@ public class ButtonDataflowService extends BaseService {
         Map<String, Object> immediateResult = new LinkedHashMap<>();
         immediateResult.put("success",   true);
         immediateResult.put("message",   actionType + " 액션이 완료되었습니다.");
-        immediateResult.put("actionType", actionType);
+        immediateResult.put("action_type", actionType);
         immediateResult.put("timestamp", new java.util.Date().toString());
 
         long responseTime = System.currentTimeMillis() - startTime;
         log.info("버튼 실행 ({}): {}ms, jobId={}", timing, responseTime, jobId);
 
         Map<String, Object> data = new LinkedHashMap<>();
-        data.put("jobId",           jobId);
-        data.put("immediateResult", immediateResult);
-        data.put("isBackground",    true);
+        data.put("job_id",           jobId);
+        data.put("immediate_result", immediateResult);
+        data.put("is_background",    true);
         data.put("timing",          timing);
-        data.put("responseTime",    responseTime);
+        data.put("response_time",    responseTime);
         return data;
     }
 
@@ -167,13 +167,13 @@ public class ButtonDataflowService extends BaseService {
      * 단순 데이터플로우 즉시 실행 (Node 코드 executeSimpleDataflow 동일 구조)
      */
     public Map<String, Object> executeSimpleDataflow(Map<String, Object> params) {
-        String companyCode = (String) params.getOrDefault("companyCode", "*");
+        String companyCode = (String) params.getOrDefault("company_code", "*");
         log.info("단순 데이터플로우 실행: companyCode={}", companyCode);
 
         // Node 코드와 동일한 응답 구조
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("success",         true);
-        result.put("executedActions", 0);
+        result.put("executed_actions", 0);
         result.put("message",         "0개의 액션이 실행되었습니다.");
         result.put("results",         Collections.emptyList());
         return result;
@@ -187,7 +187,7 @@ public class ButtonDataflowService extends BaseService {
         // Node 코드와 동일한 mock 응답
         Map<String, Object> innerResult = new LinkedHashMap<>();
         innerResult.put("success",          true);
-        innerResult.put("executedActions",  2);
+        innerResult.put("executed_actions",  2);
         innerResult.put("message",          "백그라운드 처리가 완료되었습니다.");
 
         Map<String, Object> status = new LinkedHashMap<>();
@@ -205,9 +205,9 @@ public class ButtonDataflowService extends BaseService {
         log.info("조인 관계 조회: {}.* → {}.*  (company={})", mainTable, detailTable, companyCode);
 
         Map<String, Object> qParams = new HashMap<>();
-        qParams.put("mainTable",   mainTable);
-        qParams.put("detailTable", detailTable);
-        qParams.put("companyCode", companyCode != null ? companyCode : "*");
+        qParams.put("main_table",   mainTable);
+        qParams.put("detail_table", detailTable);
+        qParams.put("company_code", companyCode != null ? companyCode : "*");
 
         Map<String, Object> row = sqlSession.selectOne("buttonDataflow.getButtonDataflowJoinRelationship", qParams);
 
@@ -238,9 +238,9 @@ public class ButtonDataflowService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("found",            true);
-        result.put("mainColumn",       mainColumn);
-        result.put("detailColumn",     detailColumn);
-        result.put("relationshipType", row.get("relationship_type"));
+        result.put("main_column",       mainColumn);
+        result.put("detail_column",     detailColumn);
+        result.put("relationship_type", row.get("relationship_type"));
         return result;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/CascadingAutoFillService.java b/backend-spring/src/main/java/com/erp/service/CascadingAutoFillService.java
index c801bc72..021cd4f8 100644
--- a/backend-spring/src/main/java/com/erp/service/CascadingAutoFillService.java
+++ b/backend-spring/src/main/java/com/erp/service/CascadingAutoFillService.java
@@ -23,20 +23,20 @@ public class CascadingAutoFillService extends BaseService {
     public Map<String, Object> getCascadingAutoFillGroupList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getCascadingAutoFillGroupListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getCascadingAutoFillGroupList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_cascading_auto_fill_group_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_cascading_auto_fill_group_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getCascadingAutoFillGroupDetail(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> group = sqlSession.selectOne(NS + "getCascadingAutoFillGroupByCode", params);
+        Map<String, Object> group = sqlSession.selectOne(NS + "get_cascading_auto_fill_group_by_code", params);
         if (group == null) return null;
 
         Map<String, Object> mappingParams = new HashMap<>();
-        mappingParams.put("groupCode", params.get("groupCode"));
-        mappingParams.put("companyCode", group.get("company_code"));
-        List<Map<String, Object>> mappings = sqlSession.selectList(NS + "getCascadingAutoFillMappingList", mappingParams);
+        mappingParams.put("group_code", params.get("group_code"));
+        mappingParams.put("company_code", group.get("company_code"));
+        List<Map<String, Object>> mappings = sqlSession.selectList(NS + "get_cascading_auto_fill_mapping_list", mappingParams);
 
         Map<String, Object> result = new HashMap<>(group);
         result.put("mappings", mappings);
@@ -46,23 +46,23 @@ public class CascadingAutoFillService extends BaseService {
     @Transactional
     public Map<String, Object> insertCascadingAutoFillGroup(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
 
         // Generate group code: AF_{timestamp_base36}_{count:03d}
         Map<String, Object> countParams = new HashMap<>();
-        countParams.put("companyCode", companyCode);
-        Number cntNum = sqlSession.selectOne(NS + "getCascadingAutoFillGroupCount", countParams);
+        countParams.put("company_code", companyCode);
+        Number cntNum = sqlSession.selectOne(NS + "get_cascading_auto_fill_group_count", countParams);
         int count = (cntNum != null ? cntNum.intValue() : 0) + 1;
         String timestamp = Long.toString(System.currentTimeMillis(), 36).toUpperCase();
         String suffix = timestamp.substring(Math.max(0, timestamp.length() - 4));
         String groupCode = "AF_" + suffix + "_" + String.format("%03d", count);
-        params.put("groupCode", groupCode);
+        params.put("group_code", groupCode);
 
-        if (params.get("isActive") == null) {
-            params.put("isActive", "Y");
+        if (params.get("is_active") == null) {
+            params.put("is_active", "Y");
         }
 
-        sqlSession.insert(NS + "insertCascadingAutoFillGroup", params);
+        sqlSession.insert(NS + "insert_cascading_auto_fill_group", params);
 
         // Insert mappings
         Object mappingsObj = params.get("mappings");
@@ -74,12 +74,12 @@ public class CascadingAutoFillService extends BaseService {
                     @SuppressWarnings("unchecked")
                     Map<String, Object> mapping = (Map<String, Object>) m;
                     Map<String, Object> mp = new HashMap<>(mapping);
-                    mp.put("groupCode", groupCode);
-                    mp.put("companyCode", companyCode);
-                    if (mp.get("isEditable") == null) mp.put("isEditable", "Y");
-                    if (mp.get("isRequired") == null) mp.put("isRequired", "N");
-                    if (mp.get("sortOrder") == null) mp.put("sortOrder", i + 1);
-                    sqlSession.insert(NS + "insertCascadingAutoFillMapping", mp);
+                    mp.put("group_code", groupCode);
+                    mp.put("company_code", companyCode);
+                    if (mp.get("is_editable") == null) mp.put("is_editable", "Y");
+                    if (mp.get("is_required") == null) mp.put("is_required", "N");
+                    if (mp.get("sort_order") == null) mp.put("sort_order", i + 1);
+                    sqlSession.insert(NS + "insert_cascading_auto_fill_mapping", mp);
                 }
             }
         }
@@ -89,22 +89,22 @@ public class CascadingAutoFillService extends BaseService {
     @Transactional
     public Map<String, Object> updateCascadingAutoFillGroup(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String groupCode = (String) params.get("groupCode");
+        String groupCode = (String) params.get("group_code");
 
-        Map<String, Object> existing = sqlSession.selectOne(NS + "getCascadingAutoFillGroupByCode", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "get_cascading_auto_fill_group_by_code", params);
         if (existing == null) return null;
 
         String actualCompanyCode = (String) existing.get("company_code");
-        params.put("companyCode", actualCompanyCode);
+        params.put("company_code", actualCompanyCode);
 
-        sqlSession.update(NS + "updateCascadingAutoFillGroup", params);
+        sqlSession.update(NS + "update_cascading_auto_fill_group", params);
 
         // Replace mappings if provided
         if (params.containsKey("mappings")) {
             Map<String, Object> delParams = new HashMap<>();
-            delParams.put("groupCode", groupCode);
-            delParams.put("companyCode", actualCompanyCode);
-            sqlSession.delete(NS + "deleteCascadingAutoFillMappings", delParams);
+            delParams.put("group_code", groupCode);
+            delParams.put("company_code", actualCompanyCode);
+            sqlSession.delete(NS + "delete_cascading_auto_fill_mappings", delParams);
 
             Object mappingsObj = params.get("mappings");
             if (mappingsObj instanceof List) {
@@ -115,12 +115,12 @@ public class CascadingAutoFillService extends BaseService {
                         @SuppressWarnings("unchecked")
                         Map<String, Object> mapping = (Map<String, Object>) m;
                         Map<String, Object> mp = new HashMap<>(mapping);
-                        mp.put("groupCode", groupCode);
-                        mp.put("companyCode", actualCompanyCode);
-                        if (mp.get("isEditable") == null) mp.put("isEditable", "Y");
-                        if (mp.get("isRequired") == null) mp.put("isRequired", "N");
-                        if (mp.get("sortOrder") == null) mp.put("sortOrder", i + 1);
-                        sqlSession.insert(NS + "insertCascadingAutoFillMapping", mp);
+                        mp.put("group_code", groupCode);
+                        mp.put("company_code", actualCompanyCode);
+                        if (mp.get("is_editable") == null) mp.put("is_editable", "Y");
+                        if (mp.get("is_required") == null) mp.put("is_required", "N");
+                        if (mp.get("sort_order") == null) mp.put("sort_order", i + 1);
+                        sqlSession.insert(NS + "insert_cascading_auto_fill_mapping", mp);
                     }
                 }
             }
@@ -131,27 +131,27 @@ public class CascadingAutoFillService extends BaseService {
     @Transactional
     public boolean deleteCascadingAutoFillGroup(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> existing = sqlSession.selectOne(NS + "getCascadingAutoFillGroupByCode", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "get_cascading_auto_fill_group_by_code", params);
         if (existing == null) return false;
 
-        String groupCode = (String) params.get("groupCode");
+        String groupCode = (String) params.get("group_code");
         String companyCode = (String) existing.get("company_code");
 
         Map<String, Object> delParams = new HashMap<>();
-        delParams.put("groupCode", groupCode);
-        delParams.put("companyCode", companyCode);
-        sqlSession.delete(NS + "deleteCascadingAutoFillMappings", delParams);
-        sqlSession.delete(NS + "deleteCascadingAutoFillGroup", delParams);
+        delParams.put("group_code", groupCode);
+        delParams.put("company_code", companyCode);
+        sqlSession.delete(NS + "delete_cascading_auto_fill_mappings", delParams);
+        sqlSession.delete(NS + "delete_cascading_auto_fill_group", delParams);
         return true;
     }
 
     public List<Map<String, Object>> getAutoFillMasterOptions(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
 
         Map<String, Object> groupParams = new HashMap<>(params);
-        groupParams.put("isActive", "Y");
-        Map<String, Object> group = sqlSession.selectOne(NS + "getCascadingAutoFillGroupByCode", groupParams);
+        groupParams.put("is_active", "Y");
+        Map<String, Object> group = sqlSession.selectOne(NS + "get_cascading_auto_fill_group_by_code", groupParams);
         if (group == null) return null;
 
         String masterTable = sanitizeIdentifier((String) group.get("master_table"));
@@ -179,20 +179,20 @@ public class CascadingAutoFillService extends BaseService {
 
     public Map<String, Object> getAutoFillData(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String groupCode = (String) params.get("groupCode");
-        String masterValue = (String) params.get("masterValue");
-        String companyCode = (String) params.get("companyCode");
+        String groupCode = (String) params.get("group_code");
+        String masterValue = (String) params.get("master_value");
+        String companyCode = (String) params.get("company_code");
 
         Map<String, Object> groupParams = new HashMap<>(params);
-        groupParams.put("isActive", "Y");
-        Map<String, Object> group = sqlSession.selectOne(NS + "getCascadingAutoFillGroupByCode", groupParams);
+        groupParams.put("is_active", "Y");
+        Map<String, Object> group = sqlSession.selectOne(NS + "get_cascading_auto_fill_group_by_code", groupParams);
         if (group == null) return null;
 
         String actualCompanyCode = (String) group.get("company_code");
         Map<String, Object> mappingParams = new HashMap<>();
-        mappingParams.put("groupCode", groupCode);
-        mappingParams.put("companyCode", actualCompanyCode);
-        List<Map<String, Object>> mappings = sqlSession.selectList(NS + "getCascadingAutoFillMappingList", mappingParams);
+        mappingParams.put("group_code", groupCode);
+        mappingParams.put("company_code", actualCompanyCode);
+        List<Map<String, Object>> mappings = sqlSession.selectList(NS + "get_cascading_auto_fill_mapping_list", mappingParams);
 
         if (mappings.isEmpty()) {
             Map<String, Object> empty = new HashMap<>();
@@ -236,11 +236,11 @@ public class CascadingAutoFillService extends BaseService {
             autoFillData.put(targetField, finalValue);
 
             Map<String, Object> info = new LinkedHashMap<>();
-            info.put("targetField", targetField);
-            info.put("targetLabel", mapping.get("target_label"));
+            info.put("target_field", targetField);
+            info.put("target_label", mapping.get("target_label"));
             info.put("value", finalValue);
-            info.put("isEditable", "Y".equals(mapping.get("is_editable")));
-            info.put("isRequired", "Y".equals(mapping.get("is_required")));
+            info.put("is_editable", "Y".equals(mapping.get("is_editable")));
+            info.put("is_required", "Y".equals(mapping.get("is_required")));
             mappingInfo.add(info);
         }
 
diff --git a/backend-spring/src/main/java/com/erp/service/CascadingConditionService.java b/backend-spring/src/main/java/com/erp/service/CascadingConditionService.java
index 4249131b..d1190b90 100644
--- a/backend-spring/src/main/java/com/erp/service/CascadingConditionService.java
+++ b/backend-spring/src/main/java/com/erp/service/CascadingConditionService.java
@@ -24,56 +24,56 @@ public class CascadingConditionService extends BaseService {
     public Map<String, Object> getCascadingConditionList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getCascadingConditionListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getCascadingConditionList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_cascading_condition_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_cascading_condition_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getCascadingConditionInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getCascadingConditionInfo", params);
+        return sqlSession.selectOne(NS + "get_cascading_condition_info", params);
     }
 
     @Transactional
     public Map<String, Object> insertCascadingCondition(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.insert(NS + "insertCascadingCondition", params);
+        sqlSession.insert(NS + "insert_cascading_condition", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateCascadingCondition(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updateCascadingCondition", params);
+        sqlSession.update(NS + "update_cascading_condition", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteCascadingCondition(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deleteCascadingCondition", params);
+        sqlSession.delete(NS + "delete_cascading_condition", params);
         return params;
     }
 
     public Map<String, Object> getFilteredOptions(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String companyCode = (String) params.get("companyCode");
-        String conditionFieldValue = params.get("conditionFieldValue") != null
-                ? String.valueOf(params.get("conditionFieldValue")) : null;
-        String parentValue = params.get("parentValue") != null
-                ? String.valueOf(params.get("parentValue")) : null;
+        String companyCode = (String) params.get("company_code");
+        String conditionFieldValue = params.get("condition_field_value") != null
+                ? String.valueOf(params.get("condition_field_value")) : null;
+        String parentValue = params.get("parent_value") != null
+                ? String.valueOf(params.get("parent_value")) : null;
 
         // 1. 연쇄 관계 조회
-        Map<String, Object> relation = sqlSession.selectOne(NS_RELATION + "getCascadingRelationByCode", params);
+        Map<String, Object> relation = sqlSession.selectOne(NS_RELATION + "get_cascading_relation_by_code", params);
         if (relation == null) {
             Map<String, Object> empty = new LinkedHashMap<>();
             empty.put("data", Collections.emptyList());
-            empty.put("appliedCondition", null);
+            empty.put("applied_condition", null);
             return empty;
         }
 
         // 2. 조건 규칙 조회 (우선순위 내림차순)
-        List<Map<String, Object>> conditions = sqlSession.selectList(NS + "getCascadingConditionsByRelationCode", params);
+        List<Map<String, Object>> conditions = sqlSession.selectList(NS + "get_cascading_conditions_by_relation_code", params);
 
         // 3. 매칭 조건 탐색
         Map<String, Object> matchedCondition = null;
@@ -149,11 +149,11 @@ public class CascadingConditionService extends BaseService {
         result.put("data", options);
         if (matchedCondition != null) {
             Map<String, Object> applied = new HashMap<>();
-            applied.put("conditionId", matchedCondition.get("condition_id"));
-            applied.put("conditionName", matchedCondition.get("condition_name"));
-            result.put("appliedCondition", applied);
+            applied.put("condition_id", matchedCondition.get("condition_id"));
+            applied.put("condition_name", matchedCondition.get("condition_name"));
+            result.put("applied_condition", applied);
         } else {
-            result.put("appliedCondition", null);
+            result.put("applied_condition", null);
         }
         return result;
     }
diff --git a/backend-spring/src/main/java/com/erp/service/CascadingHierarchyService.java b/backend-spring/src/main/java/com/erp/service/CascadingHierarchyService.java
index ce42016a..b7992e2d 100644
--- a/backend-spring/src/main/java/com/erp/service/CascadingHierarchyService.java
+++ b/backend-spring/src/main/java/com/erp/service/CascadingHierarchyService.java
@@ -21,20 +21,20 @@ public class CascadingHierarchyService extends BaseService {
     public Map<String, Object> getCascadingHierarchyGroupList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getCascadingHierarchyGroupListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getCascadingHierarchyGroupList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_cascading_hierarchy_group_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_cascading_hierarchy_group_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getCascadingHierarchyGroupDetail(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> group = sqlSession.selectOne(NS + "getCascadingHierarchyGroupByCode", params);
+        Map<String, Object> group = sqlSession.selectOne(NS + "get_cascading_hierarchy_group_by_code", params);
         if (group == null) return null;
 
         Map<String, Object> levelParams = new HashMap<>();
-        levelParams.put("groupCode", params.get("groupCode"));
-        levelParams.put("companyCode", group.get("company_code"));
-        List<Map<String, Object>> levels = sqlSession.selectList(NS + "getCascadingHierarchyLevelList", levelParams);
+        levelParams.put("group_code", params.get("group_code"));
+        levelParams.put("company_code", group.get("company_code"));
+        List<Map<String, Object>> levels = sqlSession.selectList(NS + "get_cascading_hierarchy_level_list", levelParams);
 
         Map<String, Object> result = new HashMap<>(group);
         result.put("levels", levels);
@@ -44,47 +44,47 @@ public class CascadingHierarchyService extends BaseService {
     @Transactional
     public Map<String, Object> insertCascadingHierarchyGroup(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String companyCode = (String) params.get("companyCode");
-        String userId = (String) params.getOrDefault("userId", "system");
+        String companyCode = (String) params.get("company_code");
+        String userId = (String) params.getOrDefault("user_id", "system");
 
         // Generate group code: HG_{timestamp_base36}_{count:03d}
         Map<String, Object> countParams = new HashMap<>();
-        countParams.put("companyCode", companyCode);
-        Number cntNum = sqlSession.selectOne(NS + "getCascadingHierarchyGroupCount", countParams);
+        countParams.put("company_code", companyCode);
+        Number cntNum = sqlSession.selectOne(NS + "get_cascading_hierarchy_group_count", countParams);
         int count = (cntNum != null ? cntNum.intValue() : 0) + 1;
         String timestamp = Long.toString(System.currentTimeMillis(), 36).toUpperCase();
         String suffix = timestamp.substring(Math.max(0, timestamp.length() - 4));
         String groupCode = "HG_" + suffix + "_" + String.format("%03d", count);
 
-        params.put("groupCode", groupCode);
-        params.put("createdBy", userId);
+        params.put("group_code", groupCode);
+        params.put("created_by", userId);
 
-        if (params.get("hierarchyType") == null) params.put("hierarchyType", "MULTI_TABLE");
-        if (params.get("isFixedLevels") == null) params.put("isFixedLevels", "Y");
-        if (params.get("emptyMessage") == null) params.put("emptyMessage", "선택해주세요");
-        if (params.get("noOptionsMessage") == null) params.put("noOptionsMessage", "옵션이 없습니다");
-        if (params.get("loadingMessage") == null) params.put("loadingMessage", "로딩 중...");
+        if (params.get("hierarchy_type") == null) params.put("hierarchy_type", "MULTI_TABLE");
+        if (params.get("is_fixed_levels") == null) params.put("is_fixed_levels", "Y");
+        if (params.get("empty_message") == null) params.put("empty_message", "선택해주세요");
+        if (params.get("no_options_message") == null) params.put("no_options_message", "옵션이 없습니다");
+        if (params.get("loading_message") == null) params.put("loading_message", "로딩 중...");
 
-        sqlSession.insert(NS + "insertCascadingHierarchyGroup", params);
+        sqlSession.insert(NS + "insert_cascading_hierarchy_group", params);
 
         // Insert levels for MULTI_TABLE type
         Object levelsObj = params.get("levels");
-        if ("MULTI_TABLE".equals(params.get("hierarchyType")) && levelsObj instanceof List) {
+        if ("MULTI_TABLE".equals(params.get("hierarchy_type")) && levelsObj instanceof List) {
             List<?> levels = (List<?>) levelsObj;
             for (Object l : levels) {
                 if (l instanceof Map) {
                     @SuppressWarnings("unchecked")
                     Map<String, Object> level = (Map<String, Object>) l;
                     Map<String, Object> lp = new HashMap<>(level);
-                    lp.put("groupCode", groupCode);
-                    lp.put("companyCode", companyCode);
-                    if (lp.get("orderDirection") == null) lp.put("orderDirection", "ASC");
-                    if (lp.get("isRequired") == null) lp.put("isRequired", "Y");
-                    if (lp.get("isSearchable") == null) lp.put("isSearchable", "N");
-                    if (lp.get("placeholder") == null && lp.get("levelName") != null) {
-                        lp.put("placeholder", lp.get("levelName") + " 선택");
+                    lp.put("group_code", groupCode);
+                    lp.put("company_code", companyCode);
+                    if (lp.get("order_direction") == null) lp.put("order_direction", "ASC");
+                    if (lp.get("is_required") == null) lp.put("is_required", "Y");
+                    if (lp.get("is_searchable") == null) lp.put("is_searchable", "N");
+                    if (lp.get("placeholder") == null && lp.get("level_name") != null) {
+                        lp.put("placeholder", lp.get("level_name") + " 선택");
                     }
-                    sqlSession.insert(NS + "insertCascadingHierarchyLevel", lp);
+                    sqlSession.insert(NS + "insert_cascading_hierarchy_level", lp);
                 }
             }
         }
@@ -94,81 +94,81 @@ public class CascadingHierarchyService extends BaseService {
     @Transactional
     public Map<String, Object> updateCascadingHierarchyGroup(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        params.put("updatedBy", params.getOrDefault("userId", "system"));
+        params.put("updated_by", params.getOrDefault("user_id", "system"));
 
-        Map<String, Object> existing = sqlSession.selectOne(NS + "getCascadingHierarchyGroupByCode", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "get_cascading_hierarchy_group_by_code", params);
         if (existing == null) return null;
 
-        params.put("companyCode", existing.get("company_code"));
-        sqlSession.update(NS + "updateCascadingHierarchyGroup", params);
+        params.put("company_code", existing.get("company_code"));
+        sqlSession.update(NS + "update_cascading_hierarchy_group", params);
         return params;
     }
 
     @Transactional
     public boolean deleteCascadingHierarchyGroup(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> existing = sqlSession.selectOne(NS + "getCascadingHierarchyGroupByCode", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "get_cascading_hierarchy_group_by_code", params);
         if (existing == null) return false;
 
-        String groupCode = (String) params.get("groupCode");
+        String groupCode = (String) params.get("group_code");
         String companyCode = (String) existing.get("company_code");
 
         Map<String, Object> delParams = new HashMap<>();
-        delParams.put("groupCode", groupCode);
-        delParams.put("companyCode", companyCode);
-        sqlSession.delete(NS + "deleteCascadingHierarchyLevels", delParams);
-        sqlSession.delete(NS + "deleteCascadingHierarchyGroup", delParams);
+        delParams.put("group_code", groupCode);
+        delParams.put("company_code", companyCode);
+        sqlSession.delete(NS + "delete_cascading_hierarchy_levels", delParams);
+        sqlSession.delete(NS + "delete_cascading_hierarchy_group", delParams);
         return true;
     }
 
     @Transactional
     public Map<String, Object> addCascadingHierarchyLevel(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String groupCode = (String) params.get("groupCode");
+        String groupCode = (String) params.get("group_code");
 
         Map<String, Object> groupParams = new HashMap<>();
-        groupParams.put("groupCode", groupCode);
-        groupParams.put("companyCode", params.get("companyCode"));
-        Map<String, Object> group = sqlSession.selectOne(NS + "getCascadingHierarchyGroupByCode", groupParams);
+        groupParams.put("group_code", groupCode);
+        groupParams.put("company_code", params.get("company_code"));
+        Map<String, Object> group = sqlSession.selectOne(NS + "get_cascading_hierarchy_group_by_code", groupParams);
         if (group == null) return null;
 
-        params.put("companyCode", group.get("company_code"));
-        if (params.get("orderDirection") == null) params.put("orderDirection", "ASC");
-        if (params.get("isRequired") == null) params.put("isRequired", "Y");
-        if (params.get("isSearchable") == null) params.put("isSearchable", "N");
-        if (params.get("placeholder") == null && params.get("levelName") != null) {
-            params.put("placeholder", params.get("levelName") + " 선택");
+        params.put("company_code", group.get("company_code"));
+        if (params.get("order_direction") == null) params.put("order_direction", "ASC");
+        if (params.get("is_required") == null) params.put("is_required", "Y");
+        if (params.get("is_searchable") == null) params.put("is_searchable", "N");
+        if (params.get("placeholder") == null && params.get("level_name") != null) {
+            params.put("placeholder", params.get("level_name") + " 선택");
         }
 
-        sqlSession.insert(NS + "insertCascadingHierarchyLevel", params);
+        sqlSession.insert(NS + "insert_cascading_hierarchy_level", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateCascadingHierarchyLevel(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> existing = sqlSession.selectOne(NS + "getCascadingHierarchyLevelInfo", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "get_cascading_hierarchy_level_info", params);
         if (existing == null) return null;
 
-        sqlSession.update(NS + "updateCascadingHierarchyLevel", params);
+        sqlSession.update(NS + "update_cascading_hierarchy_level", params);
         return params;
     }
 
     @Transactional
     public boolean deleteCascadingHierarchyLevel(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> existing = sqlSession.selectOne(NS + "getCascadingHierarchyLevelInfo", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "get_cascading_hierarchy_level_info", params);
         if (existing == null) return false;
 
-        sqlSession.delete(NS + "deleteCascadingHierarchyLevel", params);
+        sqlSession.delete(NS + "delete_cascading_hierarchy_level", params);
         return true;
     }
 
     public Map<String, Object> getLevelOptions(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
 
-        Map<String, Object> level = sqlSession.selectOne(NS + "getCascadingHierarchyLevelForOptions", params);
+        Map<String, Object> level = sqlSession.selectOne(NS + "get_cascading_hierarchy_level_for_options", params);
         if (level == null) return null;
 
         String tableName = sanitizeIdentifier((String) level.get("table_name"));
@@ -184,7 +184,7 @@ public class CascadingHierarchyService extends BaseService {
         List<Object> sqlParams = new ArrayList<>();
 
         // Parent value filter (level 2+)
-        Object parentValue = params.get("parentValue");
+        Object parentValue = params.get("parent_value");
         Object parentKeyColumn = level.get("parent_key_column");
         if (parentKeyColumn != null && !parentKeyColumn.toString().isEmpty() && parentValue != null) {
             sql.append(" AND ").append(sanitizeIdentifier(parentKeyColumn.toString())).append(" = ?");
@@ -219,15 +219,15 @@ public class CascadingHierarchyService extends BaseService {
         List<Map<String, Object>> options = jdbcTemplate.queryForList(sql.toString(), sqlParams.toArray());
 
         Map<String, Object> levelInfo = new LinkedHashMap<>();
-        levelInfo.put("levelId", level.get("level_id"));
-        levelInfo.put("levelName", level.get("level_name"));
+        levelInfo.put("level_id", level.get("level_id"));
+        levelInfo.put("level_name", level.get("level_name"));
         levelInfo.put("placeholder", level.get("placeholder"));
-        levelInfo.put("isRequired", level.get("is_required"));
-        levelInfo.put("isSearchable", level.get("is_searchable"));
+        levelInfo.put("is_required", level.get("is_required"));
+        levelInfo.put("is_searchable", level.get("is_searchable"));
 
         Map<String, Object> result = new HashMap<>();
         result.put("data", options);
-        result.put("levelInfo", levelInfo);
+        result.put("level_info", levelInfo);
         return result;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/CascadingMutualExclusionService.java b/backend-spring/src/main/java/com/erp/service/CascadingMutualExclusionService.java
index e0d07de9..bd38370b 100644
--- a/backend-spring/src/main/java/com/erp/service/CascadingMutualExclusionService.java
+++ b/backend-spring/src/main/java/com/erp/service/CascadingMutualExclusionService.java
@@ -21,46 +21,46 @@ public class CascadingMutualExclusionService extends BaseService {
     public Map<String, Object> getCascadingMutualExclusionList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getCascadingMutualExclusionListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getCascadingMutualExclusionList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_cascading_mutual_exclusion_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_cascading_mutual_exclusion_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getCascadingMutualExclusionInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getCascadingMutualExclusionInfo", params);
+        return sqlSession.selectOne(NS + "get_cascading_mutual_exclusion_info", params);
     }
 
     @Transactional
     public Map<String, Object> insertCascadingMutualExclusion(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        if (params.get("exclusionType") == null) params.put("exclusionType", "SAME_VALUE");
-        if (params.get("errorMessage") == null) params.put("errorMessage", "동일한 값을 선택할 수 없습니다");
+        if (params.get("exclusion_type") == null) params.put("exclusion_type", "SAME_VALUE");
+        if (params.get("error_message") == null) params.put("error_message", "동일한 값을 선택할 수 없습니다");
 
         // 배제 코드 자동 생성: EX_XXXX_NNN
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         Map<String, Object> countParams = new LinkedHashMap<>();
-        countParams.put("companyCode", companyCode);
-        int count = sqlSession.selectOne(NS + "getCascadingMutualExclusionCount", countParams);
+        countParams.put("company_code", companyCode);
+        int count = sqlSession.selectOne(NS + "get_cascading_mutual_exclusion_count", countParams);
         String ts = Long.toString(System.currentTimeMillis(), 36).toUpperCase();
         ts = ts.substring(Math.max(0, ts.length() - 4));
-        params.put("exclusionCode", String.format("EX_%s_%03d", ts, count + 1));
+        params.put("exclusion_code", String.format("EX_%s_%03d", ts, count + 1));
 
-        sqlSession.insert(NS + "insertCascadingMutualExclusion", params);
+        sqlSession.insert(NS + "insert_cascading_mutual_exclusion", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateCascadingMutualExclusion(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updateCascadingMutualExclusion", params);
+        sqlSession.update(NS + "update_cascading_mutual_exclusion", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteCascadingMutualExclusion(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deleteCascadingMutualExclusion", params);
+        sqlSession.delete(NS + "delete_cascading_mutual_exclusion", params);
         return params;
     }
 
@@ -69,11 +69,11 @@ public class CascadingMutualExclusionService extends BaseService {
      */
     public Map<String, Object> validateCascadingMutualExclusion(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> exclusion = sqlSession.selectOne(NS + "getCascadingMutualExclusionByCode", params);
+        Map<String, Object> exclusion = sqlSession.selectOne(NS + "get_cascading_mutual_exclusion_by_code", params);
         if (exclusion == null) throw new NoSuchElementException("상호 배제 규칙을 찾을 수 없습니다.");
 
         @SuppressWarnings("unchecked")
-        Map<String, Object> fieldValues = (Map<String, Object>) params.getOrDefault("fieldValues", Collections.emptyMap());
+        Map<String, Object> fieldValues = (Map<String, Object>) params.getOrDefault("field_values", Collections.emptyMap());
 
         String fieldNamesStr = (String) exclusion.get("field_names");
         String[] fields = fieldNamesStr != null ? fieldNamesStr.split(",") : new String[0];
@@ -112,9 +112,9 @@ public class CascadingMutualExclusionService extends BaseService {
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("isValid", isValid);
-        result.put("errorMessage", isValid ? null : errorMessage);
-        result.put("conflictingFields", conflictingFields);
+        result.put("is_valid", isValid);
+        result.put("error_message", isValid ? null : errorMessage);
+        result.put("conflicting_fields", conflictingFields);
         return result;
     }
 
@@ -123,9 +123,9 @@ public class CascadingMutualExclusionService extends BaseService {
      */
     public List<Map<String, Object>> getExcludedOptions(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
 
-        Map<String, Object> exclusion = sqlSession.selectOne(NS + "getCascadingMutualExclusionByCode", params);
+        Map<String, Object> exclusion = sqlSession.selectOne(NS + "get_cascading_mutual_exclusion_by_code", params);
         if (exclusion == null) throw new NoSuchElementException("상호 배제 규칙을 찾을 수 없습니다.");
 
         String sourceTable = (String) exclusion.get("source_table");
@@ -148,7 +148,7 @@ public class CascadingMutualExclusionService extends BaseService {
             queryParams.add(companyCode);
         }
 
-        Object selectedValuesParam = params.get("selectedValues");
+        Object selectedValuesParam = params.get("selected_values");
         if (selectedValuesParam != null) {
             List<String> excludeValues = new ArrayList<>();
             for (String v : selectedValuesParam.toString().split(",")) {
diff --git a/backend-spring/src/main/java/com/erp/service/CascadingRelationService.java b/backend-spring/src/main/java/com/erp/service/CascadingRelationService.java
index e3184828..fed26ac4 100644
--- a/backend-spring/src/main/java/com/erp/service/CascadingRelationService.java
+++ b/backend-spring/src/main/java/com/erp/service/CascadingRelationService.java
@@ -22,62 +22,62 @@ public class CascadingRelationService extends BaseService {
     public Map<String, Object> getCascadingRelationList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getCascadingRelationListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getCascadingRelationList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_cascading_relation_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_cascading_relation_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getCascadingRelationInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getCascadingRelationInfo", params);
+        return sqlSession.selectOne(NS + "get_cascading_relation_info", params);
     }
 
     public Map<String, Object> getCascadingRelationByCode(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getCascadingRelationByCode", params);
+        return sqlSession.selectOne(NS + "get_cascading_relation_by_code", params);
     }
 
     @Transactional
     public Map<String, Object> insertCascadingRelation(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        if (params.get("emptyParentMessage") == null)
-            params.put("emptyParentMessage", "상위 항목을 먼저 선택하세요");
-        if (params.get("noOptionsMessage") == null)
-            params.put("noOptionsMessage", "선택 가능한 항목이 없습니다");
-        if (params.get("loadingMessage") == null)
-            params.put("loadingMessage", "로딩 중...");
-        if (params.get("childOrderDirection") == null)
-            params.put("childOrderDirection", "ASC");
-        Object clearOnParentChange = params.get("clearOnParentChange");
+        if (params.get("empty_parent_message") == null)
+            params.put("empty_parent_message", "상위 항목을 먼저 선택하세요");
+        if (params.get("no_options_message") == null)
+            params.put("no_options_message", "선택 가능한 항목이 없습니다");
+        if (params.get("loading_message") == null)
+            params.put("loading_message", "로딩 중...");
+        if (params.get("child_order_direction") == null)
+            params.put("child_order_direction", "ASC");
+        Object clearOnParentChange = params.get("clear_on_parent_change");
         if (clearOnParentChange == null) {
-            params.put("clearOnParentChange", "Y");
+            params.put("clear_on_parent_change", "Y");
         } else if (clearOnParentChange instanceof Boolean) {
-            params.put("clearOnParentChange", Boolean.TRUE.equals(clearOnParentChange) ? "Y" : "N");
+            params.put("clear_on_parent_change", Boolean.TRUE.equals(clearOnParentChange) ? "Y" : "N");
         }
-        params.put("isActive", "Y");
-        sqlSession.insert(NS + "insertCascadingRelation", params);
+        params.put("is_active", "Y");
+        sqlSession.insert(NS + "insert_cascading_relation", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateCascadingRelation(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Object isActive = params.get("isActive");
+        Object isActive = params.get("is_active");
         if (isActive instanceof Boolean) {
-            params.put("isActive", Boolean.TRUE.equals(isActive) ? "Y" : "N");
+            params.put("is_active", Boolean.TRUE.equals(isActive) ? "Y" : "N");
         }
-        Object clearOnParentChange = params.get("clearOnParentChange");
+        Object clearOnParentChange = params.get("clear_on_parent_change");
         if (clearOnParentChange instanceof Boolean) {
-            params.put("clearOnParentChange", Boolean.TRUE.equals(clearOnParentChange) ? "Y" : "N");
+            params.put("clear_on_parent_change", Boolean.TRUE.equals(clearOnParentChange) ? "Y" : "N");
         }
-        sqlSession.update(NS + "updateCascadingRelation", params);
+        sqlSession.update(NS + "update_cascading_relation", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteCascadingRelation(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "deleteCascadingRelation", params);
+        sqlSession.update(NS + "delete_cascading_relation", params);
         return params;
     }
 
@@ -85,9 +85,9 @@ public class CascadingRelationService extends BaseService {
      * 부모 옵션 조회: relation_code로 관계 조회 후 parent_table에서 동적 쿼리
      */
     public List<Map<String, Object>> getParentOptions(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
 
-        Map<String, Object> relation = sqlSession.selectOne(NS + "getCascadingRelationByCode", params);
+        Map<String, Object> relation = sqlSession.selectOne(NS + "get_cascading_relation_by_code", params);
         if (relation == null) {
             throw new NoSuchElementException("연쇄 관계를 찾을 수 없습니다.");
         }
@@ -127,9 +127,9 @@ public class CascadingRelationService extends BaseService {
      * parentValue(단일) 또는 parentValues(콤마 구분 다중) 지원
      */
     public List<Map<String, Object>> getCascadingOptions(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
-        Object parentValueParam  = params.get("parentValue");
-        Object parentValuesParam = params.get("parentValues");
+        String companyCode = (String) params.get("company_code");
+        Object parentValueParam  = params.get("parent_value");
+        Object parentValuesParam = params.get("parent_values");
 
         List<String> parentValueArray = new ArrayList<>();
         if (parentValuesParam != null) {
@@ -145,7 +145,7 @@ public class CascadingRelationService extends BaseService {
             return Collections.emptyList();
         }
 
-        Map<String, Object> relation = sqlSession.selectOne(NS + "getCascadingRelationByCode", params);
+        Map<String, Object> relation = sqlSession.selectOne(NS + "get_cascading_relation_by_code", params);
         if (relation == null) {
             throw new NoSuchElementException("연쇄 관계를 찾을 수 없습니다.");
         }
diff --git a/backend-spring/src/main/java/com/erp/service/CategoryTreeService.java b/backend-spring/src/main/java/com/erp/service/CategoryTreeService.java
index cdde499c..cb5beb83 100644
--- a/backend-spring/src/main/java/com/erp/service/CategoryTreeService.java
+++ b/backend-spring/src/main/java/com/erp/service/CategoryTreeService.java
@@ -24,10 +24,10 @@ public class CategoryTreeService extends BaseService {
      */
     public List<Map<String, Object>> getCategoryTreeList(String companyCode, String tableName, String columnName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("tableName",   tableName);
-        params.put("columnName",  columnName);
-        List<Map<String, Object>> flatList = sqlSession.selectList(NS + "getCategoryTreeList", params);
+        params.put("company_code", companyCode);
+        params.put("table_name",   tableName);
+        params.put("column_name",  columnName);
+        List<Map<String, Object>> flatList = sqlSession.selectList(NS + "get_category_tree_list", params);
         return buildTree(flatList);
     }
 
@@ -36,10 +36,10 @@ public class CategoryTreeService extends BaseService {
      */
     public List<Map<String, Object>> getCategoryTreeFlatList(String companyCode, String tableName, String columnName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("tableName",   tableName);
-        params.put("columnName",  columnName);
-        return sqlSession.selectList(NS + "getCategoryTreeList", params);
+        params.put("company_code", companyCode);
+        params.put("table_name",   tableName);
+        params.put("column_name",  columnName);
+        return sqlSession.selectList(NS + "get_category_tree_list", params);
     }
 
     /**
@@ -47,9 +47,9 @@ public class CategoryTreeService extends BaseService {
      */
     public Map<String, Object> getCategoryTreeInfo(String companyCode, int valueId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("valueId",     valueId);
-        return sqlSession.selectOne(NS + "getCategoryTreeInfo", params);
+        params.put("company_code", companyCode);
+        params.put("value_id",     valueId);
+        return sqlSession.selectOne(NS + "get_category_tree_info", params);
     }
 
     /**
@@ -57,15 +57,15 @@ public class CategoryTreeService extends BaseService {
      */
     @Transactional
     public Map<String, Object> insertCategoryTree(Map<String, Object> body, String companyCode, String createdBy) {
-        String tableName  = (String) body.get("tableName");
-        String columnName = (String) body.get("columnName");
-        String valueCode  = (String) body.get("valueCode");
-        String valueLabel = (String) body.get("valueLabel");
+        String tableName  = (String) body.get("table_name");
+        String columnName = (String) body.get("column_name");
+        String valueCode  = (String) body.get("value_code");
+        String valueLabel = (String) body.get("value_label");
 
-        Object valueOrderRaw = body.get("valueOrder");
+        Object valueOrderRaw = body.get("value_order");
         int valueOrder = valueOrderRaw != null ? ((Number) valueOrderRaw).intValue() : 0;
 
-        Object parentValueIdRaw = body.get("parentValueId");
+        Object parentValueIdRaw = body.get("parent_value_id");
 
         // depth / path 계산
         int    depth = 1;
@@ -73,9 +73,9 @@ public class CategoryTreeService extends BaseService {
 
         if (parentValueIdRaw != null) {
             Map<String, Object> parentParams = new HashMap<>();
-            parentParams.put("companyCode", companyCode);
-            parentParams.put("valueId", ((Number) parentValueIdRaw).intValue());
-            Map<String, Object> parent = sqlSession.selectOne(NS + "getCategoryTreeInfo", parentParams);
+            parentParams.put("company_code", companyCode);
+            parentParams.put("value_id", ((Number) parentValueIdRaw).intValue());
+            Map<String, Object> parent = sqlSession.selectOne(NS + "get_category_tree_info", parentParams);
             if (parent != null) {
                 depth = ((Number) parent.get("depth")).intValue() + 1;
                 if (depth > 3) {
@@ -87,33 +87,33 @@ public class CategoryTreeService extends BaseService {
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName",     tableName);
-        params.put("columnName",    columnName);
-        params.put("valueCode",     valueCode);
-        params.put("valueLabel",    valueLabel);
-        params.put("valueOrder",    valueOrder);
-        params.put("parentValueId", parentValueIdRaw);
+        params.put("table_name",     tableName);
+        params.put("column_name",    columnName);
+        params.put("value_code",     valueCode);
+        params.put("value_label",    valueLabel);
+        params.put("value_order",    valueOrder);
+        params.put("parent_value_id", parentValueIdRaw);
         params.put("depth",         depth);
         params.put("path",          path);
         params.put("description",   body.get("description"));
         params.put("color",         body.get("color"));
         params.put("icon",          body.get("icon"));
 
-        Object isActiveRaw  = body.get("isActive");
-        Object isDefaultRaw = body.get("isDefault");
-        params.put("isActive",  isActiveRaw  != null ? isActiveRaw  : true);
-        params.put("isDefault", isDefaultRaw != null ? isDefaultRaw : false);
+        Object isActiveRaw  = body.get("is_active");
+        Object isDefaultRaw = body.get("is_default");
+        params.put("is_active",  isActiveRaw  != null ? isActiveRaw  : true);
+        params.put("is_default", isDefaultRaw != null ? isDefaultRaw : false);
 
-        params.put("companyCode", companyCode);
-        params.put("createdBy",   createdBy);
+        params.put("company_code", companyCode);
+        params.put("created_by",   createdBy);
 
-        sqlSession.insert(NS + "insertCategoryTree", params);
+        sqlSession.insert(NS + "insert_category_tree", params);
 
-        // useGeneratedKeys → params.get("valueId") 에 생성된 ID 저장
+        // useGeneratedKeys → params.get("value_id") 에 생성된 ID 저장
         Map<String, Object> fetchParams = new HashMap<>();
-        fetchParams.put("companyCode", companyCode);
-        fetchParams.put("valueId", params.get("valueId"));
-        return sqlSession.selectOne(NS + "getCategoryTreeInfo", fetchParams);
+        fetchParams.put("company_code", companyCode);
+        fetchParams.put("value_id", params.get("value_id"));
+        return sqlSession.selectOne(NS + "get_category_tree_info", fetchParams);
     }
 
     /**
@@ -123,9 +123,9 @@ public class CategoryTreeService extends BaseService {
     public Map<String, Object> updateCategoryTree(String companyCode, int valueId,
                                                    Map<String, Object> body, String updatedBy) {
         Map<String, Object> currentParams = new HashMap<>();
-        currentParams.put("companyCode", companyCode);
-        currentParams.put("valueId",     valueId);
-        Map<String, Object> current = sqlSession.selectOne(NS + "getCategoryTreeInfo", currentParams);
+        currentParams.put("company_code", companyCode);
+        currentParams.put("value_id",     valueId);
+        Map<String, Object> current = sqlSession.selectOne(NS + "get_category_tree_info", currentParams);
         if (current == null) return null;
 
         String currentLabel = (String) current.get("value_label");
@@ -133,22 +133,22 @@ public class CategoryTreeService extends BaseService {
         String currentPath  = (String) current.get("path");
         Object currentParentId = current.get("parent_value_id");
 
-        String newLabel    = body.containsKey("valueLabel") ? (String) body.get("valueLabel") : currentLabel;
+        String newLabel    = body.containsKey("value_label") ? (String) body.get("value_label") : currentLabel;
         int    newDepth    = currentDepth;
         String newPath     = currentPath;
-        Object newParentId = body.containsKey("parentValueId") ? body.get("parentValueId") : currentParentId;
+        Object newParentId = body.containsKey("parent_value_id") ? body.get("parent_value_id") : currentParentId;
 
-        boolean labelChanged  = body.containsKey("valueLabel")
+        boolean labelChanged  = body.containsKey("value_label")
                 && !Objects.equals(newLabel, currentLabel);
-        boolean parentChanged = body.containsKey("parentValueId")
-                && !Objects.equals(toLong(body.get("parentValueId")), toLong(currentParentId));
+        boolean parentChanged = body.containsKey("parent_value_id")
+                && !Objects.equals(toLong(body.get("parent_value_id")), toLong(currentParentId));
 
         if (parentChanged) {
-            if (body.get("parentValueId") != null) {
+            if (body.get("parent_value_id") != null) {
                 Map<String, Object> newParentParams = new HashMap<>();
-                newParentParams.put("companyCode", companyCode);
-                newParentParams.put("valueId", ((Number) body.get("parentValueId")).intValue());
-                Map<String, Object> newParent = sqlSession.selectOne(NS + "getCategoryTreeInfo", newParentParams);
+                newParentParams.put("company_code", companyCode);
+                newParentParams.put("value_id", ((Number) body.get("parent_value_id")).intValue());
+                Map<String, Object> newParent = sqlSession.selectOne(NS + "get_category_tree_info", newParentParams);
                 if (newParent != null) {
                     newDepth = ((Number) newParent.get("depth")).intValue() + 1;
                     if (newDepth > 3) {
@@ -164,9 +164,9 @@ public class CategoryTreeService extends BaseService {
         } else if (labelChanged) {
             if (currentParentId != null) {
                 Map<String, Object> parentParams = new HashMap<>();
-                parentParams.put("companyCode", companyCode);
-                parentParams.put("valueId", ((Number) currentParentId).intValue());
-                Map<String, Object> parent = sqlSession.selectOne(NS + "getCategoryTreeInfo", parentParams);
+                parentParams.put("company_code", companyCode);
+                parentParams.put("value_id", ((Number) currentParentId).intValue());
+                Map<String, Object> parent = sqlSession.selectOne(NS + "get_category_tree_info", parentParams);
                 String parentPath = parent != null ? (String) parent.get("path") : null;
                 newPath = parentPath != null ? parentPath + "/" + newLabel : newLabel;
             } else {
@@ -175,22 +175,22 @@ public class CategoryTreeService extends BaseService {
         }
 
         Map<String, Object> updateParams = new HashMap<>();
-        updateParams.put("companyCode",   companyCode);
-        updateParams.put("valueId",       valueId);
-        updateParams.put("valueCode",     body.get("valueCode"));
-        updateParams.put("valueLabel",    body.containsKey("valueLabel")  ? newLabel  : null);
-        updateParams.put("valueOrder",    body.get("valueOrder"));
-        updateParams.put("parentValueId", newParentId);
+        updateParams.put("company_code",   companyCode);
+        updateParams.put("value_id",       valueId);
+        updateParams.put("value_code",     body.get("value_code"));
+        updateParams.put("value_label",    body.containsKey("value_label")  ? newLabel  : null);
+        updateParams.put("value_order",    body.get("value_order"));
+        updateParams.put("parent_value_id", newParentId);
         updateParams.put("depth",         newDepth);
         updateParams.put("path",          newPath);
         updateParams.put("description",   body.get("description"));
         updateParams.put("color",         body.get("color"));
         updateParams.put("icon",          body.get("icon"));
-        updateParams.put("isActive",      body.get("isActive"));
-        updateParams.put("isDefault",     body.get("isDefault"));
-        updateParams.put("updatedBy",     updatedBy);
+        updateParams.put("is_active",      body.get("is_active"));
+        updateParams.put("is_default",     body.get("is_default"));
+        updateParams.put("updated_by",     updatedBy);
 
-        int affected = sqlSession.update(NS + "updateCategoryTree", updateParams);
+        int affected = sqlSession.update(NS + "update_category_tree", updateParams);
         if (affected == 0) return null;
 
         if (labelChanged || parentChanged) {
@@ -198,9 +198,9 @@ public class CategoryTreeService extends BaseService {
         }
 
         Map<String, Object> fetchParams = new HashMap<>();
-        fetchParams.put("companyCode", companyCode);
-        fetchParams.put("valueId",     valueId);
-        return sqlSession.selectOne(NS + "getCategoryTreeInfo", fetchParams);
+        fetchParams.put("company_code", companyCode);
+        fetchParams.put("value_id",     valueId);
+        return sqlSession.selectOne(NS + "get_category_tree_info", fetchParams);
     }
 
     /**
@@ -210,35 +210,35 @@ public class CategoryTreeService extends BaseService {
         Map<String, Object> value = getCategoryTreeInfo(companyCode, valueId);
         if (value == null) {
             Map<String, Object> res = new LinkedHashMap<>();
-            res.put("canDelete", false);
+            res.put("can_delete", false);
             res.put("reason",    "카테고리 값을 찾을 수 없습니다");
             return res;
         }
 
         Map<String, Object> childParams = new HashMap<>();
-        childParams.put("valueId",     valueId);
-        childParams.put("companyCode", companyCode);
-        Integer childCountObj = sqlSession.selectOne(NS + "getCategoryTreeChildrenCnt", childParams);
+        childParams.put("value_id",     valueId);
+        childParams.put("company_code", companyCode);
+        Integer childCountObj = sqlSession.selectOne(NS + "get_category_tree_children_cnt", childParams);
         int childCount = childCountObj != null ? childCountObj : 0;
         if (childCount > 0) {
             Map<String, Object> res = new LinkedHashMap<>();
-            res.put("canDelete", false);
+            res.put("can_delete", false);
             res.put("reason",    "하위 카테고리가 " + childCount + "개 존재합니다. 하위 카테고리를 먼저 삭제해주세요.");
             return res;
         }
 
         Map<String, Object> usage = checkCategoryValueInUse(companyCode, value);
-        boolean inUse = Boolean.TRUE.equals(usage.get("inUse"));
+        boolean inUse = Boolean.TRUE.equals(usage.get("in_use"));
         if (inUse) {
             int count = ((Number) usage.get("count")).intValue();
             Map<String, Object> res = new LinkedHashMap<>();
-            res.put("canDelete", false);
+            res.put("can_delete", false);
             res.put("reason",    "이 카테고리 값(" + value.get("value_label") + ")은 " + count + "건의 데이터에서 사용 중이므로 삭제할 수 없습니다.");
             return res;
         }
 
         Map<String, Object> res = new LinkedHashMap<>();
-        res.put("canDelete", true);
+        res.put("can_delete", true);
         return res;
     }
 
@@ -252,9 +252,9 @@ public class CategoryTreeService extends BaseService {
 
         // 1. 자식 존재 여부
         Map<String, Object> childParams = new HashMap<>();
-        childParams.put("valueId",     valueId);
-        childParams.put("companyCode", companyCode);
-        Integer childCountObj = sqlSession.selectOne(NS + "getCategoryTreeChildrenCnt", childParams);
+        childParams.put("value_id",     valueId);
+        childParams.put("company_code", companyCode);
+        Integer childCountObj = sqlSession.selectOne(NS + "get_category_tree_children_cnt", childParams);
         int childCount = childCountObj != null ? childCountObj : 0;
         if (childCount > 0) {
             throw new IllegalStateException(
@@ -263,7 +263,7 @@ public class CategoryTreeService extends BaseService {
 
         // 2. 실제 데이터 사용 여부
         Map<String, Object> usage = checkCategoryValueInUse(companyCode, value);
-        boolean inUse = Boolean.TRUE.equals(usage.get("inUse"));
+        boolean inUse = Boolean.TRUE.equals(usage.get("in_use"));
         if (inUse) {
             int count = ((Number) usage.get("count")).intValue();
             throw new IllegalStateException(
@@ -273,9 +273,9 @@ public class CategoryTreeService extends BaseService {
 
         // 3. 삭제
         Map<String, Object> deleteParams = new HashMap<>();
-        deleteParams.put("companyCode", companyCode);
-        deleteParams.put("valueId",     valueId);
-        return sqlSession.delete(NS + "deleteCategoryTree", deleteParams) > 0;
+        deleteParams.put("company_code", companyCode);
+        deleteParams.put("value_id",     valueId);
+        return sqlSession.delete(NS + "delete_category_tree", deleteParams) > 0;
     }
 
     /**
@@ -283,9 +283,9 @@ public class CategoryTreeService extends BaseService {
      */
     public List<Map<String, Object>> getCategoryTreeColumnList(String companyCode, String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName",   tableName);
-        params.put("companyCode", companyCode);
-        return sqlSession.selectList(NS + "getCategoryTreeColumnList", params);
+        params.put("table_name",   tableName);
+        params.put("company_code", companyCode);
+        return sqlSession.selectList(NS + "get_category_tree_column_list", params);
     }
 
     /**
@@ -293,8 +293,8 @@ public class CategoryTreeService extends BaseService {
      */
     public List<Map<String, Object>> getCategoryTreeKeyList(String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        return sqlSession.selectList(NS + "getCategoryTreeKeyList", params);
+        params.put("company_code", companyCode);
+        return sqlSession.selectList(NS + "get_category_tree_key_list", params);
     }
 
     // ─── private helpers ────────────────────────────────────────────────────────
@@ -333,18 +333,18 @@ public class CategoryTreeService extends BaseService {
      */
     private void updateChildrenPaths(String companyCode, int parentValueId, String parentPath) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode",   companyCode);
-        params.put("parentValueId", parentValueId);
+        params.put("company_code",   companyCode);
+        params.put("parent_value_id", parentValueId);
 
-        List<Map<String, Object>> children = sqlSession.selectList(NS + "getCategoryTreeChildrenList", params);
+        List<Map<String, Object>> children = sqlSession.selectList(NS + "get_category_tree_children_list", params);
         for (Map<String, Object> child : children) {
             String valueLabel = (String) child.get("value_label");
             String newPath    = parentPath + "/" + valueLabel;
 
             Map<String, Object> updateParams = new HashMap<>();
-            updateParams.put("valueId", child.get("value_id"));
+            updateParams.put("value_id", child.get("value_id"));
             updateParams.put("path",    newPath);
-            sqlSession.update(NS + "updateCategoryTreeChildPath", updateParams);
+            sqlSession.update(NS + "update_category_tree_child_path", updateParams);
 
             int childId = ((Number) child.get("value_id")).intValue();
             updateChildrenPaths(companyCode, childId, newPath);
@@ -360,50 +360,50 @@ public class CategoryTreeService extends BaseService {
         String columnName = (String) value.get("column_name");
         String valueCode  = (String) value.get("value_code");
 
-        Map<String, Object> notInUse = Map.of("inUse", false, "count", 0);
+        Map<String, Object> notInUse = Map.of("in_use", false, "count", 0);
 
         try {
             // 1. 테이블 존재 확인
             Map<String, Object> tableParams = new HashMap<>();
-            tableParams.put("tableName", tableName);
-            Integer teObj = sqlSession.selectOne(NS + "checkTableExists", tableParams);
+            tableParams.put("table_name", tableName);
+            Integer teObj = sqlSession.selectOne(NS + "check_table_exists", tableParams);
             if (teObj == null || teObj == 0) return notInUse;
 
             // 2. 컬럼 존재 확인
             Map<String, Object> colParams = new HashMap<>();
-            colParams.put("tableName",  tableName);
-            colParams.put("columnName", columnName);
-            Integer ceObj = sqlSession.selectOne(NS + "checkColumnExists", colParams);
+            colParams.put("table_name",  tableName);
+            colParams.put("column_name", columnName);
+            Integer ceObj = sqlSession.selectOne(NS + "check_column_exists", colParams);
             if (ceObj == null || ceObj == 0) return notInUse;
 
             // 3. company_code 컬럼 존재 확인
             Map<String, Object> companyColParams = new HashMap<>();
-            companyColParams.put("tableName",  tableName);
-            companyColParams.put("columnName", "company_code");
-            Integer ccObj = sqlSession.selectOne(NS + "checkColumnExists", companyColParams);
+            companyColParams.put("table_name",  tableName);
+            companyColParams.put("column_name", "company_code");
+            Integer ccObj = sqlSession.selectOne(NS + "check_column_exists", companyColParams);
             boolean hasCompanyCode = ccObj != null && ccObj > 0;
 
             // 4. 사용 건수 조회
             int count;
             if (hasCompanyCode && !"*".equals(companyCode)) {
                 Map<String, Object> countParams = new HashMap<>();
-                countParams.put("tableName",   tableName);
-                countParams.put("columnName",  columnName);
-                countParams.put("companyCode", companyCode);
-                countParams.put("valueCode",   valueCode);
-                Integer cntObj = sqlSession.selectOne(NS + "countCategoryUsageWithCompany", countParams);
+                countParams.put("table_name",   tableName);
+                countParams.put("column_name",  columnName);
+                countParams.put("company_code", companyCode);
+                countParams.put("value_code",   valueCode);
+                Integer cntObj = sqlSession.selectOne(NS + "count_category_usage_with_company", countParams);
                 count = cntObj != null ? cntObj : 0;
             } else {
                 Map<String, Object> countParams = new HashMap<>();
-                countParams.put("tableName",  tableName);
-                countParams.put("columnName", columnName);
-                countParams.put("valueCode",  valueCode);
-                Integer cntObj = sqlSession.selectOne(NS + "countCategoryUsage", countParams);
+                countParams.put("table_name",  tableName);
+                countParams.put("column_name", columnName);
+                countParams.put("value_code",  valueCode);
+                Integer cntObj = sqlSession.selectOne(NS + "count_category_usage", countParams);
                 count = cntObj != null ? cntObj : 0;
             }
 
             Map<String, Object> result = new HashMap<>();
-            result.put("inUse", count > 0);
+            result.put("in_use", count > 0);
             result.put("count", count);
             return result;
 
diff --git a/backend-spring/src/main/java/com/erp/service/CategoryValueCascadingService.java b/backend-spring/src/main/java/com/erp/service/CategoryValueCascadingService.java
index 5aadb3b0..a3288458 100644
--- a/backend-spring/src/main/java/com/erp/service/CategoryValueCascadingService.java
+++ b/backend-spring/src/main/java/com/erp/service/CategoryValueCascadingService.java
@@ -23,57 +23,57 @@ public class CategoryValueCascadingService extends BaseService {
     public Map<String, Object> getCategoryValueCascadingGroupList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getCategoryValueCascadingGroupListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getCategoryValueCascadingGroupList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_category_value_cascading_group_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_category_value_cascading_group_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getCategoryValueCascadingGroupInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> group = sqlSession.selectOne(NS + "getCategoryValueCascadingGroupInfo", params);
+        Map<String, Object> group = sqlSession.selectOne(NS + "get_category_value_cascading_group_info", params);
         if (group == null) return null;
 
-        List<Map<String, Object>> mappings = sqlSession.selectList(NS + "getCategoryValueCascadingMappingsByGroupId", params);
+        List<Map<String, Object>> mappings = sqlSession.selectList(NS + "get_category_value_cascading_mappings_by_group_id", params);
 
         Map<String, List<Map<String, Object>>> mappingsByParent = new LinkedHashMap<>();
         for (Map<String, Object> m : mappings) {
             String parentKey = String.valueOf(m.get("parent_value_code"));
             mappingsByParent.computeIfAbsent(parentKey, k -> new ArrayList<>()).add(Map.of(
-                    "childValueCode", m.getOrDefault("child_value_code", ""),
-                    "childValueLabel", m.getOrDefault("child_value_label", ""),
-                    "displayOrder", m.getOrDefault("display_order", 0)
+                    "child_value_code", m.getOrDefault("child_value_code", ""),
+                    "child_value_label", m.getOrDefault("child_value_label", ""),
+                    "display_order", m.getOrDefault("display_order", 0)
             ));
         }
 
         Map<String, Object> result = new LinkedHashMap<>(group);
         result.put("mappings", mappings);
-        result.put("mappingsByParent", mappingsByParent);
+        result.put("mappings_by_parent", mappingsByParent);
         return result;
     }
 
     public Map<String, Object> getCategoryValueCascadingGroupByCode(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getCategoryValueCascadingGroupByCode", params);
+        return sqlSession.selectOne(NS + "get_category_value_cascading_group_by_code", params);
     }
 
     @Transactional
     public Map<String, Object> insertCategoryValueCascadingGroup(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.insert(NS + "insertCategoryValueCascadingGroup", params);
+        sqlSession.insert(NS + "insert_category_value_cascading_group", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateCategoryValueCascadingGroup(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updateCategoryValueCascadingGroup", params);
+        sqlSession.update(NS + "update_category_value_cascading_group", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteCategoryValueCascadingGroup(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "deleteCategoryValueCascadingGroup", params);
+        sqlSession.update(NS + "delete_category_value_cascading_group", params);
         return params;
     }
 
@@ -81,10 +81,10 @@ public class CategoryValueCascadingService extends BaseService {
     @SuppressWarnings("unchecked")
     public Map<String, Object> saveCategoryValueCascadingMappings(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String companyCode = (String) params.get("companyCode");
-        Object groupId = params.get("groupId");
+        String companyCode = (String) params.get("company_code");
+        Object groupId = params.get("group_id");
 
-        sqlSession.delete(NS + "deleteCategoryValueCascadingMappingsByGroupId", params);
+        sqlSession.delete(NS + "delete_category_value_cascading_mappings_by_group_id", params);
 
         int savedCount = 0;
         Object mappingsObj = params.get("mappings");
@@ -92,24 +92,24 @@ public class CategoryValueCascadingService extends BaseService {
             List<Map<String, Object>> mappings = (List<Map<String, Object>>) mappingsObj;
             for (Map<String, Object> mapping : mappings) {
                 Map<String, Object> mappingParams = new HashMap<>(mapping);
-                mappingParams.put("groupId", groupId);
-                mappingParams.put("companyCode", companyCode);
-                sqlSession.insert(NS + "insertCategoryValueCascadingMapping", mappingParams);
+                mappingParams.put("group_id", groupId);
+                mappingParams.put("company_code", companyCode);
+                sqlSession.insert(NS + "insert_category_value_cascading_mapping", mappingParams);
                 savedCount++;
             }
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("savedCount", savedCount);
-        result.put("groupId", groupId);
+        result.put("saved_count", savedCount);
+        result.put("group_id", groupId);
         return result;
     }
 
     public Map<String, Object> getCategoryValueCascadingParentOptions(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
 
-        Map<String, Object> group = sqlSession.selectOne(NS + "getCategoryValueCascadingGroupByCode", params);
+        Map<String, Object> group = sqlSession.selectOne(NS + "get_category_value_cascading_group_by_code", params);
         if (group == null) {
             Map<String, Object> result = new LinkedHashMap<>();
             result.put("data", Collections.emptyList());
@@ -143,9 +143,9 @@ public class CategoryValueCascadingService extends BaseService {
 
     public Map<String, Object> getCategoryValueCascadingChildOptions(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
 
-        Map<String, Object> group = sqlSession.selectOne(NS + "getCategoryValueCascadingGroupByCode", params);
+        Map<String, Object> group = sqlSession.selectOne(NS + "get_category_value_cascading_group_by_code", params);
         if (group == null) {
             Map<String, Object> result = new LinkedHashMap<>();
             result.put("data", Collections.emptyList());
@@ -180,8 +180,8 @@ public class CategoryValueCascadingService extends BaseService {
     public Map<String, Object> getCategoryValueCascadingOptions(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
 
-        String parentValuesStr = params.get("parentValues") != null ? String.valueOf(params.get("parentValues")) : null;
-        String parentValue = params.get("parentValue") != null ? String.valueOf(params.get("parentValue")) : null;
+        String parentValuesStr = params.get("parent_values") != null ? String.valueOf(params.get("parent_values")) : null;
+        String parentValue = params.get("parent_value") != null ? String.valueOf(params.get("parent_value")) : null;
 
         List<String> parentValueArray = new ArrayList<>();
         if (parentValuesStr != null && !parentValuesStr.isEmpty()) {
@@ -199,7 +199,7 @@ public class CategoryValueCascadingService extends BaseService {
             return result;
         }
 
-        Map<String, Object> group = sqlSession.selectOne(NS + "getCategoryValueCascadingGroupByCode", params);
+        Map<String, Object> group = sqlSession.selectOne(NS + "get_category_value_cascading_group_by_code", params);
         if (group == null) {
             Map<String, Object> result = new LinkedHashMap<>();
             result.put("data", Collections.emptyList());
@@ -223,14 +223,14 @@ public class CategoryValueCascadingService extends BaseService {
         List<Map<String, Object>> options = jdbcTemplate.queryForList(sql, sqlParams.toArray());
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("data", options);
-        result.put("showGroupLabel", "Y".equals(showGroupLabel));
+        result.put("show_group_label", "Y".equals(showGroupLabel));
         return result;
     }
 
     public Map<String, Object> getCategoryValueCascadingMappingsByTable(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        String companyCode = (String) params.get("companyCode");
-        String tableName = (String) params.get("tableName");
+        String companyCode = (String) params.get("company_code");
+        String tableName = (String) params.get("table_name");
 
         StringBuilder groupSql = new StringBuilder(
                 "SELECT group_id, relation_code, child_column_name" +
diff --git a/backend-spring/src/main/java/com/erp/service/CodeMergeService.java b/backend-spring/src/main/java/com/erp/service/CodeMergeService.java
index 4fbe86c6..4939c5a9 100644
--- a/backend-spring/src/main/java/com/erp/service/CodeMergeService.java
+++ b/backend-spring/src/main/java/com/erp/service/CodeMergeService.java
@@ -27,8 +27,8 @@ public class CodeMergeService extends BaseService {
      */
     public Map<String, Object> getTablesWithColumn(String columnName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("columnName", columnName);
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getTablesWithColumn", params);
+        params.put("column_name", columnName);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_tables_with_column", params);
 
         List<String> tables = rows.stream()
                 .map(r -> {
@@ -39,7 +39,7 @@ public class CodeMergeService extends BaseService {
                 .collect(Collectors.toList());
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("columnName", columnName);
+        result.put("column_name", columnName);
         result.put("tables", tables);
         result.put("count", tables.size());
         return result;
@@ -52,9 +52,9 @@ public class CodeMergeService extends BaseService {
      * columnName + oldValue 기준으로 영향받을 테이블/행 수 미리보기 (DB 변경 없음)
      */
     public Map<String, Object> previewCodeMerge(Map<String, Object> body) {
-        String columnName  = str(body.get("columnName"));
-        String oldValue    = str(body.get("oldValue"));
-        String companyCode = str(body.get("companyCode"));
+        String columnName  = str(body.get("column_name"));
+        String oldValue    = str(body.get("old_value"));
+        String companyCode = str(body.get("company_code"));
 
         if (isBlank(columnName) || isBlank(oldValue)) {
             throw new IllegalArgumentException("필수 필드가 누락되었습니다. (columnName, oldValue)");
@@ -63,8 +63,8 @@ public class CodeMergeService extends BaseService {
         log.info("코드 병합 미리보기: column={}, oldValue={}, company={}", columnName, oldValue, companyCode);
 
         Map<String, Object> params = new HashMap<>();
-        params.put("columnName", columnName);
-        List<Map<String, Object>> tableRows = sqlSession.selectList(NS + "getTablesWithColumn", params);
+        params.put("column_name", columnName);
+        List<Map<String, Object>> tableRows = sqlSession.selectList(NS + "get_tables_with_column", params);
 
         List<Map<String, Object>> preview = new ArrayList<>();
         int totalRows = 0;
@@ -82,8 +82,8 @@ public class CodeMergeService extends BaseService {
                 Integer count = jdbcTemplate.queryForObject(countSql, Integer.class, oldValue, companyCode);
                 if (count != null && count > 0) {
                     Map<String, Object> item = new LinkedHashMap<>();
-                    item.put("tableName", tableName);
-                    item.put("affectedRows", count);
+                    item.put("table_name", tableName);
+                    item.put("affected_rows", count);
                     preview.add(item);
                     totalRows += count;
                 }
@@ -93,10 +93,10 @@ public class CodeMergeService extends BaseService {
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("columnName", columnName);
-        result.put("oldValue", oldValue);
+        result.put("column_name", columnName);
+        result.put("old_value", oldValue);
         result.put("preview", preview);
-        result.put("totalAffectedRows", totalRows);
+        result.put("total_affected_rows", totalRows);
         return result;
     }
 
@@ -108,10 +108,10 @@ public class CodeMergeService extends BaseService {
      */
     @Transactional
     public Map<String, Object> mergeAllTables(Map<String, Object> body) {
-        String columnName  = str(body.get("columnName"));
-        String oldValue    = str(body.get("oldValue"));
-        String newValue    = str(body.get("newValue"));
-        String companyCode = str(body.get("companyCode"));
+        String columnName  = str(body.get("column_name"));
+        String oldValue    = str(body.get("old_value"));
+        String newValue    = str(body.get("new_value"));
+        String companyCode = str(body.get("company_code"));
 
         if (isBlank(columnName) || isBlank(oldValue) || isBlank(newValue)) {
             throw new IllegalArgumentException("필수 필드가 누락되었습니다. (columnName, oldValue, newValue)");
@@ -132,19 +132,19 @@ public class CodeMergeService extends BaseService {
 
         List<Map<String, Object>> affectedTables = rows.stream().map(r -> {
             Map<String, Object> item = new LinkedHashMap<>();
-            item.put("tableName", r.get("table_name"));
-            item.put("rowsUpdated", r.get("rows_updated") != null ? ((Number) r.get("rows_updated")).intValue() : 0);
+            item.put("table_name", r.get("table_name"));
+            item.put("rows_updated", r.get("rows_updated") != null ? ((Number) r.get("rows_updated")).intValue() : 0);
             return item;
         }).collect(Collectors.toList());
 
         log.info("코드 병합 완료: 영향 테이블 {}개, 총 {}행", affectedTables.size(), totalRows);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("columnName", columnName);
-        result.put("oldValue", oldValue);
-        result.put("newValue", newValue);
-        result.put("affectedTables", affectedTables);
-        result.put("totalRowsUpdated", totalRows);
+        result.put("column_name", columnName);
+        result.put("old_value", oldValue);
+        result.put("new_value", newValue);
+        result.put("affected_tables", affectedTables);
+        result.put("total_rows_updated", totalRows);
         return result;
     }
 
@@ -157,9 +157,9 @@ public class CodeMergeService extends BaseService {
      */
     @Transactional
     public Map<String, Object> mergeByValue(Map<String, Object> body) {
-        String oldValue    = str(body.get("oldValue"));
-        String newValue    = str(body.get("newValue"));
-        String companyCode = str(body.get("companyCode"));
+        String oldValue    = str(body.get("old_value"));
+        String newValue    = str(body.get("new_value"));
+        String companyCode = str(body.get("company_code"));
 
         if (isBlank(oldValue) || isBlank(newValue)) {
             throw new IllegalArgumentException("필수 필드가 누락되었습니다. (oldValue, newValue)");
@@ -180,19 +180,19 @@ public class CodeMergeService extends BaseService {
 
         List<Map<String, Object>> affectedData = rows.stream().map(r -> {
             Map<String, Object> item = new LinkedHashMap<>();
-            item.put("tableName",   r.get("out_table_name"));
-            item.put("columnName",  r.get("out_column_name"));
-            item.put("rowsUpdated", r.get("out_rows_updated") != null ? ((Number) r.get("out_rows_updated")).intValue() : 0);
+            item.put("table_name",   r.get("out_table_name"));
+            item.put("column_name",  r.get("out_column_name"));
+            item.put("rows_updated", r.get("out_rows_updated") != null ? ((Number) r.get("out_rows_updated")).intValue() : 0);
             return item;
         }).collect(Collectors.toList());
 
         log.info("값 기반 코드 병합 완료: {} → {}, 총 {}행", oldValue, newValue, totalRows);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("oldValue", oldValue);
-        result.put("newValue", newValue);
-        result.put("affectedData", affectedData);
-        result.put("totalRowsUpdated", totalRows);
+        result.put("old_value", oldValue);
+        result.put("new_value", newValue);
+        result.put("affected_data", affectedData);
+        result.put("total_rows_updated", totalRows);
         return result;
     }
 
@@ -203,8 +203,8 @@ public class CodeMergeService extends BaseService {
      * PostgreSQL 함수 preview_merge_code_by_value(oldValue, companyCode) 호출
      */
     public Map<String, Object> previewByValue(Map<String, Object> body) {
-        String oldValue    = str(body.get("oldValue"));
-        String companyCode = str(body.get("companyCode"));
+        String oldValue    = str(body.get("old_value"));
+        String companyCode = str(body.get("company_code"));
 
         if (isBlank(oldValue)) {
             throw new IllegalArgumentException("필수 필드가 누락되었습니다. (oldValue)");
@@ -222,16 +222,16 @@ public class CodeMergeService extends BaseService {
 
         List<Map<String, Object>> preview = rows.stream().map(r -> {
             Map<String, Object> item = new LinkedHashMap<>();
-            item.put("tableName",    r.get("out_table_name"));
-            item.put("columnName",   r.get("out_column_name"));
-            item.put("affectedRows", r.get("out_affected_rows") != null ? ((Number) r.get("out_affected_rows")).intValue() : 0);
+            item.put("table_name",    r.get("out_table_name"));
+            item.put("column_name",   r.get("out_column_name"));
+            item.put("affected_rows", r.get("out_affected_rows") != null ? ((Number) r.get("out_affected_rows")).intValue() : 0);
             return item;
         }).collect(Collectors.toList());
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("oldValue", oldValue);
+        result.put("old_value", oldValue);
         result.put("preview", preview);
-        result.put("totalAffectedRows", totalRows);
+        result.put("total_affected_rows", totalRows);
         return result;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/CollectionService.java b/backend-spring/src/main/java/com/erp/service/CollectionService.java
index 2a180599..59af0efa 100644
--- a/backend-spring/src/main/java/com/erp/service/CollectionService.java
+++ b/backend-spring/src/main/java/com/erp/service/CollectionService.java
@@ -48,17 +48,17 @@ public class CollectionService extends BaseService {
     @Transactional
     public Map<String, Object> executeCollection(Map<String, Object> params) {
         Map<String, Object> job = new HashMap<>();
-        job.put("configId", params.get("id"));
-        job.put("jobStatus", "running");
+        job.put("config_id", params.get("id"));
+        job.put("job_status", "running");
         sqlSession.insert("collection.insertCollectionJob", job);
         try {
-            job.put("jobStatus", "completed");
-            job.put("recordsProcessed", 0);
+            job.put("job_status", "completed");
+            job.put("records_processed", 0);
             sqlSession.update("collection.updateCollectionJob", job);
             return job;
         } catch (Exception e) {
-            job.put("jobStatus", "failed");
-            job.put("errorMessage", e.getMessage());
+            job.put("job_status", "failed");
+            job.put("error_message", e.getMessage());
             sqlSession.update("collection.updateCollectionJob", job);
             throw e;
         }
diff --git a/backend-spring/src/main/java/com/erp/service/CommonCodeService.java b/backend-spring/src/main/java/com/erp/service/CommonCodeService.java
index f4c43000..d30d4b84 100644
--- a/backend-spring/src/main/java/com/erp/service/CommonCodeService.java
+++ b/backend-spring/src/main/java/com/erp/service/CommonCodeService.java
@@ -31,11 +31,11 @@ public class CommonCodeService extends BaseService {
         params.put("limit",  size);
         params.put("offset", (page - 1) * size);
 
-        Object isActiveRaw = params.get("isActive");
-        if (isActiveRaw != null) params.put("isActive", toActiveStr(isActiveRaw));
+        Object isActiveRaw = params.get("is_active");
+        if (isActiveRaw != null) params.put("is_active", toActiveStr(isActiveRaw));
 
-        List<Map<String, Object>> categories = sqlSession.selectList(NS + "getCommonCodeCategoryList", params);
-        Integer totalObj = sqlSession.selectOne(NS + "getCommonCodeCategoryListCnt", params);
+        List<Map<String, Object>> categories = sqlSession.selectList(NS + "get_common_code_category_list", params);
+        Integer totalObj = sqlSession.selectOne(NS + "get_common_code_category_list_cnt", params);
         int total = totalObj != null ? totalObj : 0;
 
         Map<String, Object> result = new LinkedHashMap<>();
@@ -52,21 +52,21 @@ public class CommonCodeService extends BaseService {
                                                       String excludeCode, String companyCode) {
         if (value == null || value.trim().isEmpty()) {
             Map<String, Object> result = new LinkedHashMap<>();
-            result.put("isDuplicate", false);
+            result.put("is_duplicate", false);
             result.put("message", "값을 입력해주세요.");
             return result;
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("field",       field != null ? field : "categoryCode");
+        params.put("field",       field != null ? field : "category_code");
         params.put("value",       value.trim());
-        params.put("excludeCode", excludeCode);
-        params.put("companyCode", companyCode);
-        Integer countObj = sqlSession.selectOne(NS + "getCommonCodeCategoryDuplicateByField", params);
+        params.put("exclude_code", excludeCode);
+        params.put("company_code", companyCode);
+        Integer countObj = sqlSession.selectOne(NS + "get_common_code_category_duplicate_by_field", params);
         boolean isDuplicate = countObj != null && countObj > 0;
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("isDuplicate", isDuplicate);
+        result.put("is_duplicate", isDuplicate);
         result.put("message", isDuplicate ? "이미 사용 중인 값입니다." : "사용 가능한 값입니다.");
         return result;
     }
@@ -78,23 +78,23 @@ public class CommonCodeService extends BaseService {
     @Transactional
     public Map<String, Object> insertCommonCodeCategory(Map<String, Object> body, String companyCode, String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("categoryCode",    body.get("categoryCode"));
-        params.put("categoryName",    body.get("categoryName"));
-        params.put("categoryNameEng", body.getOrDefault("categoryNameEng", null));
+        params.put("category_code",    body.get("category_code"));
+        params.put("category_name",    body.get("category_name"));
+        params.put("category_name_eng", body.getOrDefault("category_name_eng", null));
         params.put("description",     body.getOrDefault("description", null));
-        params.put("sortOrder",       body.getOrDefault("sortOrder", 0));
-        params.put("isActive",        toActiveStr(body.getOrDefault("isActive", true)));
-        params.put("menuObjid",       body.getOrDefault("menuObjid", DEFAULT_MENU_OBJID));
-        params.put("companyCode",     companyCode);
-        params.put("createdBy",       userId);
-        params.put("updatedBy",       userId);
+        params.put("sort_order",       body.getOrDefault("sort_order", 0));
+        params.put("is_active",        toActiveStr(body.getOrDefault("is_active", true)));
+        params.put("menu_objid",       body.getOrDefault("menu_objid", DEFAULT_MENU_OBJID));
+        params.put("company_code",     companyCode);
+        params.put("created_by",       userId);
+        params.put("updated_by",       userId);
 
-        sqlSession.insert(NS + "insertCommonCodeCategory", params);
+        sqlSession.insert(NS + "insert_common_code_category", params);
 
         Map<String, Object> q = new HashMap<>();
-        q.put("categoryCode", params.get("categoryCode"));
-        q.put("companyCode",  companyCode);
-        return sqlSession.selectOne(NS + "getCommonCodeCategoryInfo", q);
+        q.put("category_code", params.get("category_code"));
+        q.put("company_code",  companyCode);
+        return sqlSession.selectOne(NS + "get_common_code_category_info", q);
     }
 
     // ══════════════════════════════════════════════════════════════
@@ -105,23 +105,23 @@ public class CommonCodeService extends BaseService {
     public Map<String, Object> updateCommonCodeCategory(String categoryCode, Map<String, Object> body,
                                                         String companyCode, String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("categoryCode", categoryCode);
-        params.put("companyCode",  companyCode);
-        params.put("updatedBy",    userId);
+        params.put("category_code", categoryCode);
+        params.put("company_code",  companyCode);
+        params.put("updated_by",    userId);
 
-        if (body.containsKey("categoryName"))    params.put("categoryName",    body.get("categoryName"));
-        if (body.containsKey("categoryNameEng")) params.put("categoryNameEng", body.get("categoryNameEng"));
+        if (body.containsKey("category_name"))    params.put("category_name",    body.get("category_name"));
+        if (body.containsKey("category_name_eng")) params.put("category_name_eng", body.get("category_name_eng"));
         if (body.containsKey("description"))     params.put("description",     body.get("description"));
-        if (body.containsKey("sortOrder"))       params.put("sortOrder",       body.get("sortOrder"));
-        if (body.containsKey("isActive"))        params.put("isActive",        toActiveStr(body.get("isActive")));
+        if (body.containsKey("sort_order"))       params.put("sort_order",       body.get("sort_order"));
+        if (body.containsKey("is_active"))        params.put("is_active",        toActiveStr(body.get("is_active")));
 
-        int updated = sqlSession.update(NS + "updateCommonCodeCategory", params);
+        int updated = sqlSession.update(NS + "update_common_code_category", params);
         if (updated == 0) return null;
 
         Map<String, Object> q = new HashMap<>();
-        q.put("categoryCode", categoryCode);
-        q.put("companyCode",  companyCode);
-        return sqlSession.selectOne(NS + "getCommonCodeCategoryInfo", q);
+        q.put("category_code", categoryCode);
+        q.put("company_code",  companyCode);
+        return sqlSession.selectOne(NS + "get_common_code_category_info", q);
     }
 
     // ══════════════════════════════════════════════════════════════
@@ -131,9 +131,9 @@ public class CommonCodeService extends BaseService {
     @Transactional
     public void deleteCommonCodeCategory(String categoryCode, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("categoryCode", categoryCode);
-        params.put("companyCode",  companyCode);
-        int deleted = sqlSession.delete(NS + "deleteCommonCodeCategory", params);
+        params.put("category_code", categoryCode);
+        params.put("company_code",  companyCode);
+        int deleted = sqlSession.delete(NS + "delete_common_code_category", params);
         if (deleted == 0) throw new IllegalArgumentException("카테고리를 찾을 수 없습니다.");
     }
 
@@ -144,15 +144,15 @@ public class CommonCodeService extends BaseService {
     public Map<String, Object> getCommonCodeList(String categoryCode, Map<String, Object> params) {
         int page = toInt(params.get("page"), 1);
         int size = toInt(params.get("size"), 20);
-        params.put("categoryCode", categoryCode);
+        params.put("category_code", categoryCode);
         params.put("limit",        size);
         params.put("offset",       (page - 1) * size);
 
-        Object isActiveRaw = params.get("isActive");
-        if (isActiveRaw != null) params.put("isActive", toActiveStr(isActiveRaw));
+        Object isActiveRaw = params.get("is_active");
+        if (isActiveRaw != null) params.put("is_active", toActiveStr(isActiveRaw));
 
-        List<Map<String, Object>> rawList = sqlSession.selectList(NS + "getCommonCodeList", params);
-        Integer totalObj = sqlSession.selectOne(NS + "getCommonCodeListCnt", params);
+        List<Map<String, Object>> rawList = sqlSession.selectList(NS + "get_common_code_list", params);
+        Integer totalObj = sqlSession.selectOne(NS + "get_common_code_list_cnt", params);
         int total = totalObj != null ? totalObj : 0;
 
         List<Map<String, Object>> codes = new ArrayList<>();
@@ -174,22 +174,22 @@ public class CommonCodeService extends BaseService {
                                                   String excludeCode, String companyCode) {
         if (value == null || value.trim().isEmpty()) {
             Map<String, Object> result = new LinkedHashMap<>();
-            result.put("isDuplicate", false);
+            result.put("is_duplicate", false);
             result.put("message", "값을 입력해주세요.");
             return result;
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("categoryCode", categoryCode);
-        params.put("field",        field != null ? field : "codeValue");
+        params.put("category_code", categoryCode);
+        params.put("field",        field != null ? field : "code_value");
         params.put("value",        value.trim());
-        params.put("excludeCode",  excludeCode);
-        params.put("companyCode",  companyCode);
-        Integer countObj = sqlSession.selectOne(NS + "getCommonCodeDuplicateByField", params);
+        params.put("exclude_code",  excludeCode);
+        params.put("company_code",  companyCode);
+        Integer countObj = sqlSession.selectOne(NS + "get_common_code_duplicate_by_field", params);
         boolean isDuplicate = countObj != null && countObj > 0;
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("isDuplicate", isDuplicate);
+        result.put("is_duplicate", isDuplicate);
         result.put("message", isDuplicate ? "이미 사용 중인 값입니다." : "사용 가능한 값입니다.");
         return result;
     }
@@ -202,39 +202,39 @@ public class CommonCodeService extends BaseService {
     public Map<String, Object> insertCommonCode(String categoryCode, Map<String, Object> body,
                                                 String companyCode, String userId) {
         // parentCodeValue 기반 depth 자동 계산
-        Object parentCodeValueRaw = body.getOrDefault("parentCodeValue", null);
+        Object parentCodeValueRaw = body.getOrDefault("parent_code_value", null);
         int depth = 1;
         if (parentCodeValueRaw != null && !parentCodeValueRaw.toString().isEmpty()) {
             Map<String, Object> parentParams = new HashMap<>();
-            parentParams.put("categoryCode", categoryCode);
-            parentParams.put("codeValue",    parentCodeValueRaw.toString());
-            parentParams.put("companyCode",  companyCode);
-            Integer parentDepth = sqlSession.selectOne(NS + "getCommonCodeParentDepth", parentParams);
+            parentParams.put("category_code", categoryCode);
+            parentParams.put("code_value",    parentCodeValueRaw.toString());
+            parentParams.put("company_code",  companyCode);
+            Integer parentDepth = sqlSession.selectOne(NS + "get_common_code_parent_depth", parentParams);
             depth = (parentDepth != null ? parentDepth : 0) + 1;
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("categoryCode",    categoryCode);
-        params.put("codeValue",       body.get("codeValue"));
-        params.put("codeName",        body.get("codeName"));
-        params.put("codeNameEng",     body.getOrDefault("codeNameEng",     null));
+        params.put("category_code",    categoryCode);
+        params.put("code_value",       body.get("code_value"));
+        params.put("code_name",        body.get("code_name"));
+        params.put("code_name_eng",     body.getOrDefault("code_name_eng",     null));
         params.put("description",     body.getOrDefault("description",     null));
-        params.put("sortOrder",       body.getOrDefault("sortOrder",       0));
-        params.put("isActive",        toActiveStr(body.getOrDefault("isActive", true)));
-        params.put("menuObjid",       body.getOrDefault("menuObjid",       DEFAULT_MENU_OBJID));
-        params.put("companyCode",     companyCode);
-        params.put("parentCodeValue", parentCodeValueRaw);
+        params.put("sort_order",       body.getOrDefault("sort_order",       0));
+        params.put("is_active",        toActiveStr(body.getOrDefault("is_active", true)));
+        params.put("menu_objid",       body.getOrDefault("menu_objid",       DEFAULT_MENU_OBJID));
+        params.put("company_code",     companyCode);
+        params.put("parent_code_value", parentCodeValueRaw);
         params.put("depth",           depth);
-        params.put("createdBy",       userId);
-        params.put("updatedBy",       userId);
+        params.put("created_by",       userId);
+        params.put("updated_by",       userId);
 
-        sqlSession.insert(NS + "insertCommonCode", params);
+        sqlSession.insert(NS + "insert_common_code", params);
 
         Map<String, Object> q = new HashMap<>();
-        q.put("categoryCode", categoryCode);
-        q.put("codeValue",    params.get("codeValue"));
-        q.put("companyCode",  companyCode);
-        Map<String, Object> raw = sqlSession.selectOne(NS + "getCommonCodeInfo", q);
+        q.put("category_code", categoryCode);
+        q.put("code_value",    params.get("code_value"));
+        q.put("company_code",  companyCode);
+        Map<String, Object> raw = sqlSession.selectOne(NS + "get_common_code_info", q);
         return raw != null ? transformCode(raw) : null;
     }
 
@@ -246,11 +246,11 @@ public class CommonCodeService extends BaseService {
     public void updateCommonCodeOrder(String categoryCode, List<Map<String, Object>> codes, String companyCode) {
         for (Map<String, Object> code : codes) {
             Map<String, Object> params = new HashMap<>();
-            params.put("categoryCode", categoryCode);
-            params.put("codeValue",    code.get("codeValue"));
-            params.put("sortOrder",    code.get("sortOrder"));
-            params.put("companyCode",  companyCode);
-            sqlSession.update(NS + "updateCommonCodeSortOrder", params);
+            params.put("category_code", categoryCode);
+            params.put("code_value",    code.get("code_value"));
+            params.put("sort_order",    code.get("sort_order"));
+            params.put("company_code",  companyCode);
+            sqlSession.update(NS + "update_common_code_sort_order", params);
         }
     }
 
@@ -259,15 +259,15 @@ public class CommonCodeService extends BaseService {
     // ══════════════════════════════════════════════════════════════
 
     public List<Map<String, Object>> getCommonCodeHierarchicalList(String categoryCode, Map<String, Object> params) {
-        params.put("categoryCode", categoryCode);
+        params.put("category_code", categoryCode);
 
-        Object isActiveRaw = params.get("isActive");
-        if (isActiveRaw != null) params.put("isActive", toActiveStr(isActiveRaw));
-        else                     params.remove("isActive");
+        Object isActiveRaw = params.get("is_active");
+        if (isActiveRaw != null) params.put("is_active", toActiveStr(isActiveRaw));
+        else                     params.remove("is_active");
 
         // parentCodeValue, depth 필터는 params에 그대로 전달 (XML에서 처리)
 
-        List<Map<String, Object>> rawList = sqlSession.selectList(NS + "getCommonCodeHierarchicalList", params);
+        List<Map<String, Object>> rawList = sqlSession.selectList(NS + "get_common_code_hierarchical_list", params);
         List<Map<String, Object>> result = new ArrayList<>();
         for (Map<String, Object> raw : rawList) {
             result.add(transformCode(raw));
@@ -281,10 +281,10 @@ public class CommonCodeService extends BaseService {
 
     public Map<String, Object> getCommonCodeTree(String categoryCode, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("categoryCode", categoryCode);
-        params.put("companyCode",  companyCode);
+        params.put("category_code", categoryCode);
+        params.put("company_code",  companyCode);
 
-        List<Map<String, Object>> flatList = sqlSession.selectList(NS + "getCommonCodeTreeList", params);
+        List<Map<String, Object>> flatList = sqlSession.selectList(NS + "get_common_code_tree_list", params);
 
         List<Map<String, Object>> flatTransformed = new ArrayList<>();
         for (Map<String, Object> raw : flatList) {
@@ -303,14 +303,14 @@ public class CommonCodeService extends BaseService {
 
     public Map<String, Object> hasChildren(String categoryCode, String codeValue, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("categoryCode", categoryCode);
-        params.put("codeValue",    codeValue);
-        params.put("companyCode",  companyCode);
-        Integer countObj = sqlSession.selectOne(NS + "getCommonCodeChildrenCnt", params);
+        params.put("category_code", categoryCode);
+        params.put("code_value",    codeValue);
+        params.put("company_code",  companyCode);
+        Integer countObj = sqlSession.selectOne(NS + "get_common_code_children_cnt", params);
         int count = countObj != null ? countObj : 0;
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("hasChildren", count > 0);
+        result.put("has_children", count > 0);
         return result;
     }
 
@@ -322,27 +322,27 @@ public class CommonCodeService extends BaseService {
     public Map<String, Object> updateCommonCode(String categoryCode, String codeValue,
                                                 Map<String, Object> body, String companyCode, String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("categoryCode", categoryCode);
-        params.put("codeValue",    codeValue);
-        params.put("companyCode",  companyCode);
-        params.put("updatedBy",    userId);
+        params.put("category_code", categoryCode);
+        params.put("code_value",    codeValue);
+        params.put("company_code",  companyCode);
+        params.put("updated_by",    userId);
 
-        if (body.containsKey("codeName"))    params.put("codeName",    body.get("codeName"));
-        if (body.containsKey("codeNameEng")) params.put("codeNameEng", body.get("codeNameEng"));
+        if (body.containsKey("code_name"))    params.put("code_name",    body.get("code_name"));
+        if (body.containsKey("code_name_eng")) params.put("code_name_eng", body.get("code_name_eng"));
         if (body.containsKey("description")) params.put("description", body.get("description"));
-        if (body.containsKey("sortOrder"))   params.put("sortOrder",   body.get("sortOrder"));
-        if (body.containsKey("isActive"))    params.put("isActive",    toActiveStr(body.get("isActive")));
+        if (body.containsKey("sort_order"))   params.put("sort_order",   body.get("sort_order"));
+        if (body.containsKey("is_active"))    params.put("is_active",    toActiveStr(body.get("is_active")));
 
-        if (body.containsKey("parentCodeValue")) {
-            Object newParent = body.get("parentCodeValue");
-            params.put("parentCodeValue", newParent);
+        if (body.containsKey("parent_code_value")) {
+            Object newParent = body.get("parent_code_value");
+            params.put("parent_code_value", newParent);
             // parentCodeValue 변경 시 depth 재계산
             if (newParent != null && !newParent.toString().isEmpty()) {
                 Map<String, Object> parentParams = new HashMap<>();
-                parentParams.put("categoryCode", categoryCode);
-                parentParams.put("codeValue",    newParent.toString());
-                parentParams.put("companyCode",  companyCode);
-                Integer parentDepth = sqlSession.selectOne(NS + "getCommonCodeParentDepth", parentParams);
+                parentParams.put("category_code", categoryCode);
+                parentParams.put("code_value",    newParent.toString());
+                parentParams.put("company_code",  companyCode);
+                Integer parentDepth = sqlSession.selectOne(NS + "get_common_code_parent_depth", parentParams);
                 params.put("depth", (parentDepth != null ? parentDepth : 0) + 1);
             } else {
                 params.put("depth", 1);
@@ -351,14 +351,14 @@ public class CommonCodeService extends BaseService {
             params.put("depth", body.get("depth"));
         }
 
-        int updated = sqlSession.update(NS + "updateCommonCode", params);
+        int updated = sqlSession.update(NS + "update_common_code", params);
         if (updated == 0) return null;
 
         Map<String, Object> q = new HashMap<>();
-        q.put("categoryCode", categoryCode);
-        q.put("codeValue",    codeValue);
-        q.put("companyCode",  companyCode);
-        Map<String, Object> raw = sqlSession.selectOne(NS + "getCommonCodeInfo", q);
+        q.put("category_code", categoryCode);
+        q.put("code_value",    codeValue);
+        q.put("company_code",  companyCode);
+        Map<String, Object> raw = sqlSession.selectOne(NS + "get_common_code_info", q);
         return raw != null ? transformCode(raw) : null;
     }
 
@@ -369,10 +369,10 @@ public class CommonCodeService extends BaseService {
     @Transactional
     public void deleteCommonCode(String categoryCode, String codeValue, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("categoryCode", categoryCode);
-        params.put("codeValue",    codeValue);
-        params.put("companyCode",  companyCode);
-        int deleted = sqlSession.delete(NS + "deleteCommonCode", params);
+        params.put("category_code", categoryCode);
+        params.put("code_value",    codeValue);
+        params.put("company_code",  companyCode);
+        int deleted = sqlSession.delete(NS + "delete_common_code", params);
         if (deleted == 0) throw new IllegalArgumentException("코드를 찾을 수 없습니다.");
     }
 
@@ -381,19 +381,19 @@ public class CommonCodeService extends BaseService {
     // ══════════════════════════════════════════════════════════════
 
     public List<Map<String, Object>> getCommonCodeOptionList(String categoryCode, Map<String, Object> params) {
-        params.put("categoryCode", categoryCode);
+        params.put("category_code", categoryCode);
 
-        Object isActiveRaw = params.get("isActive");
+        Object isActiveRaw = params.get("is_active");
         // 미지정 시 활성 코드만 반환 (드롭다운 기본 동작)
-        params.put("isActive", isActiveRaw != null ? toActiveStr(isActiveRaw) : "Y");
+        params.put("is_active", isActiveRaw != null ? toActiveStr(isActiveRaw) : "Y");
 
-        List<Map<String, Object>> rawList = sqlSession.selectList(NS + "getCommonCodeOptionList", params);
+        List<Map<String, Object>> rawList = sqlSession.selectList(NS + "get_common_code_option_list", params);
         List<Map<String, Object>> options = new ArrayList<>();
         for (Map<String, Object> raw : rawList) {
             Map<String, Object> opt = new LinkedHashMap<>();
             opt.put("value",    raw.get("code_value"));
             opt.put("label",    raw.get("code_name"));
-            opt.put("labelEng", raw.get("code_name_eng"));
+            opt.put("label_eng", raw.get("code_name_eng"));
             options.add(opt);
         }
         return options;
@@ -406,19 +406,19 @@ public class CommonCodeService extends BaseService {
     /** snake_case 원본 + camelCase 별칭을 모두 포함하는 Map 반환 */
     private Map<String, Object> transformCode(Map<String, Object> raw) {
         Map<String, Object> item = new LinkedHashMap<>(raw);
-        item.put("codeValue",       raw.get("code_value"));
-        item.put("codeName",        raw.get("code_name"));
-        item.put("codeNameEng",     raw.get("code_name_eng"));
-        item.put("codeCategory",    raw.get("code_category"));
-        item.put("sortOrder",       raw.get("sort_order"));
-        item.put("isActive",        raw.get("is_active"));
-        item.put("menuObjid",       raw.get("menu_objid"));
-        item.put("companyCode",     raw.get("company_code"));
-        item.put("parentCodeValue", raw.get("parent_code_value"));
-        item.put("createdBy",       raw.get("created_by"));
-        item.put("updatedBy",       raw.get("updated_by"));
-        item.put("createdDate",     raw.get("created_date"));
-        item.put("updatedDate",     raw.get("updated_date"));
+        item.put("code_value",       raw.get("code_value"));
+        item.put("code_name",        raw.get("code_name"));
+        item.put("code_name_eng",     raw.get("code_name_eng"));
+        item.put("code_category",    raw.get("code_category"));
+        item.put("sort_order",       raw.get("sort_order"));
+        item.put("is_active",        raw.get("is_active"));
+        item.put("menu_objid",       raw.get("menu_objid"));
+        item.put("company_code",     raw.get("company_code"));
+        item.put("parent_code_value", raw.get("parent_code_value"));
+        item.put("created_by",       raw.get("created_by"));
+        item.put("updated_by",       raw.get("updated_by"));
+        item.put("created_date",     raw.get("created_date"));
+        item.put("updated_date",     raw.get("updated_date"));
         return item;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/CommonService.java b/backend-spring/src/main/java/com/erp/service/CommonService.java
index 9e28c1d1..2631fdc8 100644
--- a/backend-spring/src/main/java/com/erp/service/CommonService.java
+++ b/backend-spring/src/main/java/com/erp/service/CommonService.java
@@ -20,9 +20,9 @@ public class CommonService extends BaseService {
      * company_code 필터 적용: SUPER_ADMIN("*")은 전체 조회, 나머지는 자사 데이터만
      */
     public void applyCompanyCodeFilter(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         if ("*".equals(companyCode)) {
-            params.put("companyCode", "*");
+            params.put("company_code", "*");
         }
     }
 
@@ -48,7 +48,7 @@ public class CommonService extends BaseService {
     public Map<String, Object> buildListResponse(List<Map<String, Object>> list, int totalCount, Map<String, Object> params) {
         Map<String, Object> result = new HashMap<>();
         result.put("list", list);
-        result.put("totalCount", totalCount);
+        result.put("total_count", totalCount);
         Object limitObj = params.get("limit");
         Object pageObj = params.get("page");
         if (limitObj != null) {
@@ -56,7 +56,7 @@ public class CommonService extends BaseService {
             int page = pageObj != null ? Integer.parseInt(pageObj.toString()) : 1;
             result.put("limit", limit);
             result.put("page", page);
-            result.put("totalPage", (int) Math.ceil((double) totalCount / limit));
+            result.put("total_page", (int) Math.ceil((double) totalCount / limit));
         }
         return result;
     }
@@ -95,6 +95,6 @@ public class CommonService extends BaseService {
      */
     public List<Map<String, Object>> getCodeList(Map<String, Object> params) {
         applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "selectCodeList", params);
+        return sqlSession.selectList(NS + "select_code_list", params);
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/CompanyManagementService.java b/backend-spring/src/main/java/com/erp/service/CompanyManagementService.java
index 84bbb241..98734ff5 100644
--- a/backend-spring/src/main/java/com/erp/service/CompanyManagementService.java
+++ b/backend-spring/src/main/java/com/erp/service/CompanyManagementService.java
@@ -34,12 +34,12 @@ public class CompanyManagementService extends BaseService {
 
     @Transactional
     public Map<String, Object> deleteCompany(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
-        boolean createBackup = !Boolean.FALSE.equals(params.get("createBackup")); // 기본 true
+        String companyCode = (String) params.get("company_code");
+        boolean createBackup = !Boolean.FALSE.equals(params.get("create_backup")); // 기본 true
 
         // 1. 회사 존재 확인
         Map<String, Object> existing = sqlSession.selectOne("companyManagement.selectCompanyByCode",
-                Map.of("companyCode", companyCode));
+                Map.of("company_code", companyCode));
         if (existing == null) {
             throw new IllegalArgumentException("존재하지 않는 회사입니다.");
         }
@@ -56,14 +56,14 @@ public class CompanyManagementService extends BaseService {
         }
 
         // 3. DB soft delete
-        sqlSession.update("companyManagement.softDeleteCompany", Map.of("companyCode", companyCode));
+        sqlSession.update("companyManagement.softDeleteCompany", Map.of("company_code", companyCode));
         log.info("회사 삭제 완료: companyCode={}, companyName={}", companyCode, companyName);
 
         Map<String, Object> data = new LinkedHashMap<>();
-        data.put("companyCode", companyCode);
-        data.put("companyName", companyName);
-        data.put("backupCreated", createBackup);
-        data.put("deletedAt", Instant.now().toString());
+        data.put("company_code", companyCode);
+        data.put("company_name", companyName);
+        data.put("backup_created", createBackup);
+        data.put("deleted_at", Instant.now().toString());
         return data;
     }
 
@@ -76,11 +76,11 @@ public class CompanyManagementService extends BaseService {
         long[] stats = calculateDirStats(companyDir);
 
         Map<String, Object> data = new LinkedHashMap<>();
-        data.put("companyCode", companyCode);
-        data.put("fileCount", stats[0]);
-        data.put("totalSize", stats[1]);
-        data.put("totalSizeMB", toMB(stats[1]));
-        data.put("lastChecked", Instant.now().toString());
+        data.put("company_code", companyCode);
+        data.put("file_count", stats[0]);
+        data.put("total_size", stats[1]);
+        data.put("total_size_mb", toMB(stats[1]));
+        data.put("last_checked", Instant.now().toString());
         return data;
     }
 
@@ -103,10 +103,10 @@ public class CompanyManagementService extends BaseService {
             long[] stats = calculateDirStats(dir);
 
             Map<String, Object> entry = new LinkedHashMap<>();
-            entry.put("companyCode", code);
-            entry.put("fileCount", stats[0]);
-            entry.put("totalSize", stats[1]);
-            entry.put("totalSizeMB", toMB(stats[1]));
+            entry.put("company_code", code);
+            entry.put("file_count", stats[0]);
+            entry.put("total_size", stats[1]);
+            entry.put("total_size_mb", toMB(stats[1]));
             companies.add(entry);
 
             totalFiles += stats[0];
@@ -114,15 +114,15 @@ public class CompanyManagementService extends BaseService {
         }
 
         Map<String, Object> summary = new LinkedHashMap<>();
-        summary.put("totalCompanies", companies.size());
-        summary.put("totalFiles", totalFiles);
-        summary.put("totalSize", totalSize);
-        summary.put("totalSizeMB", toMB(totalSize));
+        summary.put("total_companies", companies.size());
+        summary.put("total_files", totalFiles);
+        summary.put("total_size", totalSize);
+        summary.put("total_size_mb", toMB(totalSize));
 
         Map<String, Object> data = new LinkedHashMap<>();
         data.put("companies", companies);
         data.put("summary", summary);
-        data.put("lastChecked", Instant.now().toString());
+        data.put("last_checked", Instant.now().toString());
         return data;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/ComponentStandardService.java b/backend-spring/src/main/java/com/erp/service/ComponentStandardService.java
index e53de99b..dddd43da 100644
--- a/backend-spring/src/main/java/com/erp/service/ComponentStandardService.java
+++ b/backend-spring/src/main/java/com/erp/service/ComponentStandardService.java
@@ -45,19 +45,19 @@ public class ComponentStandardService extends BaseService {
 
         // 정렬 컬럼 화이트리스트 검증
         String sort = str(params.getOrDefault("sort", "sort_order"));
-        params.put("sortColumn", VALID_SORT_COLUMNS.contains(sort) ? sort : "sort_order");
-        params.put("sortOrder",  "desc".equalsIgnoreCase(str(params.get("order"))) ? "DESC" : "ASC");
+        params.put("sort_column", VALID_SORT_COLUMNS.contains(sort) ? sort : "sort_order");
+        params.put("sort_order",  "desc".equalsIgnoreCase(str(params.get("order"))) ? "DESC" : "ASC");
 
         // 검색 패턴
         if (params.get("search") != null) {
-            params.put("searchPattern", "%" + params.get("search") + "%");
+            params.put("search_pattern", "%" + params.get("search") + "%");
         }
 
         // 페이지네이션
         commonService.applyPagination(params);
 
-        List<Map<String, Object>> components = sqlSession.selectList(NS + "selectComponentList", params);
-        Integer totalObj = sqlSession.selectOne(NS + "countComponents", params);
+        List<Map<String, Object>> components = sqlSession.selectList(NS + "select_component_list", params);
+        Integer totalObj = sqlSession.selectOne(NS + "count_components", params);
         int total = totalObj != null ? totalObj : 0;
 
         Map<String, Object> result = new LinkedHashMap<>();
@@ -74,7 +74,7 @@ public class ComponentStandardService extends BaseService {
 
     public Map<String, Object> getComponent(String componentCode) {
         Map<String, Object> params = Map.of("component_code", componentCode);
-        Map<String, Object> component = sqlSession.selectOne(NS + "selectComponent", params);
+        Map<String, Object> component = sqlSession.selectOne(NS + "select_component", params);
         if (component == null) {
             throw new RuntimeException("컴포넌트를 찾을 수 없습니다: " + componentCode);
         }
@@ -88,7 +88,7 @@ public class ComponentStandardService extends BaseService {
     @Transactional
     public Map<String, Object> createComponent(Map<String, Object> params) {
         // 중복 코드 확인
-        if (sqlSession.selectOne(NS + "checkDuplicate", params) != null) {
+        if (sqlSession.selectOne(NS + "check_duplicate", params) != null) {
             throw new RuntimeException("이미 존재하는 컴포넌트 코드입니다: " + params.get("component_code"));
         }
 
@@ -105,8 +105,8 @@ public class ComponentStandardService extends BaseService {
         // JSONB 필드 직렬화
         serializeJsonFields(params);
 
-        sqlSession.insert(NS + "insertComponent", params);
-        return sqlSession.selectOne(NS + "selectComponent", Map.of("component_code", params.get("component_code")));
+        sqlSession.insert(NS + "insert_component", params);
+        return sqlSession.selectOne(NS + "select_component", Map.of("component_code", params.get("component_code")));
     }
 
     // ══════════════════════════════════════════════════════════
@@ -126,8 +126,8 @@ public class ComponentStandardService extends BaseService {
         data.put("component_code", componentCode);
         serializeJsonFields(data);
 
-        sqlSession.update(NS + "updateComponent", data);
-        return sqlSession.selectOne(NS + "selectComponent", Map.of("component_code", componentCode));
+        sqlSession.update(NS + "update_component", data);
+        return sqlSession.selectOne(NS + "select_component", Map.of("component_code", componentCode));
     }
 
     // ══════════════════════════════════════════════════════════
@@ -137,7 +137,7 @@ public class ComponentStandardService extends BaseService {
     @Transactional
     public Map<String, Object> deleteComponent(String componentCode) {
         getComponent(componentCode); // 존재 확인
-        sqlSession.delete(NS + "deleteComponent", Map.of("component_code", componentCode));
+        sqlSession.delete(NS + "delete_component", Map.of("component_code", componentCode));
         return Map.of("message", "컴포넌트가 삭제되었습니다: " + componentCode);
     }
 
@@ -148,7 +148,7 @@ public class ComponentStandardService extends BaseService {
     @Transactional
     public Map<String, Object> updateSortOrder(List<Map<String, Object>> updates) {
         for (Map<String, Object> item : updates) {
-            sqlSession.update(NS + "updateSortOrder", item);
+            sqlSession.update(NS + "update_sort_order", item);
         }
         return Map.of("message", "정렬 순서가 업데이트되었습니다.");
     }
@@ -164,7 +164,7 @@ public class ComponentStandardService extends BaseService {
         // 새 코드 중복 확인
         Map<String, Object> dupCheck = new HashMap<>();
         dupCheck.put("component_code", newCode);
-        if (sqlSession.selectOne(NS + "checkDuplicate", dupCheck) != null) {
+        if (sqlSession.selectOne(NS + "check_duplicate", dupCheck) != null) {
             throw new RuntimeException("이미 존재하는 컴포넌트 코드입니다: " + newCode);
         }
 
@@ -173,8 +173,8 @@ public class ComponentStandardService extends BaseService {
         newComponent.put("component_name", newName);
 
         serializeJsonFields(newComponent);
-        sqlSession.insert(NS + "insertComponent", newComponent);
-        return sqlSession.selectOne(NS + "selectComponent", Map.of("component_code", newCode));
+        sqlSession.insert(NS + "insert_component", newComponent);
+        return sqlSession.selectOne(NS + "select_component", Map.of("component_code", newCode));
     }
 
     // ══════════════════════════════════════════════════════════
@@ -182,7 +182,7 @@ public class ComponentStandardService extends BaseService {
     // ══════════════════════════════════════════════════════════
 
     public List<String> getCategories(Map<String, Object> params) {
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "selectCategories", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "select_categories", params);
         List<String> categories = new ArrayList<>();
         for (Map<String, Object> row : rows) {
             Object cat = row.get("category");
@@ -196,10 +196,10 @@ public class ComponentStandardService extends BaseService {
     // ══════════════════════════════════════════════════════════
 
     public Map<String, Object> getStatistics(Map<String, Object> params) {
-        Integer totalObj = sqlSession.selectOne(NS + "countStatisticsTotal", params);
+        Integer totalObj = sqlSession.selectOne(NS + "count_statistics_total", params);
         int total = totalObj != null ? totalObj : 0;
 
-        List<Map<String, Object>> byCategoryRaw = sqlSession.selectList(NS + "selectStatisticsByCategory", params);
+        List<Map<String, Object>> byCategoryRaw = sqlSession.selectList(NS + "select_statistics_by_category", params);
         List<Map<String, Object>> byCategory = new ArrayList<>();
         for (Map<String, Object> row : byCategoryRaw) {
             Map<String, Object> item = new LinkedHashMap<>();
@@ -208,7 +208,7 @@ public class ComponentStandardService extends BaseService {
             byCategory.add(item);
         }
 
-        List<Map<String, Object>> byStatusRaw = sqlSession.selectList(NS + "selectStatisticsByStatus");
+        List<Map<String, Object>> byStatusRaw = sqlSession.selectList(NS + "select_statistics_by_status");
         List<Map<String, Object>> byStatus = new ArrayList<>();
         for (Map<String, Object> row : byStatusRaw) {
             Map<String, Object> item = new LinkedHashMap<>();
@@ -219,8 +219,8 @@ public class ComponentStandardService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("total",      total);
-        result.put("byCategory", byCategory);
-        result.put("byStatus",   byStatus);
+        result.put("by_category", byCategory);
+        result.put("by_status",   byStatus);
         return result;
     }
 
@@ -229,7 +229,7 @@ public class ComponentStandardService extends BaseService {
     // ══════════════════════════════════════════════════════════
 
     public boolean checkDuplicate(Map<String, Object> params) {
-        return sqlSession.selectOne(NS + "checkDuplicate", params) != null;
+        return sqlSession.selectOne(NS + "check_duplicate", params) != null;
     }
 
     // ══ private helpers ═══════════════════════════════════════
diff --git a/backend-spring/src/main/java/com/erp/service/DashboardService.java b/backend-spring/src/main/java/com/erp/service/DashboardService.java
index 5e90842a..38cd4d86 100644
--- a/backend-spring/src/main/java/com/erp/service/DashboardService.java
+++ b/backend-spring/src/main/java/com/erp/service/DashboardService.java
@@ -19,7 +19,7 @@ public class DashboardService extends BaseService {
 
     // ── 목록 조회 ────────────────────────────────────────────────────────────────
     public Map<String, Object> getDashboardList(Map<String, Object> params) {
-        String companyCode = (String) params.getOrDefault("companyCode", "*");
+        String companyCode = (String) params.getOrDefault("company_code", "*");
         String search = (String) params.get("search");
         String category = (String) params.get("category");
         int page = toInt(params.get("page"), 1);
@@ -73,7 +73,7 @@ public class DashboardService extends BaseService {
         pagination.put("page", page);
         pagination.put("limit", limit);
         pagination.put("total", total);
-        pagination.put("totalPages", (int) Math.ceil((double) total / limit));
+        pagination.put("total_pages", (int) Math.ceil((double) total / limit));
         result.put("pagination", pagination);
         return result;
     }
@@ -107,7 +107,7 @@ public class DashboardService extends BaseService {
         String dashboardId = UUID.randomUUID().toString();
         String title = String.valueOf(params.get("title"));
         String description = (String) params.get("description");
-        boolean isPublic = Boolean.TRUE.equals(params.get("isPublic")) || "true".equals(String.valueOf(params.get("isPublic")));
+        boolean isPublic = Boolean.TRUE.equals(params.get("is_public")) || "true".equals(String.valueOf(params.get("is_public")));
         String tagsJson = toJson(params.getOrDefault("tags", new ArrayList<>()));
         String category = (String) params.get("category");
         String settingsJson = toJson(params.getOrDefault("settings", new HashMap<>()));
@@ -129,9 +129,9 @@ public class DashboardService extends BaseService {
 
         if (params.containsKey("title")) { sets.add("title = ?"); args.add(params.get("title")); }
         if (params.containsKey("description")) { sets.add("description = ?"); args.add(params.get("description")); }
-        if (params.containsKey("isPublic")) {
+        if (params.containsKey("is_public")) {
             sets.add("is_public = ?");
-            args.add(Boolean.TRUE.equals(params.get("isPublic")) || "true".equals(String.valueOf(params.get("isPublic"))));
+            args.add(Boolean.TRUE.equals(params.get("is_public")) || "true".equals(String.valueOf(params.get("is_public"))));
         }
         if (params.containsKey("tags")) { sets.add("tags = ?::jsonb"); args.add(toJson(params.get("tags"))); }
         if (params.containsKey("category")) { sets.add("category = ?"); args.add(params.get("category")); }
@@ -180,7 +180,7 @@ public class DashboardService extends BaseService {
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("columns", columns);
         result.put("rows", rows);
-        result.put("rowCount", rows.size());
+        result.put("row_count", rows.size());
         return result;
     }
 
@@ -197,7 +197,7 @@ public class DashboardService extends BaseService {
         String command = trimmed.toUpperCase().split("\\s+")[0];
         int rowCount = jdbcTemplate.update(trimmed);
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("rowCount", rowCount);
+        result.put("row_count", rowCount);
         result.put("command", command);
         return result;
     }
@@ -228,14 +228,14 @@ public class DashboardService extends BaseService {
             Map<String, Object> c = new LinkedHashMap<>();
             c.put("name", col.get("column_name"));
             c.put("type", col.get("data_type"));
-            c.put("udtName", col.get("udt_name"));
+            c.put("udt_name", col.get("udt_name"));
             columns.add(c);
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("tableName", tableName);
+        result.put("table_name", tableName);
         result.put("columns", columns);
-        result.put("dateColumns", dateColumns);
+        result.put("date_columns", dateColumns);
         return result;
     }
 
@@ -260,14 +260,14 @@ public class DashboardService extends BaseService {
                 el.get("type"), el.get("subtype"),
                 toInt(position.get("x"), 0), toInt(position.get("y"), 0),
                 toInt(size.get("width"), 4), toInt(size.get("height"), 3),
-                el.get("title"), el.get("customTitle"),
-                !Boolean.FALSE.equals(el.get("showHeader")),
+                el.get("title"), el.get("custom_title"),
+                !Boolean.FALSE.equals(el.get("show_header")),
                 el.get("content"),
-                toJson(el.getOrDefault("dataSource", new HashMap<>())),
-                toJson(el.getOrDefault("chartConfig", new HashMap<>())),
-                el.get("listConfig") != null ? toJson(el.get("listConfig")) : null,
-                el.get("yardConfig") != null ? toJson(el.get("yardConfig")) : null,
-                el.get("customMetricConfig") != null ? toJson(el.get("customMetricConfig")) : null,
+                toJson(el.getOrDefault("data_source", new HashMap<>())),
+                toJson(el.getOrDefault("chart_config", new HashMap<>())),
+                el.get("list_config") != null ? toJson(el.get("list_config")) : null,
+                el.get("yard_config") != null ? toJson(el.get("yard_config")) : null,
+                el.get("custom_metric_config") != null ? toJson(el.get("custom_metric_config")) : null,
                 i);
         }
     }
@@ -277,17 +277,17 @@ public class DashboardService extends BaseService {
         d.put("id", row.get("id"));
         d.put("title", row.get("title"));
         d.put("description", row.get("description"));
-        d.put("thumbnailUrl", row.get("thumbnail_url"));
-        d.put("isPublic", row.get("is_public"));
-        d.put("createdBy", row.get("created_by"));
-        d.put("createdByName", row.get("created_by_name") != null ? row.get("created_by_name") : row.get("created_by"));
-        d.put("createdAt", row.get("created_at"));
-        d.put("updatedAt", row.get("updated_at"));
+        d.put("thumbnail_url", row.get("thumbnail_url"));
+        d.put("is_public", row.get("is_public"));
+        d.put("created_by", row.get("created_by"));
+        d.put("created_by_name", row.get("created_by_name") != null ? row.get("created_by_name") : row.get("created_by"));
+        d.put("created_at", row.get("created_at"));
+        d.put("updated_at", row.get("updated_at"));
         d.put("tags", parseJson(row.get("tags"), new ArrayList<>()));
         d.put("category", row.get("category"));
-        d.put("viewCount", toInt(row.get("view_count"), 0));
-        d.put("companyCode", row.get("company_code"));
-        if (row.containsKey("elements_count")) d.put("elementsCount", toInt(row.get("elements_count"), 0));
+        d.put("view_count", toInt(row.get("view_count"), 0));
+        d.put("company_code", row.get("company_code"));
+        if (row.containsKey("elements_count")) d.put("elements_count", toInt(row.get("elements_count"), 0));
         if (includeSettings) d.put("settings", parseJson(row.get("settings"), null));
         return d;
     }
@@ -306,14 +306,14 @@ public class DashboardService extends BaseService {
         size.put("height", row.get("height"));
         el.put("size", size);
         el.put("title", row.get("title"));
-        el.put("customTitle", row.get("custom_title"));
-        el.put("showHeader", !Boolean.FALSE.equals(row.get("show_header")));
+        el.put("custom_title", row.get("custom_title"));
+        el.put("show_header", !Boolean.FALSE.equals(row.get("show_header")));
         el.put("content", row.get("content"));
-        el.put("dataSource", parseJson(row.get("data_source_config"), new HashMap<>()));
-        el.put("chartConfig", parseJson(row.get("chart_config"), new HashMap<>()));
-        if (row.get("list_config") != null) el.put("listConfig", parseJson(row.get("list_config"), null));
-        if (row.get("yard_config") != null) el.put("yardConfig", parseJson(row.get("yard_config"), null));
-        if (row.get("custom_metric_config") != null) el.put("customMetricConfig", parseJson(row.get("custom_metric_config"), null));
+        el.put("data_source", parseJson(row.get("data_source_config"), new HashMap<>()));
+        el.put("chart_config", parseJson(row.get("chart_config"), new HashMap<>()));
+        if (row.get("list_config") != null) el.put("list_config", parseJson(row.get("list_config"), null));
+        if (row.get("yard_config") != null) el.put("yard_config", parseJson(row.get("yard_config"), null));
+        if (row.get("custom_metric_config") != null) el.put("custom_metric_config", parseJson(row.get("custom_metric_config"), null));
         return el;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/DataAdvancedService.java b/backend-spring/src/main/java/com/erp/service/DataAdvancedService.java
index 83c22077..c26fbb08 100644
--- a/backend-spring/src/main/java/com/erp/service/DataAdvancedService.java
+++ b/backend-spring/src/main/java/com/erp/service/DataAdvancedService.java
@@ -46,7 +46,7 @@ public class DataAdvancedService extends BaseService {
 
     @SuppressWarnings("unchecked")
     public Map<String, Object> autoDetectMultiTable(Map<String, Object> params) {
-        String rootTable = (String) params.get("rootTable");
+        String rootTable = (String) params.get("root_table");
         if (rootTable == null || !IDENTIFIER.matcher(rootTable).matches()) {
             throw new IllegalArgumentException("유효한 rootTable 파라미터가 필요합니다.");
         }
@@ -57,7 +57,7 @@ public class DataAdvancedService extends BaseService {
             throw new IllegalArgumentException("테이블이 존재하지 않습니다: " + rootTable);
         }
 
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         List<Map<String, Object>> levels = new ArrayList<>();
         buildLevelChain(rootTable, companyCode, levels, 0, 3);
 
@@ -72,7 +72,7 @@ public class DataAdvancedService extends BaseService {
             mode.put("id", "level_" + depth);
             mode.put("label", levelNames + " 업로드");
             mode.put("description", levelNames + " 데이터를 일괄 업로드합니다.");
-            mode.put("activeLevels", activeLevels);
+            mode.put("active_levels", activeLevels);
             uploadModes.add(mode);
         }
 
@@ -81,14 +81,14 @@ public class DataAdvancedService extends BaseService {
         config.put("name", rootTable + " 체인 업로드");
         config.put("description", "자동 감지된 테이블 체인");
         config.put("levels", levels);
-        config.put("uploadModes", uploadModes);
+        config.put("upload_modes", uploadModes);
         return config;
     }
 
     private void buildLevelChain(String tableName, String companyCode,
                                   List<Map<String, Object>> levels, int depth, int maxDepth) {
         if (depth >= maxDepth) return;
-        boolean alreadyAdded = levels.stream().anyMatch(l -> tableName.equals(l.get("tableName")));
+        boolean alreadyAdded = levels.stream().anyMatch(l -> tableName.equals(l.get("table_name")));
         if (alreadyAdded) return;
 
         List<Map<String, Object>> dbCols = jdbcTemplate.queryForList(
@@ -100,8 +100,8 @@ public class DataAdvancedService extends BaseService {
                 .filter(c -> !SYSTEM_COLUMNS.contains(c.get("column_name")))
                 .map(c -> {
                     Map<String, Object> col = new LinkedHashMap<>();
-                    col.put("dbColumn", c.get("column_name"));
-                    col.put("excelHeader", c.get("column_name"));
+                    col.put("db_column", c.get("column_name"));
+                    col.put("excel_header", c.get("column_name"));
                     col.put("required", false);
                     return col;
                 })
@@ -110,21 +110,21 @@ public class DataAdvancedService extends BaseService {
         String parentFkColumn = null;
         String parentRefColumn = null;
         if (depth > 0 && !levels.isEmpty()) {
-            String parentTable = (String) levels.get(levels.size() - 1).get("tableName");
+            String parentTable = (String) levels.get(levels.size() - 1).get("table_name");
             Map<String, String> fkInfo = findFkColumn(tableName, parentTable);
             if (fkInfo != null) {
-                parentFkColumn = fkInfo.get("fkColumn");
-                parentRefColumn = fkInfo.get("refColumn");
+                parentFkColumn = fkInfo.get("fk_column");
+                parentRefColumn = fkInfo.get("ref_column");
             }
         }
 
         Map<String, Object> level = new LinkedHashMap<>();
-        level.put("tableName", tableName);
+        level.put("table_name", tableName);
         level.put("label", tableName);
-        level.put("parentFkColumn", parentFkColumn);
-        level.put("parentRefColumn", parentRefColumn);
-        level.put("upsertMode", "upsert");
-        level.put("upsertKeyColumns", Collections.emptyList());
+        level.put("parent_fk_column", parentFkColumn);
+        level.put("parent_ref_column", parentRefColumn);
+        level.put("upsert_mode", "upsert");
+        level.put("upsert_key_columns", Collections.emptyList());
         level.put("columns", columns);
         levels.add(level);
 
@@ -158,8 +158,8 @@ public class DataAdvancedService extends BaseService {
                 parentTable, childTable);
         if (result.isEmpty()) return null;
         Map<String, String> fk = new HashMap<>();
-        fk.put("fkColumn", (String) result.get(0).get("fk_col"));
-        fk.put("refColumn", (String) result.get(0).get("ref_col"));
+        fk.put("fk_column", (String) result.get(0).get("fk_col"));
+        fk.put("ref_column", (String) result.get(0).get("ref_col"));
         return fk;
     }
 
@@ -167,7 +167,7 @@ public class DataAdvancedService extends BaseService {
 
     @SuppressWarnings("unchecked")
     public Map<String, Object> getMasterDetailRelation(Map<String, Object> params) {
-        String screenIdStr = String.valueOf(params.get("screenId"));
+        String screenIdStr = String.valueOf(params.get("screen_id"));
         int screenId;
         try {
             screenId = Integer.parseInt(screenIdStr);
@@ -192,11 +192,11 @@ public class DataAdvancedService extends BaseService {
         try {
             String configJson = (String) layoutRows.get(0).get("config");
             Map<String, Object> config = objectMapper.readValue(configJson, Map.class);
-            Map<String, Object> leftPanel = (Map<String, Object>) config.get("leftPanel");
-            Map<String, Object> rightPanel = (Map<String, Object>) config.get("rightPanel");
+            Map<String, Object> leftPanel = (Map<String, Object>) config.get("left_panel");
+            Map<String, Object> rightPanel = (Map<String, Object>) config.get("right_panel");
 
-            String masterTable = leftPanel != null ? (String) leftPanel.get("tableName") : null;
-            String detailTable = rightPanel != null ? (String) rightPanel.get("tableName") : null;
+            String masterTable = leftPanel != null ? (String) leftPanel.get("table_name") : null;
+            String detailTable = rightPanel != null ? (String) rightPanel.get("table_name") : null;
 
             if (masterTable == null || detailTable == null) {
                 Map<String, Object> result = new LinkedHashMap<>();
@@ -213,11 +213,11 @@ public class DataAdvancedService extends BaseService {
                 List<?> keys = (List<?>) relationCfg.get("keys");
                 if (keys != null && !keys.isEmpty()) {
                     Map<String, Object> firstKey = (Map<String, Object>) keys.get(0);
-                    masterKeyColumn = (String) firstKey.get("leftColumn");
-                    detailFkColumn = (String) firstKey.get("rightColumn");
+                    masterKeyColumn = (String) firstKey.get("left_column");
+                    detailFkColumn = (String) firstKey.get("right_column");
                 } else {
-                    masterKeyColumn = (String) relationCfg.get("leftColumn");
-                    detailFkColumn = (String) relationCfg.get("foreignKey");
+                    masterKeyColumn = (String) relationCfg.get("left_column");
+                    detailFkColumn = (String) relationCfg.get("foreign_key");
                 }
             }
 
@@ -251,8 +251,8 @@ public class DataAdvancedService extends BaseService {
                 Map<String, Object> ci = new LinkedHashMap<>();
                 ci.put("name", colName);
                 ci.put("label", masterLabels.getOrDefault(colName, colName));
-                ci.put("inputType", "text");
-                ci.put("isFromMaster", true);
+                ci.put("input_type", "text");
+                ci.put("is_from_master", true);
                 masterColumns.add(ci);
             }
 
@@ -266,18 +266,18 @@ public class DataAdvancedService extends BaseService {
                 Map<String, Object> ci = new LinkedHashMap<>();
                 ci.put("name", colName);
                 ci.put("label", detailLabels.getOrDefault(colName, colName));
-                ci.put("inputType", "text");
-                ci.put("isFromMaster", false);
+                ci.put("input_type", "text");
+                ci.put("is_from_master", false);
                 detailColumns.add(ci);
             }
 
             Map<String, Object> result = new LinkedHashMap<>();
-            result.put("masterTable", masterTable);
-            result.put("detailTable", detailTable);
-            result.put("masterKeyColumn", masterKeyColumn);
-            result.put("detailFkColumn", detailFkColumn);
-            result.put("masterColumns", masterColumns);
-            result.put("detailColumns", detailColumns);
+            result.put("master_table", masterTable);
+            result.put("detail_table", detailTable);
+            result.put("master_key_column", masterKeyColumn);
+            result.put("detail_fk_column", detailFkColumn);
+            result.put("master_columns", masterColumns);
+            result.put("detail_columns", detailColumns);
             return result;
 
         } catch (Exception e) {
@@ -308,18 +308,18 @@ public class DataAdvancedService extends BaseService {
     @SuppressWarnings("unchecked")
     public Map<String, Object> downloadMasterDetail(Map<String, Object> params) {
         Map<String, Object> relation = getMasterDetailRelation(params);
-        if (relation.get("masterTable") == null) {
+        if (relation.get("master_table") == null) {
             throw new IllegalArgumentException(
                     (String) relation.getOrDefault("message", "마스터-디테일 구조가 아닙니다."));
         }
 
-        String masterTable = (String) relation.get("masterTable");
-        String detailTable = (String) relation.get("detailTable");
-        String masterKeyColumn = (String) relation.get("masterKeyColumn");
-        String detailFkColumn = (String) relation.get("detailFkColumn");
-        List<Map<String, Object>> masterColumns = (List<Map<String, Object>>) relation.get("masterColumns");
-        List<Map<String, Object>> detailColumns = (List<Map<String, Object>>) relation.get("detailColumns");
-        String companyCode = (String) params.get("companyCode");
+        String masterTable = (String) relation.get("master_table");
+        String detailTable = (String) relation.get("detail_table");
+        String masterKeyColumn = (String) relation.get("master_key_column");
+        String detailFkColumn = (String) relation.get("detail_fk_column");
+        List<Map<String, Object>> masterColumns = (List<Map<String, Object>>) relation.get("master_columns");
+        List<Map<String, Object>> detailColumns = (List<Map<String, Object>>) relation.get("detail_columns");
+        String companyCode = (String) params.get("company_code");
         Map<String, Object> filters = params.get("filters") instanceof Map
                 ? (Map<String, Object>) params.get("filters") : null;
 
@@ -384,9 +384,9 @@ public class DataAdvancedService extends BaseService {
         result.put("headers", headers);
         result.put("columns", columns);
         result.put("data", data);
-        result.put("masterColumns", masterColNames);
-        result.put("detailColumns", detailColNames);
-        result.put("joinKey", masterKeyColumn);
+        result.put("master_columns", masterColNames);
+        result.put("detail_columns", detailColNames);
+        result.put("join_key", masterKeyColumn);
         return result;
     }
 
@@ -396,18 +396,18 @@ public class DataAdvancedService extends BaseService {
     @SuppressWarnings("unchecked")
     public Map<String, Object> uploadMasterDetail(Map<String, Object> params) {
         Map<String, Object> relation = getMasterDetailRelation(params);
-        if (relation.get("masterTable") == null) {
+        if (relation.get("master_table") == null) {
             throw new IllegalArgumentException(
                     (String) relation.getOrDefault("message", "마스터-디테일 구조가 아닙니다."));
         }
 
-        String masterTable = (String) relation.get("masterTable");
-        String detailTable = (String) relation.get("detailTable");
-        String masterKeyColumn = (String) relation.get("masterKeyColumn");
-        String detailFkColumn = (String) relation.get("detailFkColumn");
-        List<Map<String, Object>> masterCols = (List<Map<String, Object>>) relation.get("masterColumns");
-        String companyCode = (String) params.get("companyCode");
-        String userId = (String) params.get("userId");
+        String masterTable = (String) relation.get("master_table");
+        String detailTable = (String) relation.get("detail_table");
+        String masterKeyColumn = (String) relation.get("master_key_column");
+        String detailFkColumn = (String) relation.get("detail_fk_column");
+        List<Map<String, Object>> masterCols = (List<Map<String, Object>>) relation.get("master_columns");
+        String companyCode = (String) params.get("company_code");
+        String userId = (String) params.get("user_id");
         List<?> data = (List<?>) params.get("data");
         if (data == null) throw new IllegalArgumentException("data 배열이 필요합니다.");
 
@@ -466,11 +466,11 @@ public class DataAdvancedService extends BaseService {
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("masterInserted", masterInserted);
-        result.put("masterUpdated", masterUpdated);
-        result.put("detailInserted", detailInserted);
-        result.put("detailUpdated", 0);
-        result.put("detailDeleted", 0);
+        result.put("master_inserted", masterInserted);
+        result.put("master_updated", masterUpdated);
+        result.put("detail_inserted", detailInserted);
+        result.put("detail_updated", 0);
+        result.put("detail_deleted", 0);
         result.put("errors", errors);
         result.put("success", errors.isEmpty());
         return result;
@@ -482,21 +482,21 @@ public class DataAdvancedService extends BaseService {
     @SuppressWarnings("unchecked")
     public Map<String, Object> uploadMasterDetailSimple(Map<String, Object> params) {
         Map<String, Object> relation = getMasterDetailRelation(params);
-        if (relation.get("masterTable") == null) {
+        if (relation.get("master_table") == null) {
             throw new IllegalArgumentException(
                     (String) relation.getOrDefault("message", "마스터-디테일 구조가 아닙니다."));
         }
 
-        String masterTable = (String) relation.get("masterTable");
-        String detailTable = (String) relation.get("detailTable");
-        String masterKeyColumn = (String) relation.get("masterKeyColumn");
-        String detailFkColumn = (String) relation.get("detailFkColumn");
-        String companyCode = (String) params.get("companyCode");
-        String userId = (String) params.get("userId");
-        List<?> detailData = (List<?>) params.get("detailData");
-        Map<String, Object> masterFieldValues = params.get("masterFieldValues") instanceof Map
-                ? (Map<String, Object>) params.get("masterFieldValues") : new HashMap<>();
-        Object numberingRuleId = params.get("numberingRuleId");
+        String masterTable = (String) relation.get("master_table");
+        String detailTable = (String) relation.get("detail_table");
+        String masterKeyColumn = (String) relation.get("master_key_column");
+        String detailFkColumn = (String) relation.get("detail_fk_column");
+        String companyCode = (String) params.get("company_code");
+        String userId = (String) params.get("user_id");
+        List<?> detailData = (List<?>) params.get("detail_data");
+        Map<String, Object> masterFieldValues = params.get("master_field_values") instanceof Map
+                ? (Map<String, Object>) params.get("master_field_values") : new HashMap<>();
+        Object numberingRuleId = params.get("numbering_rule_id");
         if (detailData == null) throw new IllegalArgumentException("detailData 배열이 필요합니다.");
 
         Set<String> masterValidCols = getValidColumns(masterTable);
@@ -538,9 +538,9 @@ public class DataAdvancedService extends BaseService {
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("masterInserted", 1);
-        result.put("detailInserted", detailInserted);
-        result.put("generatedKey", generatedKey);
+        result.put("master_inserted", 1);
+        result.put("detail_inserted", detailInserted);
+        result.put("generated_key", generatedKey);
         result.put("errors", errors);
         result.put("success", errors.isEmpty());
         return result;
@@ -553,10 +553,10 @@ public class DataAdvancedService extends BaseService {
     public Map<String, Object> uploadMultiTable(Map<String, Object> params) {
         Map<String, Object> config = params.get("config") instanceof Map
                 ? (Map<String, Object>) params.get("config") : null;
-        String modeId = (String) params.get("modeId");
+        String modeId = (String) params.get("mode_id");
         List<?> rows = (List<?>) params.get("rows");
-        String companyCode = (String) params.get("companyCode");
-        String userId = (String) params.get("userId");
+        String companyCode = (String) params.get("company_code");
+        String userId = (String) params.get("user_id");
 
         if (config == null || modeId == null || rows == null) {
             throw new IllegalArgumentException("config, modeId, rows 배열이 필요합니다.");
@@ -564,8 +564,8 @@ public class DataAdvancedService extends BaseService {
 
         List<?> allLevels = config.get("levels") instanceof List
                 ? (List<?>) config.get("levels") : Collections.emptyList();
-        List<?> uploadModes = config.get("uploadModes") instanceof List
-                ? (List<?>) config.get("uploadModes") : Collections.emptyList();
+        List<?> uploadModes = config.get("upload_modes") instanceof List
+                ? (List<?>) config.get("upload_modes") : Collections.emptyList();
 
         Map<String, Object> mode = null;
         for (Object m : uploadModes) {
@@ -576,7 +576,7 @@ public class DataAdvancedService extends BaseService {
         }
         if (mode == null) throw new IllegalArgumentException("업로드 모드를 찾을 수 없습니다: " + modeId);
 
-        List<?> activeLevelIndices = (List<?>) mode.get("activeLevels");
+        List<?> activeLevelIndices = (List<?>) mode.get("active_levels");
         if (activeLevelIndices == null || activeLevelIndices.isEmpty()) {
             throw new IllegalArgumentException("활성화된 테이블 레벨이 없습니다.");
         }
@@ -590,7 +590,7 @@ public class DataAdvancedService extends BaseService {
         List<Map<String, Object>> results = new ArrayList<>();
         for (Map<String, Object> lv : activeLevels) {
             Map<String, Object> lr = new LinkedHashMap<>();
-            lr.put("tableName", lv.get("tableName"));
+            lr.put("table_name", lv.get("table_name"));
             lr.put("inserted", 0);
             lr.put("updated", 0);
             results.add(lr);
@@ -598,7 +598,7 @@ public class DataAdvancedService extends BaseService {
 
         Map<String, Set<String>> colsCache = new LinkedHashMap<>();
         for (Map<String, Object> lv : activeLevels) {
-            String tbl = (String) lv.get("tableName");
+            String tbl = (String) lv.get("table_name");
             colsCache.put(tbl, getValidColumns(tbl));
         }
 
@@ -617,7 +617,7 @@ public class DataAdvancedService extends BaseService {
 
                 for (int lvlIdx = 0; lvlIdx < activeLevels.size(); lvlIdx++) {
                     Map<String, Object> lv = activeLevels.get(lvlIdx);
-                    String tableName = (String) lv.get("tableName");
+                    String tableName = (String) lv.get("table_name");
                     Set<String> existingCols = colsCache.get(tableName);
                     Map<String, Object> levelResult = results.get(lvlIdx);
 
@@ -626,21 +626,21 @@ public class DataAdvancedService extends BaseService {
                     if (colDefs != null) {
                         for (Object colObj : colDefs) {
                             Map<String, Object> colDef = (Map<String, Object>) colObj;
-                            String excelHeader = (String) colDef.get("excelHeader");
-                            String dbCol = (String) colDef.get("dbColumn");
+                            String excelHeader = (String) colDef.get("excel_header");
+                            String dbCol = (String) colDef.get("db_column");
                             Object val = row.get(excelHeader);
                             if (val != null && !val.toString().isEmpty()) {
                                 levelData.put(dbCol, val);
-                            } else if (colDef.get("defaultValue") != null) {
-                                levelData.put(dbCol, colDef.get("defaultValue"));
+                            } else if (colDef.get("default_value") != null) {
+                                levelData.put(dbCol, colDef.get("default_value"));
                             }
                         }
                     }
 
                     if (levelData.isEmpty() && lvlIdx > 0) break;
 
-                    String parentFkColumn = (String) lv.get("parentFkColumn");
-                    String parentRefColumn = (String) lv.get("parentRefColumn");
+                    String parentFkColumn = (String) lv.get("parent_fk_column");
+                    String parentRefColumn = (String) lv.get("parent_ref_column");
                     if (lvlIdx > 0 && parentFkColumn != null && parentId != null) {
                         if (parentRefColumn != null && !"id".equals(parentRefColumn)
                                 && parentLevelData.containsKey(parentRefColumn)) {
@@ -657,8 +657,8 @@ public class DataAdvancedService extends BaseService {
                         levelData.put("writer", userId);
                     }
 
-                    String upsertMode = (String) lv.get("upsertMode");
-                    List<?> upsertKeyCols = (List<?>) lv.get("upsertKeyColumns");
+                    String upsertMode = (String) lv.get("upsert_mode");
+                    List<?> upsertKeyCols = (List<?>) lv.get("upsert_key_columns");
                     String upsertKey = null;
                     if (upsertKeyCols != null && !upsertKeyCols.isEmpty()) {
                         upsertKey = upsertKeyCols.stream()
@@ -696,7 +696,7 @@ public class DataAdvancedService extends BaseService {
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("success", success);
         result.put("results", results);
-        result.put("totalRows", rows.size());
+        result.put("total_rows", rows.size());
         result.put("errors", errors);
         return result;
     }
@@ -755,7 +755,7 @@ public class DataAdvancedService extends BaseService {
     private Object upsertRowForChain(String tableName, Map<String, Object> level,
                                       Map<String, Object> data, Set<String> existingCols,
                                       String companyCode, Map<String, Object> levelResult) {
-        List<?> upsertKeyCols = (List<?>) level.get("upsertKeyColumns");
+        List<?> upsertKeyCols = (List<?>) level.get("upsert_key_columns");
         if (upsertKeyCols == null || upsertKeyCols.isEmpty()) {
             Object id = insertRow(tableName, data, existingCols);
             levelResult.put("inserted", ((Number) levelResult.get("inserted")).intValue() + 1);
diff --git a/backend-spring/src/main/java/com/erp/service/DataService.java b/backend-spring/src/main/java/com/erp/service/DataService.java
index 39031c6d..a9279e62 100644
--- a/backend-spring/src/main/java/com/erp/service/DataService.java
+++ b/backend-spring/src/main/java/com/erp/service/DataService.java
@@ -86,13 +86,13 @@ public class DataService extends BaseService {
     // ── 목록 조회 ─────────────────────────────────────────────────────────────
     @SuppressWarnings("unchecked")
     public Map<String, Object> getTableData(Map<String, Object> params) {
-        String tableName = (String) params.get("tableName");
+        String tableName = (String) params.get("table_name");
         validateTable(tableName);
         if (!tableExists(tableName)) {
             throw new IllegalArgumentException("테이블을 찾을 수 없습니다: " + tableName);
         }
 
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         boolean hasCC = hasCompanyCodeColumn(tableName);
 
         int page = toInt(params.get("page"), 1);
@@ -133,7 +133,7 @@ public class DataService extends BaseService {
 
         // search 파라미터
         String search = (String) params.get("search");
-        String searchColumn = (String) params.get("searchColumn");
+        String searchColumn = (String) params.get("search_column");
         if (search != null && !search.isBlank() && searchColumn != null && !searchColumn.isBlank()) {
             validateColumn(searchColumn);
             Set<String> validCols = getValidColumns(tableName);
@@ -144,8 +144,8 @@ public class DataService extends BaseService {
         }
 
         // ORDER BY
-        String orderBy = (String) params.get("orderBy");
-        String orderDir = "DESC".equalsIgnoreCase((String) params.get("orderDir")) ? "DESC" : "ASC";
+        String orderBy = (String) params.get("order_by");
+        String orderDir = "DESC".equalsIgnoreCase((String) params.get("order_dir")) ? "DESC" : "ASC";
         String orderClause = "";
         if (orderBy != null && !orderBy.isBlank() && IDENTIFIER.matcher(orderBy).matches()) {
             orderClause = " ORDER BY \"" + orderBy + "\" " + orderDir;
@@ -175,7 +175,7 @@ public class DataService extends BaseService {
         result.put("total", total);
         result.put("page", page);
         result.put("limit", limit);
-        result.put("totalPages", (int) Math.ceil((double) total / limit));
+        result.put("total_pages", (int) Math.ceil((double) total / limit));
         return result;
     }
 
@@ -199,29 +199,29 @@ public class DataService extends BaseService {
         return cols.stream().map(col -> {
             Map<String, Object> c = new LinkedHashMap<>();
             String colName = String.valueOf(col.get("column_name"));
-            c.put("columnName", colName);
-            c.put("dataType", col.get("data_type"));
-            c.put("udtName", col.get("udt_name"));
+            c.put("column_name", colName);
+            c.put("data_type", col.get("data_type"));
+            c.put("udt_name", col.get("udt_name"));
             c.put("nullable", "YES".equals(col.get("is_nullable")));
-            c.put("defaultValue", col.get("column_default"));
-            c.put("isPk", pkList.contains(colName));
-            c.put("columnLabel", colName);
+            c.put("default_value", col.get("column_default"));
+            c.put("is_pk", pkList.contains(colName));
+            c.put("column_label", colName);
             return c;
         }).collect(Collectors.toList());
     }
 
     // ── 단건 조회 ─────────────────────────────────────────────────────────────
     public Map<String, Object> getRecordDetail(Map<String, Object> params) {
-        String tableName = (String) params.get("tableName");
+        String tableName = (String) params.get("table_name");
         String id = String.valueOf(params.get("id"));
         validateTable(tableName);
 
         List<String> pks = getPrimaryKeys(tableName);
-        String pkOverride = (String) params.get("primaryKeyColumn");
+        String pkOverride = (String) params.get("primary_key_column");
         String pkCol = pkOverride != null && !pkOverride.isBlank() ? pkOverride
                 : (pks.isEmpty() ? "id" : pks.get(0));
 
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         boolean hasCC = hasCompanyCodeColumn(tableName);
 
         List<Object> args = new ArrayList<>();
@@ -242,12 +242,12 @@ public class DataService extends BaseService {
     @Transactional
     @SuppressWarnings("unchecked")
     public Map<String, Object> createRecord(Map<String, Object> params) {
-        String tableName = (String) params.get("tableName");
+        String tableName = (String) params.get("table_name");
         validateTable(tableName);
 
         Set<String> validCols = getValidColumns(tableName);
         boolean hasCC = hasCompanyCodeColumn(tableName);
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
 
         // data 키가 있으면 그 안을 사용, 없으면 params 전체에서 메타 키 제거
         Map<String, Object> data;
@@ -255,8 +255,8 @@ public class DataService extends BaseService {
             data = (Map<String, Object>) params.get("data");
         } else {
             data = new LinkedHashMap<>(params);
-            data.remove("tableName");
-            data.remove("companyCode");
+            data.remove("table_name");
+            data.remove("company_code");
         }
 
         if (hasCC && companyCode != null && !companyCode.isEmpty() && !"*".equals(companyCode)) {
@@ -286,7 +286,7 @@ public class DataService extends BaseService {
     @Transactional
     @SuppressWarnings("unchecked")
     public Map<String, Object> updateRecord(Map<String, Object> params) {
-        String tableName = (String) params.get("tableName");
+        String tableName = (String) params.get("table_name");
         String id = String.valueOf(params.get("id"));
         validateTable(tableName);
 
@@ -294,7 +294,7 @@ public class DataService extends BaseService {
         List<String> pks = getPrimaryKeys(tableName);
         String pkCol = pks.isEmpty() ? "id" : pks.get(0);
 
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         boolean hasCC = hasCompanyCodeColumn(tableName);
 
         Map<String, Object> data;
@@ -302,8 +302,8 @@ public class DataService extends BaseService {
             data = (Map<String, Object>) params.get("data");
         } else {
             data = new LinkedHashMap<>(params);
-            data.remove("tableName");
-            data.remove("companyCode");
+            data.remove("table_name");
+            data.remove("company_code");
             data.remove("id");
         }
 
@@ -337,10 +337,10 @@ public class DataService extends BaseService {
         Object relInfoRaw = params.get("_relationInfo");
         if (relInfoRaw instanceof Map && updated != null) {
             Map<String, Object> relInfo = (Map<String, Object>) relInfoRaw;
-            String relatedTable = (String) relInfo.get("relatedTable");
-            String foreignKey = (String) relInfo.get("foreignKey");
-            Object oldValue = relInfo.get("oldValue");
-            Object newValue = relInfo.get("newValue");
+            String relatedTable = (String) relInfo.get("related_table");
+            String foreignKey = (String) relInfo.get("foreign_key");
+            Object oldValue = relInfo.get("old_value");
+            Object newValue = relInfo.get("new_value");
             if (relatedTable != null && foreignKey != null && oldValue != null && newValue != null) {
                 try {
                     validateTable(relatedTable);
@@ -360,14 +360,14 @@ public class DataService extends BaseService {
     // ── 삭제 ──────────────────────────────────────────────────────────────────
     @Transactional
     public Map<String, Object> deleteRecord(Map<String, Object> params) {
-        String tableName = (String) params.get("tableName");
+        String tableName = (String) params.get("table_name");
         String id = String.valueOf(params.get("id"));
         validateTable(tableName);
 
         List<String> pks = getPrimaryKeys(tableName);
         String pkCol = pks.isEmpty() ? "id" : pks.get(0);
 
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         boolean hasCC = hasCompanyCodeColumn(tableName);
 
         List<Object> args = new ArrayList<>();
@@ -386,20 +386,20 @@ public class DataService extends BaseService {
     // ── JOIN 조회 ─────────────────────────────────────────────────────────────
     @SuppressWarnings("unchecked")
     public List<Map<String, Object>> getJoinData(Map<String, Object> params) {
-        String leftTable = (String) params.get("leftTable");
-        String rightTable = (String) params.get("rightTable");
+        String leftTable = (String) params.get("left_table");
+        String rightTable = (String) params.get("right_table");
         // Node.js는 leftColumn/rightColumn, 내부 호출은 leftKey/rightKey — 둘 다 지원
-        String leftKey = params.get("leftKey") != null
-                ? (String) params.get("leftKey") : (String) params.get("leftColumn");
-        String rightKey = params.get("rightKey") != null
-                ? (String) params.get("rightKey") : (String) params.get("rightColumn");
+        String leftKey = params.get("left_key") != null
+                ? (String) params.get("left_key") : (String) params.get("left_column");
+        String rightKey = params.get("right_key") != null
+                ? (String) params.get("right_key") : (String) params.get("right_column");
 
         validateTable(leftTable);
         validateTable(rightTable);
         validateColumn(leftKey);
         validateColumn(rightKey);
 
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         boolean hasCC = hasCompanyCodeColumn(leftTable);
 
         List<Object> args = new ArrayList<>();
@@ -410,7 +410,7 @@ public class DataService extends BaseService {
             args.add(companyCode);
         }
         // leftValue: Node.js가 특정 값으로 필터링할 때 사용
-        String leftValue = (String) params.get("leftValue");
+        String leftValue = (String) params.get("left_value");
         if (leftValue != null && !leftValue.isBlank()) {
             where.append(" AND l.\"").append(leftKey).append("\" = ?");
             args.add(leftValue);
@@ -441,18 +441,18 @@ public class DataService extends BaseService {
     @Transactional
     @SuppressWarnings("unchecked")
     public Map<String, Object> upsertGroupedRecords(Map<String, Object> params) {
-        String tableName = (String) params.get("tableName");
+        String tableName = (String) params.get("table_name");
         validateTable(tableName);
 
         Set<String> validCols = getValidColumns(tableName);
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         boolean hasCC = hasCompanyCodeColumn(tableName);
 
-        Map<String, Object> parentKeys = params.get("parentKeys") instanceof Map
-                ? (Map<String, Object>) params.get("parentKeys") : new HashMap<>();
+        Map<String, Object> parentKeys = params.get("parent_keys") instanceof Map
+                ? (Map<String, Object>) params.get("parent_keys") : new HashMap<>();
         List<?> records = params.get("records") instanceof List
                 ? (List<?>) params.get("records") : new ArrayList<>();
-        boolean deleteOrphans = Boolean.TRUE.equals(params.get("deleteOrphans"));
+        boolean deleteOrphans = Boolean.TRUE.equals(params.get("delete_orphans"));
 
         List<String> pks = getPrimaryKeys(tableName);
         String pkCol = pks.isEmpty() ? "id" : pks.get(0);
@@ -582,7 +582,7 @@ public class DataService extends BaseService {
         result.put("inserted", inserted);
         result.put("updated", updated);
         result.put("deleted", deleted);
-        result.put("savedIds", savedIds);
+        result.put("saved_ids", savedIds);
         return result;
     }
 
@@ -590,10 +590,10 @@ public class DataService extends BaseService {
     @Transactional
     @SuppressWarnings("unchecked")
     public Map<String, Object> deleteByCompositeKey(Map<String, Object> params) {
-        String tableName = (String) params.get("tableName");
+        String tableName = (String) params.get("table_name");
         validateTable(tableName);
 
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         boolean hasCC = hasCompanyCodeColumn(tableName);
 
         // keys: { colName: value, ... }
@@ -631,10 +631,10 @@ public class DataService extends BaseService {
     @Transactional
     @SuppressWarnings("unchecked")
     public Map<String, Object> deleteGroupRecords(Map<String, Object> params) {
-        String tableName = (String) params.get("tableName");
+        String tableName = (String) params.get("table_name");
         validateTable(tableName);
 
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         boolean hasCC = hasCompanyCodeColumn(tableName);
 
         Map<String, Object> filters = params.get("filters") instanceof Map
@@ -671,9 +671,9 @@ public class DataService extends BaseService {
     @SuppressWarnings("unchecked")
     private List<Map<String, Object>> deduplicateData(List<Map<String, Object>> rows,
                                                        Map<String, Object> config) {
-        String groupByColumn = (String) config.get("groupByColumn");
-        String keepStrategy = config.get("keepStrategy") != null
-                ? (String) config.get("keepStrategy") : "latest";
+        String groupByColumn = (String) config.get("group_by_column");
+        String keepStrategy = config.get("keep_strategy") != null
+                ? (String) config.get("keep_strategy") : "latest";
         if (groupByColumn == null || groupByColumn.isBlank()) return rows;
 
         Map<Object, Map<String, Object>> grouped = new LinkedHashMap<>();
diff --git a/backend-spring/src/main/java/com/erp/service/DataflowDiagramService.java b/backend-spring/src/main/java/com/erp/service/DataflowDiagramService.java
index 6a710590..ec89a055 100644
--- a/backend-spring/src/main/java/com/erp/service/DataflowDiagramService.java
+++ b/backend-spring/src/main/java/com/erp/service/DataflowDiagramService.java
@@ -49,7 +49,7 @@ public class DataflowDiagramService extends BaseService {
         pagination.put("page", page);
         pagination.put("size", size);
         pagination.put("total", total);
-        pagination.put("totalPages", totalPages);
+        pagination.put("total_pages", totalPages);
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("diagrams", diagrams);
@@ -64,7 +64,7 @@ public class DataflowDiagramService extends BaseService {
     public Map<String, Object> getDataflowDiagramById(int diagramId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
         params.put("diagram_id", diagramId);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         Map<String, Object> row = sqlSession.selectOne("dataflowDiagram.selectById", params);
         parseJsonbFields(row);
         return row;
@@ -79,7 +79,7 @@ public class DataflowDiagramService extends BaseService {
                                                       String companyCode,
                                                       String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("created_by", userId);
         params.put("updated_by", userId);
         params.put("diagram_name",    body.get("diagram_name"));
@@ -111,7 +111,7 @@ public class DataflowDiagramService extends BaseService {
 
         Map<String, Object> params = new HashMap<>();
         params.put("diagram_id", diagramId);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("updated_by", userId);
 
         // 단순 텍스트 필드 (null 이면 업데이트 안 함)
@@ -123,10 +123,10 @@ public class DataflowDiagramService extends BaseService {
             params.put("relationships", toJsonString(body.get("relationships")));
         }
         // nullable JSON 필드: containsKey 로 "명시적 전달" 여부 판단
-        setNullableJsonField(params, body, "node_positions",  "updateNodePositions");
-        setNullableJsonField(params, body, "category",        "updateCategory");
-        setNullableJsonField(params, body, "control",         "updateControl");
-        setNullableJsonField(params, body, "plan",            "updatePlan");
+        setNullableJsonField(params, body, "node_positions",  "update_node_positions");
+        setNullableJsonField(params, body, "category",        "update_category");
+        setNullableJsonField(params, body, "control",         "update_control");
+        setNullableJsonField(params, body, "plan",            "update_plan");
 
         sqlSession.update("dataflowDiagram.update", params);
 
@@ -144,7 +144,7 @@ public class DataflowDiagramService extends BaseService {
         }
         Map<String, Object> params = new HashMap<>();
         params.put("diagram_id", diagramId);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         sqlSession.delete("dataflowDiagram.delete", params);
         return true;
     }
@@ -168,7 +168,7 @@ public class DataflowDiagramService extends BaseService {
                 : generateCopyName(original, companyCode);
 
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("created_by",  userId);
         params.put("updated_by",  userId);
         params.put("diagram_name",   copyName);
@@ -204,7 +204,7 @@ public class DataflowDiagramService extends BaseService {
         // baseName 으로 시작하는 이름 목록 조회
         Map<String, Object> queryParams = new HashMap<>();
         queryParams.put("pattern", baseName + "%");
-        queryParams.put("companyCode", companyCode);
+        queryParams.put("company_code", companyCode);
         List<Map<String, Object>> existing = sqlSession.selectList("dataflowDiagram.selectNamesLike", queryParams);
 
         // 가장 큰 (n) 번호 탐색
diff --git a/backend-spring/src/main/java/com/erp/service/DataflowExecutionService.java b/backend-spring/src/main/java/com/erp/service/DataflowExecutionService.java
index b85a54c6..65ff26ca 100644
--- a/backend-spring/src/main/java/com/erp/service/DataflowExecutionService.java
+++ b/backend-spring/src/main/java/com/erp/service/DataflowExecutionService.java
@@ -45,13 +45,13 @@ public class DataflowExecutionService extends BaseService {
      * params: { tableName, data, actionType, connection, companyCode }
      */
     public Map<String, Object> executeDataAction(Map<String, Object> params) {
-        String tableName  = (String) params.get("tableName");
+        String tableName  = (String) params.get("table_name");
         @SuppressWarnings("unchecked")
         Map<String, Object> data       = (Map<String, Object>) params.get("data");
-        String actionType = (String) params.get("actionType");
+        String actionType = (String) params.get("action_type");
         @SuppressWarnings("unchecked")
         Map<String, Object> connection = (Map<String, Object>) params.get("connection");
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
 
         if (tableName == null || tableName.isBlank()) throw new IllegalArgumentException("tableName 은 필수입니다.");
         if (data == null)                               throw new IllegalArgumentException("data 는 필수입니다.");
@@ -213,7 +213,7 @@ public class DataflowExecutionService extends BaseService {
                 "DELETE 액션은 아직 지원되지 않습니다. 조건 설정이 필요합니다.");
 
         // 연결 정보 조회
-        Map<String, Object> connInfo = sqlSession.selectOne("dataflowExecution.selectExternalConnection", Map.of("connectionId", connId));
+        Map<String, Object> connInfo = sqlSession.selectOne("dataflowExecution.selectExternalConnection", Map.of("connection_id", connId));
         if (connInfo == null) throw new IllegalArgumentException("커넥션을 찾을 수 없습니다: " + connId);
 
         String dbType = String.valueOf(connInfo.get("db_type")).toLowerCase(Locale.ROOT);
@@ -276,14 +276,14 @@ public class DataflowExecutionService extends BaseService {
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("success",      true);
         result.put("action",       action);
-        result.put("tableName",    tableName);
+        result.put("table_name",    tableName);
         result.put("data",         rows);
-        result.put("affectedRows", rows.size());
+        result.put("affected_rows", rows.size());
         return result;
     }
 
     private String resolvePrimaryKey(String safeTable) {
-        List<String> pks = sqlSession.selectList("dataflowExecution.selectPrimaryKeys", Map.of("tableName", safeTable));
+        List<String> pks = sqlSession.selectList("dataflowExecution.selectPrimaryKeys", Map.of("table_name", safeTable));
         if (pks == null || pks.isEmpty()) throw new IllegalStateException("테이블 " + safeTable + "의 기본키를 찾을 수 없습니다.");
         return pks.get(0);
     }
diff --git a/backend-spring/src/main/java/com/erp/service/DataflowService.java b/backend-spring/src/main/java/com/erp/service/DataflowService.java
index 7f056205..c623d132 100644
--- a/backend-spring/src/main/java/com/erp/service/DataflowService.java
+++ b/backend-spring/src/main/java/com/erp/service/DataflowService.java
@@ -30,34 +30,34 @@ public class DataflowService extends BaseService {
     public Map<String, Object> insertTableRelationship(Map<String, Object> body,
                                                        String companyCode,
                                                        String userId) {
-        String relationshipName = str(body.get("relationshipName"));
-        String fromTableName    = str(body.get("fromTableName"));
-        String fromColumnName   = str(body.get("fromColumnName"));
-        String toTableName      = str(body.get("toTableName"));
-        String toColumnName     = str(body.get("toColumnName"));
-        String relationshipType = body.getOrDefault("relationshipType", "one-to-one").toString();
-        String connectionType   = body.getOrDefault("connectionType", "simple-key").toString();
+        String relationshipName = str(body.get("relationship_name"));
+        String fromTableName    = str(body.get("from_table_name"));
+        String fromColumnName   = str(body.get("from_column_name"));
+        String toTableName      = str(body.get("to_table_name"));
+        String toColumnName     = str(body.get("to_column_name"));
+        String relationshipType = body.getOrDefault("relationship_type", "one-to-one").toString();
+        String connectionType   = body.getOrDefault("connection_type", "simple-key").toString();
 
         // diagram_id 결정: 전달된 값 or max+1
         int diagramId;
-        Object diagramIdObj = body.get("diagramId");
+        Object diagramIdObj = body.get("diagram_id");
         if (diagramIdObj != null) {
             diagramId = toInt(diagramIdObj);
         } else {
             Map<String, Object> maxParams = new HashMap<>();
-            maxParams.put("companyCode", companyCode);
+            maxParams.put("company_code", companyCode);
             Map<String, Object> maxRow = sqlSession.selectOne("dataflow.getMaxDiagramId", maxParams);
             diagramId = toInt(maxRow != null ? maxRow.get("max_diagram_id") : null) + 1;
         }
 
         // 중복 확인
         Map<String, Object> checkParams = new HashMap<>();
-        checkParams.put("diagramId",       diagramId);
-        checkParams.put("fromTableName",   fromTableName);
-        checkParams.put("fromColumnName",  fromColumnName);
-        checkParams.put("toTableName",     toTableName);
-        checkParams.put("toColumnName",    toColumnName);
-        checkParams.put("companyCode",     companyCode);
+        checkParams.put("diagram_id",       diagramId);
+        checkParams.put("from_table_name",   fromTableName);
+        checkParams.put("from_column_name",  fromColumnName);
+        checkParams.put("to_table_name",     toTableName);
+        checkParams.put("to_column_name",    toColumnName);
+        checkParams.put("company_code",     companyCode);
         if (sqlSession.selectOne("dataflow.getExistingRelationshipInfo", checkParams) != null) {
             throw new IllegalArgumentException(
                 "이미 존재하는 관계입니다: " + fromTableName + "." + fromColumnName
@@ -65,36 +65,36 @@ public class DataflowService extends BaseService {
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("diagramId",        diagramId);
-        params.put("relationshipName", relationshipName);
-        params.put("fromTableName",    fromTableName);
-        params.put("fromColumnName",   fromColumnName);
-        params.put("toTableName",      toTableName);
-        params.put("toColumnName",     toColumnName);
-        params.put("relationshipType", relationshipType);
-        params.put("connectionType",   connectionType);
-        params.put("companyCode",      companyCode);
+        params.put("diagram_id",        diagramId);
+        params.put("relationship_name", relationshipName);
+        params.put("from_table_name",    fromTableName);
+        params.put("from_column_name",   fromColumnName);
+        params.put("to_table_name",      toTableName);
+        params.put("to_column_name",     toColumnName);
+        params.put("relationship_type", relationshipType);
+        params.put("connection_type",   connectionType);
+        params.put("company_code",      companyCode);
         params.put("settings",         toJsonString(body.get("settings")));
-        params.put("createdBy",        userId);
+        params.put("created_by",        userId);
 
         sqlSession.insert("dataflow.insertTableRelationship", params);
 
         Map<String, Object> idParams = new HashMap<>();
-        idParams.put("relationshipId", params.get("relationshipId"));
-        idParams.put("companyCode",    companyCode);
+        idParams.put("relationship_id", params.get("relationship_id"));
+        idParams.put("company_code",    companyCode);
         return sqlSession.selectOne("dataflow.getTableRelationshipInfo", idParams);
     }
 
     public List<Map<String, Object>> getTableRelationshipList(String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return sqlSession.selectList("dataflow.getTableRelationshipList", params);
     }
 
     public Map<String, Object> getTableRelationshipInfo(int relationshipId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("relationshipId", relationshipId);
-        params.put("companyCode",    companyCode);
+        params.put("relationship_id", relationshipId);
+        params.put("company_code",    companyCode);
         return sqlSession.selectOne("dataflow.getTableRelationshipInfo", params);
     }
 
@@ -106,17 +106,17 @@ public class DataflowService extends BaseService {
         if (getTableRelationshipInfo(relationshipId, companyCode) == null) return null;
 
         Map<String, Object> params = new HashMap<>();
-        params.put("relationshipId", relationshipId);
-        params.put("companyCode",    companyCode);
-        params.put("updatedBy",      userId);
+        params.put("relationship_id", relationshipId);
+        params.put("company_code",    companyCode);
+        params.put("updated_by",      userId);
 
-        copyIfPresent(updateData, params, "relationshipName");
-        copyIfPresent(updateData, params, "fromTableName");
-        copyIfPresent(updateData, params, "fromColumnName");
-        copyIfPresent(updateData, params, "toTableName");
-        copyIfPresent(updateData, params, "toColumnName");
-        copyIfPresent(updateData, params, "relationshipType");
-        copyIfPresent(updateData, params, "connectionType");
+        copyIfPresent(updateData, params, "relationship_name");
+        copyIfPresent(updateData, params, "from_table_name");
+        copyIfPresent(updateData, params, "from_column_name");
+        copyIfPresent(updateData, params, "to_table_name");
+        copyIfPresent(updateData, params, "to_column_name");
+        copyIfPresent(updateData, params, "relationship_type");
+        copyIfPresent(updateData, params, "connection_type");
         if (updateData.containsKey("settings")) {
             params.put("settings", toJsonString(updateData.get("settings")));
         }
@@ -130,8 +130,8 @@ public class DataflowService extends BaseService {
         if (getTableRelationshipInfo(relationshipId, companyCode) == null) return false;
 
         Map<String, Object> params = new HashMap<>();
-        params.put("relationshipId", relationshipId);
-        params.put("companyCode",    companyCode);
+        params.put("relationship_id", relationshipId);
+        params.put("company_code",    companyCode);
         sqlSession.update("dataflow.softDeleteTableRelationship", params);
         return true;
     }
@@ -145,37 +145,37 @@ public class DataflowService extends BaseService {
                                               String companyCode,
                                               String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("relationshipId", toInt(body.get("relationshipId")));
-        params.put("fromTableName",  body.get("fromTableName"));
-        params.put("fromColumnName", body.get("fromColumnName"));
-        params.put("toTableName",    body.get("toTableName"));
-        params.put("toColumnName",   body.get("toColumnName"));
-        params.put("connectionType", body.get("connectionType"));
-        params.put("companyCode",    companyCode);
-        params.put("bridgeData",     toJsonString(body.get("bridgeData")));
-        params.put("createdBy",      userId);
+        params.put("relationship_id", toInt(body.get("relationship_id")));
+        params.put("from_table_name",  body.get("from_table_name"));
+        params.put("from_column_name", body.get("from_column_name"));
+        params.put("to_table_name",    body.get("to_table_name"));
+        params.put("to_column_name",   body.get("to_column_name"));
+        params.put("connection_type", body.get("connection_type"));
+        params.put("company_code",    companyCode);
+        params.put("bridge_data",     toJsonString(body.get("bridge_data")));
+        params.put("created_by",      userId);
 
         sqlSession.insert("dataflow.insertDataLink", params);
 
         // useGeneratedKeys 로 bridgeId 자동 채워짐
         Map<String, Object> result = new LinkedHashMap<>(params);
-        result.put("bridge_id", params.get("bridgeId"));
+        result.put("bridge_id", params.get("bridge_id"));
         return result;
     }
 
     public List<Map<String, Object>> getDataLinkList(int relationshipId,
                                                      String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("relationshipId", relationshipId);
-        params.put("companyCode",    companyCode);
+        params.put("relationship_id", relationshipId);
+        params.put("company_code",    companyCode);
         return sqlSession.selectList("dataflow.getDataLinkList", params);
     }
 
     @Transactional
     public void deleteDataLink(int bridgeId, String companyCode, String deletedBy) {
         Map<String, Object> params = new HashMap<>();
-        params.put("bridgeId",    bridgeId);
-        params.put("companyCode", companyCode);
+        params.put("bridge_id",    bridgeId);
+        params.put("company_code", companyCode);
         sqlSession.update("dataflow.softDeleteDataLink", params);
     }
 
@@ -198,20 +198,20 @@ public class DataflowService extends BaseService {
 
         // 테이블 존재 확인
         Map<String, Object> checkParams = new HashMap<>();
-        checkParams.put("tableName", tableName.toLowerCase());
+        checkParams.put("table_name", tableName.toLowerCase());
         List<Map<String, Object>> tableInfo = sqlSession.selectList("dataflow.checkTableExists", checkParams);
         if (tableInfo == null || tableInfo.isEmpty()) {
             throw new IllegalArgumentException("테이블 '" + tableName + "'이 존재하지 않습니다.");
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
+        params.put("table_name", tableName);
         params.put("limit",     limit);
         params.put("offset",    (page - 1) * limit);
         if (search != null && !search.isEmpty()
                 && searchColumn != null && !searchColumn.isEmpty()) {
             params.put("search",       search);
-            params.put("searchColumn", searchColumn);
+            params.put("search_column", searchColumn);
         }
 
         Number totalNum = sqlSession.selectOne("dataflow.countTableData", params);
@@ -223,9 +223,9 @@ public class DataflowService extends BaseService {
         pagination.put("page",       page);
         pagination.put("limit",      limit);
         pagination.put("total",      total);
-        pagination.put("totalPages", totalPages);
-        pagination.put("hasNext",    page < totalPages);
-        pagination.put("hasPrev",    page > 1);
+        pagination.put("total_pages", totalPages);
+        pagination.put("has_next",    page < totalPages);
+        pagination.put("has_prev",    page > 1);
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("data",       data);
@@ -241,9 +241,9 @@ public class DataflowService extends BaseService {
                                               int page, int size,
                                               String searchTerm) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         if (searchTerm != null && !searchTerm.isEmpty()) {
-            params.put("searchTerm", searchTerm);
+            params.put("search_term", searchTerm);
         }
 
         List<Map<String, Object>> rows = sqlSession.selectList("dataflow.getRelationshipForDiagramList", params);
@@ -258,15 +258,15 @@ public class DataflowService extends BaseService {
 
             if (!diagramMap.containsKey(diagramId)) {
                 Map<String, Object> d = new LinkedHashMap<>();
-                d.put("diagramId",         diagramId);
-                d.put("diagramName",       rel.get("relationship_name"));
-                d.put("connectionType",    rel.get("connection_type"));
-                d.put("relationshipType",  rel.get("relationship_type"));
-                d.put("relationshipCount", 0);
-                d.put("createdAt",         rel.get("created_date"));
-                d.put("createdBy",         rel.get("created_by"));
-                d.put("updatedAt",         rel.get("updated_date"));
-                d.put("updatedBy",         rel.get("updated_by"));
+                d.put("diagram_id",         diagramId);
+                d.put("diagram_name",       rel.get("relationship_name"));
+                d.put("connection_type",    rel.get("connection_type"));
+                d.put("relationship_type",  rel.get("relationship_type"));
+                d.put("relationship_count", 0);
+                d.put("created_at",         rel.get("created_date"));
+                d.put("created_by",         rel.get("created_by"));
+                d.put("updated_at",         rel.get("updated_date"));
+                d.put("updated_by",         rel.get("updated_by"));
                 diagramMap.put(diagramId, d);
                 tableSetMap.put(diagramId, new LinkedHashSet<>());
             }
@@ -274,7 +274,7 @@ public class DataflowService extends BaseService {
             Map<String, Object> d     = diagramMap.get(diagramId);
             Set<String>         tables = tableSetMap.get(diagramId);
 
-            d.put("relationshipCount", toInt(d.get("relationshipCount")) + 1);
+            d.put("relationship_count", toInt(d.get("relationship_count")) + 1);
             if (rel.get("from_table_name") != null) tables.add(rel.get("from_table_name").toString());
             if (rel.get("to_table_name")   != null) tables.add(rel.get("to_table_name").toString());
         }
@@ -282,7 +282,7 @@ public class DataflowService extends BaseService {
         // tableCount / tables 설정
         diagramMap.forEach((id, d) -> {
             Set<String> tables = tableSetMap.get(id);
-            d.put("tableCount", tables.size());
+            d.put("table_count", tables.size());
             d.put("tables",     new ArrayList<>(tables));
         });
 
@@ -299,31 +299,31 @@ public class DataflowService extends BaseService {
         result.put("total",      total);
         result.put("page",       page);
         result.put("size",       size);
-        result.put("totalPages", (int) Math.ceil((double) total / size));
+        result.put("total_pages", (int) Math.ceil((double) total / size));
         return result;
     }
 
     public List<Map<String, Object>> getDiagramRelationshipList(String companyCode,
                                                                 String diagramName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode",  companyCode);
-        params.put("diagramName",  diagramName);
+        params.put("company_code",  companyCode);
+        params.put("diagram_name",  diagramName);
         return sqlSession.selectList("dataflow.getDiagramRelationshipListByName", params);
     }
 
     public List<Map<String, Object>> getDiagramRelationshipListByDiagramId(String companyCode,
                                                                            int diagramId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("diagramId",   diagramId);
+        params.put("company_code", companyCode);
+        params.put("diagram_id",   diagramId);
         return sqlSession.selectList("dataflow.getDiagramRelationshipListByDiagramId", params);
     }
 
     public List<Map<String, Object>> getDiagramRelationshipListByRelationshipId(String companyCode,
                                                                                 int relationshipId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode",    companyCode);
-        params.put("relationshipId", relationshipId);
+        params.put("company_code",    companyCode);
+        params.put("relationship_id", relationshipId);
         return sqlSession.selectList("dataflow.getDiagramRelationshipListByRelationshipId", params);
     }
 
@@ -331,8 +331,8 @@ public class DataflowService extends BaseService {
     public String copyDiagram(String companyCode, String diagramName) {
         // 원본 조회
         Map<String, Object> queryParams = new HashMap<>();
-        queryParams.put("companyCode", companyCode);
-        queryParams.put("diagramName", diagramName);
+        queryParams.put("company_code", companyCode);
+        queryParams.put("diagram_name", diagramName);
         List<Map<String, Object>> existing = sqlSession.selectList("dataflow.getDiagramRelationshipListByName", queryParams);
 
         if (existing == null || existing.isEmpty()) {
@@ -341,7 +341,7 @@ public class DataflowService extends BaseService {
 
         // 새 diagram_id 생성
         Map<String, Object> maxParams = new HashMap<>();
-        maxParams.put("companyCode", companyCode);
+        maxParams.put("company_code", companyCode);
         Map<String, Object> maxRow    = sqlSession.selectOne("dataflow.getMaxDiagramId", maxParams);
         int newDiagramId = toInt(maxRow != null ? maxRow.get("max_diagram_id") : null) + 1;
 
@@ -353,7 +353,7 @@ public class DataflowService extends BaseService {
         // baseName으로 시작하는 기존 이름 조회
         Map<String, Object> nameCheckParams = new HashMap<>();
         nameCheckParams.put("pattern",     baseName + "%");
-        nameCheckParams.put("companyCode", companyCode);
+        nameCheckParams.put("company_code", companyCode);
         List<Map<String, Object>> existingNames = sqlSession.selectList("dataflow.getDiagramNameExists", nameCheckParams);
 
         // 가장 큰 (n) 번호 탐색
@@ -371,17 +371,17 @@ public class DataflowService extends BaseService {
 
         for (Map<String, Object> rel : existing) {
             Map<String, Object> insertParams = new HashMap<>();
-            insertParams.put("diagramId",        newDiagramId);
-            insertParams.put("relationshipName", newDiagramName);
-            insertParams.put("fromTableName",    rel.get("from_table_name"));
-            insertParams.put("fromColumnName",   rel.get("from_column_name"));
-            insertParams.put("toTableName",      rel.get("to_table_name"));
-            insertParams.put("toColumnName",     rel.get("to_column_name"));
-            insertParams.put("relationshipType", rel.get("relationship_type"));
-            insertParams.put("connectionType",   rel.get("connection_type"));
-            insertParams.put("companyCode",      companyCode);
+            insertParams.put("diagram_id",        newDiagramId);
+            insertParams.put("relationship_name", newDiagramName);
+            insertParams.put("from_table_name",    rel.get("from_table_name"));
+            insertParams.put("from_column_name",   rel.get("from_column_name"));
+            insertParams.put("to_table_name",      rel.get("to_table_name"));
+            insertParams.put("to_column_name",     rel.get("to_column_name"));
+            insertParams.put("relationship_type", rel.get("relationship_type"));
+            insertParams.put("connection_type",   rel.get("connection_type"));
+            insertParams.put("company_code",      companyCode);
             insertParams.put("settings",         toJsonString(rel.get("settings")));
-            insertParams.put("createdBy",        "system");
+            insertParams.put("created_by",        "system");
             sqlSession.insert("dataflow.insertTableRelationship", insertParams);
         }
 
@@ -391,8 +391,8 @@ public class DataflowService extends BaseService {
     @Transactional
     public int deleteDiagram(String companyCode, String diagramName) {
         Map<String, Object> queryParams = new HashMap<>();
-        queryParams.put("companyCode", companyCode);
-        queryParams.put("diagramName", diagramName);
+        queryParams.put("company_code", companyCode);
+        queryParams.put("diagram_name", diagramName);
         List<Map<String, Object>> existing = sqlSession.selectList("dataflow.getDiagramRelationshipListByName", queryParams);
 
         if (existing == null || existing.isEmpty()) return 0;
@@ -400,8 +400,8 @@ public class DataflowService extends BaseService {
         int diagramId = toInt(existing.get(0).get("diagram_id"));
 
         Map<String, Object> deleteParams = new HashMap<>();
-        deleteParams.put("diagramId",   diagramId);
-        deleteParams.put("companyCode", companyCode);
+        deleteParams.put("diagram_id",   diagramId);
+        deleteParams.put("company_code", companyCode);
         sqlSession.update("dataflow.softDeleteDiagramByDiagramId", deleteParams);
 
         return existing.size();
diff --git a/backend-spring/src/main/java/com/erp/service/DbTypeCategoryService.java b/backend-spring/src/main/java/com/erp/service/DbTypeCategoryService.java
index da0cd1cf..a7a8fbe4 100644
--- a/backend-spring/src/main/java/com/erp/service/DbTypeCategoryService.java
+++ b/backend-spring/src/main/java/com/erp/service/DbTypeCategoryService.java
@@ -16,13 +16,13 @@ public class DbTypeCategoryService extends BaseService {
     private static final String NS = "dbTypeCategory.";
 
     public List<Map<String, Object>> getAllCategories() {
-        return sqlSession.selectList(NS + "selectAllCategories");
+        return sqlSession.selectList(NS + "select_all_categories");
     }
 
     public Map<String, Object> getCategoryByTypeCode(String typeCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("typeCode", typeCode);
-        return sqlSession.selectOne(NS + "selectCategoryByTypeCode", params);
+        params.put("type_code", typeCode);
+        return sqlSession.selectOne(NS + "select_category_by_type_code", params);
     }
 
     @Transactional
@@ -30,46 +30,46 @@ public class DbTypeCategoryService extends BaseService {
         String typeCode = (String) params.get("type_code");
 
         Map<String, Object> checkParams = new HashMap<>();
-        checkParams.put("typeCode", typeCode);
-        Integer existing = sqlSession.selectOne(NS + "countByTypeCode", checkParams);
+        checkParams.put("type_code", typeCode);
+        Integer existing = sqlSession.selectOne(NS + "count_by_type_code", checkParams);
         if (existing != null && existing > 0) {
             throw new IllegalArgumentException("이미 존재하는 DB 타입 코드입니다.");
         }
 
-        sqlSession.insert(NS + "insertCategory", params);
-        return sqlSession.selectOne(NS + "selectCategoryByTypeCode", checkParams);
+        sqlSession.insert(NS + "insert_category", params);
+        return sqlSession.selectOne(NS + "select_category_by_type_code", checkParams);
     }
 
     @Transactional
     public Map<String, Object> updateCategory(String typeCode, Map<String, Object> params) {
-        params.put("typeCode", typeCode);
-        sqlSession.update(NS + "updateCategory", params);
+        params.put("type_code", typeCode);
+        sqlSession.update(NS + "update_category", params);
 
         Map<String, Object> checkParams = new HashMap<>();
-        checkParams.put("typeCode", typeCode);
-        return sqlSession.selectOne(NS + "selectCategoryByTypeCode", checkParams);
+        checkParams.put("type_code", typeCode);
+        return sqlSession.selectOne(NS + "select_category_by_type_code", checkParams);
     }
 
     @Transactional
     public void deleteCategory(String typeCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("typeCode", typeCode);
+        params.put("type_code", typeCode);
 
-        Integer connectionCount = sqlSession.selectOne(NS + "countConnectionsByType", params);
+        Integer connectionCount = sqlSession.selectOne(NS + "count_connections_by_type", params);
         if (connectionCount != null && connectionCount > 0) {
             throw new IllegalStateException(
                 "해당 DB 타입을 사용하는 연결이 " + connectionCount + "개 있어 삭제할 수 없습니다.");
         }
 
-        sqlSession.update(NS + "deactivateCategory", params);
+        sqlSession.update(NS + "deactivate_category", params);
     }
 
     public List<Map<String, Object>> getConnectionStatsByType() {
-        return sqlSession.selectList(NS + "selectConnectionStatsByType");
+        return sqlSession.selectList(NS + "select_connection_stats_by_type");
     }
 
     @Transactional
     public void initializeDefaultCategories() {
-        sqlSession.insert(NS + "insertDefaultCategories", null);
+        sqlSession.insert(NS + "insert_default_categories", null);
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/DdlService.java b/backend-spring/src/main/java/com/erp/service/DdlService.java
index 7d096687..7fa3c0ac 100644
--- a/backend-spring/src/main/java/com/erp/service/DdlService.java
+++ b/backend-spring/src/main/java/com/erp/service/DdlService.java
@@ -52,19 +52,19 @@ public class DdlService extends BaseService {
                                            String companyCode, String userId, String description) {
         // 1. 검증
         Map<String, Object> validation = validateTableCreation(tableName, columns);
-        if (!(Boolean) validation.get("isValid")) {
+        if (!(Boolean) validation.get("is_valid")) {
             @SuppressWarnings("unchecked")
             List<String> errors = (List<String>) validation.get("errors");
             String errorMsg = "테이블 생성 검증 실패: " + String.join(", ", errors);
             logDdlOperation(userId, companyCode, "CREATE_TABLE", tableName, "VALIDATION_FAILED", false, errorMsg);
-            return Map.of("success", false, "message", errorMsg, "errorCode", "VALIDATION_FAILED");
+            return Map.of("success", false, "message", errorMsg, "error_code", "VALIDATION_FAILED");
         }
 
         // 2. 테이블 존재 여부 확인
         if (tableExists(tableName)) {
             String errorMsg = "테이블 '" + tableName + "'이 이미 존재합니다.";
             logDdlOperation(userId, companyCode, "CREATE_TABLE", tableName, "TABLE_EXISTS", false, errorMsg);
-            return Map.of("success", false, "message", errorMsg, "errorCode", "TABLE_EXISTS");
+            return Map.of("success", false, "message", errorMsg, "error_code", "TABLE_EXISTS");
         }
 
         // 3. DDL 쿼리 생성
@@ -90,16 +90,16 @@ public class DdlService extends BaseService {
             return Map.of(
                 "success", true,
                 "message", "테이블 '" + tableName + "'이 성공적으로 생성되었습니다.",
-                "tableName", tableName,
-                "columnCount", columns.size(),
-                "executedQuery", ddlQuery
+                "table_name", tableName,
+                "column_count", columns.size(),
+                "executed_query", ddlQuery
             );
         } catch (Exception e) {
             String errorMsg = "테이블 생성 실패: " + e.getMessage();
             logDdlOperation(userId, companyCode, "CREATE_TABLE", tableName,
                 "FAILED: " + e.getMessage(), false, errorMsg);
             log.error("테이블 생성 실패: {}, 사용자: {}, 오류: {}", tableName, userId, e.getMessage(), e);
-            return Map.of("success", false, "message", errorMsg, "errorCode", "EXECUTION_FAILED");
+            return Map.of("success", false, "message", errorMsg, "error_code", "EXECUTION_FAILED");
         }
     }
 
@@ -114,14 +114,14 @@ public class DdlService extends BaseService {
         if (!errors.isEmpty()) {
             String errorMsg = "컬럼 추가 검증 실패: " + String.join(", ", errors);
             logDdlOperation(userId, companyCode, "ADD_COLUMN", tableName, "VALIDATION_FAILED", false, errorMsg);
-            return Map.of("success", false, "message", errorMsg, "errorCode", "VALIDATION_FAILED");
+            return Map.of("success", false, "message", errorMsg, "error_code", "VALIDATION_FAILED");
         }
 
         // 2. 테이블 존재 여부 확인
         if (!tableExists(tableName)) {
             String errorMsg = "테이블 '" + tableName + "'이 존재하지 않습니다.";
             logDdlOperation(userId, companyCode, "ADD_COLUMN", tableName, "TABLE_NOT_EXISTS", false, errorMsg);
-            return Map.of("success", false, "message", errorMsg, "errorCode", "TABLE_NOT_EXISTS");
+            return Map.of("success", false, "message", errorMsg, "error_code", "TABLE_NOT_EXISTS");
         }
 
         // 3. 컬럼 존재 여부 확인
@@ -129,7 +129,7 @@ public class DdlService extends BaseService {
         if (columnExists(tableName, colName)) {
             String errorMsg = "컬럼 '" + colName + "'이 이미 존재합니다.";
             logDdlOperation(userId, companyCode, "ADD_COLUMN", tableName, "COLUMN_EXISTS", false, errorMsg);
-            return Map.of("success", false, "message", errorMsg, "errorCode", "COLUMN_EXISTS");
+            return Map.of("success", false, "message", errorMsg, "error_code", "COLUMN_EXISTS");
         }
 
         // 4. DDL 쿼리 생성
@@ -140,8 +140,8 @@ public class DdlService extends BaseService {
             transactionTemplate.execute(status -> {
                 jdbcTemplate.execute(ddlQuery);
                 String inputType = convertToInputType(column);
-                String detailSettings = column.containsKey("detailSettings")
-                    ? column.get("detailSettings").toString() : "{}";
+                String detailSettings = column.containsKey("detail_settings")
+                    ? column.get("detail_settings").toString() : "{}";
                 Integer maxOrder = jdbcTemplate.queryForObject(
                     "SELECT COALESCE(MAX(display_order), 0) FROM table_type_columns " +
                     "WHERE table_name = ? AND company_code = ?",
@@ -158,16 +158,16 @@ public class DdlService extends BaseService {
             return Map.of(
                 "success", true,
                 "message", "컬럼 '" + colName + "'이 성공적으로 추가되었습니다.",
-                "tableName", tableName,
-                "columnName", colName,
-                "executedQuery", ddlQuery
+                "table_name", tableName,
+                "column_name", colName,
+                "executed_query", ddlQuery
             );
         } catch (Exception e) {
             String errorMsg = "컬럼 추가 실패: " + e.getMessage();
             logDdlOperation(userId, companyCode, "ADD_COLUMN", tableName,
                 "FAILED: " + e.getMessage(), false, errorMsg);
             log.error("컬럼 추가 실패: {}.{}, 사용자: {}, 오류: {}", tableName, colName, userId, e.getMessage(), e);
-            return Map.of("success", false, "message", errorMsg, "errorCode", "EXECUTION_FAILED");
+            return Map.of("success", false, "message", errorMsg, "error_code", "EXECUTION_FAILED");
         }
     }
 
@@ -181,14 +181,14 @@ public class DdlService extends BaseService {
             String errorMsg = "'" + tableName + "'은 시스템 테이블이므로 삭제할 수 없습니다.";
             logDdlOperation(userId, companyCode, "DROP_TABLE", tableName,
                 "SYSTEM_TABLE_PROTECTED", false, errorMsg);
-            return Map.of("success", false, "message", errorMsg, "errorCode", "SYSTEM_TABLE_PROTECTED");
+            return Map.of("success", false, "message", errorMsg, "error_code", "SYSTEM_TABLE_PROTECTED");
         }
 
         // 2. 테이블 존재 여부 확인
         if (!tableExists(tableName)) {
             String errorMsg = "테이블 '" + tableName + "'이 존재하지 않습니다.";
             logDdlOperation(userId, companyCode, "DROP_TABLE", tableName, "TABLE_NOT_FOUND", false, errorMsg);
-            return Map.of("success", false, "message", errorMsg, "errorCode", "TABLE_NOT_FOUND");
+            return Map.of("success", false, "message", errorMsg, "error_code", "TABLE_NOT_FOUND");
         }
 
         String ddlQuery = "DROP TABLE IF EXISTS \"" + sanitize(tableName) + "\" CASCADE";
@@ -207,15 +207,15 @@ public class DdlService extends BaseService {
             return Map.of(
                 "success", true,
                 "message", "테이블 '" + tableName + "'이 성공적으로 삭제되었습니다.",
-                "tableName", tableName,
-                "executedQuery", ddlQuery
+                "table_name", tableName,
+                "executed_query", ddlQuery
             );
         } catch (Exception e) {
             String errorMsg = "테이블 삭제 실패: " + e.getMessage();
             logDdlOperation(userId, companyCode, "DROP_TABLE", tableName,
                 "FAILED: " + e.getMessage(), false, errorMsg);
             log.error("테이블 삭제 실패: {}, 사용자: {}, 오류: {}", tableName, userId, e.getMessage(), e);
-            return Map.of("success", false, "message", errorMsg, "errorCode", "EXECUTION_FAILED");
+            return Map.of("success", false, "message", errorMsg, "error_code", "EXECUTION_FAILED");
         }
     }
 
@@ -249,7 +249,7 @@ public class DdlService extends BaseService {
 
         int colCount = columns != null ? columns.size() : 0;
         return Map.of(
-            "isValid", errors.isEmpty(),
+            "is_valid", errors.isEmpty(),
             "errors", errors,
             "warnings", warnings,
             "summary", buildValidationSummary(tableName, colCount, errors, warnings)
@@ -263,20 +263,20 @@ public class DdlService extends BaseService {
     public List<Map<String, Object>> getDdlLogs(int limit, String userId, String ddlType) {
         Map<String, Object> params = new HashMap<>();
         params.put("limit", Math.min(limit, 200));
-        params.put("userId", userId);
-        params.put("ddlType", ddlType);
-        return sqlSession.selectList(NS + "selectDdlLogs", params);
+        params.put("user_id", userId);
+        params.put("ddl_type", ddlType);
+        return sqlSession.selectList(NS + "select_ddl_logs", params);
     }
 
     public Map<String, Object> getDdlStatistics(String fromDate, String toDate) {
         Map<String, Object> params = new HashMap<>();
-        params.put("fromDate", fromDate);
-        params.put("toDate", toDate);
+        params.put("from_date", fromDate);
+        params.put("to_date", toDate);
 
-        Map<String, Object> totalStats = sqlSession.selectOne(NS + "selectDdlTotalStats", params);
-        List<Map<String, Object>> byType = sqlSession.selectList(NS + "selectDdlStatsByType", params);
-        List<Map<String, Object>> byUser = sqlSession.selectList(NS + "selectDdlStatsByUser", params);
-        List<Map<String, Object>> recentFailures = sqlSession.selectList(NS + "selectRecentFailures", params);
+        Map<String, Object> totalStats = sqlSession.selectOne(NS + "select_ddl_total_stats", params);
+        List<Map<String, Object>> byType = sqlSession.selectList(NS + "select_ddl_stats_by_type", params);
+        List<Map<String, Object>> byUser = sqlSession.selectList(NS + "select_ddl_stats_by_user", params);
+        List<Map<String, Object>> recentFailures = sqlSession.selectList(NS + "select_recent_failures", params);
 
         Map<String, Long> byDdlType = new LinkedHashMap<>();
         for (Map<String, Object> row : byType) {
@@ -288,35 +288,35 @@ public class DdlService extends BaseService {
         }
 
         return Map.of(
-            "totalExecutions", toLong(totalStats != null ? totalStats.get("total_executions") : null),
-            "successfulExecutions", toLong(totalStats != null ? totalStats.get("successful_executions") : null),
-            "failedExecutions", toLong(totalStats != null ? totalStats.get("failed_executions") : null),
-            "byDDLType", byDdlType,
-            "byUser", byUserMap,
-            "recentFailures", recentFailures
+            "total_executions", toLong(totalStats != null ? totalStats.get("total_executions") : null),
+            "successful_executions", toLong(totalStats != null ? totalStats.get("successful_executions") : null),
+            "failed_executions", toLong(totalStats != null ? totalStats.get("failed_executions") : null),
+            "by_ddl_type", byDdlType,
+            "by_user", byUserMap,
+            "recent_failures", recentFailures
         );
     }
 
     public List<Map<String, Object>> getTableDdlHistory(String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        return sqlSession.selectList(NS + "selectTableDdlHistory", params);
+        params.put("table_name", tableName);
+        return sqlSession.selectList(NS + "select_table_ddl_history", params);
     }
 
     public Map<String, Object> getTableInfo(String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        Map<String, Object> tableInfo = sqlSession.selectOne(NS + "selectTableInfo", params);
+        params.put("table_name", tableName);
+        Map<String, Object> tableInfo = sqlSession.selectOne(NS + "select_table_info", params);
         if (tableInfo == null) return null;
-        List<Map<String, Object>> columns = sqlSession.selectList(NS + "selectTableColumns", params);
-        return Map.of("tableInfo", tableInfo, "columns", columns);
+        List<Map<String, Object>> columns = sqlSession.selectList(NS + "select_table_columns", params);
+        return Map.of("table_info", tableInfo, "columns", columns);
     }
 
     public int cleanupOldLogs(int retentionDays) {
         LocalDateTime cutoff = LocalDateTime.now().minusDays(retentionDays);
         Map<String, Object> params = new HashMap<>();
-        params.put("cutoffDate", cutoff.format(DateTimeFormatter.ISO_LOCAL_DATE_TIME));
-        int deleted = sqlSession.delete(NS + "deleteOldDdlLogs", params);
+        params.put("cutoff_date", cutoff.format(DateTimeFormatter.ISO_LOCAL_DATE_TIME));
+        int deleted = sqlSession.delete(NS + "delete_old_ddl_logs", params);
         log.info("DDL 로그 정리 완료: {}개 삭제, 보존 기간: {}일", deleted, retentionDays);
         return deleted;
     }
@@ -338,8 +338,8 @@ public class DdlService extends BaseService {
             sb.append(",\n  \"").append(sanitize((String) col.get("name"))).append("\" varchar(500)");
             Boolean nullable = col.containsKey("nullable") ? (Boolean) col.get("nullable") : true;
             if (Boolean.FALSE.equals(nullable)) sb.append(" NOT NULL");
-            if (col.get("defaultValue") != null && !col.get("defaultValue").toString().isBlank()) {
-                sb.append(" DEFAULT '").append(col.get("defaultValue").toString().replace("'", "''")).append("'");
+            if (col.get("default_value") != null && !col.get("default_value").toString().isBlank()) {
+                sb.append(" DEFAULT '").append(col.get("default_value").toString().replace("'", "''")).append("'");
             }
         }
         sb.append("\n);");
@@ -352,8 +352,8 @@ public class DdlService extends BaseService {
         sb.append("\"").append(sanitize((String) column.get("name"))).append("\" varchar(500)");
         Boolean nullable = column.containsKey("nullable") ? (Boolean) column.get("nullable") : true;
         if (Boolean.FALSE.equals(nullable)) sb.append(" NOT NULL");
-        if (column.get("defaultValue") != null && !column.get("defaultValue").toString().isBlank()) {
-            sb.append(" DEFAULT '").append(column.get("defaultValue").toString().replace("'", "''")).append("'");
+        if (column.get("default_value") != null && !column.get("default_value").toString().isBlank()) {
+            sb.append(" DEFAULT '").append(column.get("default_value").toString().replace("'", "''")).append("'");
         }
         sb.append(";");
         return sb.toString();
@@ -408,8 +408,8 @@ public class DdlService extends BaseService {
         // 사용자 정의 컬럼
         for (int i = 0; i < columns.size(); i++) {
             Map<String, Object> col = columns.get(i);
-            String detailSettings = col.containsKey("detailSettings")
-                ? col.get("detailSettings").toString() : "{}";
+            String detailSettings = col.containsKey("detail_settings")
+                ? col.get("detail_settings").toString() : "{}";
             saveColumnMeta(tableName, (String) col.get("name"), companyCode,
                 convertToInputType(col), detailSettings, i);
         }
@@ -501,8 +501,8 @@ public class DdlService extends BaseService {
     }
 
     private String convertToInputType(Map<String, Object> col) {
-        Object inputType = col.get("inputType");
-        Object webType   = col.get("webType");
+        Object inputType = col.get("input_type");
+        Object webType   = col.get("web_type");
         String type = inputType != null ? inputType.toString()
                     : (webType != null ? webType.toString() : "text");
         return switch (type) {
@@ -521,14 +521,14 @@ public class DdlService extends BaseService {
                                   String tableName, String ddlQuery, boolean success, String errorMessage) {
         try {
             Map<String, Object> params = new HashMap<>();
-            params.put("userId", userId);
-            params.put("companyCode", companyCode);
-            params.put("ddlType", ddlType);
-            params.put("tableName", tableName);
-            params.put("ddlQuery", ddlQuery);
+            params.put("user_id", userId);
+            params.put("company_code", companyCode);
+            params.put("ddl_type", ddlType);
+            params.put("table_name", tableName);
+            params.put("ddl_query", ddlQuery);
             params.put("success", success);
-            params.put("errorMessage", errorMessage);
-            sqlSession.insert(NS + "insertDdlLog", params);
+            params.put("error_message", errorMessage);
+            sqlSession.insert(NS + "insert_ddl_log", params);
         } catch (Exception e) {
             log.error("DDL 로그 기록 실패: userId={}, ddlType={}, tableName={}", userId, ddlType, tableName, e);
         }
diff --git a/backend-spring/src/main/java/com/erp/service/DeliveryService.java b/backend-spring/src/main/java/com/erp/service/DeliveryService.java
index 789f7f86..213298a2 100644
--- a/backend-spring/src/main/java/com/erp/service/DeliveryService.java
+++ b/backend-spring/src/main/java/com/erp/service/DeliveryService.java
@@ -20,31 +20,31 @@ public class DeliveryService extends BaseService {
 
     public Map<String, Object> getDeliveryStatus(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        List<Map<String, Object>> deliveries = sqlSession.selectList(NS + "getDeliveryList", params);
-        List<Map<String, Object>> issues = sqlSession.selectList(NS + "getCustomerIssueList", params);
-        Map<String, Object> todayStats = sqlSession.selectOne(NS + "getDeliveryTodayStats", params);
+        List<Map<String, Object>> deliveries = sqlSession.selectList(NS + "get_delivery_list", params);
+        List<Map<String, Object>> issues = sqlSession.selectList(NS + "get_customer_issue_list", params);
+        Map<String, Object> todayStats = sqlSession.selectOne(NS + "get_delivery_today_stats", params);
 
         Map<String, Object> result = new HashMap<>();
         result.put("deliveries", deliveries);
         result.put("issues", issues);
-        result.put("todayStats", todayStats);
+        result.put("today_stats", todayStats);
         return result;
     }
 
     public List<Map<String, Object>> getDelayedDeliveries(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getDelayedDeliveryList", params);
+        return sqlSession.selectList(NS + "get_delayed_delivery_list", params);
     }
 
     public List<Map<String, Object>> getCustomerIssues(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getCustomerIssueList", params);
+        return sqlSession.selectList(NS + "get_customer_issue_list", params);
     }
 
     @Transactional
     public void updateDeliveryStatus(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        int rows = sqlSession.update(NS + "updateDeliveryStatus", params);
+        int rows = sqlSession.update(NS + "update_delivery_status", params);
         if (rows == 0) {
             throw new IllegalArgumentException("Delivery not found: " + params.get("id"));
         }
@@ -53,7 +53,7 @@ public class DeliveryService extends BaseService {
     @Transactional
     public void updateIssueStatus(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        int rows = sqlSession.update(NS + "updateCustomerIssueStatus", params);
+        int rows = sqlSession.update(NS + "update_customer_issue_status", params);
         if (rows == 0) {
             throw new IllegalArgumentException("Customer issue not found: " + params.get("id"));
         }
diff --git a/backend-spring/src/main/java/com/erp/service/DepartmentService.java b/backend-spring/src/main/java/com/erp/service/DepartmentService.java
index 25365913..68e130eb 100644
--- a/backend-spring/src/main/java/com/erp/service/DepartmentService.java
+++ b/backend-spring/src/main/java/com/erp/service/DepartmentService.java
@@ -19,16 +19,16 @@ public class DepartmentService extends BaseService {
 
     public List<Map<String, Object>> getDepartments(String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         List<Map<String, Object>> departments = sqlSession.selectList("department.selectDepartments", params);
 
         // member_count를 int로 변환
         for (Map<String, Object> dept : departments) {
             Object cnt = dept.get("member_count");
             if (cnt != null) {
-                dept.put("memberCount", ((Number) cnt).intValue());
+                dept.put("member_count", ((Number) cnt).intValue());
             } else {
-                dept.put("memberCount", 0);
+                dept.put("member_count", 0);
             }
         }
         return departments;
@@ -36,22 +36,22 @@ public class DepartmentService extends BaseService {
 
     public Map<String, Object> getDepartment(String deptCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("deptCode", deptCode);
+        params.put("dept_code", deptCode);
         return sqlSession.selectOne("department.selectDepartmentByCode", params);
     }
 
     @Transactional
     public Map<String, Object> createDepartment(String companyCode, Map<String, Object> body) {
         // 프론트엔드는 snake_case로 전송 (Node.js 호환)
-        String deptName = trimString(bodyParam(body, "dept_name", "deptName"));
+        String deptName = trimString(bodyParam(body, "dept_name", "dept_name"));
         if (deptName == null || deptName.isEmpty()) {
             throw new IllegalArgumentException("부서명을 입력해주세요.");
         }
 
         // 중복 부서명 확인
         Map<String, Object> dupParams = new HashMap<>();
-        dupParams.put("companyCode", companyCode);
-        dupParams.put("deptName", deptName);
+        dupParams.put("company_code", companyCode);
+        dupParams.put("dept_name", deptName);
         Map<String, Object> duplicate = sqlSession.selectOne("department.selectDuplicateDeptName", dupParams);
         if (duplicate != null) {
             throw new DuplicateDeptNameException("\"" + deptName + "\" 부서가 이미 존재합니다.");
@@ -59,7 +59,7 @@ public class DepartmentService extends BaseService {
 
         // 회사명 조회
         Map<String, Object> companyParams = new HashMap<>();
-        companyParams.put("companyCode", companyCode);
+        companyParams.put("company_code", companyCode);
         Map<String, Object> company = sqlSession.selectOne("department.selectCompanyName", companyParams);
         String companyName = (company != null && company.get("company_name") != null)
                 ? (String) company.get("company_name")
@@ -71,34 +71,34 @@ public class DepartmentService extends BaseService {
         String deptCode = "DEPT_" + nextNumber;
 
         // 부서 생성
-        Object parentDeptCode = bodyParam(body, "parent_dept_code", "parentDeptCode");
+        Object parentDeptCode = bodyParam(body, "parent_dept_code", "parent_dept_code");
         Map<String, Object> insertParams = new HashMap<>();
-        insertParams.put("deptCode", deptCode);
-        insertParams.put("deptName", deptName);
-        insertParams.put("companyCode", companyCode);
-        insertParams.put("companyName", companyName);
-        insertParams.put("parentDeptCode", parentDeptCode);
+        insertParams.put("dept_code", deptCode);
+        insertParams.put("dept_name", deptName);
+        insertParams.put("company_code", companyCode);
+        insertParams.put("company_name", companyName);
+        insertParams.put("parent_dept_code", parentDeptCode);
         sqlSession.insert("department.insertDepartment", insertParams);
 
         log.info("부서 생성 성공: deptCode={}, deptName={}", deptCode, deptName);
 
         Map<String, Object> findParams = new HashMap<>();
-        findParams.put("deptCode", deptCode);
+        findParams.put("dept_code", deptCode);
         return sqlSession.selectOne("department.selectDepartmentByCode", findParams);
     }
 
     @Transactional
     public Map<String, Object> updateDepartment(String deptCode, Map<String, Object> body) {
-        String deptName = trimString(bodyParam(body, "dept_name", "deptName"));
+        String deptName = trimString(bodyParam(body, "dept_name", "dept_name"));
         if (deptName == null || deptName.isEmpty()) {
             throw new IllegalArgumentException("부서명을 입력해주세요.");
         }
 
-        Object parentDeptCode = bodyParam(body, "parent_dept_code", "parentDeptCode");
+        Object parentDeptCode = bodyParam(body, "parent_dept_code", "parent_dept_code");
         Map<String, Object> params = new HashMap<>();
-        params.put("deptCode", deptCode);
-        params.put("deptName", deptName);
-        params.put("parentDeptCode", parentDeptCode);
+        params.put("dept_code", deptCode);
+        params.put("dept_name", deptName);
+        params.put("parent_dept_code", parentDeptCode);
 
         int updated = sqlSession.update("department.updateDepartment", params);
         if (updated == 0) {
@@ -107,7 +107,7 @@ public class DepartmentService extends BaseService {
 
         log.info("부서 수정 성공: deptCode={}", deptCode);
         Map<String, Object> findParams = new HashMap<>();
-        findParams.put("deptCode", deptCode);
+        findParams.put("dept_code", deptCode);
         return sqlSession.selectOne("department.selectDepartmentByCode", findParams);
     }
 
@@ -115,7 +115,7 @@ public class DepartmentService extends BaseService {
     public int deleteDepartment(String deptCode) {
         // 하위 부서 확인
         Map<String, Object> childParams = new HashMap<>();
-        childParams.put("deptCode", deptCode);
+        childParams.put("dept_code", deptCode);
         Number childCountNum = sqlSession.selectOne("department.selectChildDeptCount", childParams);
         int childCount = childCountNum != null ? childCountNum.intValue() : 0;
         if (childCount > 0) {
@@ -124,12 +124,12 @@ public class DepartmentService extends BaseService {
 
         // 부서원 삭제
         Map<String, Object> memberParams = new HashMap<>();
-        memberParams.put("deptCode", deptCode);
+        memberParams.put("dept_code", deptCode);
         int memberCount = sqlSession.delete("department.deleteUserDeptByDeptCode", memberParams);
 
         // 부서 삭제
         Map<String, Object> deptParams = new HashMap<>();
-        deptParams.put("deptCode", deptCode);
+        deptParams.put("dept_code", deptCode);
         int deleted = sqlSession.delete("department.deleteDepartment", deptParams);
         if (deleted == 0) {
             return -1; // not found
@@ -145,13 +145,13 @@ public class DepartmentService extends BaseService {
 
     public List<Map<String, Object>> getDeptMembers(String deptCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("deptCode", deptCode);
+        params.put("dept_code", deptCode);
         return sqlSession.selectList("department.selectDeptMembers", params);
     }
 
     public List<Map<String, Object>> searchUsers(String companyCode, String search) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("search", "%" + search + "%");
         return sqlSession.selectList("department.searchUsers", params);
     }
@@ -160,7 +160,7 @@ public class DepartmentService extends BaseService {
     public void addDeptMember(String deptCode, String userId) {
         // 사용자 존재 확인
         Map<String, Object> userParams = new HashMap<>();
-        userParams.put("userId", userId);
+        userParams.put("user_id", userId);
         Map<String, Object> user = sqlSession.selectOne("department.selectUserById", userParams);
         if (user == null) {
             throw new IllegalArgumentException("사용자를 찾을 수 없습니다.");
@@ -168,8 +168,8 @@ public class DepartmentService extends BaseService {
 
         // 이미 부서원인지 확인
         Map<String, Object> existParams = new HashMap<>();
-        existParams.put("userId", userId);
-        existParams.put("deptCode", deptCode);
+        existParams.put("user_id", userId);
+        existParams.put("dept_code", deptCode);
         Map<String, Object> existing = sqlSession.selectOne("department.selectExistingMember", existParams);
         if (existing != null) {
             throw new DuplicateMemberException("이미 해당 부서의 부서원입니다.");
@@ -177,14 +177,14 @@ public class DepartmentService extends BaseService {
 
         // 주 부서가 있는지 확인
         Map<String, Object> primaryParams = new HashMap<>();
-        primaryParams.put("userId", userId);
+        primaryParams.put("user_id", userId);
         Map<String, Object> hasPrimary = sqlSession.selectOne("department.selectUserPrimaryDept", primaryParams);
 
         // 부서원 추가
         Map<String, Object> insertParams = new HashMap<>();
-        insertParams.put("userId", userId);
-        insertParams.put("deptCode", deptCode);
-        insertParams.put("isPrimary", hasPrimary == null);
+        insertParams.put("user_id", userId);
+        insertParams.put("dept_code", deptCode);
+        insertParams.put("is_primary", hasPrimary == null);
         sqlSession.insert("department.insertDeptMember", insertParams);
 
         log.info("부서원 추가 성공: userId={}, deptCode={}", userId, deptCode);
@@ -193,8 +193,8 @@ public class DepartmentService extends BaseService {
     @Transactional
     public boolean removeDeptMember(String deptCode, String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("userId", userId);
-        params.put("deptCode", deptCode);
+        params.put("user_id", userId);
+        params.put("dept_code", deptCode);
         int deleted = sqlSession.delete("department.deleteDeptMember", params);
         if (deleted == 0) {
             return false;
@@ -207,13 +207,13 @@ public class DepartmentService extends BaseService {
     public void setPrimaryDept(String deptCode, String userId) {
         // 다른 부서의 주 부서 해제
         Map<String, Object> clearParams = new HashMap<>();
-        clearParams.put("userId", userId);
+        clearParams.put("user_id", userId);
         sqlSession.update("department.clearUserPrimaryDept", clearParams);
 
         // 해당 부서를 주 부서로 설정
         Map<String, Object> setParams = new HashMap<>();
-        setParams.put("userId", userId);
-        setParams.put("deptCode", deptCode);
+        setParams.put("user_id", userId);
+        setParams.put("dept_code", deptCode);
         sqlSession.update("department.setUserPrimaryDept", setParams);
 
         log.info("주 부서 설정 성공: userId={}, deptCode={}", userId, deptCode);
diff --git a/backend-spring/src/main/java/com/erp/service/DesignService.java b/backend-spring/src/main/java/com/erp/service/DesignService.java
index 2b4f9d4e..ce26c175 100644
--- a/backend-spring/src/main/java/com/erp/service/DesignService.java
+++ b/backend-spring/src/main/java/com/erp/service/DesignService.java
@@ -47,11 +47,11 @@ public class DesignService extends BaseService {
     @Transactional
     public Map<String, Object> createDesignRequest(Map<String, Object> body, String companyCode, String userId) {
         Map<String, Object> params = new HashMap<>(body);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("writer", userId);
-        if (params.get("sourceType") == null && params.get("source_type") != null)
-            params.put("sourceType", params.get("source_type"));
-        if (params.get("sourceType") == null) params.put("sourceType", "dr");
+        if (params.get("source_type") == null && params.get("source_type") != null)
+            params.put("source_type", params.get("source_type"));
+        if (params.get("source_type") == null) params.put("source_type", "dr");
         if (params.get("priority") == null) params.put("priority", "보통");
         if (params.get("status") == null) params.put("status", "신규접수");
         if (params.get("urgency") == null) params.put("urgency", "보통");
@@ -129,7 +129,7 @@ public class DesignService extends BaseService {
     public boolean deleteDesignRequest(String id, String companyCode) {
         Map<String, Object> params = new HashMap<>();
         params.put("id", id);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return sqlSession.delete("design.deleteDesignRequest", params) > 0;
     }
 
@@ -173,7 +173,7 @@ public class DesignService extends BaseService {
     @Transactional
     public Map<String, Object> createProject(Map<String, Object> body, String companyCode, String userId) {
         Map<String, Object> params = new HashMap<>(body);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("writer", userId);
         if (params.get("status") == null) params.put("status", "계획");
         if (params.get("progress") == null) params.put("progress", "0");
@@ -220,7 +220,7 @@ public class DesignService extends BaseService {
     public boolean deleteProject(String id, String companyCode) {
         Map<String, Object> params = new HashMap<>();
         params.put("id", id);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return sqlSession.delete("design.deleteProject", params) > 0;
     }
 
@@ -420,7 +420,7 @@ public class DesignService extends BaseService {
     @Transactional
     public Map<String, Object> createEcn(Map<String, Object> body, String companyCode, String userId) {
         Map<String, Object> params = new HashMap<>(body);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("writer", userId);
         if (params.get("status") == null) params.put("status", "ECN발행");
         sqlSession.insert("design.insertEcn", params);
@@ -490,7 +490,7 @@ public class DesignService extends BaseService {
     public boolean deleteEcn(String id, String companyCode) {
         Map<String, Object> params = new HashMap<>();
         params.put("id", id);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         return sqlSession.delete("design.deleteEcn", params) > 0;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/DigitalTwinService.java b/backend-spring/src/main/java/com/erp/service/DigitalTwinService.java
index 5c48fc45..077784d1 100644
--- a/backend-spring/src/main/java/com/erp/service/DigitalTwinService.java
+++ b/backend-spring/src/main/java/com/erp/service/DigitalTwinService.java
@@ -39,7 +39,7 @@ public class DigitalTwinService extends BaseService {
         if (layout == null) return null;
 
         Map<String, Object> objectParams = new HashMap<>();
-        objectParams.put("layoutId", params.get("id"));
+        objectParams.put("layout_id", params.get("id"));
         List<Map<String, Object>> objects = sqlSession.selectList("digitalTwin.getDigitalTwinObjectListByLayoutId", objectParams);
 
         Map<String, Object> result = new LinkedHashMap<>();
@@ -59,13 +59,13 @@ public class DigitalTwinService extends BaseService {
         List<Map<String, Object>> objects = (List<Map<String, Object>>) params.remove("objects");
 
         // hierarchyConfig: Map → JSON string
-        Object hierarchyConfig = params.get("hierarchyConfig");
+        Object hierarchyConfig = params.get("hierarchy_config");
         if (hierarchyConfig instanceof Map || hierarchyConfig instanceof List) {
             try {
-                params.put("hierarchyConfig", objectMapper.writeValueAsString(hierarchyConfig));
+                params.put("hierarchy_config", objectMapper.writeValueAsString(hierarchyConfig));
             } catch (Exception e) {
                 log.warn("hierarchyConfig 직렬화 실패: {}", e.getMessage());
-                params.put("hierarchyConfig", null);
+                params.put("hierarchy_config", null);
             }
         }
 
@@ -78,7 +78,7 @@ public class DigitalTwinService extends BaseService {
 
         Map<String, Object> infoParams = new HashMap<>();
         infoParams.put("id", layoutId);
-        infoParams.put("companyCode", params.get("companyCode"));
+        infoParams.put("company_code", params.get("company_code"));
         return getDigitalTwinLayoutInfo(infoParams);
     }
 
@@ -93,13 +93,13 @@ public class DigitalTwinService extends BaseService {
         List<Map<String, Object>> objects = (List<Map<String, Object>>) params.remove("objects");
 
         // hierarchyConfig: Map → JSON string
-        Object hierarchyConfig = params.get("hierarchyConfig");
+        Object hierarchyConfig = params.get("hierarchy_config");
         if (hierarchyConfig instanceof Map || hierarchyConfig instanceof List) {
             try {
-                params.put("hierarchyConfig", objectMapper.writeValueAsString(hierarchyConfig));
+                params.put("hierarchy_config", objectMapper.writeValueAsString(hierarchyConfig));
             } catch (Exception e) {
                 log.warn("hierarchyConfig 직렬화 실패: {}", e.getMessage());
-                params.put("hierarchyConfig", null);
+                params.put("hierarchy_config", null);
             }
         }
 
@@ -110,7 +110,7 @@ public class DigitalTwinService extends BaseService {
 
         // 기존 객체 전체 삭제 후 재저장
         Map<String, Object> delParams = new HashMap<>();
-        delParams.put("layoutId", layoutId);
+        delParams.put("layout_id", layoutId);
         sqlSession.delete("digitalTwin.deleteDigitalTwinObjectsByLayoutId", delParams);
 
         if (objects != null && !objects.isEmpty()) {
@@ -119,7 +119,7 @@ public class DigitalTwinService extends BaseService {
 
         Map<String, Object> infoParams = new HashMap<>();
         infoParams.put("id", layoutId);
-        infoParams.put("companyCode", params.get("companyCode"));
+        infoParams.put("company_code", params.get("company_code"));
         return getDigitalTwinLayoutInfo(infoParams);
     }
 
@@ -174,7 +174,7 @@ public class DigitalTwinService extends BaseService {
 
         Map<String, Object> infoParams = new HashMap<>();
         infoParams.put("id", params.get("id"));
-        infoParams.put("companyCode", params.get("companyCode"));
+        infoParams.put("company_code", params.get("company_code"));
         return sqlSession.selectOne("digitalTwin.getDigitalTwinTemplateInfo", infoParams);
     }
 
@@ -183,8 +183,8 @@ public class DigitalTwinService extends BaseService {
     // ──────────────────────────────────────────────────────────────────────────
     @SuppressWarnings("unchecked")
     public Map<String, Object> getHierarchyData(Map<String, Object> body) {
-        long connectionId = toLong(body.get("externalDbConnectionId"));
-        Object rawConfig = body.get("hierarchyConfig");
+        long connectionId = toLong(body.get("external_db_connection_id"));
+        Object rawConfig = body.get("hierarchy_config");
         Map<String, Object> config = toMap(rawConfig);
 
         Map<String, Object> result = new LinkedHashMap<>();
@@ -195,7 +195,7 @@ public class DigitalTwinService extends BaseService {
         // 창고 데이터
         Map<String, Object> whConfig = toMap(config.get("warehouse"));
         if (whConfig != null) {
-            String tableName = str(whConfig, "tableName");
+            String tableName = str(whConfig, "table_name");
             List<Map<String, Object>> rows = queryExternal(connectionId,
                     "SELECT * FROM " + tableName + " LIMIT 100");
             result.put("warehouse", rows);
@@ -208,7 +208,7 @@ public class DigitalTwinService extends BaseService {
             for (Object levelObj : (List<?>) levelsObj) {
                 Map<String, Object> level = toMap(levelObj);
                 if (level == null) continue;
-                String tableName = str(level, "tableName");
+                String tableName = str(level, "table_name");
                 List<Map<String, Object>> rows = queryExternal(connectionId,
                         "SELECT * FROM " + tableName + " LIMIT 1000");
                 Map<String, Object> levelData = new LinkedHashMap<>();
@@ -223,8 +223,8 @@ public class DigitalTwinService extends BaseService {
         // 자재 데이터 (개수)
         Map<String, Object> matConfig = toMap(config.get("material"));
         if (matConfig != null) {
-            String tableName = str(matConfig, "tableName");
-            String locCol = str(matConfig, "locationKeyColumn");
+            String tableName = str(matConfig, "table_name");
+            String locCol = str(matConfig, "location_key_column");
             List<Map<String, Object>> rows = queryExternal(connectionId,
                     "SELECT " + locCol + " AS location_key, COUNT(*) AS count" +
                     " FROM " + tableName +
@@ -240,12 +240,12 @@ public class DigitalTwinService extends BaseService {
     // ──────────────────────────────────────────────────────────────────────────
     @SuppressWarnings("unchecked")
     public List<Map<String, Object>> getChildrenData(Map<String, Object> body) {
-        long connectionId = toLong(body.get("externalDbConnectionId"));
-        Map<String, Object> config = toMap(body.get("hierarchyConfig"));
-        int parentLevel = body.get("parentLevel") instanceof Number
-                ? ((Number) body.get("parentLevel")).intValue()
-                : Integer.parseInt(body.get("parentLevel").toString());
-        String parentKey = body.get("parentKey").toString();
+        long connectionId = toLong(body.get("external_db_connection_id"));
+        Map<String, Object> config = toMap(body.get("hierarchy_config"));
+        int parentLevel = body.get("parent_level") instanceof Number
+                ? ((Number) body.get("parent_level")).intValue()
+                : Integer.parseInt(body.get("parent_level").toString());
+        String parentKey = body.get("parent_key").toString();
 
         Object levelsObj = config.get("levels");
         if (!(levelsObj instanceof List)) return Collections.emptyList();
@@ -264,8 +264,8 @@ public class DigitalTwinService extends BaseService {
         }
         if (nextLevel == null) return Collections.emptyList();
 
-        String tableName = str(nextLevel, "tableName");
-        String parentKeyColumn = str(nextLevel, "parentKeyColumn");
+        String tableName = str(nextLevel, "table_name");
+        String parentKeyColumn = str(nextLevel, "parent_key_column");
         return queryExternal(connectionId,
                 "SELECT * FROM " + tableName +
                 " WHERE " + parentKeyColumn + " = '" + parentKey + "' LIMIT 1000");
@@ -328,9 +328,9 @@ public class DigitalTwinService extends BaseService {
     // ──────────────────────────────────────────────────────────────────────────
     @SuppressWarnings("unchecked")
     public List<Map<String, Object>> getMaterialCounts(Map<String, Object> body) {
-        long connectionId = toLong(body.get("externalDbConnectionId"));
-        String tableName = str(body, "tableName");
-        List<String> locationKeys = (List<String>) body.get("locationKeys");
+        long connectionId = toLong(body.get("external_db_connection_id"));
+        String tableName = str(body, "table_name");
+        List<String> locationKeys = (List<String>) body.get("location_keys");
 
         String keysString = locationKeys.stream()
                 .map(k -> "'" + k + "'")
@@ -362,7 +362,7 @@ public class DigitalTwinService extends BaseService {
 
         // 1단계: parentId 없는 부모 객체 먼저 저장
         for (Map<String, Object> obj : objects) {
-            if (obj.get("parentId") == null) {
+            if (obj.get("parent_id") == null) {
                 Map<String, Object> p = buildObjectParams(layoutId, obj, null);
                 sqlSession.insert("digitalTwin.insertDigitalTwinObject", p);
                 Long dbId = toLong(p.get("id"));
@@ -374,8 +374,8 @@ public class DigitalTwinService extends BaseService {
 
         // 2단계: parentId 있는 자식 객체 저장 (매핑된 실제 ID 사용)
         for (Map<String, Object> obj : objects) {
-            if (obj.get("parentId") != null) {
-                Long realParentId = idMapping.get(obj.get("parentId"));
+            if (obj.get("parent_id") != null) {
+                Long realParentId = idMapping.get(obj.get("parent_id"));
                 Map<String, Object> p = buildObjectParams(layoutId, obj, realParentId);
                 sqlSession.insert("digitalTwin.insertDigitalTwinObject", p);
             }
@@ -385,36 +385,36 @@ public class DigitalTwinService extends BaseService {
     @SuppressWarnings("unchecked")
     private Map<String, Object> buildObjectParams(Long layoutId, Map<String, Object> obj, Long parentDbId) {
         Map<String, Object> p = new HashMap<>();
-        p.put("layoutId", layoutId);
+        p.put("layout_id", layoutId);
         p.put("type", obj.get("type"));
         p.put("name", obj.get("name"));
 
         Map<String, Object> position = toMap(obj.get("position"));
-        p.put("posX", position != null ? position.get("x") : null);
-        p.put("posY", position != null ? position.get("y") : null);
-        p.put("posZ", position != null ? position.get("z") : null);
+        p.put("pos_x", position != null ? position.get("x") : null);
+        p.put("pos_y", position != null ? position.get("y") : null);
+        p.put("pos_z", position != null ? position.get("z") : null);
 
         Map<String, Object> size = toMap(obj.get("size"));
-        p.put("sizeX", size != null ? size.get("x") : null);
-        p.put("sizeY", size != null ? size.get("y") : null);
-        p.put("sizeZ", size != null ? size.get("z") : null);
+        p.put("size_x", size != null ? size.get("x") : null);
+        p.put("size_y", size != null ? size.get("y") : null);
+        p.put("size_z", size != null ? size.get("z") : null);
 
         p.put("rotation", obj.get("rotation"));
         p.put("color", obj.get("color"));
-        p.put("areaKey", obj.get("areaKey"));
-        p.put("locaKey", obj.get("locaKey"));
-        p.put("locType", obj.get("locType"));
-        p.put("materialCount", obj.get("materialCount"));
+        p.put("area_key", obj.get("area_key"));
+        p.put("loca_key", obj.get("loca_key"));
+        p.put("loc_type", obj.get("loc_type"));
+        p.put("material_count", obj.get("material_count"));
 
-        Map<String, Object> materialPreview = toMap(obj.get("materialPreview"));
-        p.put("materialPreviewHeight", materialPreview != null ? materialPreview.get("height") : null);
+        Map<String, Object> materialPreview = toMap(obj.get("material_preview"));
+        p.put("material_preview_height", materialPreview != null ? materialPreview.get("height") : null);
 
-        p.put("parentDbId", parentDbId);
-        p.put("displayOrder", obj.get("displayOrder"));
+        p.put("parent_db_id", parentDbId);
+        p.put("display_order", obj.get("display_order"));
         p.put("locked", obj.get("locked"));
-        p.put("hierarchyLevel", obj.get("hierarchyLevel"));
-        p.put("parentKey", obj.get("parentKey"));
-        p.put("externalKey", obj.get("externalKey"));
+        p.put("hierarchy_level", obj.get("hierarchy_level"));
+        p.put("parent_key", obj.get("parent_key"));
+        p.put("external_key", obj.get("external_key"));
         return p;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/DriverService.java b/backend-spring/src/main/java/com/erp/service/DriverService.java
index 6feaec5b..51f2dd5c 100644
--- a/backend-spring/src/main/java/com/erp/service/DriverService.java
+++ b/backend-spring/src/main/java/com/erp/service/DriverService.java
@@ -30,14 +30,14 @@ public class DriverService extends BaseService {
         Map<String, Object> vehicle = sqlSession.selectOne("driver.getDriverVehicle", params);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("userId", userInfo.get("user_id"));
-        result.put("userName", userInfo.get("user_name"));
-        result.put("phoneNumber", userInfo.get("cell_phone"));
-        result.put("licenseNumber", userInfo.get("license_number"));
-        result.put("vehicleNumber", userInfo.get("vehicle_number"));
-        result.put("vehicleType", vehicle != null ? vehicle.get("vehicle_type") : null);
-        result.put("vehicleStatus", vehicle != null ? vehicle.get("status") : null);
-        result.put("branchName", userInfo.get("branch_name"));
+        result.put("user_id", userInfo.get("user_id"));
+        result.put("user_name", userInfo.get("user_name"));
+        result.put("phone_number", userInfo.get("cell_phone"));
+        result.put("license_number", userInfo.get("license_number"));
+        result.put("vehicle_number", userInfo.get("vehicle_number"));
+        result.put("vehicle_type", vehicle != null ? vehicle.get("vehicle_type") : null);
+        result.put("vehicle_status", vehicle != null ? vehicle.get("status") : null);
+        result.put("branch_name", userInfo.get("branch_name"));
         return result;
     }
 
@@ -69,16 +69,16 @@ public class DriverService extends BaseService {
             throw new IllegalArgumentException("사용자를 찾을 수 없습니다.");
         }
         // user_info에서 이름/전화번호 보완
-        if (params.get("userName") == null) params.put("userName", userInfo.get("user_name"));
-        if (params.get("phoneNumber") == null) params.put("phoneNumber", userInfo.get("cell_phone"));
-        if (params.get("companyCode") == null) params.put("companyCode", userInfo.get("company_code"));
+        if (params.get("user_name") == null) params.put("user_name", userInfo.get("user_name"));
+        if (params.get("phone_number") == null) params.put("phone_number", userInfo.get("cell_phone"));
+        if (params.get("company_code") == null) params.put("company_code", userInfo.get("company_code"));
 
         sqlSession.insert("driver.insertDriverVehicle", params);
 
         // user_info.vehicle_number 업데이트
         Map<String, Object> updateParams = new HashMap<>();
-        updateParams.put("userId", params.get("userId"));
-        updateParams.put("vehicleNumber", params.get("vehicleNumber"));
+        updateParams.put("user_id", params.get("user_id"));
+        updateParams.put("vehicle_number", params.get("vehicle_number"));
         sqlSession.update("driver.updateDriverUserInfo", updateParams);
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/DynamicFormService.java b/backend-spring/src/main/java/com/erp/service/DynamicFormService.java
index 21f12b05..ab4b1de0 100644
--- a/backend-spring/src/main/java/com/erp/service/DynamicFormService.java
+++ b/backend-spring/src/main/java/com/erp/service/DynamicFormService.java
@@ -41,14 +41,14 @@ public class DynamicFormService extends BaseService {
      */
     public String resolveBaseTable(String tableName) {
         try {
-            Map<String, Object> params = Map.of("tableName", tableName);
-            Map<String, Object> tableInfo = sqlSession.selectOne(NS + "selectTableType", params);
+            Map<String, Object> params = Map.of("table_name", tableName);
+            Map<String, Object> tableInfo = sqlSession.selectOne(NS + "select_table_type", params);
 
             if (tableInfo == null || !"VIEW".equals(tableInfo.get("table_type"))) {
                 return tableName;
             }
 
-            Map<String, Object> viewDef = sqlSession.selectOne(NS + "selectViewDefinition", params);
+            Map<String, Object> viewDef = sqlSession.selectOne(NS + "select_view_definition", params);
             if (viewDef != null) {
                 String definition = (String) viewDef.get("view_definition");
                 if (definition != null) {
@@ -70,8 +70,8 @@ public class DynamicFormService extends BaseService {
      * 테이블 컬럼명 목록 조회
      */
     private List<String> getColumnNames(String tableName) {
-        Map<String, Object> params = Map.of("tableName", tableName);
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "selectColumnNames", params);
+        Map<String, Object> params = Map.of("table_name", tableName);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "select_column_names", params);
         return rows.stream()
                 .map(r -> (String) r.get("column_name"))
                 .collect(Collectors.toList());
@@ -81,8 +81,8 @@ public class DynamicFormService extends BaseService {
      * 테이블 컬럼 타입 맵 (column_name → data_type)
      */
     private Map<String, String> getColumnTypeMap(String tableName) {
-        Map<String, Object> params = Map.of("tableName", tableName);
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "selectColumnTypes", params);
+        Map<String, Object> params = Map.of("table_name", tableName);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "select_column_types", params);
         Map<String, String> result = new LinkedHashMap<>();
         for (Map<String, Object> row : rows) {
             result.put((String) row.get("column_name"), (String) row.get("data_type"));
@@ -94,8 +94,8 @@ public class DynamicFormService extends BaseService {
      * 테이블 기본키 목록 조회
      */
     private List<String> getPrimaryKeyList(String tableName) {
-        Map<String, Object> params = Map.of("tableName", tableName);
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "selectPrimaryKeys", params);
+        Map<String, Object> params = Map.of("table_name", tableName);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "select_primary_keys", params);
         return rows.stream()
                 .map(r -> (String) r.get("column_name"))
                 .collect(Collectors.toList());
@@ -242,8 +242,8 @@ public class DynamicFormService extends BaseService {
                 }
                 keysToRemove.add(entry.getKey());
                 Map<String, Object> repeaterMeta = new LinkedHashMap<>();
-                repeaterMeta.put("componentId", entry.getKey());
-                repeaterMeta.put("targetTable", targetTable);
+                repeaterMeta.put("component_id", entry.getKey());
+                repeaterMeta.put("target_table", targetTable);
                 repeaterMeta.put("data", actualItems);
 
                 if (targetTable != null && !targetTable.equals(tableName)) {
@@ -300,7 +300,7 @@ public class DynamicFormService extends BaseService {
 
         // 별도 테이블 Repeater 저장
         for (Map<String, Object> repeater : separateRepeaters) {
-            String targetTable = (String) repeater.get("targetTable");
+            String targetTable = (String) repeater.get("target_table");
             validateName(targetTable);
             List<String> targetCols = getColumnNames(targetTable);
             List<String> targetPks = getPrimaryKeyList(targetTable);
@@ -328,13 +328,13 @@ public class DynamicFormService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("id", insertedRecord.getOrDefault("id", insertedRecord.get("objid")));
-        result.put("screenId", screenId);
-        result.put("tableName", tableName);
+        result.put("screen_id", screenId);
+        result.put("table_name", tableName);
         result.put("data", insertedRecord);
-        result.put("createdAt", insertedRecord.get("created_date"));
-        result.put("updatedAt", insertedRecord.get("updated_date"));
-        result.put("createdBy", insertedRecord.getOrDefault("created_by", createdBy));
-        result.put("updatedBy", insertedRecord.getOrDefault("updated_by", updatedBy));
+        result.put("created_at", insertedRecord.get("created_date"));
+        result.put("updated_at", insertedRecord.get("updated_date"));
+        result.put("created_by", insertedRecord.getOrDefault("created_by", createdBy));
+        result.put("updated_by", insertedRecord.getOrDefault("updated_by", updatedBy));
         return result;
     }
 
@@ -436,13 +436,13 @@ public class DynamicFormService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("id", updated.getOrDefault("id", updated.getOrDefault("objid", id)));
-        result.put("screenId", 0);
-        result.put("tableName", tableName);
+        result.put("screen_id", 0);
+        result.put("table_name", tableName);
         result.put("data", updated);
-        result.put("createdAt", updated.get("created_date"));
-        result.put("updatedAt", updated.get("updated_date"));
-        result.put("createdBy", updated.get("created_by"));
-        result.put("updatedBy", updated.getOrDefault("updated_by", updatedBy));
+        result.put("created_at", updated.get("created_date"));
+        result.put("updated_at", updated.get("updated_date"));
+        result.put("created_by", updated.get("created_by"));
+        result.put("updated_by", updated.getOrDefault("updated_by", updatedBy));
         return result;
     }
 
@@ -533,7 +533,7 @@ public class DynamicFormService extends BaseService {
         String actualTable = resolveBaseTable(tableName);
         validateName(actualTable);
 
-        Map<String, Object> pkInfo = sqlSession.selectOne(NS + "selectPrimaryKeyWithType", Map.of("tableName", actualTable));
+        Map<String, Object> pkInfo = sqlSession.selectOne(NS + "select_primary_key_with_type", Map.of("table_name", actualTable));
         if (pkInfo == null) {
             throw new IllegalStateException("테이블 " + actualTable + "의 기본키를 찾을 수 없습니다.");
         }
@@ -556,7 +556,7 @@ public class DynamicFormService extends BaseService {
 
     public Map<String, Object> getFormData(int id) {
         Map<String, Object> params = Map.of("id", id);
-        Map<String, Object> row = sqlSession.selectOne(NS + "selectFormData", params);
+        Map<String, Object> row = sqlSession.selectOne(NS + "select_form_data", params);
         if (row == null) return null;
 
         // form_data jsonb를 Map으로 파싱
@@ -569,13 +569,13 @@ public class DynamicFormService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("id", row.get("id"));
-        result.put("screenId", row.get("screen_id"));
-        result.put("tableName", row.get("table_name"));
+        result.put("screen_id", row.get("screen_id"));
+        result.put("table_name", row.get("table_name"));
         result.put("data", row.get("form_data"));
-        result.put("createdAt", row.get("created_date"));
-        result.put("updatedAt", row.get("updated_date"));
-        result.put("createdBy", row.get("created_by"));
-        result.put("updatedBy", row.get("updated_by"));
+        result.put("created_at", row.get("created_date"));
+        result.put("updated_at", row.get("updated_date"));
+        result.put("created_by", row.get("created_by"));
+        result.put("updated_by", row.get("updated_by"));
         return result;
     }
 
@@ -585,22 +585,22 @@ public class DynamicFormService extends BaseService {
         int page = ((Number) queryParams.getOrDefault("page", 1)).intValue();
         int size = ((Number) queryParams.getOrDefault("size", 10)).intValue();
         String search = (String) queryParams.get("search");
-        String sortBy = (String) queryParams.getOrDefault("sortBy", "created_date");
-        String sortOrder = (String) queryParams.getOrDefault("sortOrder", "desc");
+        String sortBy = (String) queryParams.getOrDefault("sort_by", "created_date");
+        String sortOrder = (String) queryParams.getOrDefault("sort_order", "desc");
 
         int offset = (page - 1) * size;
         String searchParam = (search != null && !search.isEmpty()) ? "%" + search + "%" : null;
 
         Map<String, Object> params = new LinkedHashMap<>();
-        params.put("screenId", screenId);
+        params.put("screen_id", screenId);
         params.put("search", searchParam);
-        params.put("sortBy", sortBy);
-        params.put("sortOrder", sortOrder);
+        params.put("sort_by", sortBy);
+        params.put("sort_order", sortOrder);
         params.put("size", size);
         params.put("offset", offset);
 
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "selectFormDataList", params);
-        Integer totalObj = sqlSession.selectOne(NS + "countFormDataList", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "select_form_data_list", params);
+        Integer totalObj = sqlSession.selectOne(NS + "count_form_data_list", params);
         int total = totalObj != null ? totalObj : 0;
 
         // form_data 파싱
@@ -613,13 +613,13 @@ public class DynamicFormService extends BaseService {
             }
             Map<String, Object> item = new LinkedHashMap<>();
             item.put("id", row.get("id"));
-            item.put("screenId", row.get("screen_id"));
-            item.put("tableName", row.get("table_name"));
+            item.put("screen_id", row.get("screen_id"));
+            item.put("table_name", row.get("table_name"));
             item.put("data", row.get("form_data"));
-            item.put("createdAt", row.get("created_date"));
-            item.put("updatedAt", row.get("updated_date"));
-            item.put("createdBy", row.get("created_by"));
-            item.put("updatedBy", row.get("updated_by"));
+            item.put("created_at", row.get("created_date"));
+            item.put("updated_at", row.get("updated_date"));
+            item.put("created_by", row.get("created_by"));
+            item.put("updated_by", row.get("updated_by"));
             return item;
         }).collect(Collectors.toList());
 
@@ -627,9 +627,9 @@ public class DynamicFormService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("content", content);
-        result.put("totalElements", total);
-        result.put("totalPages", totalPages);
-        result.put("currentPage", page);
+        result.put("total_elements", total);
+        result.put("total_pages", totalPages);
+        result.put("current_page", page);
         result.put("size", size);
         return result;
     }
@@ -647,14 +647,14 @@ public class DynamicFormService extends BaseService {
     // ── 테이블 컬럼 조회 ──────────────────────────────────────────────────────
 
     public List<Map<String, Object>> getTableColumns(String tableName) {
-        Map<String, Object> params = Map.of("tableName", tableName);
-        List<Map<String, Object>> columns = sqlSession.selectList(NS + "selectTableColumns", params);
-        List<Map<String, Object>> pks = sqlSession.selectList(NS + "selectPrimaryKeys", params);
+        Map<String, Object> params = Map.of("table_name", tableName);
+        List<Map<String, Object>> columns = sqlSession.selectList(NS + "select_table_columns", params);
+        List<Map<String, Object>> pks = sqlSession.selectList(NS + "select_primary_keys", params);
         Set<String> pkSet = pks.stream().map(r -> (String) r.get("column_name")).collect(Collectors.toSet());
 
         return columns.stream().map(col -> {
             Map<String, Object> item = new LinkedHashMap<>(col);
-            item.put("primaryKey", pkSet.contains(col.get("column_name")));
+            item.put("primary_key", pkSet.contains(col.get("column_name")));
             item.put("nullable", "YES".equals(col.get("is_nullable")));
             return item;
         }).collect(Collectors.toList());
@@ -709,7 +709,7 @@ public class DynamicFormService extends BaseService {
         int affected = jdbcTemplate.update(sql, params.toArray());
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("affectedRows", affected);
+        result.put("affected_rows", affected);
         return result;
     }
 
@@ -719,20 +719,20 @@ public class DynamicFormService extends BaseService {
     public Map<String, Object> saveLocationHistory(Map<String, Object> data) {
         Map<String, Object> params = new HashMap<>(data);
         // recordedAt String → Date
-        Object recAt = params.get("recordedAt");
+        Object recAt = params.get("recorded_at");
         if (recAt instanceof String) {
             try {
-                params.put("recordedAt", new java.util.Date(
+                params.put("recorded_at", new java.util.Date(
                         java.time.Instant.parse((String) recAt).toEpochMilli()));
             } catch (Exception e) {
-                params.put("recordedAt", new java.util.Date());
+                params.put("recorded_at", new java.util.Date());
             }
         } else if (recAt == null) {
-            params.put("recordedAt", new java.util.Date());
+            params.put("recorded_at", new java.util.Date());
         }
-        if (!params.containsKey("tripStatus")) params.put("tripStatus", "active");
+        if (!params.containsKey("trip_status")) params.put("trip_status", "active");
 
-        sqlSession.insert(NS + "insertLocationHistory", params);
+        sqlSession.insert(NS + "insert_location_history", params);
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("id", params.get("id"));
@@ -742,9 +742,9 @@ public class DynamicFormService extends BaseService {
     public List<Map<String, Object>> getLocationHistory(Map<String, Object> params) {
         if (!params.containsKey("limit")) params.put("limit", 1000);
         // startDate / endDate String → Date if present
-        convertDateParam(params, "startDate");
-        convertDateParam(params, "endDate");
-        return sqlSession.selectList(NS + "selectLocationHistory", params);
+        convertDateParam(params, "start_date");
+        convertDateParam(params, "end_date");
+        return sqlSession.selectList(NS + "select_location_history", params);
     }
 
     private void convertDateParam(Map<String, Object> params, String key) {
diff --git a/backend-spring/src/main/java/com/erp/service/EntityJoinService.java b/backend-spring/src/main/java/com/erp/service/EntityJoinService.java
index 5c8c7776..fbaaf0ea 100644
--- a/backend-spring/src/main/java/com/erp/service/EntityJoinService.java
+++ b/backend-spring/src/main/java/com/erp/service/EntityJoinService.java
@@ -46,9 +46,9 @@ public class EntityJoinService extends BaseService {
         int offset = (page - 1) * size;
 
         boolean enableEntityJoin = !"false".equalsIgnoreCase(
-                String.valueOf(options.getOrDefault("enableEntityJoin", "true")));
+                String.valueOf(options.getOrDefault("enable_entity_join", "true")));
 
-        String companyCode = (String) options.get("companyCode");
+        String companyCode = (String) options.get("company_code");
 
         List<Map<String, Object>> joinConfigs = enableEntityJoin
                 ? detectEntityJoins(tableName, null, companyCode)
@@ -59,8 +59,8 @@ public class EntityJoinService extends BaseService {
                 ? (Map<String, Object>) options.get("search")
                 : Collections.emptyMap();
 
-        String sortBy = (String) options.get("sortBy");
-        String sortOrder = (String) options.getOrDefault("sortOrder", "asc");
+        String sortBy = (String) options.get("sort_by");
+        String sortOrder = (String) options.getOrDefault("sort_order", "asc");
 
         List<Object> whereParams = new ArrayList<>();
         String whereClause = buildWhereClause(tableName, searchConditions, whereParams);
@@ -83,16 +83,16 @@ public class EntityJoinService extends BaseService {
         result.put("total", total);
         result.put("page", page);
         result.put("size", size);
-        result.put("totalPages", totalPages);
+        result.put("total_pages", totalPages);
 
         if (enableEntityJoin && !joinConfigs.isEmpty()) {
             Map<String, Object> entityJoinInfo = new HashMap<>();
-            entityJoinInfo.put("joinConfigs", joinConfigs);
+            entityJoinInfo.put("join_configs", joinConfigs);
             entityJoinInfo.put("strategy", "full_join");
             Map<String, Object> perf = new HashMap<>();
-            perf.put("queryTime", System.currentTimeMillis() - startTime);
+            perf.put("query_time", System.currentTimeMillis() - startTime);
             entityJoinInfo.put("performance", perf);
-            result.put("entityJoinInfo", entityJoinInfo);
+            result.put("entity_join_info", entityJoinInfo);
         }
 
         return result;
@@ -104,24 +104,24 @@ public class EntityJoinService extends BaseService {
             String companyCode) {
 
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("companyCode", companyCode);
+        params.put("table_name", tableName);
+        params.put("company_code", companyCode);
 
-        List<Map<String, Object>> entityColumns = sqlSession.selectList(NS + "selectEntityColumns", params);
+        List<Map<String, Object>> entityColumns = sqlSession.selectList(NS + "select_entity_columns", params);
         List<Map<String, Object>> joinConfigs = new ArrayList<>();
 
         Map<String, Object> writerCheck = new HashMap<>();
-        writerCheck.put("tableName", tableName);
-        writerCheck.put("columnName", "writer");
-        if (sqlSession.selectOne(NS + "selectColumnExists", writerCheck) != null) {
+        writerCheck.put("table_name", tableName);
+        writerCheck.put("column_name", "writer");
+        if (sqlSession.selectOne(NS + "select_column_exists", writerCheck) != null) {
             Map<String, Object> writerConfig = new LinkedHashMap<>();
-            writerConfig.put("sourceTable", tableName);
-            writerConfig.put("sourceColumn", "writer");
-            writerConfig.put("referenceTable", "user_info");
-            writerConfig.put("referenceColumn", "user_id");
-            writerConfig.put("displayColumn", "user_name");
-            writerConfig.put("displayColumns", List.of("user_name"));
-            writerConfig.put("aliasColumn", "writer_name");
+            writerConfig.put("source_table", tableName);
+            writerConfig.put("source_column", "writer");
+            writerConfig.put("reference_table", "user_info");
+            writerConfig.put("reference_column", "user_id");
+            writerConfig.put("display_column", "user_name");
+            writerConfig.put("display_columns", List.of("user_name"));
+            writerConfig.put("alias_column", "writer_name");
             writerConfig.put("separator", " - ");
             if (validateJoinConfig(writerConfig)) {
                 joinConfigs.add(writerConfig);
@@ -153,13 +153,13 @@ public class EntityJoinService extends BaseService {
             String aliasColumn = columnName + "_" + finalDisplayCol;
 
             Map<String, Object> joinConfig = new LinkedHashMap<>();
-            joinConfig.put("sourceTable", tableName);
-            joinConfig.put("sourceColumn", columnName);
-            joinConfig.put("referenceTable", refTable);
-            joinConfig.put("referenceColumn", refCol);
-            joinConfig.put("displayColumn", finalDisplayCol);
-            joinConfig.put("displayColumns", List.of(finalDisplayCol));
-            joinConfig.put("aliasColumn", aliasColumn);
+            joinConfig.put("source_table", tableName);
+            joinConfig.put("source_column", columnName);
+            joinConfig.put("reference_table", refTable);
+            joinConfig.put("reference_column", refCol);
+            joinConfig.put("display_column", finalDisplayCol);
+            joinConfig.put("display_columns", List.of(finalDisplayCol));
+            joinConfig.put("alias_column", aliasColumn);
             joinConfig.put("separator", " - ");
 
             if (validateJoinConfig(joinConfig)) {
@@ -173,13 +173,13 @@ public class EntityJoinService extends BaseService {
 
     public List<Map<String, Object>> getReferenceTableColumns(String tableName, String companyCode) {
         Map<String, Object> schemaParams = new HashMap<>();
-        schemaParams.put("tableName", tableName);
-        List<Map<String, Object>> schemaCols = sqlSession.selectList(NS + "selectTableSchemaColumns", schemaParams);
+        schemaParams.put("table_name", tableName);
+        List<Map<String, Object>> schemaCols = sqlSession.selectList(NS + "select_table_schema_columns", schemaParams);
 
         Map<String, Object> metaParams = new HashMap<>();
-        metaParams.put("tableName", tableName);
-        metaParams.put("companyCode", companyCode);
-        List<Map<String, Object>> metaCols = sqlSession.selectList(NS + "selectColumnMetadata", metaParams);
+        metaParams.put("table_name", tableName);
+        metaParams.put("company_code", companyCode);
+        List<Map<String, Object>> metaCols = sqlSession.selectList(NS + "select_column_metadata", metaParams);
         Map<String, Map<String, Object>> metaByCol = metaCols.stream()
                 .collect(Collectors.toMap(
                         m -> (String) m.get("column_name"),
@@ -195,10 +195,10 @@ public class EntityJoinService extends BaseService {
             String inputType = (String) meta.get("input_type");
 
             Map<String, Object> item = new LinkedHashMap<>();
-            item.put("columnName", colName);
-            item.put("displayName", label);
-            item.put("dataType", dataType);
-            item.put("inputType", inputType);
+            item.put("column_name", colName);
+            item.put("display_name", label);
+            item.put("data_type", dataType);
+            item.put("input_type", inputType);
             result.add(item);
         }
         return result;
@@ -207,25 +207,25 @@ public class EntityJoinService extends BaseService {
     public void updateColumnEntitySettings(String tableName, String columnName,
                                             Map<String, Object> settings, String companyCode) {
         Map<String, Object> params = new HashMap<>(settings);
-        params.put("tableName", tableName);
-        params.put("columnName", columnName);
-        params.put("companyCode", companyCode);
-        sqlSession.update(NS + "upsertColumnEntitySettings", params);
+        params.put("table_name", tableName);
+        params.put("column_name", columnName);
+        params.put("company_code", companyCode);
+        sqlSession.update(NS + "upsert_column_entity_settings", params);
         log.info("Entity 설정 업데이트: {}.{}", tableName, columnName);
     }
 
     public Map<String, Object> getEntityJoinColumns(String tableName, String companyCode) {
         List<Map<String, Object>> allJoinConfigs = detectEntityJoins(tableName, null, companyCode);
         List<Map<String, Object>> joinConfigs = allJoinConfigs.stream()
-                .filter(c -> !"category_values".equals(c.get("referenceTable")))
+                .filter(c -> !"category_values".equals(c.get("reference_table")))
                 .collect(Collectors.toList());
 
         if (joinConfigs.isEmpty()) {
             Map<String, Object> empty = new LinkedHashMap<>();
-            empty.put("tableName", tableName);
-            empty.put("joinTables", Collections.emptyList());
-            empty.put("availableColumns", Collections.emptyList());
-            empty.put("summary", Map.of("totalJoinTables", 0, "totalAvailableColumns", 0));
+            empty.put("table_name", tableName);
+            empty.put("join_tables", Collections.emptyList());
+            empty.put("available_columns", Collections.emptyList());
+            empty.put("summary", Map.of("total_join_tables", 0, "total_available_columns", 0));
             return empty;
         }
 
@@ -234,54 +234,54 @@ public class EntityJoinService extends BaseService {
         Set<String> generatedAliases = new HashSet<>();
 
         for (Map<String, Object> config : joinConfigs) {
-            String refTable    = (String) config.get("referenceTable");
-            String srcCol      = (String) config.get("sourceColumn");
-            String currentDisp = (String) config.get("displayColumn");
+            String refTable    = (String) config.get("reference_table");
+            String srcCol      = (String) config.get("source_column");
+            String currentDisp = (String) config.get("display_column");
 
             List<Map<String, Object>> availCols = getReferenceTableColumns(refTable, companyCode);
 
             List<Map<String, Object>> colInfoList = availCols.stream()
                     .map(c -> {
                         Map<String, Object> ci = new LinkedHashMap<>();
-                        ci.put("columnName", c.get("columnName"));
-                        ci.put("columnLabel", c.get("displayName"));
-                        ci.put("dataType", c.get("dataType"));
-                        ci.put("inputType", c.get("inputType"));
-                        ci.put("isNullable", true);
+                        ci.put("column_name", c.get("column_name"));
+                        ci.put("column_label", c.get("display_name"));
+                        ci.put("data_type", c.get("data_type"));
+                        ci.put("input_type", c.get("input_type"));
+                        ci.put("is_nullable", true);
                         return ci;
                     }).collect(Collectors.toList());
 
             Map<String, Object> joinTableInfo = new LinkedHashMap<>();
-            joinTableInfo.put("joinConfig", config);
-            joinTableInfo.put("tableName", refTable);
-            joinTableInfo.put("currentDisplayColumn", currentDisp);
-            joinTableInfo.put("availableColumns", colInfoList);
+            joinTableInfo.put("join_config", config);
+            joinTableInfo.put("table_name", refTable);
+            joinTableInfo.put("current_display_column", currentDisp);
+            joinTableInfo.put("available_columns", colInfoList);
             joinTablesInfo.add(joinTableInfo);
 
             for (Map<String, Object> col : colInfoList) {
-                String colName   = (String) col.get("columnName");
+                String colName   = (String) col.get("column_name");
                 String joinAlias = srcCol + "_" + colName;
                 if (!generatedAliases.add(joinAlias)) continue;
 
                 Map<String, Object> avail = new LinkedHashMap<>();
-                avail.put("tableName", refTable);
-                avail.put("columnName", colName);
-                avail.put("columnLabel", col.get("columnLabel"));
-                avail.put("dataType", col.get("dataType"));
-                avail.put("inputType", col.get("inputType"));
-                avail.put("joinAlias", joinAlias);
-                avail.put("suggestedLabel", col.get("columnLabel"));
+                avail.put("table_name", refTable);
+                avail.put("column_name", colName);
+                avail.put("column_label", col.get("column_label"));
+                avail.put("data_type", col.get("data_type"));
+                avail.put("input_type", col.get("input_type"));
+                avail.put("join_alias", joinAlias);
+                avail.put("suggested_label", col.get("column_label"));
                 allAvailableColumns.add(avail);
             }
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("tableName", tableName);
-        result.put("joinTables", joinTablesInfo);
-        result.put("availableColumns", allAvailableColumns);
+        result.put("table_name", tableName);
+        result.put("join_tables", joinTablesInfo);
+        result.put("available_columns", allAvailableColumns);
         result.put("summary", Map.of(
-                "totalJoinTables", joinConfigs.size(),
-                "totalAvailableColumns", allAvailableColumns.size()));
+                "total_join_tables", joinConfigs.size(),
+                "total_available_columns", allAvailableColumns.size()));
         return result;
     }
 
@@ -292,10 +292,10 @@ public class EntityJoinService extends BaseService {
         for (Map.Entry<String, CacheStats> e : cacheStats.entrySet()) {
             CacheStats s = e.getValue();
             Map<String, Object> info = new LinkedHashMap<>();
-            info.put("cacheKey", e.getKey());
+            info.put("cache_key", e.getKey());
             info.put("size", s.dataSize);
-            info.put("hitRate", s.getHitRate());
-            info.put("lastUpdated", s.lastUpdated.toString());
+            info.put("hit_rate", s.getHitRate());
+            info.put("last_updated", s.lastUpdated.toString());
             caches.add(info);
         }
         double overall = cacheStats.values().stream()
@@ -303,12 +303,12 @@ public class EntityJoinService extends BaseService {
         int totalSize = cacheStats.values().stream().mapToInt(s -> s.dataSize).sum();
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("overallHitRate", overall);
+        result.put("overall_hit_rate", overall);
         result.put("caches", caches);
         result.put("summary", Map.of(
-                "totalCaches", caches.size(),
-                "totalSize", totalSize,
-                "averageHitRate", overall));
+                "total_caches", caches.size(),
+                "total_size", totalSize,
+                "average_hit_rate", overall));
         return result;
     }
 
@@ -370,24 +370,24 @@ public class EntityJoinService extends BaseService {
     }
 
     private boolean validateJoinConfig(Map<String, Object> config) {
-        String refTable   = (String) config.get("referenceTable");
-        String refCol     = (String) config.get("referenceColumn");
-        String displayCol = (String) config.get("displayColumn");
+        String refTable   = (String) config.get("reference_table");
+        String refCol     = (String) config.get("reference_column");
+        String displayCol = (String) config.get("display_column");
 
         Map<String, Object> p = new HashMap<>();
-        p.put("tableName", refTable);
-        if (sqlSession.selectOne(NS + "selectTableExists", p) == null) {
+        p.put("table_name", refTable);
+        if (sqlSession.selectOne(NS + "select_table_exists", p) == null) {
             log.warn("참조 테이블 없음: {}", refTable);
             return false;
         }
 
         Map<String, Object> cp = new HashMap<>();
-        cp.put("tableName", refTable);
-        cp.put("columnName", refCol);
-        if (sqlSession.selectOne(NS + "selectColumnExists", cp) == null) {
-            cp.put("columnName", "id");
-            if (sqlSession.selectOne(NS + "selectColumnExists", cp) != null) {
-                config.put("referenceColumn", "id");
+        cp.put("table_name", refTable);
+        cp.put("column_name", refCol);
+        if (sqlSession.selectOne(NS + "select_column_exists", cp) == null) {
+            cp.put("column_name", "id");
+            if (sqlSession.selectOne(NS + "select_column_exists", cp) != null) {
+                config.put("reference_column", "id");
             } else {
                 log.warn("참조 컬럼 없음: {}.{}", refTable, refCol);
                 return false;
@@ -396,9 +396,9 @@ public class EntityJoinService extends BaseService {
 
         if (notBlank(displayCol) && !"none".equals(displayCol)) {
             Map<String, Object> dp = new HashMap<>();
-            dp.put("tableName", refTable);
-            dp.put("columnName", displayCol);
-            if (sqlSession.selectOne(NS + "selectColumnExists", dp) == null) {
+            dp.put("table_name", refTable);
+            dp.put("column_name", displayCol);
+            if (sqlSession.selectOne(NS + "select_column_exists", dp) == null) {
                 log.warn("표시 컬럼 없음: {}.{}", refTable, displayCol);
                 return false;
             }
@@ -408,8 +408,8 @@ public class EntityJoinService extends BaseService {
 
     private String autoDetectDisplayColumn(String refTable, String refCol) {
         Map<String, Object> p = new HashMap<>();
-        p.put("tableName", refTable);
-        List<Map<String, Object>> cols = sqlSession.selectList(NS + "selectTableSchemaColumns", p);
+        p.put("table_name", refTable);
+        List<Map<String, Object>> cols = sqlSession.selectList(NS + "select_table_schema_columns", p);
         List<String> colNames = cols.stream()
                 .map(c -> (String) c.get("column_name"))
                 .collect(Collectors.toList());
@@ -427,8 +427,8 @@ public class EntityJoinService extends BaseService {
         Map<String, String> aliasMap = new LinkedHashMap<>();
         Set<String> used = new HashSet<>();
         for (Map<String, Object> config : joinConfigs) {
-            String refTable = (String) config.get("referenceTable");
-            String srcCol   = (String) config.get("sourceColumn");
+            String refTable = (String) config.get("reference_table");
+            String srcCol   = (String) config.get("source_column");
             String key = refTable + ":" + srcCol;
             if (!aliasMap.containsKey(key)) {
                 String alias = generateAlias(refTable, used);
@@ -455,10 +455,10 @@ public class EntityJoinService extends BaseService {
         Set<String> generatedAliases = new HashSet<>();
 
         for (Map<String, Object> config : joinConfigs) {
-            String refTable   = (String) config.get("referenceTable");
-            String srcCol     = (String) config.get("sourceColumn");
-            String displayCol = (String) config.get("displayColumn");
-            String aliasCol   = (String) config.get("aliasColumn");
+            String refTable   = (String) config.get("reference_table");
+            String srcCol     = (String) config.get("source_column");
+            String displayCol = (String) config.get("display_column");
+            String aliasCol   = (String) config.get("alias_column");
             String tblAlias   = aliasMap.get(refTable + ":" + srcCol);
             if (tblAlias == null || displayCol == null) continue;
 
@@ -477,9 +477,9 @@ public class EntityJoinService extends BaseService {
 
         Set<String> addedJoins = new HashSet<>();
         for (Map<String, Object> config : joinConfigs) {
-            String refTable = (String) config.get("referenceTable");
-            String srcCol   = (String) config.get("sourceColumn");
-            String refCol   = (String) config.get("referenceColumn");
+            String refTable = (String) config.get("reference_table");
+            String srcCol   = (String) config.get("source_column");
+            String refCol   = (String) config.get("reference_column");
             String joinKey  = refTable + ":" + srcCol;
             String tblAlias = aliasMap.get(joinKey);
             if (tblAlias == null || !addedJoins.add(joinKey)) continue;
@@ -518,9 +518,9 @@ public class EntityJoinService extends BaseService {
 
         Set<String> addedJoins = new HashSet<>();
         for (Map<String, Object> config : joinConfigs) {
-            String refTable = (String) config.get("referenceTable");
-            String srcCol   = (String) config.get("sourceColumn");
-            String refCol   = (String) config.get("referenceColumn");
+            String refTable = (String) config.get("reference_table");
+            String srcCol   = (String) config.get("source_column");
+            String refCol   = (String) config.get("reference_column");
             String joinKey  = refTable + ":" + srcCol;
             String tblAlias = aliasMap.get(joinKey);
             if (tblAlias == null || !addedJoins.add(joinKey)) continue;
diff --git a/backend-spring/src/main/java/com/erp/service/EntityReferenceService.java b/backend-spring/src/main/java/com/erp/service/EntityReferenceService.java
index e4dd99db..ab97ef56 100644
--- a/backend-spring/src/main/java/com/erp/service/EntityReferenceService.java
+++ b/backend-spring/src/main/java/com/erp/service/EntityReferenceService.java
@@ -13,14 +13,14 @@ public class EntityReferenceService extends BaseService {
     private static final String NS = "entityReference.";
 
     public Map<String, Object> getEntityReferenceData(Map<String, Object> params) {
-        String tableName   = (String) params.get("tableName");
-        String columnName  = (String) params.get("columnName");
-        String companyCode = (String) params.get("companyCode");
+        String tableName   = (String) params.get("table_name");
+        String columnName  = (String) params.get("column_name");
+        String companyCode = (String) params.get("company_code");
         int    limit       = toInt(params.getOrDefault("limit", 100));
         Object search      = params.get("search");
 
-        Map<String, Object> columnInfo = sqlSession.selectOne(NS + "selectColumnInfo",
-                Map.of("tableName", tableName, "columnName", columnName));
+        Map<String, Object> columnInfo = sqlSession.selectOne(NS + "select_column_info",
+                Map.of("table_name", tableName, "column_name", columnName));
 
         if (columnInfo == null) {
             throw new IllegalArgumentException(
@@ -52,32 +52,32 @@ public class EntityReferenceService extends BaseService {
             throw new IllegalArgumentException("잘못된 참조 테이블/컬럼 이름입니다.");
         }
 
-        Integer tableExistsObj = sqlSession.selectOne(NS + "checkTableExistsInSchema",
-                Map.of("tableName", safeTable));
+        Integer tableExistsObj = sqlSession.selectOne(NS + "check_table_exists_in_schema",
+                Map.of("table_name", safeTable));
         int tableExists = tableExistsObj != null ? tableExistsObj : 0;
         if (tableExists == 0) {
             throw new IllegalStateException("참조 테이블 '" + safeTable + "'이 존재하지 않습니다.");
         }
 
-        Integer hasCompanyCodeObj = sqlSession.selectOne(NS + "checkTableHasCompanyCode",
-                Map.of("tableName", safeTable));
+        Integer hasCompanyCodeObj = sqlSession.selectOne(NS + "check_table_has_company_code",
+                Map.of("table_name", safeTable));
         int hasCompanyCode = hasCompanyCodeObj != null ? hasCompanyCodeObj : 0;
 
         Map<String, Object> queryParams = new HashMap<>();
-        queryParams.put("tableName",       safeTable);
-        queryParams.put("referenceColumn", safeRefCol);
-        queryParams.put("displayColumn",   safeDispCol);
-        queryParams.put("companyCode",     companyCode);
-        queryParams.put("hasCompanyCode",  hasCompanyCode > 0);
+        queryParams.put("table_name",       safeTable);
+        queryParams.put("reference_column", safeRefCol);
+        queryParams.put("display_column",   safeDispCol);
+        queryParams.put("company_code",     companyCode);
+        queryParams.put("has_company_code",  hasCompanyCode > 0);
         queryParams.put("limit",           limit);
         if (search != null && !search.toString().isBlank()) {
-            queryParams.put("searchLike", "%" + search + "%");
+            queryParams.put("search_like", "%" + search + "%");
         }
 
         log.info("엔티티 참조 데이터 조회: {}.{} -> {}.{} (display: {}), company={}",
                 tableName, columnName, safeTable, safeRefCol, safeDispCol, companyCode);
 
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "selectReferenceData", queryParams);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "select_reference_data", queryParams);
 
         List<Map<String, Object>> options = new ArrayList<>();
         for (Map<String, Object> row : rows) {
@@ -90,33 +90,33 @@ public class EntityReferenceService extends BaseService {
         }
 
         Map<String, Object> referenceInfo = new LinkedHashMap<>();
-        referenceInfo.put("referenceTable",  safeTable);
-        referenceInfo.put("referenceColumn", safeRefCol);
-        referenceInfo.put("displayColumn",   safeDispCol);
+        referenceInfo.put("reference_table",  safeTable);
+        referenceInfo.put("reference_column", safeRefCol);
+        referenceInfo.put("display_column",   safeDispCol);
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("options",       options);
-        result.put("referenceInfo", referenceInfo);
+        result.put("reference_info", referenceInfo);
         return result;
     }
 
     public Map<String, Object> getCodeData(Map<String, Object> params) {
-        String codeCategory = (String) params.get("codeCategory");
-        String companyCode  = (String) params.get("companyCode");
+        String codeCategory = (String) params.get("code_category");
+        String companyCode  = (String) params.get("company_code");
         int    limit        = toInt(params.getOrDefault("limit", 100));
         Object search       = params.get("search");
 
         Map<String, Object> queryParams = new HashMap<>();
-        queryParams.put("codeCategory", codeCategory);
-        queryParams.put("companyCode",  companyCode);
+        queryParams.put("code_category", codeCategory);
+        queryParams.put("company_code",  companyCode);
         queryParams.put("limit",        limit);
         if (search != null && !search.toString().isBlank()) {
-            queryParams.put("searchLike", "%" + search + "%");
+            queryParams.put("search_like", "%" + search + "%");
         }
 
         log.info("공통 코드 데이터 조회: category={}, company={}", codeCategory, companyCode);
 
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "selectCodeData", queryParams);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "select_code_data", queryParams);
 
         List<Map<String, Object>> options = new ArrayList<>();
         for (Map<String, Object> row : rows) {
@@ -128,7 +128,7 @@ public class EntityReferenceService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("options",      options);
-        result.put("codeCategory", codeCategory);
+        result.put("code_category", codeCategory);
         return result;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/EntitySearchService.java b/backend-spring/src/main/java/com/erp/service/EntitySearchService.java
index afa2296c..84fde89b 100644
--- a/backend-spring/src/main/java/com/erp/service/EntitySearchService.java
+++ b/backend-spring/src/main/java/com/erp/service/EntitySearchService.java
@@ -31,8 +31,8 @@ public class EntitySearchService extends BaseService {
 
     private Set<String> fetchColumns(String tableName) {
         Map<String, Object> p = new HashMap<>();
-        p.put("tableName", tableName);
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getTableColumnList", p);
+        p.put("table_name", tableName);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_table_column_list", p);
         return rows.stream()
                 .map(r -> (String) r.get("column_name"))
                 .filter(Objects::nonNull)
@@ -140,7 +140,7 @@ public class EntitySearchService extends BaseService {
                     whereClause.append(")");
                 }
             }
-            case "notIn" -> {
+            case "not_in" -> {
                 List<String> vals = toList(value);
                 if (!vals.isEmpty()) {
                     whereClause.append(" AND \"").append(safeCol).append("\" NOT IN (");
@@ -158,8 +158,8 @@ public class EntitySearchService extends BaseService {
                 whereClause.append(" AND \"").append(safeCol).append("\"::text ILIKE #{condVal_").append(i).append("}");
                 params.put("condVal_" + i, "%" + value + "%");
             }
-            case "isNull"    -> whereClause.append(" AND \"").append(safeCol).append("\" IS NULL");
-            case "isNotNull" -> whereClause.append(" AND \"").append(safeCol).append("\" IS NOT NULL");
+            case "is_null"    -> whereClause.append(" AND \"").append(safeCol).append("\" IS NULL");
+            case "is_not_null" -> whereClause.append(" AND \"").append(safeCol).append("\" IS NOT NULL");
             default -> {
                 int i = idx.getAndIncrement();
                 whereClause.append(" AND \"").append(safeCol).append("\" = #{condVal_").append(i).append("}");
@@ -180,12 +180,12 @@ public class EntitySearchService extends BaseService {
     }
 
     public Map<String, Object> searchEntity(Map<String, Object> params) {
-        String tableName = sanitize((String) params.get("tableName"));
+        String tableName = sanitize((String) params.get("table_name"));
         if (tableName.isEmpty()) {
             throw new IllegalArgumentException("테이블명이 지정되지 않았습니다.");
         }
 
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         Set<String> existingColumns = fetchColumns(tableName);
 
         StringBuilder whereClause = new StringBuilder();
@@ -198,8 +198,8 @@ public class EntitySearchService extends BaseService {
             qp.put("condVal_" + i, companyCode);
         }
 
-        String searchText   = (String) params.getOrDefault("searchText", "");
-        String searchFields = (String) params.getOrDefault("searchFields", "");
+        String searchText   = (String) params.getOrDefault("search_text", "");
+        String searchFields = (String) params.getOrDefault("search_fields", "");
         if (searchText != null && !searchText.isBlank()) {
             List<String> fields = Arrays.stream(searchFields.split(","))
                     .map(String::trim).filter(f -> !f.isEmpty() && existingColumns.contains(f))
@@ -228,7 +228,7 @@ public class EntitySearchService extends BaseService {
             }
         }
 
-        String filterCondition = (String) params.getOrDefault("filterCondition", "{}");
+        String filterCondition = (String) params.getOrDefault("filter_condition", "{}");
         applyFilterCondition(filterCondition, existingColumns, whereClause, qp, idx, tableName);
 
         String orderByColumn = "1";
@@ -237,8 +237,8 @@ public class EntitySearchService extends BaseService {
         } else {
             try {
                 Map<String, Object> pkp = new HashMap<>();
-                pkp.put("tableName", tableName);
-                Map<String, Object> pk = sqlSession.selectOne(NS + "getPrimaryKeyInfo", pkp);
+                pkp.put("table_name", tableName);
+                Map<String, Object> pk = sqlSession.selectOne(NS + "get_primary_key_info", pkp);
                 if (pk != null && pk.get("column_name") != null) {
                     orderByColumn = "\"" + sanitize((String) pk.get("column_name")) + "\"";
                 }
@@ -251,14 +251,14 @@ public class EntitySearchService extends BaseService {
         int limit  = parseIntOrDefault(params.get("limit"), 20);
         int offset = (page - 1) * limit;
 
-        qp.put("tableName",     tableName);
-        qp.put("whereClause",   whereClause.toString());
-        qp.put("orderByColumn", orderByColumn);
-        qp.put("pageLimit",     limit);
-        qp.put("pageOffset",    offset);
+        qp.put("table_name",     tableName);
+        qp.put("where_clause",   whereClause.toString());
+        qp.put("order_by_column", orderByColumn);
+        qp.put("page_limit",     limit);
+        qp.put("page_offset",    offset);
 
-        List<Map<String, Object>> data = sqlSession.selectList(NS + "getEntitySearchList", qp);
-        Integer totalObj = sqlSession.selectOne(NS + "getEntitySearchListCnt", qp);
+        List<Map<String, Object>> data = sqlSession.selectList(NS + "get_entity_search_list", qp);
+        Integer totalObj = sqlSession.selectOne(NS + "get_entity_search_list_cnt", qp);
         int total = totalObj != null ? totalObj : 0;
 
         Map<String, Object> result = new LinkedHashMap<>();
@@ -272,12 +272,12 @@ public class EntitySearchService extends BaseService {
     }
 
     public List<Map<String, Object>> getEntityOptions(Map<String, Object> params) {
-        String tableName = sanitize((String) params.get("tableName"));
+        String tableName = sanitize((String) params.get("table_name"));
         if (tableName.isEmpty()) {
             throw new IllegalArgumentException("테이블명이 지정되지 않았습니다.");
         }
 
-        String companyCode    = (String) params.get("companyCode");
+        String companyCode    = (String) params.get("company_code");
         String requestedValue = sanitize((String) params.getOrDefault("value", "id"));
         String requestedLabel = sanitize((String) params.getOrDefault("label", "name"));
         String fieldsParam    = (String) params.get("fields");
@@ -320,23 +320,23 @@ public class EntitySearchService extends BaseService {
 
         applyFilters(filtersJson, existingColumns, whereClause, qp, idx, tableName);
 
-        qp.put("tableName",     tableName);
-        qp.put("selectColumns", "\"" + valueCol + "\" AS value, \"" + labelCol + "\" AS label" + extraColsExpr);
-        qp.put("whereClause",   whereClause.toString());
-        qp.put("labelColumn",   "\"" + labelCol + "\"");
+        qp.put("table_name",     tableName);
+        qp.put("select_columns", "\"" + valueCol + "\" AS value, \"" + labelCol + "\" AS label" + extraColsExpr);
+        qp.put("where_clause",   whereClause.toString());
+        qp.put("label_column",   "\"" + labelCol + "\"");
 
-        return sqlSession.selectList(NS + "getEntityOptionList", qp);
+        return sqlSession.selectList(NS + "get_entity_option_list", qp);
     }
 
     public List<Map<String, Object>> getDistinctColumnValues(Map<String, Object> params) {
-        String tableName  = sanitize((String) params.get("tableName"));
-        String columnName = sanitize((String) params.get("columnName"));
+        String tableName  = sanitize((String) params.get("table_name"));
+        String columnName = sanitize((String) params.get("column_name"));
 
         if (tableName.isEmpty()) throw new IllegalArgumentException("테이블명이 지정되지 않았습니다.");
         if (columnName.isEmpty()) throw new IllegalArgumentException("컬럼명이 지정되지 않았습니다.");
 
-        String companyCode = (String) params.get("companyCode");
-        String labelColReq = sanitize((String) params.getOrDefault("labelColumn", ""));
+        String companyCode = (String) params.get("company_code");
+        String labelColReq = sanitize((String) params.getOrDefault("label_column", ""));
         String filtersJson = (String) params.get("filters");
 
         Set<String> existingColumns = fetchColumns(tableName);
@@ -361,12 +361,12 @@ public class EntitySearchService extends BaseService {
 
         applyFilters(filtersJson, existingColumns, whereClause, qp, idx, tableName);
 
-        qp.put("tableName",   tableName);
-        qp.put("valueColumn", "\"" + columnName + "\"");
-        qp.put("labelColumn", "\"" + effectiveLabelCol + "\"");
-        qp.put("whereClause", whereClause.toString());
+        qp.put("table_name",   tableName);
+        qp.put("value_column", "\"" + columnName + "\"");
+        qp.put("label_column", "\"" + effectiveLabelCol + "\"");
+        qp.put("where_clause", whereClause.toString());
 
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getDistinctValueList", qp);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_distinct_value_list", qp);
 
         if (rows.isEmpty()) return rows;
 
@@ -378,11 +378,11 @@ public class EntitySearchService extends BaseService {
 
         try {
             Map<String, Object> cvp = new HashMap<>();
-            cvp.put("tableName",   tableName);
-            cvp.put("columnName",  columnName);
-            cvp.put("rawValues",   rawValues);
-            cvp.put("companyCode", companyCode);
-            List<Map<String, Object>> cvRows = sqlSession.selectList(NS + "getCategoryValueList", cvp);
+            cvp.put("table_name",   tableName);
+            cvp.put("column_name",  columnName);
+            cvp.put("raw_values",   rawValues);
+            cvp.put("company_code", companyCode);
+            List<Map<String, Object>> cvRows = sqlSession.selectList(NS + "get_category_value_list", cvp);
             for (Map<String, Object> r : cvRows) {
                 labelMap.put((String) r.get("value_code"), (String) r.get("value_label"));
             }
@@ -392,17 +392,17 @@ public class EntitySearchService extends BaseService {
 
         try {
             Map<String, Object> ttcp = new HashMap<>();
-            ttcp.put("tableName",  tableName);
-            ttcp.put("columnName", columnName);
-            Map<String, Object> ttcRow = sqlSession.selectOne(NS + "getCodeCategoryInfo", ttcp);
+            ttcp.put("table_name",  tableName);
+            ttcp.put("column_name", columnName);
+            Map<String, Object> ttcRow = sqlSession.selectOne(NS + "get_code_category_info", ttcp);
             String codeCategory = ttcRow != null ? (String) ttcRow.get("code_category") : null;
 
             if (codeCategory != null) {
                 Map<String, Object> cip = new HashMap<>();
-                cip.put("codeCategory", codeCategory);
-                cip.put("rawValues",    rawValues);
-                cip.put("companyCode",  companyCode);
-                List<Map<String, Object>> ciRows = sqlSession.selectList(NS + "getCodeInfoList", cip);
+                cip.put("code_category", codeCategory);
+                cip.put("raw_values",    rawValues);
+                cip.put("company_code",  companyCode);
+                List<Map<String, Object>> ciRows = sqlSession.selectList(NS + "get_code_info_list", cip);
                 for (Map<String, Object> r : ciRows) {
                     String codeValue = (String) r.get("code_value");
                     if (!labelMap.containsKey(codeValue)) {
diff --git a/backend-spring/src/main/java/com/erp/service/ExcelMappingService.java b/backend-spring/src/main/java/com/erp/service/ExcelMappingService.java
index c8295383..29535438 100644
--- a/backend-spring/src/main/java/com/erp/service/ExcelMappingService.java
+++ b/backend-spring/src/main/java/com/erp/service/ExcelMappingService.java
@@ -37,15 +37,15 @@ public class ExcelMappingService extends BaseService {
      * 엑셀 컬럼 구조로 매핑 템플릿 조회
      */
     public Map<String, Object> findMappingByColumns(Map<String, Object> params) {
-        String tableName = String.valueOf(params.get("tableName"));
-        List<String> excelColumns = toStringList(params.get("excelColumns"));
-        String companyCode = (String) params.getOrDefault("companyCode", "*");
+        String tableName = String.valueOf(params.get("table_name"));
+        List<String> excelColumns = toStringList(params.get("excel_columns"));
+        String companyCode = (String) params.getOrDefault("company_code", "*");
 
         String hash = generateColumnsHash(excelColumns);
         Map<String, Object> qp = new HashMap<>();
-        qp.put("tableName", tableName);
-        qp.put("excelColumnsHash", hash);
-        qp.put("companyCode", companyCode);
+        qp.put("table_name", tableName);
+        qp.put("excel_columns_hash", hash);
+        qp.put("company_code", companyCode);
 
         if ("*".equals(companyCode)) {
             return sqlSession.selectOne("excelMapping.findExcelMappingByHash", qp);
@@ -59,10 +59,10 @@ public class ExcelMappingService extends BaseService {
      */
     @Transactional
     public Map<String, Object> saveMappingTemplate(Map<String, Object> params) {
-        String tableName = String.valueOf(params.get("tableName"));
-        List<String> excelColumns = toStringList(params.get("excelColumns"));
-        Object columnMappings = params.get("columnMappings");
-        String companyCode = (String) params.getOrDefault("companyCode", "*");
+        String tableName = String.valueOf(params.get("table_name"));
+        List<String> excelColumns = toStringList(params.get("excel_columns"));
+        Object columnMappings = params.get("column_mappings");
+        String companyCode = (String) params.getOrDefault("company_code", "*");
 
         String hash = generateColumnsHash(excelColumns);
 
@@ -78,18 +78,18 @@ public class ExcelMappingService extends BaseService {
         }
 
         Map<String, Object> qp = new HashMap<>();
-        qp.put("tableName", tableName);
-        qp.put("excelColumns", excelColumnsJson);
-        qp.put("excelColumnsHash", hash);
-        qp.put("columnMappings", columnMappingsJson);
-        qp.put("companyCode", companyCode);
+        qp.put("table_name", tableName);
+        qp.put("excel_columns", excelColumnsJson);
+        qp.put("excel_columns_hash", hash);
+        qp.put("column_mappings", columnMappingsJson);
+        qp.put("company_code", companyCode);
         sqlSession.insert("excelMapping.upsertExcelMapping", qp);
 
         // 저장 후 조회
         return findMappingByColumns(Map.of(
-            "tableName", tableName,
-            "excelColumns", excelColumns,
-            "companyCode", companyCode
+            "table_name", tableName,
+            "excel_columns", excelColumns,
+            "company_code", companyCode
         ));
     }
 
@@ -97,11 +97,11 @@ public class ExcelMappingService extends BaseService {
      * 테이블의 매핑 템플릿 목록 조회
      */
     public List<Map<String, Object>> getMappingTemplates(Map<String, Object> params) {
-        String tableName = String.valueOf(params.get("tableName"));
-        String companyCode = (String) params.getOrDefault("companyCode", "*");
+        String tableName = String.valueOf(params.get("table_name"));
+        String companyCode = (String) params.getOrDefault("company_code", "*");
         Map<String, Object> qp = new HashMap<>();
-        qp.put("tableName", tableName);
-        qp.put("companyCode", companyCode);
+        qp.put("table_name", tableName);
+        qp.put("company_code", companyCode);
 
         if ("*".equals(companyCode)) {
             return sqlSession.selectList("excelMapping.getExcelMappingListByTable", qp);
@@ -115,7 +115,7 @@ public class ExcelMappingService extends BaseService {
      */
     @Transactional
     public boolean deleteMappingTemplate(Map<String, Object> params) {
-        String companyCode = (String) params.getOrDefault("companyCode", "*");
+        String companyCode = (String) params.getOrDefault("company_code", "*");
         int deleted;
         if ("*".equals(companyCode)) {
             deleted = sqlSession.delete("excelMapping.deleteExcelMapping", params);
diff --git a/backend-spring/src/main/java/com/erp/service/ExternalCallConfigService.java b/backend-spring/src/main/java/com/erp/service/ExternalCallConfigService.java
index 061e7ab3..4f42808f 100644
--- a/backend-spring/src/main/java/com/erp/service/ExternalCallConfigService.java
+++ b/backend-spring/src/main/java/com/erp/service/ExternalCallConfigService.java
@@ -36,7 +36,7 @@ public class ExternalCallConfigService extends BaseService {
 
     public List<Map<String, Object>> getExternalCallConfigForButtonControl(String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("is_active", "Y");
         commonService.applyCompanyCodeFilter(params);
         List<Map<String, Object>> configs = sqlSession.selectList("externalCallConfig.getExternalCallConfigList", params);
@@ -53,14 +53,14 @@ public class ExternalCallConfigService extends BaseService {
                 @SuppressWarnings("unchecked")
                 Map<String, Object> cd = (Map<String, Object>) configData;
                 @SuppressWarnings("unchecked")
-                Map<String, Object> restApi = (Map<String, Object>) cd.getOrDefault("restApiSettings", new HashMap<>());
-                simplified.put("apiUrl", restApi.getOrDefault("apiUrl", ""));
-                simplified.put("method", restApi.getOrDefault("httpMethod", "GET"));
-                simplified.put("hasDataMapping", cd.containsKey("dataMappingConfig"));
+                Map<String, Object> restApi = (Map<String, Object>) cd.getOrDefault("rest_api_settings", new HashMap<>());
+                simplified.put("api_url", restApi.getOrDefault("api_url", ""));
+                simplified.put("method", restApi.getOrDefault("http_method", "GET"));
+                simplified.put("has_data_mapping", cd.containsKey("data_mapping_config"));
             } else {
-                simplified.put("apiUrl", "");
+                simplified.put("api_url", "");
                 simplified.put("method", "GET");
-                simplified.put("hasDataMapping", false);
+                simplified.put("has_data_mapping", false);
             }
             result.add(simplified);
         }
@@ -162,17 +162,17 @@ public class ExternalCallConfigService extends BaseService {
 
         // Node.js와 동일한 검증 로직
         if ("discord".equals(apiType) || "slack".equals(apiType)) {
-            if (!configData.containsKey("webhookUrl")) {
+            if (!configData.containsKey("webhook_url")) {
                 return resultMap(false, ("discord".equals(apiType) ? "Discord" : "Slack") + " 웹훅 URL이 필요합니다.");
             }
         } else if ("kakao-talk".equals(apiType)) {
-            if (!configData.containsKey("accessToken")) {
+            if (!configData.containsKey("access_token")) {
                 return resultMap(false, "카카오톡 액세스 토큰이 필요합니다.");
             }
         } else if ("rest-api".equals(callType)) {
             @SuppressWarnings("unchecked")
-            Map<String, Object> restApi = (Map<String, Object>) configData.getOrDefault("restApiSettings", new HashMap<>());
-            if (restApi.get("apiUrl") == null) {
+            Map<String, Object> restApi = (Map<String, Object>) configData.getOrDefault("rest_api_settings", new HashMap<>());
+            if (restApi.get("api_url") == null) {
                 return resultMap(false, "API URL이 필요합니다.");
             }
         }
@@ -190,30 +190,30 @@ public class ExternalCallConfigService extends BaseService {
 
         if (config == null) {
             Map<String, Object> r = resultMap(false, "외부 호출 설정을 찾을 수 없습니다: ID " + id);
-            r.put("executionTime", System.currentTimeMillis() - startTime);
+            r.put("execution_time", System.currentTimeMillis() - startTime);
             return r;
         }
 
         Object configDataRaw = config.get("config_data");
         if (!(configDataRaw instanceof Map)) {
             Map<String, Object> r = resultMap(false, "config_data가 유효하지 않습니다.");
-            r.put("executionTime", System.currentTimeMillis() - startTime);
+            r.put("execution_time", System.currentTimeMillis() - startTime);
             return r;
         }
 
         @SuppressWarnings("unchecked")
         Map<String, Object> configData = (Map<String, Object>) configDataRaw;
         @SuppressWarnings("unchecked")
-        Map<String, Object> restApi = (Map<String, Object>) configData.getOrDefault("restApiSettings", new HashMap<>());
+        Map<String, Object> restApi = (Map<String, Object>) configData.getOrDefault("rest_api_settings", new HashMap<>());
 
-        String apiUrl = str(restApi, "apiUrl");
+        String apiUrl = str(restApi, "api_url");
         if (apiUrl == null || apiUrl.isBlank()) {
             Map<String, Object> r = resultMap(false, "REST API URL이 설정되지 않았습니다.");
-            r.put("executionTime", System.currentTimeMillis() - startTime);
+            r.put("execution_time", System.currentTimeMillis() - startTime);
             return r;
         }
 
-        String httpMethod = str(restApi, "httpMethod");
+        String httpMethod = str(restApi, "http_method");
         if (httpMethod == null) httpMethod = "GET";
 
         try {
@@ -248,13 +248,13 @@ public class ExternalCallConfigService extends BaseService {
             result.put("success", success);
             result.put("message", success ? "외부호출 '" + config.get("config_name") + "' 실행 완료" : "외부호출 실행 실패");
             result.put("data", responseData);
-            result.put("executionTime", executionTime);
+            result.put("execution_time", executionTime);
             return result;
 
         } catch (Exception e) {
             log.error("외부호출 실행 오류 (id={}): {}", id, e.getMessage());
             Map<String, Object> result = resultMap(false, "외부호출 실행 실패: " + e.getMessage());
-            result.put("executionTime", System.currentTimeMillis() - startTime);
+            result.put("execution_time", System.currentTimeMillis() - startTime);
             result.put("error", e.getMessage());
             return result;
         }
diff --git a/backend-spring/src/main/java/com/erp/service/ExternalCallService.java b/backend-spring/src/main/java/com/erp/service/ExternalCallService.java
index a2f90d0d..72b63b61 100644
--- a/backend-spring/src/main/java/com/erp/service/ExternalCallService.java
+++ b/backend-spring/src/main/java/com/erp/service/ExternalCallService.java
@@ -31,9 +31,9 @@ public class ExternalCallService extends BaseService {
         long startTime = System.currentTimeMillis();
         try {
             Map<String, Object> settings = (Map<String, Object>) request.get("settings");
-            Map<String, Object> templateData = (Map<String, Object>) request.get("templateData");
+            Map<String, Object> templateData = (Map<String, Object>) request.get("template_data");
 
-            String callType = (String) settings.get("callType");
+            String callType = (String) settings.get("call_type");
             Map<String, Object> result;
 
             switch (callType) {
@@ -44,14 +44,14 @@ public class ExternalCallService extends BaseService {
                 default -> throw new IllegalArgumentException("지원되지 않는 호출 타입: " + callType);
             }
 
-            result.put("executionTime", System.currentTimeMillis() - startTime);
+            result.put("execution_time", System.currentTimeMillis() - startTime);
             result.put("timestamp", new Date());
             return result;
         } catch (Exception e) {
             Map<String, Object> errorResult = new LinkedHashMap<>();
             errorResult.put("success", false);
             errorResult.put("error", e.getMessage());
-            errorResult.put("executionTime", System.currentTimeMillis() - startTime);
+            errorResult.put("execution_time", System.currentTimeMillis() - startTime);
             errorResult.put("timestamp", new Date());
             return errorResult;
         }
@@ -62,7 +62,7 @@ public class ExternalCallService extends BaseService {
     @SuppressWarnings("unchecked")
     private Map<String, Object> executeRestApiCall(Map<String, Object> settings,
                                                     Map<String, Object> templateData) {
-        String apiType = (String) settings.getOrDefault("apiType", "generic");
+        String apiType = (String) settings.getOrDefault("api_type", "generic");
         return switch (apiType) {
             case "slack" -> executeSlackWebhook(settings, templateData);
             case "kakao-talk" -> executeKakaoTalkApi(settings, templateData);
@@ -81,13 +81,13 @@ public class ExternalCallService extends BaseService {
         payload.put("text", message);
         payload.put("channel", settings.get("channel"));
         payload.put("username", settings.getOrDefault("username", "DataFlow Bot"));
-        payload.put("icon_emoji", settings.getOrDefault("iconEmoji", ":robot_face:"));
+        payload.put("icon_emoji", settings.getOrDefault("icon_emoji", ":robot_face:"));
 
         Map<String, String> headers = Map.of("Content-Type", "application/json");
         int timeout = getTimeout(settings);
 
         return makeHttpRequest(
-            (String) settings.get("webhookUrl"), "POST", headers,
+            (String) settings.get("webhook_url"), "POST", headers,
             toJsonString(payload), timeout);
     }
 
@@ -108,7 +108,7 @@ public class ExternalCallService extends BaseService {
         String body = "template_object=" + URLEncoder.encode(toJsonString(payload), StandardCharsets.UTF_8);
 
         Map<String, String> headers = Map.of(
-            "Authorization", "Bearer " + settings.get("accessToken"),
+            "Authorization", "Bearer " + settings.get("access_token"),
             "Content-Type", "application/x-www-form-urlencoded"
         );
         int timeout = getTimeout(settings);
@@ -127,15 +127,15 @@ public class ExternalCallService extends BaseService {
         Map<String, Object> payload = new LinkedHashMap<>();
         payload.put("content", message);
         payload.put("username", settings.getOrDefault("username", "시스템 알리미"));
-        if (settings.get("avatarUrl") != null) {
-            payload.put("avatar_url", settings.get("avatarUrl"));
+        if (settings.get("avatar_url") != null) {
+            payload.put("avatar_url", settings.get("avatar_url"));
         }
 
         Map<String, String> headers = Map.of("Content-Type", "application/json");
         int timeout = getTimeout(settings);
 
         return makeHttpRequest(
-            (String) settings.get("webhookUrl"), "POST", headers,
+            (String) settings.get("webhook_url"), "POST", headers,
             toJsonString(payload), timeout);
     }
 
@@ -163,7 +163,7 @@ public class ExternalCallService extends BaseService {
             String authType = (String) auth.getOrDefault("type", "none");
             switch (authType) {
                 case "api-key" -> {
-                    String apiKey = (String) auth.get("apiKey");
+                    String apiKey = (String) auth.get("api_key");
                     if (apiKey != null) headers.put("X-API-Key", apiKey);
                 }
                 case "basic" -> {
@@ -180,8 +180,8 @@ public class ExternalCallService extends BaseService {
                     if (token != null) headers.put("Authorization", "Bearer " + token);
                 }
                 case "custom" -> {
-                    String headerName = (String) auth.get("headerName");
-                    String headerValue = (String) auth.get("headerValue");
+                    String headerName = (String) auth.get("header_name");
+                    String headerValue = (String) auth.get("header_value");
                     if (headerName != null && headerValue != null) {
                         headers.put(headerName, headerValue);
                     }
@@ -224,7 +224,7 @@ public class ExternalCallService extends BaseService {
 
             Map<String, Object> result = new LinkedHashMap<>();
             result.put("success", success);
-            result.put("statusCode", response.getStatusCode().value());
+            result.put("status_code", response.getStatusCode().value());
             result.put("response", response.getBody());
             return result;
         } catch (Exception e) {
@@ -241,20 +241,20 @@ public class ExternalCallService extends BaseService {
     public Map<String, Object> validateExternalCallSettings(Map<String, Object> settings) {
         List<String> errors = new ArrayList<>();
 
-        String callType = (String) settings.get("callType");
+        String callType = (String) settings.get("call_type");
         if ("rest-api".equals(callType)) {
-            String apiType = (String) settings.getOrDefault("apiType", "generic");
+            String apiType = (String) settings.getOrDefault("api_type", "generic");
             switch (apiType) {
                 case "slack" -> {
-                    if (isBlank(settings, "webhookUrl")) errors.add("슬랙 웹훅 URL이 필요합니다.");
+                    if (isBlank(settings, "webhook_url")) errors.add("슬랙 웹훅 URL이 필요합니다.");
                     if (isBlank(settings, "message")) errors.add("슬랙 메시지가 필요합니다.");
                 }
                 case "kakao-talk" -> {
-                    if (isBlank(settings, "accessToken")) errors.add("카카오톡 액세스 토큰이 필요합니다.");
+                    if (isBlank(settings, "access_token")) errors.add("카카오톡 액세스 토큰이 필요합니다.");
                     if (isBlank(settings, "message")) errors.add("카카오톡 메시지가 필요합니다.");
                 }
                 case "discord" -> {
-                    if (isBlank(settings, "webhookUrl")) errors.add("디스코드 웹훅 URL이 필요합니다.");
+                    if (isBlank(settings, "webhook_url")) errors.add("디스코드 웹훅 URL이 필요합니다.");
                     if (isBlank(settings, "message")) errors.add("디스코드 메시지가 필요합니다.");
                 }
                 default -> {
@@ -263,8 +263,8 @@ public class ExternalCallService extends BaseService {
                 }
             }
         } else if ("email".equals(callType)) {
-            if (isBlank(settings, "smtpHost")) errors.add("SMTP 호스트가 필요합니다.");
-            if (isBlank(settings, "toEmail")) errors.add("수신 이메일이 필요합니다.");
+            if (isBlank(settings, "smtp_host")) errors.add("SMTP 호스트가 필요합니다.");
+            if (isBlank(settings, "to_email")) errors.add("수신 이메일이 필요합니다.");
             if (isBlank(settings, "subject")) errors.add("이메일 제목이 필요합니다.");
         }
 
diff --git a/backend-spring/src/main/java/com/erp/service/ExternalDbConnectionService.java b/backend-spring/src/main/java/com/erp/service/ExternalDbConnectionService.java
index 6e878666..ef319b94 100644
--- a/backend-spring/src/main/java/com/erp/service/ExternalDbConnectionService.java
+++ b/backend-spring/src/main/java/com/erp/service/ExternalDbConnectionService.java
@@ -69,7 +69,7 @@ public class ExternalDbConnectionService extends BaseService {
         Map<String, Object> m = new LinkedHashMap<>();
         m.put("value", value);
         m.put("label", label);
-        m.put("defaultPort", defaultPort);
+        m.put("default_port", defaultPort);
         return m;
     }
 
@@ -77,8 +77,8 @@ public class ExternalDbConnectionService extends BaseService {
 
     public Map<String, Object> getPoolStatus() {
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("totalPools", 0);
-        result.put("activePools", 0);
+        result.put("total_pools", 0);
+        result.put("active_pools", 0);
         result.put("pools", Collections.emptyList());
         return result;
     }
@@ -124,11 +124,11 @@ public class ExternalDbConnectionService extends BaseService {
                 // 기타 그룹
                 grouped.computeIfAbsent("other", k -> {
                     Map<String, Object> otherCat = new LinkedHashMap<>();
-                    otherCat.put("typeCode", "other");
-                    otherCat.put("displayName", "기타");
+                    otherCat.put("type_code", "other");
+                    otherCat.put("display_name", "기타");
                     otherCat.put("icon", "database");
                     otherCat.put("color", "#6B7280");
-                    otherCat.put("sortOrder", 999);
+                    otherCat.put("sort_order", 999);
                     Map<String, Object> entry = new LinkedHashMap<>();
                     entry.put("category", otherCat);
                     entry.put("connections", new ArrayList<>());
@@ -181,8 +181,8 @@ public class ExternalDbConnectionService extends BaseService {
 
         // 이름 중복 확인
         Map<String, Object> dupCheck = new HashMap<>();
-        dupCheck.put("connectionName", name);
-        dupCheck.put("companyCode", companyCode);
+        dupCheck.put("connection_name", name);
+        dupCheck.put("company_code", companyCode);
         if (sqlSession.selectOne("externalDbConnection.getExternalDbConnectionByName", dupCheck) != null) {
             throw new IllegalArgumentException("이미 존재하는 연결명입니다.");
         }
@@ -220,9 +220,9 @@ public class ExternalDbConnectionService extends BaseService {
         String companyCode = str(body, "company_code");
         if (name != null && companyCode != null) {
             Map<String, Object> dupCheck = new HashMap<>();
-            dupCheck.put("connectionName", name);
-            dupCheck.put("companyCode", companyCode);
-            dupCheck.put("excludeId", id);
+            dupCheck.put("connection_name", name);
+            dupCheck.put("company_code", companyCode);
+            dupCheck.put("exclude_id", id);
             if (sqlSession.selectOne("externalDbConnection.getExternalDbConnectionByNameExclude", dupCheck) != null) {
                 throw new IllegalArgumentException("이미 존재하는 연결명입니다.");
             }
@@ -256,7 +256,7 @@ public class ExternalDbConnectionService extends BaseService {
         params.put("id", id);
         // SUPER_ADMIN("*")은 모든 연결 삭제 가능, 일반 사용자는 자사만
         if (!"*".equals(userCompanyCode)) {
-            params.put("companyCode", userCompanyCode);
+            params.put("company_code", userCompanyCode);
         }
         int deleted = sqlSession.delete("externalDbConnection.deleteExternalDbConnection", params);
         if (deleted == 0) {
@@ -315,8 +315,8 @@ public class ExternalDbConnectionService extends BaseService {
         Properties props = new Properties();
         props.setProperty("user", username);
         props.setProperty("password", password);
-        props.setProperty("connectTimeout", String.valueOf(connTimeout));
-        props.setProperty("socketTimeout", "30");
+        props.setProperty("connect_timeout", String.valueOf(connTimeout));
+        props.setProperty("socket_timeout", "30");
         if ("Y".equalsIgnoreCase(sslEnabled)) {
             props.setProperty("ssl", "true");
             props.setProperty("sslmode", "require");
@@ -512,16 +512,16 @@ public class ExternalDbConnectionService extends BaseService {
         // 메인 DB를 첫 번째로 추가
         Map<String, Object> mainDb = new LinkedHashMap<>();
         mainDb.put("id", 0);
-        mainDb.put("connectionName", "메인 데이터베이스 (현재 시스템)");
+        mainDb.put("connection_name", "메인 데이터베이스 (현재 시스템)");
         mainDb.put("description", "현재 시스템의 PostgreSQL 데이터베이스");
-        mainDb.put("dbType", "postgresql");
+        mainDb.put("db_type", "postgresql");
         mainDb.put("host", "localhost");
         mainDb.put("port", 5432);
-        mainDb.put("databaseName", "erp_database");
+        mainDb.put("database_name", "erp_database");
         mainDb.put("username", "system");
         mainDb.put("password", "***");
-        mainDb.put("isActive", "Y");
-        mainDb.put("companyCode", "*");
+        mainDb.put("is_active", "Y");
+        mainDb.put("company_code", "*");
 
         List<Map<String, Object>> result = new ArrayList<>();
         result.add(mainDb);
@@ -556,8 +556,8 @@ public class ExternalDbConnectionService extends BaseService {
         props.setProperty("user", username != null ? username : "");
         props.setProperty("password", password != null ? password : "");
         int connTimeout = toInt(conn, "connection_timeout", 30);
-        props.setProperty("connectTimeout", String.valueOf(connTimeout));
-        props.setProperty("socketTimeout", "60");
+        props.setProperty("connect_timeout", String.valueOf(connTimeout));
+        props.setProperty("socket_timeout", "60");
         String ssl = str(conn, "ssl_enabled");
         if ("Y".equalsIgnoreCase(ssl)) {
             props.setProperty("ssl", "true");
diff --git a/backend-spring/src/main/java/com/erp/service/ExternalRestApiConnectionService.java b/backend-spring/src/main/java/com/erp/service/ExternalRestApiConnectionService.java
index 4fa1bd54..8b062cda 100644
--- a/backend-spring/src/main/java/com/erp/service/ExternalRestApiConnectionService.java
+++ b/backend-spring/src/main/java/com/erp/service/ExternalRestApiConnectionService.java
@@ -49,12 +49,12 @@ public class ExternalRestApiConnectionService extends BaseService {
         }
         String filterCompany = (String) params.get("filter_company_code");
         if (filterCompany != null) {
-            params.put("filterCompanyCode", filterCompany);
+            params.put("filter_company_code", filterCompany);
         }
         String isActive = (String) params.get("is_active");
-        if (isActive != null) params.put("isActive", isActive);
+        if (isActive != null) params.put("is_active", isActive);
         String authType = (String) params.get("auth_type");
-        if (authType != null) params.put("authType", authType);
+        if (authType != null) params.put("auth_type", authType);
 
         commonService.applyCompanyCodeFilter(params);
         List<Map<String, Object>> connections = sqlSession.selectList("externalRestApiConnection.getExternalRestApiConnectionList", params);
@@ -88,14 +88,14 @@ public class ExternalRestApiConnectionService extends BaseService {
         encryptAuthConfig(params);
 
         if (params.get("timeout") == null) params.put("timeout", 30000);
-        if (params.get("retryCount") == null) params.put("retryCount", 0);
-        if (params.get("retryDelay") == null) params.put("retryDelay", 1000);
-        if (params.get("isActive") == null) params.put("isActive", "Y");
-        if (params.get("defaultMethod") == null) params.put("defaultMethod", "GET");
-        if (params.get("saveToHistory") == null) params.put("saveToHistory", "N");
+        if (params.get("retry_count") == null) params.put("retry_count", 0);
+        if (params.get("retry_delay") == null) params.put("retry_delay", 1000);
+        if (params.get("is_active") == null) params.put("is_active", "Y");
+        if (params.get("default_method") == null) params.put("default_method", "GET");
+        if (params.get("save_to_history") == null) params.put("save_to_history", "N");
 
         sqlSession.insert("externalRestApiConnection.insertExternalRestApiConnection", params);
-        log.info("REST API 연결 생성 성공: {}", params.get("connectionName"));
+        log.info("REST API 연결 생성 성공: {}", params.get("connection_name"));
 
         return params;
     }
@@ -115,8 +115,8 @@ public class ExternalRestApiConnectionService extends BaseService {
         serializeJsonFields(params);
         encryptAuthConfig(params);
 
-        if (params.containsKey("defaultBody")) {
-            params.put("hasDefaultBody", "Y");
+        if (params.containsKey("default_body")) {
+            params.put("has_default_body", "Y");
         }
 
         sqlSession.update("externalRestApiConnection.updateExternalRestApiConnection", params);
@@ -234,8 +234,8 @@ public class ExternalRestApiConnectionService extends BaseService {
         try {
             Map<String, Object> updateParams = new HashMap<>();
             updateParams.put("id", id);
-            updateParams.put("lastTestResult", Boolean.TRUE.equals(result.get("success")) ? "Y" : "N");
-            updateParams.put("lastTestMessage", result.get("message"));
+            updateParams.put("last_test_result", Boolean.TRUE.equals(result.get("success")) ? "Y" : "N");
+            updateParams.put("last_test_message", result.get("message"));
             sqlSession.update("externalRestApiConnection.updateExternalRestApiConnectionTestResult", updateParams);
         } catch (Exception e) {
             log.warn("테스트 결과 저장 실패: {}", e.getMessage());
@@ -300,24 +300,24 @@ public class ExternalRestApiConnectionService extends BaseService {
             Map<String, Object> firstItem = (Map<String, Object>) dataArray.get(0);
             for (Map.Entry<String, Object> entry : firstItem.entrySet()) {
                 Map<String, Object> col = new LinkedHashMap<>();
-                col.put("columnName", entry.getKey());
-                col.put("columnLabel", entry.getKey());
-                col.put("dataType", entry.getValue() != null ? entry.getValue().getClass().getSimpleName() : "String");
+                col.put("column_name", entry.getKey());
+                col.put("column_label", entry.getKey());
+                col.put("data_type", entry.getValue() != null ? entry.getValue().getClass().getSimpleName() : "String");
                 columns.add(col);
             }
         }
 
         Map<String, Object> connectionInfo = new LinkedHashMap<>();
-        connectionInfo.put("connectionId", conn.get("id"));
-        connectionInfo.put("connectionName", conn.get("connection_name"));
-        connectionInfo.put("baseUrl", conn.get("base_url"));
+        connectionInfo.put("connection_id", conn.get("id"));
+        connectionInfo.put("connection_name", conn.get("connection_name"));
+        connectionInfo.put("base_url", conn.get("base_url"));
         connectionInfo.put("endpoint", effectiveEndpoint);
 
         Map<String, Object> data = new LinkedHashMap<>();
         data.put("rows", dataArray);
         data.put("columns", columns);
         data.put("total", dataArray.size());
-        data.put("connectionInfo", connectionInfo);
+        data.put("connection_info", connectionInfo);
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("success", true);
@@ -367,9 +367,9 @@ public class ExternalRestApiConnectionService extends BaseService {
                 }
             }
             case "api-key" -> {
-                String keyLocation = (String) authConfig.getOrDefault("keyLocation", "header");
-                String keyName = (String) authConfig.get("keyName");
-                String keyValue = (String) authConfig.get("keyValue");
+                String keyLocation = (String) authConfig.getOrDefault("key_location", "header");
+                String keyName = (String) authConfig.get("key_name");
+                String keyValue = (String) authConfig.get("key_value");
                 if ("header".equals(keyLocation) && keyName != null && keyValue != null) {
                     httpHeaders.set(keyName, keyValue);
                 }
@@ -393,8 +393,8 @@ public class ExternalRestApiConnectionService extends BaseService {
     }
 
     private void validateConnectionData(Map<String, Object> params) {
-        String name = (String) params.get("connectionName");
-        String baseUrl = (String) params.get("baseUrl");
+        String name = (String) params.get("connection_name");
+        String baseUrl = (String) params.get("base_url");
         if (name == null || name.isBlank()) throw new IllegalArgumentException("연결명은 필수입니다.");
         if (baseUrl == null || baseUrl.isBlank()) throw new IllegalArgumentException("기본 URL은 필수입니다.");
     }
@@ -418,22 +418,22 @@ public class ExternalRestApiConnectionService extends BaseService {
 
     @SuppressWarnings("unchecked")
     private void serializeJsonFields(Map<String, Object> params) {
-        Object headers = params.get("defaultHeaders");
+        Object headers = params.get("default_headers");
         if (headers != null && !(headers instanceof String)) {
             try {
-                params.put("defaultHeaders", objectMapper.writeValueAsString(headers));
+                params.put("default_headers", objectMapper.writeValueAsString(headers));
             } catch (JsonProcessingException e) {
-                params.put("defaultHeaders", "{}");
+                params.put("default_headers", "{}");
             }
         }
-        if (params.get("defaultHeaders") == null) {
-            params.put("defaultHeaders", "{}");
+        if (params.get("default_headers") == null) {
+            params.put("default_headers", "{}");
         }
     }
 
     @SuppressWarnings("unchecked")
     private void encryptAuthConfig(Map<String, Object> params) {
-        Object authConfigObj = params.get("authConfig");
+        Object authConfigObj = params.get("auth_config");
         if (authConfigObj == null) return;
 
         Map<String, Object> authConfig;
@@ -449,13 +449,13 @@ public class ExternalRestApiConnectionService extends BaseService {
             return;
         }
 
-        encryptField(authConfig, "keyValue");
+        encryptField(authConfig, "key_value");
         encryptField(authConfig, "token");
         encryptField(authConfig, "password");
-        encryptField(authConfig, "clientSecret");
+        encryptField(authConfig, "client_secret");
 
         try {
-            params.put("authConfig", objectMapper.writeValueAsString(authConfig));
+            params.put("auth_config", objectMapper.writeValueAsString(authConfig));
         } catch (JsonProcessingException e) {
             log.error("authConfig 직렬화 실패", e);
         }
@@ -474,10 +474,10 @@ public class ExternalRestApiConnectionService extends BaseService {
         }
 
         try {
-            decryptField(authConfig, "keyValue");
+            decryptField(authConfig, "key_value");
             decryptField(authConfig, "token");
             decryptField(authConfig, "password");
-            decryptField(authConfig, "clientSecret");
+            decryptField(authConfig, "client_secret");
             row.put("auth_config", authConfig);
         } catch (Exception e) {
             log.warn("민감 정보 복호화 실패 (암호화되지 않은 데이터일 수 있음)");
diff --git a/backend-spring/src/main/java/com/erp/service/FileService.java b/backend-spring/src/main/java/com/erp/service/FileService.java
index 7566c395..b426af35 100644
--- a/backend-spring/src/main/java/com/erp/service/FileService.java
+++ b/backend-spring/src/main/java/com/erp/service/FileService.java
@@ -35,9 +35,9 @@ public class FileService extends BaseService {
     public Map<String, Object> getFileList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        Integer totalObj = sqlSession.selectOne(NS + "getFileListCnt", params);
+        Integer totalObj = sqlSession.selectOne(NS + "get_file_list_cnt", params);
         int totalCount = totalObj != null ? totalObj : 0;
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getFileList", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_file_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
@@ -45,19 +45,19 @@ public class FileService extends BaseService {
 
     public Map<String, Object> getFileInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getFileInfo", params);
+        return sqlSession.selectOne(NS + "get_file_info", params);
     }
 
     public Map<String, Object> getFileInfoPublic(Map<String, Object> params) {
         // public 접근 — company_code 필터 없음
-        return sqlSession.selectOne(NS + "getFileInfo", params);
+        return sqlSession.selectOne(NS + "get_file_info", params);
     }
 
     // ── 타겟별 파일 목록 ────────────────────────────────────────────────────
 
     public List<Map<String, Object>> getFilesByTarget(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getFilesByTarget", params);
+        return sqlSession.selectList(NS + "get_files_by_target", params);
     }
 
     // ── 업로드 ────────────────────────────────────────────────────────────────
@@ -65,11 +65,11 @@ public class FileService extends BaseService {
     @Transactional
     public List<Map<String, Object>> uploadFiles(List<MultipartFile> files,
                                                   Map<String, Object> params) throws IOException {
-        String companyCode = (String) params.get("companyCode");
-        String writer = (String) params.getOrDefault("userId", "system");
-        String targetObjid = (String) params.getOrDefault("targetObjid", null);
-        String docType = (String) params.getOrDefault("docType", "DOCUMENT");
-        String docTypeName = (String) params.getOrDefault("docTypeName", "일반 문서");
+        String companyCode = (String) params.get("company_code");
+        String writer = (String) params.getOrDefault("user_id", "system");
+        String targetObjid = (String) params.getOrDefault("target_objid", null);
+        String docType = (String) params.getOrDefault("doc_type", "DOCUMENT");
+        String docTypeName = (String) params.getOrDefault("doc_type_name", "일반 문서");
 
         LocalDate today = LocalDate.now();
         String datePath = today.format(DateTimeFormatter.ofPattern("yyyy/MM/dd"));
@@ -105,29 +105,29 @@ public class FileService extends BaseService {
 
             Map<String, Object> fileParams = new HashMap<>();
             fileParams.put("objid", objid);
-            fileParams.put("targetObjid", targetObjid);
-            fileParams.put("savedFileName", savedFileName);
-            fileParams.put("realFileName", originalName);
-            fileParams.put("docType", docType);
-            fileParams.put("docTypeName", docTypeName);
-            fileParams.put("fileSize", file.getSize());
-            fileParams.put("fileExt", ext);
-            fileParams.put("filePath", filePath);
-            fileParams.put("companyCode", companyCode);
+            fileParams.put("target_objid", targetObjid);
+            fileParams.put("saved_file_name", savedFileName);
+            fileParams.put("real_file_name", originalName);
+            fileParams.put("doc_type", docType);
+            fileParams.put("doc_type_name", docTypeName);
+            fileParams.put("file_size", file.getSize());
+            fileParams.put("file_ext", ext);
+            fileParams.put("file_path", filePath);
+            fileParams.put("company_code", companyCode);
             fileParams.put("writer", writer);
             fileParams.put("status", "ACTIVE");
-            fileParams.put("isRepresentative", false);
+            fileParams.put("is_representative", false);
 
-            sqlSession.insert(NS + "insertFile", fileParams);
+            sqlSession.insert(NS + "insert_file", fileParams);
 
             Map<String, Object> result = new HashMap<>();
             result.put("objid", objid);
-            result.put("realFileName", originalName);
-            result.put("savedFileName", savedFileName);
-            result.put("fileSize", file.getSize());
-            result.put("fileExt", ext);
-            result.put("filePath", filePath);
-            result.put("docType", docType);
+            result.put("real_file_name", originalName);
+            result.put("saved_file_name", savedFileName);
+            result.put("file_size", file.getSize());
+            result.put("file_ext", ext);
+            result.put("file_path", filePath);
+            result.put("doc_type", docType);
             results.add(result);
         }
 
@@ -137,7 +137,7 @@ public class FileService extends BaseService {
     // ── 다운로드용 파일 경로 조회 ─────────────────────────────────────────────
 
     public Path resolveFilePath(Map<String, Object> fileInfo) {
-        String filePath = (String) fileInfo.get("filePath");
+        String filePath = (String) fileInfo.get("file_path");
         if (filePath == null) throw new IllegalStateException("파일 경로 정보가 없습니다.");
         // filePath: /companyDir/YYYY/MM/DD/savedFileName
         if (filePath.startsWith("/")) filePath = filePath.substring(1);
@@ -149,6 +149,6 @@ public class FileService extends BaseService {
     @Transactional
     public void deleteFile(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "softDeleteFile", params);
+        sqlSession.update(NS + "soft_delete_file", params);
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/FlowExternalDbConnectionService.java b/backend-spring/src/main/java/com/erp/service/FlowExternalDbConnectionService.java
index 2853a7bd..eceb7e5a 100644
--- a/backend-spring/src/main/java/com/erp/service/FlowExternalDbConnectionService.java
+++ b/backend-spring/src/main/java/com/erp/service/FlowExternalDbConnectionService.java
@@ -40,7 +40,7 @@ public class FlowExternalDbConnectionService extends BaseService {
 
     public List<Map<String, Object>> findAll(boolean activeOnly) {
         Map<String, Object> params = new HashMap<>();
-        params.put("activeOnly", activeOnly);
+        params.put("active_only", activeOnly);
         List<Map<String, Object>> rows = sqlSession.selectList("flowExternalDbConnection.selectAll", params);
         rows.forEach(this::parseJsonFields);
         return rows;
@@ -65,17 +65,17 @@ public class FlowExternalDbConnectionService extends BaseService {
 
         // 비밀번호 암호화
         String plainPassword = (String) params.get("password");
-        params.put("passwordEncrypted", encryption.encrypt(plainPassword));
+        params.put("password_encrypted", encryption.encrypt(plainPassword));
         params.remove("password");
 
         // connectionOptions → JSON string
-        if (params.get("connectionOptions") != null && !(params.get("connectionOptions") instanceof String)) {
-            params.put("connectionOptions", toJson(params.get("connectionOptions")));
+        if (params.get("connection_options") != null && !(params.get("connection_options") instanceof String)) {
+            params.put("connection_options", toJson(params.get("connection_options")));
         }
 
-        params.putIfAbsent("sslEnabled", false);
-        params.put("createdBy", userId);
-        params.put("updatedBy", userId);
+        params.putIfAbsent("ssl_enabled", false);
+        params.put("created_by", userId);
+        params.put("updated_by", userId);
 
         sqlSession.insert("flowExternalDbConnection.insert", params);
 
@@ -92,17 +92,17 @@ public class FlowExternalDbConnectionService extends BaseService {
         Map<String, Object> params = new HashMap<>(request);
         normalize(params);
         params.put("id",        id);
-        params.put("updatedBy", userId);
+        params.put("updated_by", userId);
 
         // 새 비밀번호 제공 시 암호화
         if (params.get("password") != null) {
-            params.put("passwordEncrypted", encryption.encrypt((String) params.get("password")));
+            params.put("password_encrypted", encryption.encrypt((String) params.get("password")));
             params.remove("password");
         }
 
         // connectionOptions → JSON string
-        if (params.get("connectionOptions") != null && !(params.get("connectionOptions") instanceof String)) {
-            params.put("connectionOptions", toJson(params.get("connectionOptions")));
+        if (params.get("connection_options") != null && !(params.get("connection_options") instanceof String)) {
+            params.put("connection_options", toJson(params.get("connection_options")));
         }
 
         int affected = sqlSession.update("flowExternalDbConnection.update", params);
@@ -228,13 +228,13 @@ public class FlowExternalDbConnectionService extends BaseService {
 
     /** snake_case 요청 필드를 camelCase params 로 정규화 */
     private void normalize(Map<String, Object> p) {
-        mapField(p, "db_type",         "dbType");
-        mapField(p, "database_name",   "databaseName");
-        mapField(p, "ssl_enabled",     "sslEnabled");
-        mapField(p, "connection_options", "connectionOptions");
-        mapField(p, "is_active",       "isActive");
-        mapField(p, "created_by",      "createdBy");
-        mapField(p, "updated_by",      "updatedBy");
+        mapField(p, "db_type",         "db_type");
+        mapField(p, "database_name",   "database_name");
+        mapField(p, "ssl_enabled",     "ssl_enabled");
+        mapField(p, "connection_options", "connection_options");
+        mapField(p, "is_active",       "is_active");
+        mapField(p, "created_by",      "created_by");
+        mapField(p, "updated_by",      "updated_by");
     }
 
     private void mapField(Map<String, Object> p, String from, String to) {
diff --git a/backend-spring/src/main/java/com/erp/service/FlowService.java b/backend-spring/src/main/java/com/erp/service/FlowService.java
index 2b3f2b63..ecc74355 100644
--- a/backend-spring/src/main/java/com/erp/service/FlowService.java
+++ b/backend-spring/src/main/java/com/erp/service/FlowService.java
@@ -28,11 +28,11 @@ public class FlowService extends BaseService {
     }
 
     public Map<String, Object> getFlowDefinitionInfo(int id, String companyCode) {
-        Map<String, Object> params = Map.of("id", id, "companyCode", companyCode);
+        Map<String, Object> params = Map.of("id", id, "company_code", companyCode);
         Map<String, Object> definition = sqlSession.selectOne("flow.getFlowDefinitionInfo", params);
         if (definition == null) return null;
 
-        Map<String, Object> stepParams = Map.of("flowId", id);
+        Map<String, Object> stepParams = Map.of("flow_id", id);
         List<Map<String, Object>> steps = sqlSession.selectList("flow.getFlowStepList", stepParams);
         List<Map<String, Object>> connections = sqlSession.selectList("flow.getFlowConnectionList", stepParams);
 
@@ -45,11 +45,11 @@ public class FlowService extends BaseService {
 
     /** company_code 에 상관없이 단순 존재 확인 (소유권 검증용) */
     public Map<String, Object> getFlowDefinitionById(int id, String companyCode) {
-        return sqlSession.selectOne("flow.getFlowDefinitionInfo", Map.of("id", id, "companyCode", companyCode));
+        return sqlSession.selectOne("flow.getFlowDefinitionInfo", Map.of("id", id, "company_code", companyCode));
     }
 
     public boolean checkTableExists(String tableName) {
-        Number n = sqlSession.selectOne("flow.checkTableExists", Map.of("tableName", tableName));
+        Number n = sqlSession.selectOne("flow.checkTableExists", Map.of("table_name", tableName));
         return (n != null ? n.intValue() : 0) > 0;
     }
 
@@ -58,18 +58,18 @@ public class FlowService extends BaseService {
                                                      String userId,
                                                      String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("createdBy", userId);
+        params.put("company_code", companyCode);
+        params.put("created_by", userId);
         params.put("name",                  body.get("name"));
         params.put("description",           body.get("description"));
-        params.put("tableName",             body.get("tableName"));
-        params.put("dbSourceType",          body.getOrDefault("dbSourceType", "internal"));
-        params.put("dbConnectionId",        body.get("dbConnectionId"));
-        params.put("restApiConnectionId",   body.get("restApiConnectionId"));
-        params.put("restApiEndpoint",       body.get("restApiEndpoint"));
-        params.put("restApiJsonPath",       body.get("restApiJsonPath"));
-        params.put("restApiConnections",    toJsonString(body.get("restApiConnections")));
-        params.put("isActive",              body.getOrDefault("isActive", true));
+        params.put("table_name",             body.get("table_name"));
+        params.put("db_source_type",          body.getOrDefault("db_source_type", "internal"));
+        params.put("db_connection_id",        body.get("db_connection_id"));
+        params.put("rest_api_connection_id",   body.get("rest_api_connection_id"));
+        params.put("rest_api_endpoint",       body.get("rest_api_endpoint"));
+        params.put("rest_api_json_path",       body.get("rest_api_json_path"));
+        params.put("rest_api_connections",    toJsonString(body.get("rest_api_connections")));
+        params.put("is_active",              body.getOrDefault("is_active", true));
 
         sqlSession.insert("flow.insertFlowDefinition", params);
         return getFlowDefinitionById(toInt(params.get("id"), 0), companyCode);
@@ -81,10 +81,10 @@ public class FlowService extends BaseService {
                                                      String companyCode) {
         Map<String, Object> params = new HashMap<>();
         params.put("id", id);
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         if (body.containsKey("name"))        params.put("name",        body.get("name"));
         if (body.containsKey("description")) params.put("description", body.get("description"));
-        if (body.containsKey("isActive"))    params.put("isActive",    body.get("isActive"));
+        if (body.containsKey("is_active"))    params.put("is_active",    body.get("is_active"));
 
         sqlSession.update("flow.updateFlowDefinition", params);
         return getFlowDefinitionById(id, companyCode);
@@ -93,7 +93,7 @@ public class FlowService extends BaseService {
     @Transactional
     public boolean deleteFlowDefinition(int id, String companyCode) {
         if (getFlowDefinitionById(id, companyCode) == null) return false;
-        sqlSession.delete("flow.deleteFlowDefinition", Map.of("id", id, "companyCode", companyCode));
+        sqlSession.delete("flow.deleteFlowDefinition", Map.of("id", id, "company_code", companyCode));
         return true;
     }
 
@@ -102,7 +102,7 @@ public class FlowService extends BaseService {
     // ══════════════════════════════════════════════════════════
 
     public List<Map<String, Object>> getFlowStepList(int flowId) {
-        return sqlSession.selectList("flow.getFlowStepList", Map.of("flowId", flowId));
+        return sqlSession.selectList("flow.getFlowStepList", Map.of("flow_id", flowId));
     }
 
     public Map<String, Object> getFlowStepById(int id) {
@@ -113,22 +113,22 @@ public class FlowService extends BaseService {
     public Map<String, Object> insertFlowStep(int flowDefinitionId,
                                                Map<String, Object> body) {
         Map<String, Object> params = new HashMap<>();
-        params.put("flowDefinitionId", flowDefinitionId);
-        params.put("stepName",         body.get("stepName"));
-        params.put("stepOrder",        body.get("stepOrder"));
-        params.put("tableName",        body.get("tableName"));
-        params.put("conditionJson",    toJsonString(body.get("conditionJson")));
+        params.put("flow_definition_id", flowDefinitionId);
+        params.put("step_name",         body.get("step_name"));
+        params.put("step_order",        body.get("step_order"));
+        params.put("table_name",        body.get("table_name"));
+        params.put("condition_json",    toJsonString(body.get("condition_json")));
         params.put("color",            body.get("color"));
-        params.put("positionX",        body.get("positionX"));
-        params.put("positionY",        body.get("positionY"));
-        params.put("moveType",         body.get("moveType"));
-        params.put("statusColumn",     body.get("statusColumn"));
-        params.put("statusValue",      body.get("statusValue"));
-        params.put("targetTable",      body.get("targetTable"));
-        params.put("fieldMappings",    toJsonString(body.get("fieldMappings")));
-        params.put("integrationType",  body.get("integrationType"));
-        params.put("integrationConfig",toJsonString(body.get("integrationConfig")));
-        params.put("displayConfig",    toJsonString(body.get("displayConfig")));
+        params.put("position_x",        body.get("position_x"));
+        params.put("position_y",        body.get("position_y"));
+        params.put("move_type",         body.get("move_type"));
+        params.put("status_column",     body.get("status_column"));
+        params.put("status_value",      body.get("status_value"));
+        params.put("target_table",      body.get("target_table"));
+        params.put("field_mappings",    toJsonString(body.get("field_mappings")));
+        params.put("integration_type",  body.get("integration_type"));
+        params.put("integration_config",toJsonString(body.get("integration_config")));
+        params.put("display_config",    toJsonString(body.get("display_config")));
 
         sqlSession.insert("flow.insertFlowStep", params);
         return getFlowStepById(toInt(params.get("id"), 0));
@@ -138,22 +138,22 @@ public class FlowService extends BaseService {
     public Map<String, Object> updateFlowStep(int stepId, Map<String, Object> body) {
         Map<String, Object> params = new HashMap<>();
         params.put("id", stepId);
-        copyIfPresent(body, params, "stepName");
-        copyIfPresent(body, params, "stepOrder");
-        copyIfPresent(body, params, "tableName");
+        copyIfPresent(body, params, "step_name");
+        copyIfPresent(body, params, "step_order");
+        copyIfPresent(body, params, "table_name");
         copyIfPresent(body, params, "color");
-        copyIfPresent(body, params, "positionX");
-        copyIfPresent(body, params, "positionY");
-        copyIfPresent(body, params, "moveType");
-        copyIfPresent(body, params, "statusColumn");
-        copyIfPresent(body, params, "statusValue");
-        copyIfPresent(body, params, "targetTable");
-        copyIfPresent(body, params, "integrationType");
+        copyIfPresent(body, params, "position_x");
+        copyIfPresent(body, params, "position_y");
+        copyIfPresent(body, params, "move_type");
+        copyIfPresent(body, params, "status_column");
+        copyIfPresent(body, params, "status_value");
+        copyIfPresent(body, params, "target_table");
+        copyIfPresent(body, params, "integration_type");
         // JSON 필드
-        if (body.containsKey("conditionJson"))   params.put("conditionJson",   toJsonString(body.get("conditionJson")));
-        if (body.containsKey("fieldMappings"))   params.put("fieldMappings",   toJsonString(body.get("fieldMappings")));
-        if (body.containsKey("integrationConfig")) params.put("integrationConfig", toJsonString(body.get("integrationConfig")));
-        if (body.containsKey("displayConfig"))   params.put("displayConfig",   toJsonString(body.get("displayConfig")));
+        if (body.containsKey("condition_json"))   params.put("condition_json",   toJsonString(body.get("condition_json")));
+        if (body.containsKey("field_mappings"))   params.put("field_mappings",   toJsonString(body.get("field_mappings")));
+        if (body.containsKey("integration_config")) params.put("integration_config", toJsonString(body.get("integration_config")));
+        if (body.containsKey("display_config"))   params.put("display_config",   toJsonString(body.get("display_config")));
 
         int affected = sqlSession.update("flow.updateFlowStep", params);
         if (affected == 0) return null;
@@ -172,7 +172,7 @@ public class FlowService extends BaseService {
     // ══════════════════════════════════════════════════════════
 
     public List<Map<String, Object>> getFlowConnectionList(int flowId) {
-        return sqlSession.selectList("flow.getFlowConnectionList", Map.of("flowId", flowId));
+        return sqlSession.selectList("flow.getFlowConnectionList", Map.of("flow_id", flowId));
     }
 
     public Map<String, Object> getFlowConnectionById(int id) {
@@ -182,9 +182,9 @@ public class FlowService extends BaseService {
     @Transactional
     public Map<String, Object> insertFlowConnection(Map<String, Object> body) {
         Map<String, Object> params = new HashMap<>();
-        params.put("flowDefinitionId", toInt(body.get("flowDefinitionId"), 0));
-        params.put("fromStepId",       toInt(body.get("fromStepId"), 0));
-        params.put("toStepId",         toInt(body.get("toStepId"), 0));
+        params.put("flow_definition_id", toInt(body.get("flow_definition_id"), 0));
+        params.put("from_step_id",       toInt(body.get("from_step_id"), 0));
+        params.put("to_step_id",         toInt(body.get("to_step_id"), 0));
         params.put("label",            body.get("label"));
         sqlSession.insert("flow.insertFlowConnection", params);
         return getFlowConnectionById(toInt(params.get("id"), 0));
@@ -232,7 +232,7 @@ public class FlowService extends BaseService {
 
         if (tableName == null) return Map.of();
 
-        List<Map<String, Object>> rows = sqlSession.selectList("flow.getFlowColumnLabelList", Map.of("tableName", tableName));
+        List<Map<String, Object>> rows = sqlSession.selectList("flow.getFlowColumnLabelList", Map.of("table_name", tableName));
         Map<String, Object> labels = new LinkedHashMap<>();
         for (Map<String, Object> row : rows) {
             String colName = (String) row.get("column_name");
@@ -258,9 +258,9 @@ public class FlowService extends BaseService {
                 continue;
             }
             Map<String, Object> params = new HashMap<>();
-            params.put("tableName",    tableName);
-            params.put("statusColumn", step.get("status_column"));
-            params.put("statusValue",  step.get("status_value"));
+            params.put("table_name",    tableName);
+            params.put("status_column", step.get("status_column"));
+            params.put("status_value",  step.get("status_value"));
             try {
                 Number cntNum = sqlSession.selectOne("flow.getFlowStepDataListCnt", params);
                 int cntVal = cntNum != null ? cntNum.intValue() : 0;
@@ -289,13 +289,13 @@ public class FlowService extends BaseService {
             String col = entry.getKey();
             Object val = entry.getValue();
             Map<String, Object> params = new HashMap<>();
-            params.put("tableName",     info.tableName());
-            params.put("statusColumn",  col);
-            params.put("toStatusValue", val != null ? val.toString() : null);
-            params.put("recordId",      recordId);
+            params.put("table_name",     info.tableName());
+            params.put("status_column",  col);
+            params.put("to_status_value", val != null ? val.toString() : null);
+            params.put("record_id",      recordId);
             sqlSession.update("flow.updateFlowRecordStatus", params);
         }
-        return Map.of("updated", true, "recordId", recordId);
+        return Map.of("updated", true, "record_id", recordId);
     }
 
     // ══════════════════════════════════════════════════════════
@@ -325,22 +325,22 @@ public class FlowService extends BaseService {
 
         if (statusColumn != null && toStatusValue != null) {
             Map<String, Object> updateParams = new HashMap<>();
-            updateParams.put("tableName",     tableName);
-            updateParams.put("statusColumn",  statusColumn);
-            updateParams.put("toStatusValue", toStatusValue);
-            updateParams.put("recordId",      recordId);
+            updateParams.put("table_name",     tableName);
+            updateParams.put("status_column",  statusColumn);
+            updateParams.put("to_status_value", toStatusValue);
+            updateParams.put("record_id",      recordId);
             sqlSession.update("flow.updateFlowRecordStatus", updateParams);
         }
 
         // 감사 로그
         Map<String, Object> logParams = new HashMap<>();
-        logParams.put("flowDefinitionId", flowId);
-        logParams.put("recordId",    recordId);
-        logParams.put("fromStepId",  fromStepId);
-        logParams.put("toStepId",    toStepId);
-        logParams.put("fromStepName", fromStep.get("step_name"));
-        logParams.put("toStepName",  toStep.get("step_name"));
-        logParams.put("movedBy",     userId);
+        logParams.put("flow_definition_id", flowId);
+        logParams.put("record_id",    recordId);
+        logParams.put("from_step_id",  fromStepId);
+        logParams.put("to_step_id",    toStepId);
+        logParams.put("from_step_name", fromStep.get("step_name"));
+        logParams.put("to_step_name",  toStep.get("step_name"));
+        logParams.put("moved_by",     userId);
         logParams.put("note",        note);
         logParams.put("metadata",    null);
         sqlSession.insert("flow.insertFlowAuditLog", logParams);
@@ -374,12 +374,12 @@ public class FlowService extends BaseService {
     // ══════════════════════════════════════════════════════════
 
     public List<Map<String, Object>> getFlowAuditLogListByRecord(int flowId, String recordId) {
-        return sqlSession.selectList("flow.getFlowAuditLogListByRecord", Map.of("flowId", flowId, "recordId", recordId));
+        return sqlSession.selectList("flow.getFlowAuditLogListByRecord", Map.of("flow_id", flowId, "record_id", recordId));
     }
 
     public List<Map<String, Object>> getFlowAuditLogList(int flowId, int limit) {
         Map<String, Object> params = new HashMap<>();
-        params.put("flowId", flowId);
+        params.put("flow_id", flowId);
         params.put("limit",  limit);
         return sqlSession.selectList("flow.getFlowAuditLogList", params);
     }
@@ -424,9 +424,9 @@ public class FlowService extends BaseService {
     private record StepTableInfo(String tableName, String statusColumn, String statusValue) {
         Map<String, Object> toParams() {
             Map<String, Object> p = new HashMap<>();
-            p.put("tableName",    tableName);
-            p.put("statusColumn", statusColumn);
-            p.put("statusValue",  statusValue);
+            p.put("table_name",    tableName);
+            p.put("status_column", statusColumn);
+            p.put("status_value",  statusValue);
             return p;
         }
     }
diff --git a/backend-spring/src/main/java/com/erp/service/LayoutService.java b/backend-spring/src/main/java/com/erp/service/LayoutService.java
index b7ec06d6..bee1208b 100644
--- a/backend-spring/src/main/java/com/erp/service/LayoutService.java
+++ b/backend-spring/src/main/java/com/erp/service/LayoutService.java
@@ -34,14 +34,14 @@ public class LayoutService extends BaseService {
         int size = toInt(params.getOrDefault("size", 20), 20);
 
         // includePublic: String "true"/"false" → Boolean
-        Object ipRaw = params.get("includePublic");
+        Object ipRaw = params.get("include_public");
         boolean includePublic = ipRaw == null || "true".equalsIgnoreCase(ipRaw.toString());
 
         params.put("page", page);
         params.put("size", size);
         params.put("limit", size);
         params.put("offset", (page - 1) * size);
-        params.put("includePublic", includePublic);
+        params.put("include_public", includePublic);
 
         List<Map<String, Object>> data  = sqlSession.selectList("layout.selectLayouts", params);
         int total = sqlSession.selectOne("layout.countLayouts", params);
@@ -51,7 +51,7 @@ public class LayoutService extends BaseService {
         result.put("total", total);
         result.put("page", page);
         result.put("size", size);
-        result.put("totalPages", (int) Math.ceil((double) total / size));
+        result.put("total_pages", (int) Math.ceil((double) total / size));
         return result;
     }
 
@@ -61,8 +61,8 @@ public class LayoutService extends BaseService {
 
     public Map<String, Object> getLayoutById(String layoutCode, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("layoutCode", layoutCode);
-        params.put("companyCode", companyCode);
+        params.put("layout_code", layoutCode);
+        params.put("company_code", companyCode);
         return sqlSession.selectOne("layout.selectLayoutByCode", params);
     }
 
@@ -74,23 +74,23 @@ public class LayoutService extends BaseService {
     public Map<String, Object> createLayout(Map<String, Object> body,
                                             String companyCode,
                                             String userId) {
-        String layoutType = (String) body.get("layoutType");
+        String layoutType = (String) body.get("layout_type");
         String layoutCode = generateLayoutCode(layoutType, companyCode);
 
         Map<String, Object> params = new HashMap<>();
-        params.put("layoutCode",    layoutCode);
-        params.put("companyCode",   companyCode);
-        params.put("userId",        userId);
-        params.put("layoutName",    body.get("layoutName"));
-        params.put("layoutNameEng", body.get("layoutNameEng"));
+        params.put("layout_code",    layoutCode);
+        params.put("company_code",   companyCode);
+        params.put("user_id",        userId);
+        params.put("layout_name",    body.get("layout_name"));
+        params.put("layout_name_eng", body.get("layout_name_eng"));
         params.put("description",   body.get("description"));
-        params.put("layoutType",    layoutType);
+        params.put("layout_type",    layoutType);
         params.put("category",      body.get("category"));
-        params.put("iconName",      body.get("iconName"));
-        params.put("defaultSize",   toJsonString(body.get("defaultSize")));
-        params.put("layoutConfig",  toJsonString(body.get("layoutConfig")));
-        params.put("zonesConfig",   toJsonString(body.get("zonesConfig")));
-        params.put("isPublic",      toBooleanYN(body.get("isPublic")));
+        params.put("icon_name",      body.get("icon_name"));
+        params.put("default_size",   toJsonString(body.get("default_size")));
+        params.put("layout_config",  toJsonString(body.get("layout_config")));
+        params.put("zones_config",   toJsonString(body.get("zones_config")));
+        params.put("is_public",      toBooleanYN(body.get("is_public")));
 
         sqlSession.insert("layout.insertLayout", params);
 
@@ -108,32 +108,32 @@ public class LayoutService extends BaseService {
                                             String userId) {
         // 소유권 확인 (is_public 무관, 자사 레이아웃만 수정 가능)
         Map<String, Object> checkParams = new HashMap<>();
-        checkParams.put("layoutCode",  layoutCode);
-        checkParams.put("companyCode", companyCode);
+        checkParams.put("layout_code",  layoutCode);
+        checkParams.put("company_code", companyCode);
         if (sqlSession.selectOne("layout.selectLayoutByCodeAndCompany", checkParams) == null) {
             return null;  // Controller 에서 404 처리
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("layoutCode",  layoutCode);
-        params.put("companyCode", companyCode);
-        params.put("userId",      userId);
+        params.put("layout_code",  layoutCode);
+        params.put("company_code", companyCode);
+        params.put("user_id",      userId);
 
         // 존재하는 필드만 params 에 추가
-        copyIfPresent(body, params, "layoutName");
-        copyIfPresent(body, params, "layoutNameEng");
+        copyIfPresent(body, params, "layout_name");
+        copyIfPresent(body, params, "layout_name_eng");
         copyIfPresent(body, params, "description");
-        copyIfPresent(body, params, "layoutType");
+        copyIfPresent(body, params, "layout_type");
         copyIfPresent(body, params, "category");
-        copyIfPresent(body, params, "iconName");
+        copyIfPresent(body, params, "icon_name");
 
         // JSON 필드는 직렬화 후 추가
-        if (body.containsKey("defaultSize"))  params.put("defaultSize",  toJsonString(body.get("defaultSize")));
-        if (body.containsKey("layoutConfig")) params.put("layoutConfig", toJsonString(body.get("layoutConfig")));
-        if (body.containsKey("zonesConfig"))  params.put("zonesConfig",  toJsonString(body.get("zonesConfig")));
+        if (body.containsKey("default_size"))  params.put("default_size",  toJsonString(body.get("default_size")));
+        if (body.containsKey("layout_config")) params.put("layout_config", toJsonString(body.get("layout_config")));
+        if (body.containsKey("zones_config"))  params.put("zones_config",  toJsonString(body.get("zones_config")));
 
         // boolean → Y/N
-        if (body.containsKey("isPublic")) params.put("isPublic", toBooleanYN(body.get("isPublic")));
+        if (body.containsKey("is_public")) params.put("is_public", toBooleanYN(body.get("is_public")));
 
         sqlSession.update("layout.updateLayout", params);
         return getLayoutById(layoutCode, companyCode);
@@ -146,16 +146,16 @@ public class LayoutService extends BaseService {
     @Transactional
     public void deleteLayout(String layoutCode, String companyCode, String userId) {
         Map<String, Object> checkParams = new HashMap<>();
-        checkParams.put("layoutCode",  layoutCode);
-        checkParams.put("companyCode", companyCode);
+        checkParams.put("layout_code",  layoutCode);
+        checkParams.put("company_code", companyCode);
         if (sqlSession.selectOne("layout.selectLayoutByCodeAndCompany", checkParams) == null) {
             throw new IllegalArgumentException("레이아웃을 찾을 수 없거나 삭제 권한이 없습니다.");
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("layoutCode",  layoutCode);
-        params.put("companyCode", companyCode);
-        params.put("userId",      userId);
+        params.put("layout_code",  layoutCode);
+        params.put("company_code", companyCode);
+        params.put("user_id",      userId);
         sqlSession.update("layout.softDeleteLayout", params);
     }
 
@@ -175,20 +175,20 @@ public class LayoutService extends BaseService {
 
         // DB 결과는 snake_case → createLayout 이 요구하는 camelCase 로 변환
         Map<String, Object> body = new HashMap<>();
-        body.put("layoutName",    newName);
-        body.put("layoutType",    original.get("layout_type"));
+        body.put("layout_name",    newName);
+        body.put("layout_type",    original.get("layout_type"));
         body.put("category",      original.get("category"));
         body.put("description",   original.get("description"));
-        body.put("iconName",      original.get("icon_name"));
-        body.put("defaultSize",   original.get("default_size"));
-        body.put("layoutConfig",  original.get("layout_config"));
-        body.put("zonesConfig",   original.get("zones_config"));
-        body.put("isPublic",      "N");
+        body.put("icon_name",      original.get("icon_name"));
+        body.put("default_size",   original.get("default_size"));
+        body.put("layout_config",  original.get("layout_config"));
+        body.put("zones_config",   original.get("zones_config"));
+        body.put("is_public",      "N");
 
         // layoutNameEng 에 "Copy" 접미사
         Object engName = original.get("layout_name_eng");
         if (engName != null) {
-            body.put("layoutNameEng", engName + " Copy");
+            body.put("layout_name_eng", engName + " Copy");
         }
 
         return createLayout(body, companyCode, userId);
@@ -200,7 +200,7 @@ public class LayoutService extends BaseService {
 
     public Map<String, Object> getLayoutCountsByCategory(String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
 
         List<Map<String, Object>> rows = sqlSession.selectList(
                 "layout.selectCountsByCategory", params);
diff --git a/backend-spring/src/main/java/com/erp/service/MailAccountFileService.java b/backend-spring/src/main/java/com/erp/service/MailAccountFileService.java
index 5c9540b3..ceaa4374 100644
--- a/backend-spring/src/main/java/com/erp/service/MailAccountFileService.java
+++ b/backend-spring/src/main/java/com/erp/service/MailAccountFileService.java
@@ -19,34 +19,34 @@ public class MailAccountFileService extends BaseService {
     public Map<String, Object> getMailAccountFileList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getMailAccountFileListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getMailAccountFileList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_mail_account_file_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_mail_account_file_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getMailAccountFileInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getMailAccountFileInfo", params);
+        return sqlSession.selectOne(NS + "get_mail_account_file_info", params);
     }
 
     @Transactional
     public Map<String, Object> insertMailAccountFile(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.insert(NS + "insertMailAccountFile", params);
+        sqlSession.insert(NS + "insert_mail_account_file", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateMailAccountFile(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updateMailAccountFile", params);
+        sqlSession.update(NS + "update_mail_account_file", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteMailAccountFile(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deleteMailAccountFile", params);
+        sqlSession.delete(NS + "delete_mail_account_file", params);
         return params;
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/MailReceiveBasicService.java b/backend-spring/src/main/java/com/erp/service/MailReceiveBasicService.java
index 8df81a63..bee72b28 100644
--- a/backend-spring/src/main/java/com/erp/service/MailReceiveBasicService.java
+++ b/backend-spring/src/main/java/com/erp/service/MailReceiveBasicService.java
@@ -22,43 +22,43 @@ public class MailReceiveBasicService extends BaseService {
     public Map<String, Object> getMailReceiveBasicList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getMailReceiveBasicListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getMailReceiveBasicList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_mail_receive_basic_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_mail_receive_basic_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public int getMailReceiveBasicTodayCount(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getMailReceiveBasicTodayCount", params);
+        return sqlSession.selectOne(NS + "get_mail_receive_basic_today_count", params);
     }
 
     public Map<String, Object> getMailReceiveBasicInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getMailReceiveBasicInfo", params);
+        return sqlSession.selectOne(NS + "get_mail_receive_basic_info", params);
     }
 
     @Transactional
     public Map<String, Object> markMailReceiveBasicAsRead(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updateMailReceiveBasicAsRead", params);
+        sqlSession.update(NS + "update_mail_receive_basic_as_read", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteMailReceiveBasic(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "deleteMailReceiveBasic", params);
+        sqlSession.update(NS + "delete_mail_receive_basic", params);
         return params;
     }
 
     public Map<String, Object> getMailReceiveBasicAttachment(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getMailReceiveBasicAttachment", params);
+        return sqlSession.selectOne(NS + "get_mail_receive_basic_attachment", params);
     }
 
     public Map<String, Object> testMailReceiveBasicImapConnection(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> account = sqlSession.selectOne(NS + "getMailReceiveBasicAccountInfo", params);
+        Map<String, Object> account = sqlSession.selectOne(NS + "get_mail_receive_basic_account_info", params);
         if (account == null) {
             Map<String, Object> result = new HashMap<>();
             result.put("success", false);
diff --git a/backend-spring/src/main/java/com/erp/service/MailSendSimpleService.java b/backend-spring/src/main/java/com/erp/service/MailSendSimpleService.java
index d6ccd961..51ae3017 100644
--- a/backend-spring/src/main/java/com/erp/service/MailSendSimpleService.java
+++ b/backend-spring/src/main/java/com/erp/service/MailSendSimpleService.java
@@ -49,25 +49,25 @@ public class MailSendSimpleService extends BaseService {
      */
     @SuppressWarnings("unchecked")
     public Map<String, Object> sendMail(Map<String, Object> params) {
-        String accountId   = str(params.get("accountId"));
-        String companyCode = str(params.get("companyCode"));
-        String templateId  = str(params.get("templateId"));
+        String accountId   = str(params.get("account_id"));
+        String companyCode = str(params.get("company_code"));
+        String templateId  = str(params.get("template_id"));
         String subject     = str(params.get("subject"));
-        String customHtml  = str(params.get("customHtml"));
+        String customHtml  = str(params.get("custom_html"));
 
         // JSON 문자열 → List 파싱 (multipart form-data의 JSON 문자열 필드)
         List<String> to  = parseJsonList(str(params.get("to")));
         List<String> cc  = parseJsonList(str(params.get("cc")));
         List<String> bcc = parseJsonList(str(params.get("bcc")));
         Map<String, String> variables = parseJsonMap(str(params.get("variables")));
-        List<Object> modifiedComponents = parseJsonObjectList(str(params.get("modifiedTemplateComponents")));
+        List<Object> modifiedComponents = parseJsonObjectList(str(params.get("modified_template_components")));
         List<MultipartFile> attachments = (List<MultipartFile>) params.get("attachments");
 
         // 계정 조회
         Map<String, Object> accountParams = new HashMap<>();
-        accountParams.put("accountId", accountId);
-        accountParams.put("companyCode", companyCode);
-        Map<String, Object> account = sqlSession.selectOne(NS_SEND + "getMailAccount", accountParams);
+        accountParams.put("account_id", accountId);
+        accountParams.put("company_code", companyCode);
+        Map<String, Object> account = sqlSession.selectOne(NS_SEND + "get_mail_account", accountParams);
         if (account == null) {
             throw new IllegalArgumentException("메일 계정을 찾을 수 없습니다.");
         }
@@ -81,8 +81,8 @@ public class MailSendSimpleService extends BaseService {
         if (templateId != null && !templateId.isBlank()) {
             Map<String, Object> tplParams = new HashMap<>();
             tplParams.put("id", templateId);
-            tplParams.put("companyCode", companyCode);
-            Map<String, Object> template = sqlSession.selectOne(NS_TEMPLATE + "getMailTemplateFileInfo", tplParams);
+            tplParams.put("company_code", companyCode);
+            Map<String, Object> template = sqlSession.selectOne(NS_TEMPLATE + "get_mail_template_file_info", tplParams);
             if (template == null) throw new IllegalArgumentException("템플릿을 찾을 수 없습니다.");
             templateName = str(template.get("name"));
             if (modifiedComponents != null && !modifiedComponents.isEmpty()) {
@@ -124,7 +124,7 @@ public class MailSendSimpleService extends BaseService {
 
             // 첨부파일
             if (attachments != null) {
-                List<String> parsedFileNames = parseJsonList(str(params.get("fileNames")));
+                List<String> parsedFileNames = parseJsonList(str(params.get("file_names")));
                 for (int i = 0; i < attachments.size(); i++) {
                     MultipartFile file = attachments.get(i);
                     String filename = (i < parsedFileNames.size() && !parsedFileNames.get(i).isBlank())
@@ -156,7 +156,7 @@ public class MailSendSimpleService extends BaseService {
         if (success) {
             Map<String, Object> result = new LinkedHashMap<>();
             result.put("success", true);
-            result.put("messageId", messageId);
+            result.put("message_id", messageId);
             result.put("accepted", accepted);
             result.put("rejected", rejected);
             return result;
@@ -173,10 +173,10 @@ public class MailSendSimpleService extends BaseService {
      */
     @SuppressWarnings("unchecked")
     public Map<String, Object> sendBulkMail(Map<String, Object> body) {
-        String accountId   = str(body.get("accountId"));
-        String companyCode = str(body.get("companyCode"));
-        String templateId  = str(body.get("templateId"));
-        String customHtml  = str(body.get("customHtml"));
+        String accountId   = str(body.get("account_id"));
+        String companyCode = str(body.get("company_code"));
+        String templateId  = str(body.get("template_id"));
+        String customHtml  = str(body.get("custom_html"));
         String subject     = str(body.get("subject"));
 
         List<Map<String, Object>> recipients;
@@ -203,10 +203,10 @@ public class MailSendSimpleService extends BaseService {
                     ? (Map<String, String>) recipient.get("variables") : Collections.emptyMap();
 
             Map<String, Object> sendParams = new LinkedHashMap<>();
-            sendParams.put("companyCode", companyCode);
-            sendParams.put("accountId",  accountId);
-            sendParams.put("templateId", templateId);
-            sendParams.put("customHtml", customHtml);
+            sendParams.put("company_code", companyCode);
+            sendParams.put("account_id",  accountId);
+            sendParams.put("template_id", templateId);
+            sendParams.put("custom_html", customHtml);
             sendParams.put("to", "[\"" + email + "\"]");
             sendParams.put("subject", subject);
             try {
@@ -218,7 +218,7 @@ public class MailSendSimpleService extends BaseService {
             try {
                 Map<String, Object> r = sendMail(sendParams);
                 item.put("success",   true);
-                item.put("messageId", r.get("messageId"));
+                item.put("message_id", r.get("message_id"));
                 successCount++;
             } catch (Exception e) {
                 item.put("success", false);
@@ -249,13 +249,13 @@ public class MailSendSimpleService extends BaseService {
      * POST /test-connection
      */
     public Map<String, Object> testConnection(Map<String, Object> body) {
-        String accountId   = str(body.get("accountId"));
-        String companyCode = str(body.get("companyCode"));
+        String accountId   = str(body.get("account_id"));
+        String companyCode = str(body.get("company_code"));
 
         Map<String, Object> params = new HashMap<>();
-        params.put("accountId",   accountId);
-        params.put("companyCode", companyCode);
-        Map<String, Object> account = sqlSession.selectOne(NS_SEND + "getMailAccount", params);
+        params.put("account_id",   accountId);
+        params.put("company_code", companyCode);
+        Map<String, Object> account = sqlSession.selectOne(NS_SEND + "get_mail_account", params);
         if (account == null) {
             Map<String, Object> r = new LinkedHashMap<>();
             r.put("success", false);
@@ -322,26 +322,26 @@ public class MailSendSimpleService extends BaseService {
                               List<String> accepted, List<String> rejected, String errorMsg) {
         try {
             Map<String, Object> h = new LinkedHashMap<>();
-            h.put("companyCode",   companyCode);
-            h.put("accountId",     account.get("id"));
-            h.put("accountName",   account.get("name"));
-            h.put("accountEmail",  account.get("email"));
-            h.put("toAddresses",   String.join(",", to));
-            h.put("ccAddresses",   cc.isEmpty()  ? null : String.join(",", cc));
-            h.put("bccAddresses",  bcc.isEmpty() ? null : String.join(",", bcc));
+            h.put("company_code",   companyCode);
+            h.put("account_id",     account.get("id"));
+            h.put("account_name",   account.get("name"));
+            h.put("account_email",  account.get("email"));
+            h.put("to_addresses",   String.join(",", to));
+            h.put("cc_addresses",   cc.isEmpty()  ? null : String.join(",", cc));
+            h.put("bcc_addresses",  bcc.isEmpty() ? null : String.join(",", bcc));
             h.put("subject",       subject);
-            h.put("htmlContent",   htmlContent);
-            h.put("templateId",    templateId);
-            h.put("templateName",  templateName);
+            h.put("html_content",   htmlContent);
+            h.put("template_id",    templateId);
+            h.put("template_name",  templateName);
             h.put("status",        status);
-            h.put("messageId",     messageId);
+            h.put("message_id",     messageId);
             h.put("accepted",      accepted.isEmpty() ? null : String.join(",", accepted));
             h.put("rejected",      rejected.isEmpty() ? null : String.join(",", rejected));
-            h.put("errorMessage",  errorMsg);
+            h.put("error_message",  errorMsg);
             if (attachments != null && !attachments.isEmpty()) {
-                h.put("attachmentCount", attachments.size());
+                h.put("attachment_count", attachments.size());
             }
-            sqlSession.insert(NS_HISTORY + "insertMailSentHistory", h);
+            sqlSession.insert(NS_HISTORY + "insert_mail_sent_history", h);
         } catch (Exception e) {
             log.warn("발송 이력 저장 실패 (무시됨): {}", e.getMessage());
         }
@@ -383,15 +383,15 @@ public class MailSendSimpleService extends BaseService {
                     String content = replaceVariables(str(comp.get("content")), variables);
                     html.append("<div style=\"margin:0 0 20px 0;color:")
                             .append(str(comp.getOrDefault("color", "#333")))
-                            .append(";font-size:").append(str(comp.getOrDefault("fontSize", "15px")))
+                            .append(";font-size:").append(str(comp.getOrDefault("font_size", "15px")))
                             .append(";line-height:1.6;\">").append(content != null ? content : "").append("</div>\n");
                 }
                 case "button" -> {
                     String btnText = replaceVariables(str(comp.get("text")), variables);
                     Object styles  = comp.get("styles");
                     Map<String, Object> stylesMap = styles instanceof Map ? (Map<String, Object>) styles : Collections.emptyMap();
-                    String bgColor   = str(stylesMap.getOrDefault("backgroundColor", comp.getOrDefault("backgroundColor", "#007bff")));
-                    String textColor = str(stylesMap.getOrDefault("color", comp.getOrDefault("textColor", "#fff")));
+                    String bgColor   = str(stylesMap.getOrDefault("background_color", comp.getOrDefault("background_color", "#007bff")));
+                    String textColor = str(stylesMap.getOrDefault("color", comp.getOrDefault("text_color", "#fff")));
                     html.append("<div style=\"margin:30px 0;\"><a href=\"")
                             .append(str(comp.getOrDefault("url", "#")))
                             .append("\" style=\"display:inline-block;padding:14px 28px;background-color:")
@@ -410,8 +410,8 @@ public class MailSendSimpleService extends BaseService {
                     html.append("<hr style=\"border:none;border-top:1px solid #e5e7eb;margin:20px 0;\">\n");
                 case "footer" -> {
                     html.append("<div style=\"text-align:center;padding:24px 16px;background:#f9fafb;border-top:1px solid #e5e7eb;font-size:14px;color:#6b7280;\">");
-                    if (comp.get("companyName") != null)
-                        html.append("<div style=\"font-weight:600;\">").append(str(comp.get("companyName"))).append("</div>");
+                    if (comp.get("company_name") != null)
+                        html.append("<div style=\"font-weight:600;\">").append(str(comp.get("company_name"))).append("</div>");
                     if (comp.get("copyright") != null)
                         html.append("<div style=\"font-size:12px;\">").append(str(comp.get("copyright"))).append("</div>");
                     html.append("</div>\n");
diff --git a/backend-spring/src/main/java/com/erp/service/MailSentHistoryService.java b/backend-spring/src/main/java/com/erp/service/MailSentHistoryService.java
index 18250bd8..d98f60b3 100644
--- a/backend-spring/src/main/java/com/erp/service/MailSentHistoryService.java
+++ b/backend-spring/src/main/java/com/erp/service/MailSentHistoryService.java
@@ -19,32 +19,32 @@ public class MailSentHistoryService extends BaseService {
 
     public Map<String, Object> getMailSentHistoryList(Map<String, Object> params) {
         // String "true"/"false" → Boolean 변환 (RequestParam은 String으로 들어옴)
-        params.put("includeDeleted",
-                "true".equals(String.valueOf(params.getOrDefault("includeDeleted", "false"))));
-        params.put("onlyDeleted",
-                "true".equals(String.valueOf(params.getOrDefault("onlyDeleted", "false"))));
+        params.put("include_deleted",
+                "true".equals(String.valueOf(params.getOrDefault("include_deleted", "false"))));
+        params.put("only_deleted",
+                "true".equals(String.valueOf(params.getOrDefault("only_deleted", "false"))));
 
         // sortBy → SQL 컬럼명 매핑 (동적 ORDER BY 인젝션 방지)
-        String sortBy = (String) params.getOrDefault("sortBy", "sentAt");
+        String sortBy = (String) params.getOrDefault("sort_by", "sent_at");
         String sortColumn = switch (sortBy) {
             case "subject"   -> "subject";
-            case "updatedAt" -> "updated_date";
+            case "updated_at" -> "updated_date";
             default          -> "sent_at";
         };
-        params.put("sortColumn", sortColumn);
-        String sortOrder = (String) params.getOrDefault("sortOrder", "desc");
-        params.put("sortDirection", "asc".equalsIgnoreCase(sortOrder) ? "ASC" : "DESC");
+        params.put("sort_column", sortColumn);
+        String sortOrder = (String) params.getOrDefault("sort_order", "desc");
+        params.put("sort_direction", "asc".equalsIgnoreCase(sortOrder) ? "ASC" : "DESC");
 
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getMailSentHistoryListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getMailSentHistoryList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_mail_sent_history_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_mail_sent_history_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getMailSentHistoryInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getMailSentHistoryInfo", params);
+        return sqlSession.selectOne(NS + "get_mail_sent_history_info", params);
     }
 
     @Transactional
@@ -55,49 +55,49 @@ public class MailSentHistoryService extends BaseService {
             params.put("id", id);
         }
         params.put("status", "draft");
-        params.put("isDraft", true);
-        if (params.get("sentAt") == null) {
-            params.put("sentAt", new Timestamp(System.currentTimeMillis()));
+        params.put("is_draft", true);
+        if (params.get("sent_at") == null) {
+            params.put("sent_at", new Timestamp(System.currentTimeMillis()));
         }
 
         Map<String, Object> lookupParams = new HashMap<>();
         lookupParams.put("id", id);
-        lookupParams.put("companyCode", params.get("companyCode"));
-        Map<String, Object> existing = sqlSession.selectOne(NS + "getMailSentHistoryInfo", lookupParams);
+        lookupParams.put("company_code", params.get("company_code"));
+        Map<String, Object> existing = sqlSession.selectOne(NS + "get_mail_sent_history_info", lookupParams);
 
         if (existing != null) {
-            sqlSession.update(NS + "updateMailSentHistory", params);
+            sqlSession.update(NS + "update_mail_sent_history", params);
         } else {
-            sqlSession.insert(NS + "insertMailSentHistory", params);
+            sqlSession.insert(NS + "insert_mail_sent_history", params);
         }
-        return sqlSession.selectOne(NS + "getMailSentHistoryInfo", lookupParams);
+        return sqlSession.selectOne(NS + "get_mail_sent_history_info", lookupParams);
     }
 
     @Transactional
     public Map<String, Object> updateMailSentHistoryDraft(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updateMailSentHistory", params);
-        return sqlSession.selectOne(NS + "getMailSentHistoryInfo", params);
+        sqlSession.update(NS + "update_mail_sent_history", params);
+        return sqlSession.selectOne(NS + "get_mail_sent_history_info", params);
     }
 
     @Transactional
     public Map<String, Object> deleteMailSentHistory(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "softDeleteMailSentHistory", params);
+        sqlSession.update(NS + "soft_delete_mail_sent_history", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> permanentlyDeleteMailSentHistory(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "permanentDeleteMailSentHistory", params);
+        sqlSession.delete(NS + "permanent_delete_mail_sent_history", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> restoreMailSentHistory(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "restoreMailSentHistory", params);
+        sqlSession.update(NS + "restore_mail_sent_history", params);
         return params;
     }
 
@@ -106,10 +106,10 @@ public class MailSentHistoryService extends BaseService {
         @SuppressWarnings("unchecked")
         List<Object> ids = (List<Object>) params.get("ids");
         if (ids == null || ids.isEmpty()) {
-            return Map.of("successCount", 0, "failCount", 0);
+            return Map.of("success_count", 0, "fail_count", 0);
         }
-        int successCount = sqlSession.update(NS + "bulkSoftDeleteMailSentHistory", params);
-        return Map.of("successCount", successCount, "failCount", Math.max(0, ids.size() - successCount));
+        int successCount = sqlSession.update(NS + "bulk_soft_delete_mail_sent_history", params);
+        return Map.of("success_count", successCount, "fail_count", Math.max(0, ids.size() - successCount));
     }
 
     @Transactional
@@ -117,10 +117,10 @@ public class MailSentHistoryService extends BaseService {
         @SuppressWarnings("unchecked")
         List<Object> ids = (List<Object>) params.get("ids");
         if (ids == null || ids.isEmpty()) {
-            return Map.of("successCount", 0, "failCount", 0);
+            return Map.of("success_count", 0, "fail_count", 0);
         }
-        int successCount = sqlSession.delete(NS + "bulkPermanentDeleteMailSentHistory", params);
-        return Map.of("successCount", successCount, "failCount", Math.max(0, ids.size() - successCount));
+        int successCount = sqlSession.delete(NS + "bulk_permanent_delete_mail_sent_history", params);
+        return Map.of("success_count", successCount, "fail_count", Math.max(0, ids.size() - successCount));
     }
 
     @Transactional
@@ -128,21 +128,21 @@ public class MailSentHistoryService extends BaseService {
         @SuppressWarnings("unchecked")
         List<Object> ids = (List<Object>) params.get("ids");
         if (ids == null || ids.isEmpty()) {
-            return Map.of("successCount", 0, "failCount", 0);
+            return Map.of("success_count", 0, "fail_count", 0);
         }
-        int successCount = sqlSession.update(NS + "bulkRestoreMailSentHistory", params);
-        return Map.of("successCount", successCount, "failCount", Math.max(0, ids.size() - successCount));
+        int successCount = sqlSession.update(NS + "bulk_restore_mail_sent_history", params);
+        return Map.of("success_count", successCount, "fail_count", Math.max(0, ids.size() - successCount));
     }
 
     public Map<String, Object> getMailSentHistoryStatistics(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> stats = sqlSession.selectOne(NS + "getMailSentHistoryStatistics", params);
+        Map<String, Object> stats = sqlSession.selectOne(NS + "get_mail_sent_history_statistics", params);
         if (stats == null) stats = new HashMap<>();
 
         long totalSent    = toLong(stats.get("total_sent"));
         long successCount = toLong(stats.get("success_count"));
         long successRate  = totalSent > 0 ? Math.round((double) successCount / totalSent * 100) : 0;
-        stats.put("successRate", successRate);
+        stats.put("success_rate", successRate);
         return stats;
     }
 
@@ -152,10 +152,10 @@ public class MailSentHistoryService extends BaseService {
         if (params.get("id") == null) {
             params.put("id", UUID.randomUUID().toString());
         }
-        if (params.get("sentAt") == null) {
-            params.put("sentAt", new Timestamp(System.currentTimeMillis()));
+        if (params.get("sent_at") == null) {
+            params.put("sent_at", new Timestamp(System.currentTimeMillis()));
         }
-        sqlSession.insert(NS + "insertMailSentHistory", params);
+        sqlSession.insert(NS + "insert_mail_sent_history", params);
         return params;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/MailTemplateFileService.java b/backend-spring/src/main/java/com/erp/service/MailTemplateFileService.java
index de3c79e4..b60843ba 100644
--- a/backend-spring/src/main/java/com/erp/service/MailTemplateFileService.java
+++ b/backend-spring/src/main/java/com/erp/service/MailTemplateFileService.java
@@ -24,21 +24,21 @@ public class MailTemplateFileService extends BaseService {
     public Map<String, Object> getMailTemplateFileList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getMailTemplateFileListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getMailTemplateFileList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_mail_template_file_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_mail_template_file_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getMailTemplateFileInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getMailTemplateFileInfo", params);
+        return sqlSession.selectOne(NS + "get_mail_template_file_info", params);
     }
 
     @Transactional
     public Map<String, Object> insertMailTemplateFile(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         serializeJsonFields(params);
-        sqlSession.insert(NS + "insertMailTemplateFile", params);
+        sqlSession.insert(NS + "insert_mail_template_file", params);
         return params;
     }
 
@@ -46,21 +46,21 @@ public class MailTemplateFileService extends BaseService {
     public Map<String, Object> updateMailTemplateFile(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         serializeJsonFields(params);
-        sqlSession.update(NS + "updateMailTemplateFile", params);
+        sqlSession.update(NS + "update_mail_template_file", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteMailTemplateFile(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deleteMailTemplateFile", params);
+        sqlSession.delete(NS + "delete_mail_template_file", params);
         return params;
     }
 
     @SuppressWarnings("unchecked")
     public Map<String, Object> previewMailTemplateFile(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> template = sqlSession.selectOne(NS + "getMailTemplateFileInfo", params);
+        Map<String, Object> template = sqlSession.selectOne(NS + "get_mail_template_file_info", params);
         if (template == null) {
             return Collections.emptyMap();
         }
@@ -69,7 +69,7 @@ public class MailTemplateFileService extends BaseService {
         String renderedHtml = renderTemplateToHtml(componentsJson);
         String subject = (String) template.get("subject");
 
-        Map<String, Object> sampleData = (Map<String, Object>) params.get("sampleData");
+        Map<String, Object> sampleData = (Map<String, Object>) params.get("sample_data");
         if (sampleData != null && !sampleData.isEmpty()) {
             renderedHtml = replaceVariables(renderedHtml, sampleData);
             subject = replaceVariables(subject, sampleData);
@@ -78,12 +78,12 @@ public class MailTemplateFileService extends BaseService {
         Map<String, Object> result = new HashMap<>();
         result.put("subject", subject);
         result.put("html", renderedHtml);
-        result.put("sampleData", sampleData);
+        result.put("sample_data", sampleData);
         return result;
     }
 
     private void serializeJsonFields(Map<String, Object> params) {
-        for (String field : new String[]{"components", "queryConfig", "recipientConfig"}) {
+        for (String field : new String[]{"components", "query_config", "recipient_config"}) {
             Object val = params.get(field);
             if (val != null && !(val instanceof String)) {
                 try {
@@ -115,7 +115,7 @@ public class MailTemplateFileService extends BaseService {
                 case "text" -> html.append("<div style=\"").append(stylesStr).append("\">")
                         .append(comp.getOrDefault("content", "")).append("</div>");
                 case "button" -> {
-                    String bg = rawStyles.containsKey("backgroundColor") ? String.valueOf(rawStyles.get("backgroundColor")) : "#007bff";
+                    String bg = rawStyles.containsKey("background_color") ? String.valueOf(rawStyles.get("background_color")) : "#007bff";
                     String color = rawStyles.containsKey("color") ? String.valueOf(rawStyles.get("color")) : "#fff";
                     html.append("<div style=\"text-align: center; ").append(stylesStr).append("\">")
                         .append("<a href=\"").append(comp.getOrDefault("url", "#")).append("\" ")
@@ -129,10 +129,10 @@ public class MailTemplateFileService extends BaseService {
                         .append("<img src=\"").append(comp.getOrDefault("src", "")).append("\" alt=\"\" style=\"max-width: 100%; height: auto;\"/></div>");
                 case "spacer" -> html.append("<div style=\"height: ").append(comp.getOrDefault("height", 20)).append("px;\"></div>");
                 case "header" -> {
-                    String headerBg = (String) comp.getOrDefault("headerBgColor", "#f8f9fa");
-                    String logoSrc = (String) comp.get("logoSrc");
-                    String brandName = String.valueOf(comp.getOrDefault("brandName", ""));
-                    String sendDate = String.valueOf(comp.getOrDefault("sendDate", ""));
+                    String headerBg = (String) comp.getOrDefault("header_bg_color", "#f8f9fa");
+                    String logoSrc = (String) comp.get("logo_src");
+                    String brandName = String.valueOf(comp.getOrDefault("brand_name", ""));
+                    String sendDate = String.valueOf(comp.getOrDefault("send_date", ""));
                     html.append("<div style=\"padding: 20px; background-color: ").append(headerBg)
                         .append("; border-radius: 8px; margin-bottom: 20px;\">")
                         .append("<table style=\"width: 100%;\"><tr><td style=\"vertical-align: middle;\">")
@@ -141,8 +141,8 @@ public class MailTemplateFileService extends BaseService {
                         .append("</td><td style=\"text-align: right; color: #6b7280; font-size: 14px;\">")
                         .append(sendDate).append("</td></tr></table></div>");
                 }
-                case "infoTable" -> {
-                    String tableTitle = (String) comp.get("tableTitle");
+                case "info_table" -> {
+                    String tableTitle = (String) comp.get("table_title");
                     List<Map<String, Object>> rows = comp.get("rows") instanceof List
                             ? (List<Map<String, Object>>) comp.get("rows") : new ArrayList<>();
                     html.append("<div style=\"border: 1px solid #e5e7eb; border-radius: 8px; overflow: hidden; margin: 16px 0;\">")
@@ -156,9 +156,9 @@ public class MailTemplateFileService extends BaseService {
                     }
                     html.append("</table></div>");
                 }
-                case "alertBox" -> {
-                    String alertType = (String) comp.getOrDefault("alertType", "info");
-                    String alertTitle = (String) comp.get("alertTitle");
+                case "alert_box" -> {
+                    String alertType = (String) comp.getOrDefault("alert_type", "info");
+                    String alertTitle = (String) comp.get("alert_title");
                     String content = String.valueOf(comp.getOrDefault("content", ""));
                     Map<String, String> bgMap = Map.of("info", "#eff6ff", "warning", "#fffbeb", "danger", "#fef2f2", "success", "#ecfdf5");
                     Map<String, String> borderMap = Map.of("info", "#3b82f6", "warning", "#f59e0b", "danger", "#ef4444", "success", "#10b981");
@@ -171,9 +171,9 @@ public class MailTemplateFileService extends BaseService {
                 }
                 case "divider" -> html.append("<hr style=\"border: none; border-top: ").append(comp.getOrDefault("height", 1)).append("px solid #e5e7eb; margin: 20px 0;\">");
                 case "footer" -> {
-                    String companyName = (String) comp.get("companyName");
-                    String ceoName = (String) comp.get("ceoName");
-                    String businessNumber = (String) comp.get("businessNumber");
+                    String companyName = (String) comp.get("company_name");
+                    String ceoName = (String) comp.get("ceo_name");
+                    String businessNumber = (String) comp.get("business_number");
                     String address = (String) comp.get("address");
                     String phone = (String) comp.get("phone");
                     String email = (String) comp.get("email");
@@ -192,10 +192,10 @@ public class MailTemplateFileService extends BaseService {
                         .append(copyright != null ? "<div style=\"margin-top: 12px; font-size: 12px; color: #9ca3af;\">" + copyright + "</div>" : "")
                         .append("</div>");
                 }
-                case "numberedList" -> {
-                    String listTitle = (String) comp.get("listTitle");
-                    List<String> listItems = comp.get("listItems") instanceof List
-                            ? (List<String>) comp.get("listItems") : new ArrayList<>();
+                case "numbered_list" -> {
+                    String listTitle = (String) comp.get("list_title");
+                    List<String> listItems = comp.get("list_items") instanceof List
+                            ? (List<String>) comp.get("list_items") : new ArrayList<>();
                     html.append("<div style=\"padding: 16px; ").append(stylesStr).append("\">")
                         .append(listTitle != null ? "<div style=\"font-weight: 600; margin-bottom: 12px;\">" + listTitle + "</div>" : "")
                         .append("<ol style=\"margin: 0; padding-left: 20px;\">");
diff --git a/backend-spring/src/main/java/com/erp/service/MapDataService.java b/backend-spring/src/main/java/com/erp/service/MapDataService.java
index f086f75c..11877361 100644
--- a/backend-spring/src/main/java/com/erp/service/MapDataService.java
+++ b/backend-spring/src/main/java/com/erp/service/MapDataService.java
@@ -61,13 +61,13 @@ public class MapDataService extends BaseService {
      * tableName, latColumn, lngColumn 필수 / labelColumn, statusColumn, additionalColumns 선택
      */
     private String buildSql(Map<String, Object> params) {
-        String tableName = validateIdentifier((String) params.get("tableName"));
-        String latColumn = validateIdentifier((String) params.get("latColumn"));
-        String lngColumn = validateIdentifier((String) params.get("lngColumn"));
-        String labelColumn = (String) params.get("labelColumn");
-        String statusColumn = (String) params.get("statusColumn");
-        String additionalColumnsStr = (String) params.get("additionalColumns");
-        String whereClause = (String) params.get("whereClause");
+        String tableName = validateIdentifier((String) params.get("table_name"));
+        String latColumn = validateIdentifier((String) params.get("lat_column"));
+        String lngColumn = validateIdentifier((String) params.get("lng_column"));
+        String labelColumn = (String) params.get("label_column");
+        String statusColumn = (String) params.get("status_column");
+        String additionalColumnsStr = (String) params.get("additional_columns");
+        String whereClause = (String) params.get("where_clause");
 
         // 중복 없는 컬럼 집합 구성
         Set<String> columnSet = new LinkedHashSet<>();
@@ -119,11 +119,11 @@ public class MapDataService extends BaseService {
     private List<Map<String, Object>> convertToMarkers(
             List<Map<String, Object>> rows, Map<String, Object> params) {
 
-        String latColumn = (String) params.get("latColumn");
-        String lngColumn = (String) params.get("lngColumn");
-        String labelColumn = (String) params.get("labelColumn");
-        String statusColumn = (String) params.get("statusColumn");
-        String additionalColumnsStr = (String) params.get("additionalColumns");
+        String latColumn = (String) params.get("lat_column");
+        String lngColumn = (String) params.get("lng_column");
+        String labelColumn = (String) params.get("label_column");
+        String statusColumn = (String) params.get("status_column");
+        String additionalColumnsStr = (String) params.get("additional_columns");
 
         List<String> additionalColumns = new ArrayList<>();
         if (additionalColumnsStr != null && !additionalColumnsStr.isBlank()) {
@@ -169,7 +169,7 @@ public class MapDataService extends BaseService {
                     }
                 }
                 if (!additionalInfo.isEmpty()) {
-                    marker.put("additionalInfo", additionalInfo);
+                    marker.put("additional_info", additionalInfo);
                 }
             }
 
diff --git a/backend-spring/src/main/java/com/erp/service/MoldService.java b/backend-spring/src/main/java/com/erp/service/MoldService.java
index 8146c252..0e915eb7 100644
--- a/backend-spring/src/main/java/com/erp/service/MoldService.java
+++ b/backend-spring/src/main/java/com/erp/service/MoldService.java
@@ -90,7 +90,7 @@ public class MoldService extends BaseService {
     @Transactional
     public Map<String, Object> insertMoldInspection(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        if (params.get("isActive") == null) params.put("isActive", "Y");
+        if (params.get("is_active") == null) params.put("is_active", "Y");
         sqlSession.insert("mold.insertMoldInspection", params);
         return params;
     }
diff --git a/backend-spring/src/main/java/com/erp/service/MultiConnectionService.java b/backend-spring/src/main/java/com/erp/service/MultiConnectionService.java
index 222e2593..be26b75b 100644
--- a/backend-spring/src/main/java/com/erp/service/MultiConnectionService.java
+++ b/backend-spring/src/main/java/com/erp/service/MultiConnectionService.java
@@ -53,10 +53,10 @@ public class MultiConnectionService extends BaseService {
             if (tableName != null) {
                 try {
                     List<Map<String, Object>> cols = getColumnsFromConnection(connectionId, tableName);
-                    table.put("columnCount", cols.size());
+                    table.put("column_count", cols.size());
                 } catch (Exception e) {
                     log.warn("컬럼 수 조회 실패 (table={}): {}", tableName, e.getMessage());
-                    table.put("columnCount", 0);
+                    table.put("column_count", 0);
                 }
             }
         }
@@ -104,8 +104,8 @@ public class MultiConnectionService extends BaseService {
         int rows = connectionId == 0 ? dmlMainDb(sql, values) : dmlExtDb(connectionId, sql, values);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("rowsAffected", rows);
-        result.put("tableName", tableName);
+        result.put("rows_affected", rows);
+        result.put("table_name", tableName);
         result.put("data", data);
         return result;
     }
@@ -135,8 +135,8 @@ public class MultiConnectionService extends BaseService {
         int rows = connectionId == 0 ? dmlMainDb(sql, values) : dmlExtDb(connectionId, sql, values);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("rowsAffected", rows);
-        result.put("tableName", tableName);
+        result.put("rows_affected", rows);
+        result.put("table_name", tableName);
         return List.of(result);
     }
 
@@ -149,7 +149,7 @@ public class MultiConnectionService extends BaseService {
         @SuppressWarnings("unchecked")
         List<Map<String, Object>> conditions =
                 (List<Map<String, Object>>) body.getOrDefault("conditions", Collections.emptyList());
-        int maxDeleteCount = toInt(body.getOrDefault("maxDeleteCount", 100));
+        int maxDeleteCount = toInt(body.getOrDefault("max_delete_count", 100));
 
         List<Object> values = extractValues(conditions);
         String countSql = "SELECT COUNT(*) FROM " + sanitizeIdentifier(tableName) + buildWhere(conditions);
@@ -166,8 +166,8 @@ public class MultiConnectionService extends BaseService {
         int rows = connectionId == 0 ? dmlMainDb(sql, values) : dmlExtDb(connectionId, sql, values);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("rowsAffected", rows);
-        result.put("tableName", tableName);
+        result.put("rows_affected", rows);
+        result.put("table_name", tableName);
         return List.of(result);
     }
 
@@ -188,8 +188,8 @@ public class MultiConnectionService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("valid", true);
-        result.put("affectedCount", affectedCount);
-        result.put("tableName", tableName);
+        result.put("affected_count", affectedCount);
+        result.put("table_name", tableName);
         result.put("operation", operation);
         result.put("message", "검증이 완료되었습니다. 영향받는 행: " + affectedCount + "건");
         return result;
@@ -310,8 +310,8 @@ public class MultiConnectionService extends BaseService {
         String pwd = str(connInfo, "_decryptedPwd");
         if (pwd == null) pwd = str(connInfo, "password");
         props.setProperty("password", pwd != null ? pwd : "");
-        props.setProperty("connectTimeout", "30");
-        props.setProperty("socketTimeout", "30");
+        props.setProperty("connect_timeout", "30");
+        props.setProperty("socket_timeout", "30");
         return DriverManager.getConnection(url, props);
     }
 
@@ -383,7 +383,7 @@ public class MultiConnectionService extends BaseService {
     // ══════════════════════════════════════════════════════════════════════
 
     private String requireTableName(Map<String, Object> body) {
-        Object t = body.get("tableName");
+        Object t = body.get("table_name");
         if (t == null || t.toString().isBlank()) {
             throw new IllegalArgumentException("테이블명이 입력되지 않았습니다.");
         }
diff --git a/backend-spring/src/main/java/com/erp/service/MultilangService.java b/backend-spring/src/main/java/com/erp/service/MultilangService.java
index 47b617c4..ea8b6753 100644
--- a/backend-spring/src/main/java/com/erp/service/MultilangService.java
+++ b/backend-spring/src/main/java/com/erp/service/MultilangService.java
@@ -14,146 +14,146 @@ public class MultilangService extends BaseService {
     private static final String NS = "multilang.";
 
     public List<Map<String, Object>> getLanguages() {
-        return sqlSession.selectList(NS + "getMultilangLanguageList", new HashMap<>());
+        return sqlSession.selectList(NS + "get_multilang_language_list", new HashMap<>());
     }
 
     public Map<String, Object> createLanguage(Map<String, Object> params) {
-        String langCode = str(params.get("langCode"));
-        Map<String, Object> check = Map.of("langCode", langCode);
-        if (sqlSession.selectOne(NS + "getMultilangLanguageInfo", check) != null) {
+        String langCode = str(params.get("lang_code"));
+        Map<String, Object> check = Map.of("lang_code", langCode);
+        if (sqlSession.selectOne(NS + "get_multilang_language_info", check) != null) {
             throw new IllegalArgumentException("이미 존재하는 언어 코드입니다: " + langCode);
         }
-        if (params.get("isActive") == null) params.put("isActive", "Y");
-        if (params.get("sortOrder") == null) params.put("sortOrder", 0);
-        sqlSession.insert(NS + "insertMultilangLanguage", params);
-        return sqlSession.selectOne(NS + "getMultilangLanguageInfo", check);
+        if (params.get("is_active") == null) params.put("is_active", "Y");
+        if (params.get("sort_order") == null) params.put("sort_order", 0);
+        sqlSession.insert(NS + "insert_multilang_language", params);
+        return sqlSession.selectOne(NS + "get_multilang_language_info", check);
     }
 
     public Map<String, Object> updateLanguage(String langCode, Map<String, Object> params) {
-        params.put("langCode", langCode);
-        Map<String, Object> check = Map.of("langCode", langCode);
-        if (sqlSession.selectOne(NS + "getMultilangLanguageInfo", check) == null) {
+        params.put("lang_code", langCode);
+        Map<String, Object> check = Map.of("lang_code", langCode);
+        if (sqlSession.selectOne(NS + "get_multilang_language_info", check) == null) {
             throw new IllegalArgumentException("언어를 찾을 수 없습니다: " + langCode);
         }
-        sqlSession.update(NS + "updateMultilangLanguage", params);
-        return sqlSession.selectOne(NS + "getMultilangLanguageInfo", check);
+        sqlSession.update(NS + "update_multilang_language", params);
+        return sqlSession.selectOne(NS + "get_multilang_language_info", check);
     }
 
     public String toggleLanguage(String langCode) {
-        Map<String, Object> check = Map.of("langCode", langCode);
-        Map<String, Object> current = sqlSession.selectOne(NS + "getMultilangLanguageInfo", check);
+        Map<String, Object> check = Map.of("lang_code", langCode);
+        Map<String, Object> current = sqlSession.selectOne(NS + "get_multilang_language_info", check);
         if (current == null) {
             throw new IllegalArgumentException("언어를 찾을 수 없습니다: " + langCode);
         }
         String newStatus = "Y".equals(current.get("is_active")) ? "N" : "Y";
         Map<String, Object> params = new HashMap<>();
-        params.put("langCode", langCode);
-        params.put("newStatus", newStatus);
-        params.put("updatedBy", "system");
-        sqlSession.update(NS + "updateMultilangLanguageStatus", params);
+        params.put("lang_code", langCode);
+        params.put("new_status", newStatus);
+        params.put("updated_by", "system");
+        sqlSession.update(NS + "update_multilang_language_status", params);
         return "Y".equals(newStatus) ? "활성화" : "비활성화";
     }
 
     @Transactional
     public void deleteLanguage(String langCode) {
-        Map<String, Object> check = Map.of("langCode", langCode);
-        if (sqlSession.selectOne(NS + "getMultilangLanguageInfo", check) == null) {
+        Map<String, Object> check = Map.of("lang_code", langCode);
+        if (sqlSession.selectOne(NS + "get_multilang_language_info", check) == null) {
             throw new IllegalArgumentException("언어를 찾을 수 없습니다: " + langCode);
         }
-        Map<String, Object> params = Map.of("langCode", langCode);
-        sqlSession.delete(NS + "deleteMultilangTextByLangCode", params);
-        sqlSession.delete(NS + "deleteMultilangLanguage", params);
+        Map<String, Object> params = Map.of("lang_code", langCode);
+        sqlSession.delete(NS + "delete_multilang_text_by_lang_code", params);
+        sqlSession.delete(NS + "delete_multilang_language", params);
     }
 
     public List<Map<String, Object>> getLangKeys(Map<String, Object> params) {
-        if (params.containsKey("companyCode")) {
-            params.put("filterCompanyCode", params.get("companyCode"));
+        if (params.containsKey("company_code")) {
+            params.put("filter_company_code", params.get("company_code"));
         }
-        return sqlSession.selectList(NS + "getMultilangKeyList", params);
+        return sqlSession.selectList(NS + "get_multilang_key_list", params);
     }
 
     public List<Map<String, Object>> getLangTexts(int keyId) {
-        return sqlSession.selectList(NS + "getMultilangTextList", Map.of("keyId", keyId));
+        return sqlSession.selectList(NS + "get_multilang_text_list", Map.of("key_id", keyId));
     }
 
     public int createLangKey(Map<String, Object> params) {
-        String companyCode = str(params.get("companyCode"));
-        String langKey = str(params.get("langKey"));
-        Map<String, Object> dupCheck = Map.of("companyCode", companyCode, "langKey", langKey);
-        if (sqlSession.selectOne(NS + "getMultilangKeyByCompanyAndKey", dupCheck) != null) {
+        String companyCode = str(params.get("company_code"));
+        String langKey = str(params.get("lang_key"));
+        Map<String, Object> dupCheck = Map.of("company_code", companyCode, "lang_key", langKey);
+        if (sqlSession.selectOne(NS + "get_multilang_key_by_company_and_key", dupCheck) != null) {
             throw new IllegalArgumentException("동일한 회사에 이미 존재하는 언어키입니다: " + langKey);
         }
-        if (params.get("isActive") == null) params.put("isActive", "Y");
-        sqlSession.insert(NS + "insertMultilangKey", params);
-        return toInt(params.get("keyId"));
+        if (params.get("is_active") == null) params.put("is_active", "Y");
+        sqlSession.insert(NS + "insert_multilang_key", params);
+        return toInt(params.get("key_id"));
     }
 
     public void updateLangKey(int keyId, Map<String, Object> params) {
-        params.put("keyId", keyId);
-        if (sqlSession.selectOne(NS + "getMultilangKeyInfo", Map.of("keyId", keyId)) == null) {
+        params.put("key_id", keyId);
+        if (sqlSession.selectOne(NS + "get_multilang_key_info", Map.of("key_id", keyId)) == null) {
             throw new IllegalArgumentException("다국어 키를 찾을 수 없습니다: " + keyId);
         }
-        String companyCode = str(params.get("companyCode"));
-        String langKey = str(params.get("langKey"));
+        String companyCode = str(params.get("company_code"));
+        String langKey = str(params.get("lang_key"));
         if (!companyCode.isEmpty() && !langKey.isEmpty()) {
-            Map<String, Object> dupCheck = Map.of("companyCode", companyCode, "langKey", langKey, "keyId", keyId);
-            if (sqlSession.selectOne(NS + "getMultilangKeyByCompanyAndKeyExclude", dupCheck) != null) {
+            Map<String, Object> dupCheck = Map.of("company_code", companyCode, "lang_key", langKey, "key_id", keyId);
+            if (sqlSession.selectOne(NS + "get_multilang_key_by_company_and_key_exclude", dupCheck) != null) {
                 throw new IllegalArgumentException("동일한 회사에 이미 존재하는 언어키입니다: " + langKey);
             }
         }
-        sqlSession.update(NS + "updateMultilangKey", params);
+        sqlSession.update(NS + "update_multilang_key", params);
     }
 
     @Transactional
     public void deleteLangKey(int keyId) {
-        if (sqlSession.selectOne(NS + "getMultilangKeyInfo", Map.of("keyId", keyId)) == null) {
+        if (sqlSession.selectOne(NS + "get_multilang_key_info", Map.of("key_id", keyId)) == null) {
             throw new IllegalArgumentException("다국어 키를 찾을 수 없습니다: " + keyId);
         }
-        Map<String, Object> params = Map.of("keyId", keyId);
-        sqlSession.delete(NS + "deleteMultilangTextByKeyId", params);
-        sqlSession.delete(NS + "deleteMultilangKey", params);
+        Map<String, Object> params = Map.of("key_id", keyId);
+        sqlSession.delete(NS + "delete_multilang_text_by_key_id", params);
+        sqlSession.delete(NS + "delete_multilang_key", params);
     }
 
     public String toggleLangKey(int keyId) {
-        Map<String, Object> current = sqlSession.selectOne(NS + "getMultilangKeyInfo", Map.of("keyId", keyId));
+        Map<String, Object> current = sqlSession.selectOne(NS + "get_multilang_key_info", Map.of("key_id", keyId));
         if (current == null) {
             throw new IllegalArgumentException("다국어 키를 찾을 수 없습니다: " + keyId);
         }
         String newStatus = "Y".equals(current.get("is_active")) ? "N" : "Y";
         Map<String, Object> params = new HashMap<>();
-        params.put("keyId", keyId);
-        params.put("newStatus", newStatus);
-        params.put("updatedBy", "system");
-        sqlSession.update(NS + "updateMultilangKeyStatus", params);
+        params.put("key_id", keyId);
+        params.put("new_status", newStatus);
+        params.put("updated_by", "system");
+        sqlSession.update(NS + "update_multilang_key_status", params);
         return "Y".equals(newStatus) ? "활성화" : "비활성화";
     }
 
     @Transactional
     public void saveLangTexts(int keyId, List<Map<String, Object>> texts) {
-        if (sqlSession.selectOne(NS + "getMultilangKeyInfo", Map.of("keyId", keyId)) == null) {
+        if (sqlSession.selectOne(NS + "get_multilang_key_info", Map.of("key_id", keyId)) == null) {
             throw new IllegalArgumentException("다국어 키를 찾을 수 없습니다: " + keyId);
         }
-        sqlSession.delete(NS + "deleteMultilangTextByKeyId", Map.of("keyId", keyId));
+        sqlSession.delete(NS + "delete_multilang_text_by_key_id", Map.of("key_id", keyId));
         for (Map<String, Object> text : texts) {
             Map<String, Object> params = new HashMap<>(text);
-            params.put("keyId", keyId);
-            if (params.get("isActive") == null) params.put("isActive", "Y");
-            sqlSession.insert(NS + "insertMultilangText", params);
+            params.put("key_id", keyId);
+            if (params.get("is_active") == null) params.put("is_active", "Y");
+            sqlSession.insert(NS + "insert_multilang_text", params);
         }
     }
 
     public String getUserText(String companyCode, String menuCode, String langKey, String userLang) {
         Map<String, Object> params = Map.of(
-                "companyCode", companyCode, "menuCode", menuCode,
-                "langKey", langKey, "userLang", userLang);
-        Map<String, Object> result = sqlSession.selectOne(NS + "getMultilangUserText", params);
+                "company_code", companyCode, "menu_code", menuCode,
+                "lang_key", langKey, "user_lang", userLang);
+        Map<String, Object> result = sqlSession.selectOne(NS + "get_multilang_user_text", params);
         return result != null ? str(result.get("lang_text")) : langKey;
     }
 
     public String getLangText(String companyCode, String langKey, String langCode) {
         Map<String, Object> params = Map.of(
-                "companyCode", companyCode, "langKey", langKey, "langCode", langCode);
-        Map<String, Object> result = sqlSession.selectOne(NS + "getMultilangSingleText", params);
+                "company_code", companyCode, "lang_key", langKey, "lang_code", langCode);
+        Map<String, Object> result = sqlSession.selectOne(NS + "get_multilang_single_text", params);
         return result != null ? str(result.get("lang_text")) : langKey;
     }
 
@@ -161,11 +161,11 @@ public class MultilangService extends BaseService {
                                                      String userLang, List<String> langKeys) {
         if (langKeys == null || langKeys.isEmpty()) return new LinkedHashMap<>();
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("menuCode", menuCode);
-        params.put("userLang", userLang);
-        params.put("langKeys", langKeys);
-        List<Map<String, Object>> translations = sqlSession.selectList(NS + "getMultilangBatchTranslationList", params);
+        params.put("company_code", companyCode);
+        params.put("menu_code", menuCode);
+        params.put("user_lang", userLang);
+        params.put("lang_keys", langKeys);
+        List<Map<String, Object>> translations = sqlSession.selectList(NS + "get_multilang_batch_translation_list", params);
         Map<String, String> result = new LinkedHashMap<>();
         Set<String> processed = new HashSet<>();
         for (Map<String, Object> t : translations) {
@@ -178,9 +178,9 @@ public class MultilangService extends BaseService {
         List<String> missingKeys = langKeys.stream().filter(k -> !processed.contains(k)).toList();
         if (!missingKeys.isEmpty() && !"KR".equals(userLang)) {
             Map<String, Object> fallbackParams = new HashMap<>();
-            fallbackParams.put("companyCode", companyCode);
-            fallbackParams.put("missingKeys", missingKeys);
-            List<Map<String, Object>> fallback = sqlSession.selectList(NS + "getMultilangFallbackTranslationList", fallbackParams);
+            fallbackParams.put("company_code", companyCode);
+            fallbackParams.put("missing_keys", missingKeys);
+            List<Map<String, Object>> fallback = sqlSession.selectList(NS + "get_multilang_fallback_translation_list", fallbackParams);
             Set<String> fbProcessed = new HashSet<>();
             for (Map<String, Object> t : fallback) {
                 String key = str(t.get("lang_key"));
@@ -195,16 +195,16 @@ public class MultilangService extends BaseService {
     }
 
     public List<Map<String, Object>> getCategories() {
-        List<Map<String, Object>> flat = sqlSession.selectList(NS + "getMultilangCategoryList", new HashMap<>());
+        List<Map<String, Object>> flat = sqlSession.selectList(NS + "get_multilang_category_list", new HashMap<>());
         return buildCategoryTree(flat);
     }
 
     public Map<String, Object> getCategoryById(int categoryId) {
-        return sqlSession.selectOne(NS + "getMultilangCategoryInfo", Map.of("categoryId", categoryId));
+        return sqlSession.selectOne(NS + "get_multilang_category_info", Map.of("category_id", categoryId));
     }
 
     public List<Map<String, Object>> getCategoryPath(int categoryId) {
-        return sqlSession.selectList(NS + "getMultilangCategoryPath", Map.of("categoryId", categoryId));
+        return sqlSession.selectList(NS + "get_multilang_category_path", Map.of("category_id", categoryId));
     }
 
     private List<Map<String, Object>> buildCategoryTree(List<Map<String, Object>> flat) {
@@ -236,35 +236,35 @@ public class MultilangService extends BaseService {
 
     @Transactional
     public int generateKey(Map<String, Object> params) {
-        int categoryId = toInt(params.get("categoryId"));
-        String keyMeaning = str(params.get("keyMeaning"));
-        String companyCode = str(params.get("companyCode"));
+        int categoryId = toInt(params.get("category_id"));
+        String keyMeaning = str(params.get("key_meaning"));
+        String companyCode = str(params.get("company_code"));
         List<Map<String, Object>> categoryPath = getCategoryPath(categoryId);
         if (categoryPath.isEmpty()) throw new IllegalArgumentException("존재하지 않는 카테고리입니다");
         String langKey = buildLangKey(categoryPath, keyMeaning);
-        if (sqlSession.selectOne(NS + "getMultilangKeyByCompanyAndKey", Map.of("companyCode", companyCode, "langKey", langKey)) != null) {
+        if (sqlSession.selectOne(NS + "get_multilang_key_by_company_and_key", Map.of("company_code", companyCode, "lang_key", langKey)) != null) {
             throw new IllegalArgumentException("이미 존재하는 키입니다: " + langKey);
         }
         Map<String, Object> insertParams = new HashMap<>();
-        insertParams.put("companyCode", companyCode);
-        insertParams.put("langKey", langKey);
-        insertParams.put("categoryId", categoryId);
-        insertParams.put("keyMeaning", keyMeaning);
-        insertParams.put("usageNote", params.get("usageNote"));
-        insertParams.put("description", params.get("usageNote"));
-        insertParams.put("createdBy", params.getOrDefault("createdBy", "system"));
-        sqlSession.insert(NS + "insertMultilangKeyWithCategory", insertParams);
-        int keyId = toInt(insertParams.get("keyId"));
+        insertParams.put("company_code", companyCode);
+        insertParams.put("lang_key", langKey);
+        insertParams.put("category_id", categoryId);
+        insertParams.put("key_meaning", keyMeaning);
+        insertParams.put("usage_note", params.get("usage_note"));
+        insertParams.put("description", params.get("usage_note"));
+        insertParams.put("created_by", params.getOrDefault("created_by", "system"));
+        sqlSession.insert(NS + "insert_multilang_key_with_category", insertParams);
+        int keyId = toInt(insertParams.get("key_id"));
         @SuppressWarnings("unchecked")
         List<Map<String, Object>> texts = (List<Map<String, Object>>) params.get("texts");
         if (texts != null) {
             for (Map<String, Object> text : texts) {
                 Map<String, Object> tp = new HashMap<>(text);
-                tp.put("keyId", keyId);
-                if (tp.get("isActive") == null) tp.put("isActive", "Y");
-                if (tp.get("createdBy") == null) tp.put("createdBy", params.getOrDefault("createdBy", "system"));
-                if (tp.get("updatedBy") == null) tp.put("updatedBy", params.getOrDefault("createdBy", "system"));
-                sqlSession.insert(NS + "insertMultilangText", tp);
+                tp.put("key_id", keyId);
+                if (tp.get("is_active") == null) tp.put("is_active", "Y");
+                if (tp.get("created_by") == null) tp.put("created_by", params.getOrDefault("created_by", "system"));
+                if (tp.get("updated_by") == null) tp.put("updated_by", params.getOrDefault("created_by", "system"));
+                sqlSession.insert(NS + "insert_multilang_text", tp);
             }
         }
         return keyId;
@@ -274,66 +274,66 @@ public class MultilangService extends BaseService {
         List<Map<String, Object>> categoryPath = getCategoryPath(categoryId);
         if (categoryPath.isEmpty()) throw new IllegalArgumentException("존재하지 않는 카테고리입니다");
         String langKey = buildLangKey(categoryPath, keyMeaning);
-        Map<String, Object> commonKey = sqlSession.selectOne(NS + "getMultilangKeyByCompanyAndKey", Map.of("companyCode", "*", "langKey", langKey));
-        Map<String, Object> companyKey = sqlSession.selectOne(NS + "getMultilangKeyByCompanyAndKey", Map.of("companyCode", companyCode, "langKey", langKey));
+        Map<String, Object> commonKey = sqlSession.selectOne(NS + "get_multilang_key_by_company_and_key", Map.of("company_code", "*", "lang_key", langKey));
+        Map<String, Object> companyKey = sqlSession.selectOne(NS + "get_multilang_key_by_company_and_key", Map.of("company_code", companyCode, "lang_key", langKey));
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("langKey", langKey);
+        result.put("lang_key", langKey);
         result.put("exists", companyKey != null);
-        result.put("isOverride", commonKey != null && companyKey == null);
-        if (commonKey != null) result.put("baseKeyId", toInt(commonKey.get("key_id")));
+        result.put("is_override", commonKey != null && companyKey == null);
+        if (commonKey != null) result.put("base_key_id", toInt(commonKey.get("key_id")));
         return result;
     }
 
     @Transactional
     public int createOverrideKey(Map<String, Object> params) {
-        int baseKeyId = toInt(params.get("baseKeyId"));
-        String companyCode = str(params.get("companyCode"));
-        Map<String, Object> baseKey = sqlSession.selectOne(NS + "getMultilangBaseKeyInfo", Map.of("keyId", baseKeyId));
+        int baseKeyId = toInt(params.get("base_key_id"));
+        String companyCode = str(params.get("company_code"));
+        Map<String, Object> baseKey = sqlSession.selectOne(NS + "get_multilang_base_key_info", Map.of("key_id", baseKeyId));
         if (baseKey == null) throw new IllegalArgumentException("원본 키를 찾을 수 없습니다");
         if (!"*".equals(str(baseKey.get("company_code")))) throw new IllegalArgumentException("공통 키(*)만 오버라이드 할 수 있습니다");
         String langKey = str(baseKey.get("lang_key"));
-        if (sqlSession.selectOne(NS + "getMultilangKeyByCompanyAndKey", Map.of("companyCode", companyCode, "langKey", langKey)) != null) {
+        if (sqlSession.selectOne(NS + "get_multilang_key_by_company_and_key", Map.of("company_code", companyCode, "lang_key", langKey)) != null) {
             throw new IllegalArgumentException("이미 해당 회사의 오버라이드 키가 존재합니다");
         }
         Map<String, Object> insertParams = new HashMap<>();
-        insertParams.put("companyCode", companyCode);
-        insertParams.put("langKey", langKey);
-        insertParams.put("categoryId", baseKey.get("category_id"));
-        insertParams.put("keyMeaning", baseKey.get("key_meaning"));
-        insertParams.put("baseKeyId", baseKeyId);
-        insertParams.put("createdBy", params.getOrDefault("createdBy", "system"));
-        sqlSession.insert(NS + "insertMultilangOverrideKey", insertParams);
-        int keyId = toInt(insertParams.get("keyId"));
+        insertParams.put("company_code", companyCode);
+        insertParams.put("lang_key", langKey);
+        insertParams.put("category_id", baseKey.get("category_id"));
+        insertParams.put("key_meaning", baseKey.get("key_meaning"));
+        insertParams.put("base_key_id", baseKeyId);
+        insertParams.put("created_by", params.getOrDefault("created_by", "system"));
+        sqlSession.insert(NS + "insert_multilang_override_key", insertParams);
+        int keyId = toInt(insertParams.get("key_id"));
         @SuppressWarnings("unchecked")
         List<Map<String, Object>> texts = (List<Map<String, Object>>) params.get("texts");
         if (texts != null) {
             for (Map<String, Object> text : texts) {
                 Map<String, Object> tp = new HashMap<>(text);
-                tp.put("keyId", keyId);
-                if (tp.get("isActive") == null) tp.put("isActive", "Y");
-                if (tp.get("createdBy") == null) tp.put("createdBy", params.getOrDefault("createdBy", "system"));
-                if (tp.get("updatedBy") == null) tp.put("updatedBy", params.getOrDefault("createdBy", "system"));
-                sqlSession.insert(NS + "insertMultilangText", tp);
+                tp.put("key_id", keyId);
+                if (tp.get("is_active") == null) tp.put("is_active", "Y");
+                if (tp.get("created_by") == null) tp.put("created_by", params.getOrDefault("created_by", "system"));
+                if (tp.get("updated_by") == null) tp.put("updated_by", params.getOrDefault("created_by", "system"));
+                sqlSession.insert(NS + "insert_multilang_text", tp);
             }
         }
         return keyId;
     }
 
     public List<Map<String, Object>> getOverrideKeys(String companyCode) {
-        return sqlSession.selectList(NS + "getMultilangOverrideKeyList", Map.of("companyCode", companyCode));
+        return sqlSession.selectList(NS + "get_multilang_override_key_list", Map.of("company_code", companyCode));
     }
 
     @Transactional
     public List<Map<String, Object>> generateScreenLabelKeys(Map<String, Object> params) {
-        int screenId = toInt(params.get("screenId"));
-        Map<String, Object> screenInfo = sqlSession.selectOne(NS + "getMultilangScreenCompanyCode", Map.of("screenId", screenId));
+        int screenId = toInt(params.get("screen_id"));
+        Map<String, Object> screenInfo = sqlSession.selectOne(NS + "get_multilang_screen_company_code", Map.of("screen_id", screenId));
         String companyCode = (screenInfo != null && !str(screenInfo.get("company_code")).isEmpty())
-                ? str(screenInfo.get("company_code")) : str(params.getOrDefault("companyCode", "*"));
+                ? str(screenInfo.get("company_code")) : str(params.getOrDefault("company_code", "*"));
         String companyName;
         if ("*".equals(companyCode)) {
             companyName = "공통";
         } else {
-            Map<String, Object> companyInfo = sqlSession.selectOne(NS + "getMultilangCompanyName", Map.of("companyCode", companyCode));
+            Map<String, Object> companyInfo = sqlSession.selectOne(NS + "get_multilang_company_name", Map.of("company_code", companyCode));
             companyName = (companyInfo != null) ? str(companyInfo.get("company_name")) : companyCode;
         }
         List<String> groupPath = getScreenGroupPath(screenId);
@@ -346,41 +346,41 @@ public class MultilangService extends BaseService {
         List<Map<String, Object>> results = new ArrayList<>();
         for (Map<String, Object> labelInfo : labels) {
             String label = str(labelInfo.get("label"));
-            String componentId = str(labelInfo.get("componentId"));
+            String componentId = str(labelInfo.get("component_id"));
             String keyMeaning = labelToKeyMeaning(label);
             List<String> parts = new ArrayList<>(keyPrefixParts);
             parts.add(keyMeaning);
             String langKey = String.join(".", parts);
-            Map<String, Object> existing = sqlSession.selectOne(NS + "getMultilangKeyByCompanyAndKey", Map.of("companyCode", companyCode, "langKey", langKey));
+            Map<String, Object> existing = sqlSession.selectOne(NS + "get_multilang_key_by_company_and_key", Map.of("company_code", companyCode, "lang_key", langKey));
             int keyId;
             if (existing != null) {
                 keyId = toInt(existing.get("key_id"));
             } else {
                 Map<String, Object> insertParams = new HashMap<>();
-                insertParams.put("companyCode", companyCode);
-                insertParams.put("langKey", langKey);
+                insertParams.put("company_code", companyCode);
+                insertParams.put("lang_key", langKey);
                 insertParams.put("description", "화면 " + screenId + "의 " + str(labelInfo.getOrDefault("type", "라벨")) + ": " + label);
-                insertParams.put("isActive", "Y");
-                insertParams.put("categoryId", categoryId);
-                insertParams.put("keyMeaning", keyMeaning);
-                sqlSession.insert(NS + "insertMultilangKeyWithCategory", insertParams);
-                keyId = toInt(insertParams.get("keyId"));
-                sqlSession.update(NS + "upsertMultilangText", Map.of("keyId", keyId, "langCode", "KR", "langText", label));
+                insertParams.put("is_active", "Y");
+                insertParams.put("category_id", categoryId);
+                insertParams.put("key_meaning", keyMeaning);
+                sqlSession.insert(NS + "insert_multilang_key_with_category", insertParams);
+                keyId = toInt(insertParams.get("key_id"));
+                sqlSession.update(NS + "upsert_multilang_text", Map.of("key_id", keyId, "lang_code", "KR", "lang_text", label));
             }
             Map<String, Object> entry = new LinkedHashMap<>();
-            entry.put("componentId", componentId);
-            entry.put("keyId", keyId);
-            entry.put("langKey", langKey);
+            entry.put("component_id", componentId);
+            entry.put("key_id", keyId);
+            entry.put("lang_key", langKey);
             results.add(entry);
         }
         return results;
     }
 
     private List<String> getScreenGroupPath(int screenId) {
-        Map<String, Object> groupRow = sqlSession.selectOne(NS + "getMultilangScreenGroupId", Map.of("screenId", screenId));
+        Map<String, Object> groupRow = sqlSession.selectOne(NS + "get_multilang_screen_group_id", Map.of("screen_id", screenId));
         if (groupRow == null) return Collections.emptyList();
         int groupId = toInt(groupRow.get("group_id"));
-        List<Map<String, Object>> groups = sqlSession.selectList(NS + "getMultilangScreenGroupPath", Map.of("groupId", groupId));
+        List<Map<String, Object>> groups = sqlSession.selectList(NS + "get_multilang_screen_group_path", Map.of("group_id", groupId));
         List<String> path = new ArrayList<>();
         for (Map<String, Object> g : groups) path.add(str(g.get("group_name")));
         return path;
@@ -391,20 +391,20 @@ public class MultilangService extends BaseService {
         int parentId = ensureCompanyCategory(companyCode, companyName);
         int currentLevel = 3;
         for (String groupName : groupPath) {
-            Map<String, Object> existing = sqlSession.selectOne(NS + "getMultilangCategoryByNameAndParent", Map.of("categoryName", groupName, "parentId", parentId));
+            Map<String, Object> existing = sqlSession.selectOne(NS + "get_multilang_category_by_name_and_parent", Map.of("category_name", groupName, "parent_id", parentId));
             if (existing != null) {
                 parentId = toInt(existing.get("category_id"));
             } else {
                 Map<String, Object> insertParams = new HashMap<>();
-                insertParams.put("categoryCode", (companyCode + "_GROUP_" + groupName).replace("\\s+", "_"));
-                insertParams.put("categoryName", groupName);
-                insertParams.put("parentId", parentId);
+                insertParams.put("category_code", (companyCode + "_GROUP_" + groupName).replace("\\s+", "_"));
+                insertParams.put("category_name", groupName);
+                insertParams.put("parent_id", parentId);
                 insertParams.put("level", currentLevel);
-                insertParams.put("keyPrefix", groupName.toLowerCase().replace("\\s+", "_"));
+                insertParams.put("key_prefix", groupName.toLowerCase().replace("\\s+", "_"));
                 insertParams.put("description", groupName + " 화면 그룹의 다국어");
-                insertParams.put("sortOrder", 0);
-                sqlSession.insert(NS + "insertMultilangCategory", insertParams);
-                parentId = toInt(insertParams.get("categoryId"));
+                insertParams.put("sort_order", 0);
+                sqlSession.insert(NS + "insert_multilang_category", insertParams);
+                parentId = toInt(insertParams.get("category_id"));
             }
             currentLevel++;
         }
@@ -413,35 +413,35 @@ public class MultilangService extends BaseService {
 
     private int ensureCompanyCategory(String companyCode, String companyName) {
         int screenRootId = ensureScreenRootCategory();
-        Map<String, Object> existing = sqlSession.selectOne(NS + "getMultilangCategoryByCodeAndParent", Map.of("categoryCode", companyCode, "parentId", screenRootId));
+        Map<String, Object> existing = sqlSession.selectOne(NS + "get_multilang_category_by_code_and_parent", Map.of("category_code", companyCode, "parent_id", screenRootId));
         if (existing != null) return toInt(existing.get("category_id"));
         String displayName = "*".equals(companyCode) ? "공통" : companyName;
         String keyPrefix = "*".equals(companyCode) ? "common" : companyCode.toLowerCase();
         Map<String, Object> insertParams = new HashMap<>();
-        insertParams.put("categoryCode", companyCode);
-        insertParams.put("categoryName", displayName);
-        insertParams.put("parentId", screenRootId);
+        insertParams.put("category_code", companyCode);
+        insertParams.put("category_name", displayName);
+        insertParams.put("parent_id", screenRootId);
         insertParams.put("level", 2);
-        insertParams.put("keyPrefix", keyPrefix);
+        insertParams.put("key_prefix", keyPrefix);
         insertParams.put("description", displayName + " 회사의 화면 다국어");
-        insertParams.put("sortOrder", "*".equals(companyCode) ? 0 : 10);
-        sqlSession.insert(NS + "insertMultilangCategory", insertParams);
-        return toInt(insertParams.get("categoryId"));
+        insertParams.put("sort_order", "*".equals(companyCode) ? 0 : 10);
+        sqlSession.insert(NS + "insert_multilang_category", insertParams);
+        return toInt(insertParams.get("category_id"));
     }
 
     private int ensureScreenRootCategory() {
-        Map<String, Object> existing = sqlSession.selectOne(NS + "getMultilangRootCategoryByCode", Map.of("categoryCode", "screen"));
+        Map<String, Object> existing = sqlSession.selectOne(NS + "get_multilang_root_category_by_code", Map.of("category_code", "screen"));
         if (existing != null) return toInt(existing.get("category_id"));
         Map<String, Object> insertParams = new HashMap<>();
-        insertParams.put("categoryCode", "screen");
-        insertParams.put("categoryName", "화면");
-        insertParams.put("parentId", null);
+        insertParams.put("category_code", "screen");
+        insertParams.put("category_name", "화면");
+        insertParams.put("parent_id", null);
         insertParams.put("level", 1);
-        insertParams.put("keyPrefix", "screen");
+        insertParams.put("key_prefix", "screen");
         insertParams.put("description", "화면 디자이너에서 자동 생성된 다국어 키");
-        insertParams.put("sortOrder", 100);
-        sqlSession.insert(NS + "insertMultilangCategory", insertParams);
-        return toInt(insertParams.get("categoryId"));
+        insertParams.put("sort_order", 100);
+        sqlSession.insert(NS + "insert_multilang_category", insertParams);
+        return toInt(insertParams.get("category_id"));
     }
 
     private String buildLangKey(List<Map<String, Object>> categoryPath, String keyMeaning) {
diff --git a/backend-spring/src/main/java/com/erp/service/NodeExternalConnectionService.java b/backend-spring/src/main/java/com/erp/service/NodeExternalConnectionService.java
index 63e599ea..c900c9c6 100644
--- a/backend-spring/src/main/java/com/erp/service/NodeExternalConnectionService.java
+++ b/backend-spring/src/main/java/com/erp/service/NodeExternalConnectionService.java
@@ -42,7 +42,7 @@ public class NodeExternalConnectionService extends BaseService {
      */
     public List<Map<String, Object>> getTestedConnections(String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         List<Map<String, Object>> connections = sqlSession.selectList("nodeExternalConnection.selectActiveConnections", params);
 
         List<Map<String, Object>> valid = new ArrayList<>();
diff --git a/backend-spring/src/main/java/com/erp/service/NodeFlowService.java b/backend-spring/src/main/java/com/erp/service/NodeFlowService.java
index 97e7ba53..573c61a8 100644
--- a/backend-spring/src/main/java/com/erp/service/NodeFlowService.java
+++ b/backend-spring/src/main/java/com/erp/service/NodeFlowService.java
@@ -32,15 +32,15 @@ public class NodeFlowService extends BaseService {
 
     public List<Map<String, Object>> getFlowList(String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
 
         List<Map<String, Object>> flows = sqlSession.selectList("nodeFlow.getNodeFlowList", params);
 
         // flow_data 없이 summary 추가 (Node 동일 로직)
         return flows.stream().map(flow -> {
             Map<String, Object> result = new LinkedHashMap<>(flow);
-            result.put("summary", Map.of("nodeCount", 0, "edgeCount", 0,
-                    "nodeTypes", Map.of(), "topology", null));
+            result.put("summary", Map.of("node_count", 0, "edge_count", 0,
+                    "node_types", Map.of(), "topology", null));
             return result;
         }).collect(Collectors.toList());
     }
@@ -51,8 +51,8 @@ public class NodeFlowService extends BaseService {
 
     public Map<String, Object> getFlowById(int flowId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("flowId",      flowId);
-        params.put("companyCode", companyCode);
+        params.put("flow_id",      flowId);
+        params.put("company_code", companyCode);
 
         Map<String, Object> flow = sqlSession.selectOne("nodeFlow.getNodeFlowInfo", params);
         if (flow == null) return null;
@@ -68,35 +68,35 @@ public class NodeFlowService extends BaseService {
 
     @Transactional
     public Map<String, Object> createFlow(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
-        String flowName    = (String) params.get("flowName");
+        String companyCode = (String) params.get("company_code");
+        String flowName    = (String) params.get("flow_name");
 
-        if (flowName == null || params.get("flowData") == null) {
+        if (flowName == null || params.get("flow_data") == null) {
             throw new IllegalArgumentException("플로우 이름과 데이터는 필수입니다.");
         }
 
         // flowDescription null 방지
-        params.putIfAbsent("flowDescription", "");
+        params.putIfAbsent("flow_description", "");
 
         // flowData 직렬화
         serializeFlowData(params);
 
-        sqlSession.insert("nodeFlow.insertNodeFlow", params); // useGeneratedKeys → params.get("flowId") 주입
+        sqlSession.insert("nodeFlow.insertNodeFlow", params); // useGeneratedKeys → params.get("flow_id") 주입
 
-        Object flowId = params.get("flowId");
+        Object flowId = params.get("flow_id");
         log.info("플로우 저장 성공: {} (회사: {})", flowId, companyCode);
 
         // 감사 로그
-        insertAuditLog(companyCode, (String) params.get("userId"),
-                (String) params.get("userName"),
+        insertAuditLog(companyCode, (String) params.get("user_id"),
+                (String) params.get("user_name"),
                 "CREATE", String.valueOf(flowId), flowName,
                 "노드 플로우 \"" + flowName + "\" 생성",
-                Map.of("after", Map.of("flowName", flowName,
-                        "flowDescription", params.getOrDefault("flowDescription", ""))),
+                Map.of("after", Map.of("flow_name", flowName,
+                        "flow_description", params.getOrDefault("flow_description", ""))),
                 null);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("flowId", flowId);
+        result.put("flow_id", flowId);
         return result;
     }
 
@@ -106,19 +106,19 @@ public class NodeFlowService extends BaseService {
 
     @Transactional
     public Map<String, Object> updateFlow(Map<String, Object> params) {
-        Object flowId   = params.get("flowId");
-        String flowName = (String) params.get("flowName");
+        Object flowId   = params.get("flow_id");
+        String flowName = (String) params.get("flow_name");
 
-        if (flowId == null || flowName == null || params.get("flowData") == null) {
+        if (flowId == null || flowName == null || params.get("flow_data") == null) {
             throw new IllegalArgumentException("플로우 ID, 이름, 데이터는 필수입니다.");
         }
 
         // 수정 전 기존 값 조회 (감사 로그용)
         Map<String, Object> oldFlow = sqlSession.selectOne("nodeFlow.getNodeFlowForAudit",
-                Map.of("flowId", toInt(flowId, 0)));
+                Map.of("flow_id", toInt(flowId, 0)));
 
         // flowDescription null 방지
-        params.putIfAbsent("flowDescription", "");
+        params.putIfAbsent("flow_description", "");
 
         // flowData 직렬화
         serializeFlowData(params);
@@ -127,21 +127,21 @@ public class NodeFlowService extends BaseService {
         log.info("플로우 수정 성공: {}", flowId);
 
         // 감사 로그
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         Map<String, Object> changes = new LinkedHashMap<>();
         if (oldFlow != null) changes.put("before", Map.of(
-                "flowName", oldFlow.getOrDefault("flow_name", ""),
-                "flowDescription", oldFlow.getOrDefault("flow_description", "")));
-        changes.put("after", Map.of("flowName", flowName,
-                "flowDescription", params.getOrDefault("flowDescription", "")));
+                "flow_name", oldFlow.getOrDefault("flow_name", ""),
+                "flow_description", oldFlow.getOrDefault("flow_description", "")));
+        changes.put("after", Map.of("flow_name", flowName,
+                "flow_description", params.getOrDefault("flow_description", "")));
 
-        insertAuditLog(companyCode, (String) params.get("userId"),
-                (String) params.get("userName"),
+        insertAuditLog(companyCode, (String) params.get("user_id"),
+                (String) params.get("user_name"),
                 "UPDATE", String.valueOf(flowId), flowName,
                 "노드 플로우 \"" + flowName + "\" 수정", changes, null);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("flowId", flowId);
+        result.put("flow_id", flowId);
         return result;
     }
 
@@ -152,9 +152,9 @@ public class NodeFlowService extends BaseService {
     @Transactional
     public void deleteFlow(int flowId, String companyCode, String userId, String userName) {
         // 삭제 전 기존 값 조회 (감사 로그용)
-        Map<String, Object> oldFlow = sqlSession.selectOne("nodeFlow.getNodeFlowForAudit", Map.of("flowId", flowId));
+        Map<String, Object> oldFlow = sqlSession.selectOne("nodeFlow.getNodeFlowForAudit", Map.of("flow_id", flowId));
 
-        sqlSession.delete("nodeFlow.deleteNodeFlow", Map.of("flowId", flowId));
+        sqlSession.delete("nodeFlow.deleteNodeFlow", Map.of("flow_id", flowId));
         log.info("플로우 삭제 성공: {}", flowId);
 
         String flowName = oldFlow != null
@@ -163,8 +163,8 @@ public class NodeFlowService extends BaseService {
 
         Map<String, Object> changes = new LinkedHashMap<>();
         if (oldFlow != null) changes.put("before", Map.of(
-                "flowName", oldFlow.getOrDefault("flow_name", ""),
-                "flowDescription", oldFlow.getOrDefault("flow_description", "")));
+                "flow_name", oldFlow.getOrDefault("flow_name", ""),
+                "flow_description", oldFlow.getOrDefault("flow_description", "")));
 
         insertAuditLog(companyCode, userId, userName,
                 "DELETE", String.valueOf(flowId), flowName,
@@ -176,7 +176,7 @@ public class NodeFlowService extends BaseService {
     // ══════════════════════════════════════════════════════════════
 
     public Map<String, Object> getSourceTable(int flowId) {
-        Map<String, Object> row = sqlSession.selectOne("nodeFlow.getNodeFlowData", Map.of("flowId", flowId));
+        Map<String, Object> row = sqlSession.selectOne("nodeFlow.getNodeFlowData", Map.of("flow_id", flowId));
         if (row == null) return null;
 
         Map<String, Object> flowData = parseJsonToMap(row.get("flow_data"));
@@ -185,34 +185,34 @@ public class NodeFlowService extends BaseService {
 
         // tableSource 또는 externalDBSource 타입의 첫 노드 탐색
         Map<String, Object> sourceNode = nodes.stream()
-                .filter(n -> "tableSource".equals(n.get("type")) || "externalDBSource".equals(n.get("type")))
+                .filter(n -> "table_source".equals(n.get("type")) || "external_db_source".equals(n.get("type")))
                 .findFirst().orElse(null);
 
         Map<String, Object> result = new LinkedHashMap<>();
         if (sourceNode == null) {
-            result.put("sourceTable",    null);
-            result.put("sourceNodeType", null);
+            result.put("source_table",    null);
+            result.put("source_node_type", null);
             result.put("message",        "소스 노드가 없거나 테이블명이 설정되지 않았습니다.");
             return result;
         }
 
         @SuppressWarnings("unchecked")
         Map<String, Object> nodeData = (Map<String, Object>) sourceNode.getOrDefault("data", Map.of());
-        String tableName = (String) nodeData.get("tableName");
+        String tableName = (String) nodeData.get("table_name");
 
         if (tableName == null) {
-            result.put("sourceTable",    null);
-            result.put("sourceNodeType", null);
+            result.put("source_table",    null);
+            result.put("source_node_type", null);
             result.put("message",        "소스 노드가 없거나 테이블명이 설정되지 않았습니다.");
             return result;
         }
 
         log.info("플로우 소스 테이블 조회: flowId={}, table={}", flowId, tableName);
 
-        result.put("sourceTable",    tableName);
-        result.put("sourceNodeType", sourceNode.get("type"));
-        result.put("sourceNodeId",   sourceNode.get("id"));
-        result.put("displayName",    nodeData.get("displayName"));
+        result.put("source_table",    tableName);
+        result.put("source_node_type", sourceNode.get("type"));
+        result.put("source_node_id",   sourceNode.get("id"));
+        result.put("display_name",    nodeData.get("display_name"));
         return result;
     }
 
@@ -226,7 +226,7 @@ public class NodeFlowService extends BaseService {
 
         log.info("플로우 실행 시작: flowId={}", flowId);
 
-        Map<String, Object> row = sqlSession.selectOne("nodeFlow.getNodeFlowData", Map.of("flowId", flowId));
+        Map<String, Object> row = sqlSession.selectOne("nodeFlow.getNodeFlowData", Map.of("flow_id", flowId));
         if (row == null) throw new IllegalArgumentException("플로우를 찾을 수 없습니다: flowId=" + flowId);
 
         Map<String, Object> flowData = parseJsonToMap(row.get("flow_data"));
@@ -248,13 +248,13 @@ public class NodeFlowService extends BaseService {
         List<String> executionOrder = new ArrayList<>();
 
         @SuppressWarnings("unchecked")
-        List<Map<String, Object>> sourceData = contextData.get("sourceData") instanceof List
-                ? (List<Map<String, Object>>) contextData.get("sourceData")
+        List<Map<String, Object>> sourceData = contextData.get("source_data") instanceof List
+                ? (List<Map<String, Object>>) contextData.get("source_data")
                 : List.of();
 
-        String companyCode = (String) contextData.getOrDefault("companyCode",
+        String companyCode = (String) contextData.getOrDefault("company_code",
                 contextData.getOrDefault("context.companyCode", "*"));
-        String userId = (String) contextData.getOrDefault("userId",
+        String userId = (String) contextData.getOrDefault("user_id",
                 contextData.getOrDefault("context.userId", "system"));
 
         // ── 레벨별 순차 실행 (레벨 내부는 독립 실행 — 실패 시 전체 롤백)
@@ -368,30 +368,30 @@ public class NodeFlowService extends BaseService {
         Map<String, Object> data = (Map<String, Object>) node.getOrDefault("data", Map.of());
 
         return switch (type) {
-            case "tableSource", "externalDBSource" ->
+            case "table_source", "external_db_source" ->
                     executeTableSource(data, inputData);
 
-            case "insertAction" ->
+            case "insert_action" ->
                     executeInsertAction(data, inputData, companyCode, userId);
 
-            case "updateAction" ->
+            case "update_action" ->
                     executeUpdateAction(data, inputData, companyCode, userId);
 
-            case "deleteAction" ->
+            case "delete_action" ->
                     executeDeleteAction(data, inputData);
 
-            case "upsertAction" ->
+            case "upsert_action" ->
                     executeUpsertAction(data, inputData, companyCode, userId);
 
             case "condition" ->
                     executeCondition(data, inputData);
 
-            case "dataTransform", "aggregate", "formulaTransform" ->
+            case "data_transform", "aggregate", "formula_transform" ->
                     // 변환 노드: 입력 데이터 그대로 통과 (단순 pass-through)
                     inputData;
 
             case "comment", "log" -> {
-                log.info("{} 노드: {}", type, data.getOrDefault("displayName", node.get("id")));
+                log.info("{} 노드: {}", type, data.getOrDefault("display_name", node.get("id")));
                 yield Map.of("message", "Logged");
             }
 
@@ -406,9 +406,9 @@ public class NodeFlowService extends BaseService {
 
     @SuppressWarnings("unchecked")
     private Object executeTableSource(Map<String, Object> data, Object inputData) {
-        String dataSourceType = (String) data.getOrDefault("dataSourceType", "context-data");
+        String dataSourceType = (String) data.getOrDefault("data_source_type", "context-data");
         if ("table-all".equals(dataSourceType)) {
-            String tableName = (String) data.get("tableName");
+            String tableName = (String) data.get("table_name");
             if (tableName == null || tableName.isBlank()) return List.of();
             String safeName = sanitize(tableName);
             List<Map<String, Object>> rows = jdbcTemplate.queryForList(
@@ -426,9 +426,9 @@ public class NodeFlowService extends BaseService {
     @SuppressWarnings("unchecked")
     private Object executeInsertAction(Map<String, Object> data, Object inputData,
                                         String companyCode, String userId) {
-        String tableName    = (String) data.get("targetTable");
+        String tableName    = (String) data.get("target_table");
         List<Map<String, Object>> fieldMappings =
-                (List<Map<String, Object>>) data.getOrDefault("fieldMappings", List.of());
+                (List<Map<String, Object>>) data.getOrDefault("field_mappings", List.of());
 
         if (tableName == null || fieldMappings.isEmpty()) return List.of();
 
@@ -441,12 +441,12 @@ public class NodeFlowService extends BaseService {
             List<Object> values = new ArrayList<>();
 
             for (Map<String, Object> mapping : fieldMappings) {
-                String targetField = (String) mapping.get("targetField");
+                String targetField = (String) mapping.get("target_field");
                 Object value;
-                if (mapping.get("staticValue") != null) {
-                    value = mapping.get("staticValue");
+                if (mapping.get("static_value") != null) {
+                    value = mapping.get("static_value");
                 } else {
-                    value = row.get(mapping.get("sourceField"));
+                    value = row.get(mapping.get("source_field"));
                 }
                 cols.add("\"" + sanitize(targetField) + "\"");
                 values.add(value);
@@ -480,9 +480,9 @@ public class NodeFlowService extends BaseService {
     @SuppressWarnings("unchecked")
     private Object executeUpdateAction(Map<String, Object> data, Object inputData,
                                         String companyCode, String userId) {
-        String tableName    = (String) data.get("targetTable");
+        String tableName    = (String) data.get("target_table");
         List<Map<String, Object>> fieldMappings =
-                (List<Map<String, Object>>) data.getOrDefault("fieldMappings", List.of());
+                (List<Map<String, Object>>) data.getOrDefault("field_mappings", List.of());
 
         if (tableName == null) return List.of();
 
@@ -500,11 +500,11 @@ public class NodeFlowService extends BaseService {
             List<Object> setValues = new ArrayList<>();
 
             for (Map<String, Object> mapping : fieldMappings) {
-                String targetField = (String) mapping.get("targetField");
+                String targetField = (String) mapping.get("target_field");
                 if (targetField.equals(pkCol)) continue; // PK 제외
-                Object value = mapping.get("staticValue") != null
-                        ? mapping.get("staticValue")
-                        : row.get(mapping.get("sourceField"));
+                Object value = mapping.get("static_value") != null
+                        ? mapping.get("static_value")
+                        : row.get(mapping.get("source_field"));
                 setCols.add("\"" + sanitize(targetField) + "\" = ?");
                 setValues.add(value);
             }
@@ -524,7 +524,7 @@ public class NodeFlowService extends BaseService {
     // ─── DELETE ──────────────────────────────────────────────────
 
     private Object executeDeleteAction(Map<String, Object> data, Object inputData) {
-        String tableName = (String) data.get("targetTable");
+        String tableName = (String) data.get("target_table");
         if (tableName == null) return List.of();
 
         String safeTable = sanitize(tableName);
@@ -562,10 +562,10 @@ public class NodeFlowService extends BaseService {
         // 단순 pass-through 구현 (Node의 복잡한 조건 평가는 미구현)
         List<Map<String, Object>> all  = toList(inputData);
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("conditionResult", true);
-        result.put("trueData",        all);
-        result.put("falseData",       List.of());
-        result.put("allData",         all);
+        result.put("condition_result", true);
+        result.put("true_data",        all);
+        result.put("false_data",       List.of());
+        result.put("all_data",         all);
         return result;
     }
 
@@ -591,9 +591,9 @@ public class NodeFlowService extends BaseService {
             String status = nr != null ? (String) nr.get("status") : "pending";
 
             Map<String, Object> summary = new LinkedHashMap<>();
-            summary.put("nodeId",   nodeId);
-            summary.put("nodeName", getNodeDisplayName(nodeInfo, nodeId));
-            summary.put("nodeType", nodeInfo.get("type"));
+            summary.put("node_id",   nodeId);
+            summary.put("node_name", getNodeDisplayName(nodeInfo, nodeId));
+            summary.put("node_type", nodeInfo.get("type"));
             summary.put("status",   status);
             if (nr != null && nr.get("error") != null) summary.put("error", nr.get("error"));
             nodeSummaries.add(summary);
@@ -614,7 +614,7 @@ public class NodeFlowService extends BaseService {
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("success",       allOk);
         result.put("message",       allOk ? "플로우 실행이 완료되었습니다." : "플로우 실행 중 오류가 발생했습니다.");
-        result.put("executionTime", executionTime);
+        result.put("execution_time", executionTime);
         result.put("nodes",         nodeSummaries);
         result.put("summary",       summaryMap);
         return result;
@@ -639,13 +639,13 @@ public class NodeFlowService extends BaseService {
             Map<String, Object> edge = edges.stream()
                     .filter(e -> pid.equals(e.get("source")) && nodeId.equals(e.get("target")))
                     .findFirst().orElse(null);
-            if (edge != null && data instanceof Map && ((Map<?, ?>) data).containsKey("conditionResult")) {
+            if (edge != null && data instanceof Map && ((Map<?, ?>) data).containsKey("condition_result")) {
                 @SuppressWarnings("unchecked")
                 Map<String, Object> condData = (Map<String, Object>) data;
-                String handle = (String) edge.get("sourceHandle");
-                if ("true".equals(handle))  return condData.getOrDefault("trueData",  List.of());
-                if ("false".equals(handle)) return condData.getOrDefault("falseData", List.of());
-                return condData.getOrDefault("allData", data);
+                String handle = (String) edge.get("source_handle");
+                if ("true".equals(handle))  return condData.getOrDefault("true_data",  List.of());
+                if ("false".equals(handle)) return condData.getOrDefault("false_data", List.of());
+                return condData.getOrDefault("all_data", data);
             }
             return data != null ? data : sourceData;
         }
@@ -682,7 +682,7 @@ public class NodeFlowService extends BaseService {
     @SuppressWarnings("unchecked")
     private String getNodeDisplayName(Map<String, Object> node, String fallback) {
         Map<String, Object> data = (Map<String, Object>) node.getOrDefault("data", Map.of());
-        Object name = data.get("displayName");
+        Object name = data.get("display_name");
         return name != null ? name.toString() : fallback;
     }
 
@@ -708,8 +708,8 @@ public class NodeFlowService extends BaseService {
     @SuppressWarnings("unchecked")
     private String findPkColumn(List<Map<String, Object>> fieldMappings) {
         return fieldMappings.stream()
-                .filter(m -> Boolean.TRUE.equals(m.get("isPrimaryKey")))
-                .map(m -> (String) m.get("targetField"))
+                .filter(m -> Boolean.TRUE.equals(m.get("is_primary_key")))
+                .map(m -> (String) m.get("target_field"))
                 .findFirst().orElse("id");
     }
 
@@ -741,14 +741,14 @@ public class NodeFlowService extends BaseService {
     }
 
     private void serializeFlowData(Map<String, Object> params) {
-        Object flowData = params.get("flowData");
+        Object flowData = params.get("flow_data");
         if (flowData == null) return;
         if (flowData instanceof String) return; // 이미 문자열
         try {
-            params.put("flowData", objectMapper.writeValueAsString(flowData));
+            params.put("flow_data", objectMapper.writeValueAsString(flowData));
         } catch (Exception e) {
             log.warn("flowData 직렬화 실패: {}", e.getMessage());
-            params.put("flowData", "{}");
+            params.put("flow_data", "{}");
         }
     }
 
@@ -757,17 +757,17 @@ public class NodeFlowService extends BaseService {
                                  String summary, Object changes, String ipAddress) {
         try {
             Map<String, Object> params = new LinkedHashMap<>();
-            params.put("companyCode",   companyCode);
-            params.put("userId",        userId);
-            params.put("userName",      userName);
+            params.put("company_code",   companyCode);
+            params.put("user_id",        userId);
+            params.put("user_name",      userName);
             params.put("action",        action);
-            params.put("resourceType",  "NODE_FLOW");
-            params.put("resourceId",    resourceId);
-            params.put("resourceName",  resourceName);
-            params.put("tableName",     "node_flows");
+            params.put("resource_type",  "NODE_FLOW");
+            params.put("resource_id",    resourceId);
+            params.put("resource_name",  resourceName);
+            params.put("table_name",     "node_flows");
             params.put("summary",       summary);
             params.put("changes",       changes);
-            params.put("ipAddress",     ipAddress);
+            params.put("ip_address",     ipAddress);
             auditLogService.insertAuditLog(params);
         } catch (Exception e) {
             log.warn("감사 로그 삽입 실패: {}", e.getMessage());
diff --git a/backend-spring/src/main/java/com/erp/service/NumberingRuleService.java b/backend-spring/src/main/java/com/erp/service/NumberingRuleService.java
index e1098818..b9fb1f7b 100644
--- a/backend-spring/src/main/java/com/erp/service/NumberingRuleService.java
+++ b/backend-spring/src/main/java/com/erp/service/NumberingRuleService.java
@@ -29,8 +29,8 @@ public class NumberingRuleService extends BaseService {
     /** GET / → 회사별 채번 규칙 전체 목록 (parts 포함) */
     public List<Map<String, Object>> getRuleList(String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        List<Map<String, Object>> rules = sqlSession.selectList(NS + "getRuleList", params);
+        params.put("company_code", companyCode);
+        List<Map<String, Object>> rules = sqlSession.selectList(NS + "get_rule_list", params);
         loadPartsForRules(rules, companyCode);
         return rules;
     }
@@ -38,9 +38,9 @@ public class NumberingRuleService extends BaseService {
     /** GET /:ruleId → 단건 조회 (parts 포함) */
     public Map<String, Object> getRuleById(String ruleId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("ruleId", ruleId);
-        params.put("companyCode", companyCode);
-        Map<String, Object> rule = sqlSession.selectOne(NS + "getRuleById", params);
+        params.put("rule_id", ruleId);
+        params.put("company_code", companyCode);
+        Map<String, Object> rule = sqlSession.selectOne(NS + "get_rule_by_id", params);
         if (rule == null) return null;
         loadPartsForRule(rule, companyCode);
         return rule;
@@ -50,48 +50,48 @@ public class NumberingRuleService extends BaseService {
     @Transactional
     public Map<String, Object> createRule(Map<String, Object> body, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("ruleId",          body.get("ruleId"));
-        params.put("ruleName",         body.get("ruleName"));
+        params.put("rule_id",          body.get("rule_id"));
+        params.put("rule_name",         body.get("rule_name"));
         params.put("description",      body.get("description"));
         params.put("separator",        body.getOrDefault("separator", "-"));
-        params.put("resetPeriod",      body.getOrDefault("resetPeriod", "none"));
-        params.put("currentSequence",  body.getOrDefault("currentSequence", 1));
-        params.put("tableName",        body.get("tableName"));
-        params.put("columnName",       body.get("columnName"));
-        params.put("companyCode",      companyCode);
-        params.put("categoryColumn",   body.get("categoryColumn"));
-        params.put("categoryValueId",  body.get("categoryValueId"));
-        params.put("createdBy",        body.get("userId"));
+        params.put("reset_period",      body.getOrDefault("reset_period", "none"));
+        params.put("current_sequence",  body.getOrDefault("current_sequence", 1));
+        params.put("table_name",        body.get("table_name"));
+        params.put("column_name",       body.get("column_name"));
+        params.put("company_code",      companyCode);
+        params.put("category_column",   body.get("category_column"));
+        params.put("category_value_id",  body.get("category_value_id"));
+        params.put("created_by",        body.get("user_id"));
 
-        sqlSession.insert(NS + "insertRule", params);
+        sqlSession.insert(NS + "insert_rule", params);
 
         // parts 삽입
         Object partsObj = body.get("parts");
         if (partsObj instanceof List) {
             @SuppressWarnings("unchecked")
             List<Map<String, Object>> parts = (List<Map<String, Object>>) partsObj;
-            insertParts(parts, (String) body.get("ruleId"), companyCode);
+            insertParts(parts, (String) body.get("rule_id"), companyCode);
         }
 
-        return getRuleById((String) body.get("ruleId"), companyCode);
+        return getRuleById((String) body.get("rule_id"), companyCode);
     }
 
     /** PUT /:ruleId → 규칙 수정 */
     @Transactional
     public Map<String, Object> updateRule(String ruleId, Map<String, Object> body, String companyCode) {
         Map<String, Object> params = new HashMap<>(body);
-        params.put("ruleId",      ruleId);
-        params.put("companyCode", companyCode);
-        int updated = sqlSession.update(NS + "updateRule", params);
+        params.put("rule_id",      ruleId);
+        params.put("company_code", companyCode);
+        int updated = sqlSession.update(NS + "update_rule", params);
         if (updated == 0) throw new RuntimeException("규칙을 찾을 수 없거나 권한이 없습니다");
 
         // parts 교체 (있는 경우)
         Object partsObj = body.get("parts");
         if (partsObj instanceof List) {
             Map<String, Object> delParams = new HashMap<>();
-            delParams.put("ruleId",      ruleId);
-            delParams.put("companyCode", companyCode);
-            sqlSession.delete(NS + "deleteRulePartsByRuleId", delParams);
+            delParams.put("rule_id",      ruleId);
+            delParams.put("company_code", companyCode);
+            sqlSession.delete(NS + "delete_rule_parts_by_rule_id", delParams);
 
             @SuppressWarnings("unchecked")
             List<Map<String, Object>> parts = (List<Map<String, Object>>) partsObj;
@@ -106,11 +106,11 @@ public class NumberingRuleService extends BaseService {
     public void deleteRule(String ruleId, String companyCode) {
         // parts 먼저 삭제 (FK 제약이 없을 경우 대비)
         Map<String, Object> params = new HashMap<>();
-        params.put("ruleId",      ruleId);
-        params.put("companyCode", companyCode);
-        sqlSession.delete(NS + "deleteRulePartsByRuleId", params);
-        sqlSession.delete(NS + "deleteSequencesByRuleId", params);
-        int deleted = sqlSession.delete(NS + "deleteRule", params);
+        params.put("rule_id",      ruleId);
+        params.put("company_code", companyCode);
+        sqlSession.delete(NS + "delete_rule_parts_by_rule_id", params);
+        sqlSession.delete(NS + "delete_sequences_by_rule_id", params);
+        int deleted = sqlSession.delete(NS + "delete_rule", params);
         if (deleted == 0) throw new RuntimeException("규칙을 찾을 수 없거나 권한이 없습니다");
     }
 
@@ -169,10 +169,10 @@ public class NumberingRuleService extends BaseService {
             allocatedSequence = incrementSequenceForPrefix(ruleId, companyCode, prefixKey);
             // numbering_rules.current_sequence 동기화
             Map<String, Object> seqParams = new HashMap<>();
-            seqParams.put("ruleId",          ruleId);
-            seqParams.put("companyCode",      companyCode);
-            seqParams.put("currentSequence",  allocatedSequence);
-            sqlSession.update(NS + "updateCurrentSequenceInRule", seqParams);
+            seqParams.put("rule_id",          ruleId);
+            seqParams.put("company_code",      companyCode);
+            seqParams.put("current_sequence",  allocatedSequence);
+            sqlSession.update(NS + "update_current_sequence_in_rule", seqParams);
         }
 
         // 수동 파트 값 적용
@@ -193,11 +193,11 @@ public class NumberingRuleService extends BaseService {
     @Transactional
     public void resetSequence(String ruleId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("ruleId",         ruleId);
-        params.put("companyCode",    companyCode);
-        params.put("currentSequence", 0);
-        sqlSession.delete(NS + "deleteSequencesByRuleId", params);
-        sqlSession.update(NS + "updateCurrentSequenceInRule", params);
+        params.put("rule_id",         ruleId);
+        params.put("company_code",    companyCode);
+        params.put("current_sequence", 0);
+        sqlSession.delete(NS + "delete_sequences_by_rule_id", params);
+        sqlSession.update(NS + "update_current_sequence_in_rule", params);
         log.info("시퀀스 초기화 완료: ruleId={}, companyCode={}", ruleId, companyCode);
     }
 
@@ -208,9 +208,9 @@ public class NumberingRuleService extends BaseService {
     /** GET /available/:menuObjid? → 메뉴별 사용 가능한 규칙 목록 */
     public List<Map<String, Object>> getAvailableRulesForMenu(String companyCode, Integer menuObjid) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        if (menuObjid != null) params.put("menuObjid", menuObjid);
-        List<Map<String, Object>> rules = sqlSession.selectList(NS + "getAvailableRulesForMenu", params);
+        params.put("company_code", companyCode);
+        if (menuObjid != null) params.put("menu_objid", menuObjid);
+        List<Map<String, Object>> rules = sqlSession.selectList(NS + "get_available_rules_for_menu", params);
         loadPartsForRules(rules, companyCode);
         return rules;
     }
@@ -218,9 +218,9 @@ public class NumberingRuleService extends BaseService {
     /** GET /available-for-screen?tableName= → 화면별 사용 가능한 규칙 목록 */
     public List<Map<String, Object>> getAvailableRulesForScreen(String companyCode, String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("tableName",   tableName);
-        List<Map<String, Object>> rules = sqlSession.selectList(NS + "getAvailableRulesForScreen", params);
+        params.put("company_code", companyCode);
+        params.put("table_name",   tableName);
+        List<Map<String, Object>> rules = sqlSession.selectList(NS + "get_available_rules_for_screen", params);
         loadPartsForRules(rules, companyCode);
         return rules;
     }
@@ -234,23 +234,23 @@ public class NumberingRuleService extends BaseService {
     public Map<String, Object> getNumberingRuleByColumn(String companyCode,
                                                          String tableName, String columnName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("tableName",   tableName);
-        params.put("columnName",  columnName);
+        params.put("company_code", companyCode);
+        params.put("table_name",   tableName);
+        params.put("column_name",  columnName);
 
-        Map<String, Object> rule = sqlSession.selectOne(NS + "getRuleByColumn", params);
+        Map<String, Object> rule = sqlSession.selectOne(NS + "get_rule_by_column", params);
 
         // fallback: column_name이 비어있는 레거시 규칙
         if (rule == null) {
-            rule = sqlSession.selectOne(NS + "getRuleByColumnFallback", params);
+            rule = sqlSession.selectOne(NS + "get_rule_by_column_fallback", params);
             if (rule != null) {
                 // column_name 자동 업데이트 (레거시 마이그레이션)
                 Map<String, Object> upParams = new HashMap<>();
-                upParams.put("ruleId",      rule.get("rule_id"));
-                upParams.put("companyCode", companyCode);
-                upParams.put("columnName",  columnName);
-                sqlSession.update(NS + "updateRuleColumnName", upParams);
-                rule.put("columnName", columnName);
+                upParams.put("rule_id",      rule.get("rule_id"));
+                upParams.put("company_code", companyCode);
+                upParams.put("column_name",  columnName);
+                sqlSession.update(NS + "update_rule_column_name", upParams);
+                rule.put("column_name", columnName);
             }
         }
 
@@ -272,22 +272,22 @@ public class NumberingRuleService extends BaseService {
     /** POST /test/save → UPSERT 규칙 */
     @Transactional
     public Map<String, Object> saveRuleToTest(Map<String, Object> body, String companyCode) {
-        String ruleId = (String) body.get("ruleId");
+        String ruleId = (String) body.get("rule_id");
 
         Map<String, Object> lookupParams = new HashMap<>();
-        lookupParams.put("ruleId",      ruleId);
-        lookupParams.put("companyCode", companyCode);
-        Map<String, Object> existing = sqlSession.selectOne(NS + "getRuleById", lookupParams);
+        lookupParams.put("rule_id",      ruleId);
+        lookupParams.put("company_code", companyCode);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "get_rule_by_id", lookupParams);
 
         if (existing != null) {
             // 업데이트
             Map<String, Object> upParams = new HashMap<>(body);
-            upParams.put("ruleId",      ruleId);
-            upParams.put("companyCode", companyCode);
-            sqlSession.update(NS + "updateRule", upParams);
+            upParams.put("rule_id",      ruleId);
+            upParams.put("company_code", companyCode);
+            sqlSession.update(NS + "update_rule", upParams);
 
             // parts 교체
-            sqlSession.delete(NS + "deleteRulePartsByRuleId", lookupParams);
+            sqlSession.delete(NS + "delete_rule_parts_by_rule_id", lookupParams);
         } else {
             // 신규 등록
             createRule(body, companyCode);
@@ -319,8 +319,8 @@ public class NumberingRuleService extends BaseService {
     public Map<String, Object> copyRulesForCompany(String sourceCompanyCode,
                                                     String targetCompanyCode) {
         Map<String, Object> srcParams = new HashMap<>();
-        srcParams.put("companyCode", sourceCompanyCode);
-        List<Map<String, Object>> sourceRules = sqlSession.selectList(NS + "getRulesForCopy", srcParams);
+        srcParams.put("company_code", sourceCompanyCode);
+        List<Map<String, Object>> sourceRules = sqlSession.selectList(NS + "get_rules_for_copy", srcParams);
 
         int copied = 0;
         int skipped = 0;
@@ -330,9 +330,9 @@ public class NumberingRuleService extends BaseService {
 
             // 대상 회사에 이미 존재하는지 확인
             Map<String, Object> checkParams = new HashMap<>();
-            checkParams.put("ruleId",      ruleId);
-            checkParams.put("companyCode", targetCompanyCode);
-            Map<String, Object> existing = sqlSession.selectOne(NS + "getRuleById", checkParams);
+            checkParams.put("rule_id",      ruleId);
+            checkParams.put("company_code", targetCompanyCode);
+            Map<String, Object> existing = sqlSession.selectOne(NS + "get_rule_by_id", checkParams);
 
             if (existing != null) {
                 skipped++;
@@ -341,16 +341,16 @@ public class NumberingRuleService extends BaseService {
 
             // 규칙 복사
             Map<String, Object> insertParams = new HashMap<>(rule);
-            insertParams.put("companyCode",     targetCompanyCode);
-            insertParams.put("currentSequence", 0);
-            insertParams.put("createdBy",       "system");
-            sqlSession.insert(NS + "insertRule", insertParams);
+            insertParams.put("company_code",     targetCompanyCode);
+            insertParams.put("current_sequence", 0);
+            insertParams.put("created_by",       "system");
+            sqlSession.insert(NS + "insert_rule", insertParams);
 
             // parts 복사
             Map<String, Object> partsParams = new HashMap<>();
-            partsParams.put("ruleId",      ruleId);
-            partsParams.put("companyCode", sourceCompanyCode);
-            List<Map<String, Object>> parts = sqlSession.selectList(NS + "getRulePartsForCopy", partsParams);
+            partsParams.put("rule_id",      ruleId);
+            partsParams.put("company_code", sourceCompanyCode);
+            List<Map<String, Object>> parts = sqlSession.selectList(NS + "get_rule_parts_for_copy", partsParams);
             insertParts(parts, ruleId, targetCompanyCode);
 
             copied++;
@@ -370,19 +370,19 @@ public class NumberingRuleService extends BaseService {
     private void insertParts(List<Map<String, Object>> parts, String ruleId, String companyCode) {
         for (Map<String, Object> part : parts) {
             Map<String, Object> partParams = new HashMap<>(part);
-            partParams.put("ruleId",      ruleId);
-            partParams.put("companyCode", companyCode);
+            partParams.put("rule_id",      ruleId);
+            partParams.put("company_code", companyCode);
 
             // auto_config: separatorAfter 통합
             Map<String, Object> autoConfig = parseAutoConfig(part.get("auto_config"));
-            Object sepAfter = part.getOrDefault("separatorAfter", "-");
-            autoConfig.put("separatorAfter", sepAfter);
-            partParams.put("autoConfig",   toJsonString(autoConfig));
+            Object sepAfter = part.getOrDefault("separator_after", "-");
+            autoConfig.put("separator_after", sepAfter);
+            partParams.put("auto_config",   toJsonString(autoConfig));
 
-            Map<String, Object> manualConfig = parseAutoConfig(part.get("manualConfig"));
-            partParams.put("manualConfig", toJsonString(manualConfig));
+            Map<String, Object> manualConfig = parseAutoConfig(part.get("manual_config"));
+            partParams.put("manual_config", toJsonString(manualConfig));
 
-            sqlSession.insert(NS + "insertRulePart", partParams);
+            sqlSession.insert(NS + "insert_rule_part", partParams);
         }
     }
 
@@ -395,14 +395,14 @@ public class NumberingRuleService extends BaseService {
     private void loadPartsForRule(Map<String, Object> rule, String companyCode) {
         String ruleId = (String) rule.get("rule_id");
         Map<String, Object> params = new HashMap<>();
-        params.put("ruleId",      ruleId);
-        params.put("companyCode", companyCode);
-        List<Map<String, Object>> parts = sqlSession.selectList(NS + "getRulePartsByRuleId", params);
+        params.put("rule_id",      ruleId);
+        params.put("company_code", companyCode);
+        List<Map<String, Object>> parts = sqlSession.selectList(NS + "get_rule_parts_by_rule_id", params);
         // autoConfig에서 separatorAfter 추출
         for (Map<String, Object> part : parts) {
             Map<String, Object> ac = parseAutoConfig(part.get("auto_config"));
-            if (ac.containsKey("separatorAfter")) {
-                part.put("separatorAfter", ac.get("separatorAfter"));
+            if (ac.containsKey("separator_after")) {
+                part.put("separator_after", ac.get("separator_after"));
             }
         }
         rule.put("parts", parts);
@@ -417,10 +417,10 @@ public class NumberingRuleService extends BaseService {
     /** 순번 조회 (없으면 0 반환) */
     private long getSequenceForPrefix(String ruleId, String companyCode, String prefixKey) {
         Map<String, Object> params = new HashMap<>();
-        params.put("ruleId",      ruleId);
-        params.put("companyCode", companyCode);
-        params.put("prefixKey",   prefixKey);
-        Map<String, Object> row = sqlSession.selectOne(NS + "getSequenceForPrefix", params);
+        params.put("rule_id",      ruleId);
+        params.put("company_code", companyCode);
+        params.put("prefix_key",   prefixKey);
+        Map<String, Object> row = sqlSession.selectOne(NS + "get_sequence_for_prefix", params);
         if (row == null) return 0L;
         Object seq = row.get("current_sequence");
         return seq == null ? 0L : ((Number) seq).longValue();
@@ -492,8 +492,8 @@ public class NumberingRuleService extends BaseService {
             if ("manual".equals(generationMethod)) {
                 values.add(isPreview ? "____" : "");
             } else if ("sequence".equals(partType)) {
-                int length    = toInt(ac.get("sequenceLength"), 3);
-                int startFrom = toInt(ac.get("startFrom"), 1);
+                int length    = toInt(ac.get("sequence_length"), 3);
+                int startFrom = toInt(ac.get("start_from"), 1);
                 long seq = isPreview ? (nextSequence - 1 + startFrom) : nextSequence;
                 values.add(String.format("%0" + length + "d", seq));
             } else {
@@ -522,7 +522,7 @@ public class NumberingRuleService extends BaseService {
                 manualIndex++;
                 values.add(val != null ? val : "");
             } else if ("sequence".equals(partType)) {
-                int length = toInt(ac.get("sequenceLength"), 3);
+                int length = toInt(ac.get("sequence_length"), 3);
                 values.add(String.format("%0" + length + "d", allocatedSequence));
             } else {
                 values.add(computeSinglePartValue(partType, ac, formData));
@@ -536,19 +536,19 @@ public class NumberingRuleService extends BaseService {
                                            Map<String, Object> ac,
                                            Map<String, Object> formData) {
         return switch (partType) {
-            case "text" -> String.valueOf(ac.getOrDefault("textValue", "TEXT"));
+            case "text" -> String.valueOf(ac.getOrDefault("text_value", "TEXT"));
 
             case "number" -> {
-                int length = toInt(ac.get("numberLength"), 3);
-                int value  = toInt(ac.get("numberValue"),  1);
+                int length = toInt(ac.get("number_length"), 3);
+                int value  = toInt(ac.get("number_value"),  1);
                 yield String.format("%0" + length + "d", value);
             }
 
             case "date" -> {
-                String dateFormat = (String) ac.getOrDefault("dateFormat", "YYYYMMDD");
-                if (Boolean.TRUE.equals(ac.get("useColumnValue"))
-                        && ac.get("sourceColumnName") != null && formData != null) {
-                    Object colVal = formData.get(ac.get("sourceColumnName"));
+                String dateFormat = (String) ac.getOrDefault("date_format", "YYYYMMDD");
+                if (Boolean.TRUE.equals(ac.get("use_column_value"))
+                        && ac.get("source_column_name") != null && formData != null) {
+                    Object colVal = formData.get(ac.get("source_column_name"));
                     if (colVal != null) {
                         try {
                             LocalDate ld = LocalDate.parse(colVal.toString().substring(0, 10));
@@ -562,7 +562,7 @@ public class NumberingRuleService extends BaseService {
             case "category" -> resolveCategoryFormat(ac, formData);
 
             case "reference" -> {
-                String refCol = (String) ac.get("referenceColumnName");
+                String refCol = (String) ac.get("reference_column_name");
                 if (refCol != null && formData != null && formData.containsKey(refCol)) {
                     yield String.valueOf(formData.get(refCol));
                 }
@@ -575,7 +575,7 @@ public class NumberingRuleService extends BaseService {
 
     /** category 파트 format 해석 */
     private String resolveCategoryFormat(Map<String, Object> ac, Map<String, Object> formData) {
-        String categoryKey = (String) ac.get("categoryKey");
+        String categoryKey = (String) ac.get("category_key");
         if (categoryKey == null || formData == null) return "";
 
         String colName = categoryKey.contains(".") ? categoryKey.split("\\.")[1] : categoryKey;
@@ -586,12 +586,12 @@ public class NumberingRuleService extends BaseService {
 
         @SuppressWarnings("unchecked")
         List<Map<String, Object>> mappings =
-                (List<Map<String, Object>>) ac.getOrDefault("categoryMappings", new ArrayList<>());
+                (List<Map<String, Object>>) ac.getOrDefault("category_mappings", new ArrayList<>());
 
         Map<String, Object> match = mappings.stream().filter(m -> {
-            Object vid  = m.get("categoryValueId");
-            Object code = m.get("categoryValueCode");
-            Object label = m.get("categoryValueLabel");
+            Object vid  = m.get("category_value_id");
+            Object code = m.get("category_value_code");
+            Object label = m.get("category_value_label");
             if (vid != null  && vid.toString().equals(selectedStr))   return true;
             if (code != null && code.toString().equals(selectedStr))  return true;
             if (label != null && label.toString().equals(selectedStr)) return true;
@@ -609,8 +609,8 @@ public class NumberingRuleService extends BaseService {
                 String resolvedId    = String.valueOf(row.get("value_id"));
                 String resolvedLabel = String.valueOf(row.get("value_label"));
                 match = mappings.stream().filter(m -> {
-                    Object vid = m.get("categoryValueId");
-                    Object lbl = m.get("categoryValueLabel");
+                    Object vid = m.get("category_value_id");
+                    Object lbl = m.get("category_value_label");
                     if (vid != null && vid.toString().equals(resolvedId)) return true;
                     if (lbl != null && lbl.toString().equals(resolvedLabel)) return true;
                     return false;
@@ -631,8 +631,8 @@ public class NumberingRuleService extends BaseService {
             if (i < values.size() - 1) {
                 Map<String, Object> part = sortedParts.get(i);
                 Map<String, Object> ac   = parseAutoConfig(part.get("auto_config"));
-                Object sep = part.containsKey("separatorAfter") ? part.get("separatorAfter")
-                        : ac.getOrDefault("separatorAfter", globalSeparator != null ? globalSeparator : "");
+                Object sep = part.containsKey("separator_after") ? part.get("separator_after")
+                        : ac.getOrDefault("separator_after", globalSeparator != null ? globalSeparator : "");
                 sb.append(sep != null ? sep.toString() : "");
             }
         }
diff --git a/backend-spring/src/main/java/com/erp/service/PackagingService.java b/backend-spring/src/main/java/com/erp/service/PackagingService.java
index 95429a2a..3a3bda43 100644
--- a/backend-spring/src/main/java/com/erp/service/PackagingService.java
+++ b/backend-spring/src/main/java/com/erp/service/PackagingService.java
@@ -22,28 +22,28 @@ public class PackagingService extends BaseService {
 
     public List<Map<String, Object>> getPkgUnits(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getPkgUnits", params);
+        return sqlSession.selectList(NS + "get_pkg_units", params);
     }
 
     @Transactional
     public Map<String, Object> createPkgUnit(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.insert(NS + "insertPkgUnit", params);
+        sqlSession.insert(NS + "insert_pkg_unit", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updatePkgUnit(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updatePkgUnit", params);
+        sqlSession.update(NS + "update_pkg_unit", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deletePkgUnit(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deletePkgUnitItemsByUnitId", params);
-        sqlSession.delete(NS + "deletePkgUnit", params);
+        sqlSession.delete(NS + "delete_pkg_unit_items_by_unit_id", params);
+        sqlSession.delete(NS + "delete_pkg_unit", params);
         return params;
     }
 
@@ -51,20 +51,20 @@ public class PackagingService extends BaseService {
 
     public List<Map<String, Object>> getPkgUnitItems(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getPkgUnitItems", params);
+        return sqlSession.selectList(NS + "get_pkg_unit_items", params);
     }
 
     @Transactional
     public Map<String, Object> createPkgUnitItem(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.insert(NS + "insertPkgUnitItem", params);
+        sqlSession.insert(NS + "insert_pkg_unit_item", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deletePkgUnitItem(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deletePkgUnitItem", params);
+        sqlSession.delete(NS + "delete_pkg_unit_item", params);
         return params;
     }
 
@@ -72,28 +72,28 @@ public class PackagingService extends BaseService {
 
     public List<Map<String, Object>> getLoadingUnits(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getLoadingUnits", params);
+        return sqlSession.selectList(NS + "get_loading_units", params);
     }
 
     @Transactional
     public Map<String, Object> createLoadingUnit(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.insert(NS + "insertLoadingUnit", params);
+        sqlSession.insert(NS + "insert_loading_unit", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateLoadingUnit(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updateLoadingUnit", params);
+        sqlSession.update(NS + "update_loading_unit", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteLoadingUnit(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deleteLoadingUnitPkgsByUnitId", params);
-        sqlSession.delete(NS + "deleteLoadingUnit", params);
+        sqlSession.delete(NS + "delete_loading_unit_pkgs_by_unit_id", params);
+        sqlSession.delete(NS + "delete_loading_unit", params);
         return params;
     }
 
@@ -101,20 +101,20 @@ public class PackagingService extends BaseService {
 
     public List<Map<String, Object>> getLoadingUnitPkgs(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getLoadingUnitPkgs", params);
+        return sqlSession.selectList(NS + "get_loading_unit_pkgs", params);
     }
 
     @Transactional
     public Map<String, Object> createLoadingUnitPkg(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.insert(NS + "insertLoadingUnitPkg", params);
+        sqlSession.insert(NS + "insert_loading_unit_pkg", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteLoadingUnitPkg(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deleteLoadingUnitPkg", params);
+        sqlSession.delete(NS + "delete_loading_unit_pkg", params);
         return params;
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/PopActionService.java b/backend-spring/src/main/java/com/erp/service/PopActionService.java
index 14dbda4b..af0240c8 100644
--- a/backend-spring/src/main/java/com/erp/service/PopActionService.java
+++ b/backend-spring/src/main/java/com/erp/service/PopActionService.java
@@ -40,17 +40,17 @@ public class PopActionService extends BaseService {
         List<Map<String, Object>> tasks = (List<Map<String, Object>>) body.get("tasks");
         Map<String, Object> data = body.get("data") != null ? (Map<String, Object>) body.get("data") : new HashMap<>();
         Map<String, Object> mappings = body.get("mappings") != null ? (Map<String, Object>) body.get("mappings") : new HashMap<>();
-        List<Map<String, Object>> statusChanges = body.get("statusChanges") != null
-                ? (List<Map<String, Object>>) body.get("statusChanges") : new ArrayList<>();
-        Map<String, Object> cartChanges = (Map<String, Object>) body.get("cartChanges");
+        List<Map<String, Object>> statusChanges = body.get("status_changes") != null
+                ? (List<Map<String, Object>>) body.get("status_changes") : new ArrayList<>();
+        Map<String, Object> cartChanges = (Map<String, Object>) body.get("cart_changes");
 
         List<Map<String, Object>> items = data.get("items") != null
                 ? (List<Map<String, Object>>) data.get("items") : new ArrayList<>();
-        Map<String, Object> fieldValues = data.get("fieldValues") != null
-                ? (Map<String, Object>) data.get("fieldValues") : new HashMap<>();
+        Map<String, Object> fieldValues = data.get("field_values") != null
+                ? (Map<String, Object>) data.get("field_values") : new HashMap<>();
 
-        Map<String, Object> cardMapping = mappings.get("cardList") != null
-                ? (Map<String, Object>) mappings.get("cardList") : null;
+        Map<String, Object> cardMapping = mappings.get("card_list") != null
+                ? (Map<String, Object>) mappings.get("card_list") : null;
         Map<String, Object> fieldMapping = mappings.get("field") != null
                 ? (Map<String, Object>) mappings.get("field") : null;
 
@@ -101,10 +101,10 @@ public class PopActionService extends BaseService {
                 processedCount, insertedCount, deletedCount);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("processedCount", processedCount);
-        result.put("insertedCount", insertedCount);
-        result.put("deletedCount", deletedCount);
-        result.put("generatedCodes", generatedCodes);
+        result.put("processed_count", processedCount);
+        result.put("inserted_count", insertedCount);
+        result.put("deleted_count", deletedCount);
+        result.put("generated_codes", generatedCodes);
         return result;
     }
 
@@ -117,35 +117,35 @@ public class PopActionService extends BaseService {
                                  String companyCode, String userId,
                                  List<Map<String, Object>> generatedCodes) {
         if (cardMapping == null) return 0;
-        String targetTable = str(cardMapping.get("targetTable"), "");
-        Map<String, String> columnMapping = (Map<String, String>) cardMapping.get("columnMapping");
+        String targetTable = str(cardMapping.get("target_table"), "");
+        Map<String, String> columnMapping = (Map<String, String>) cardMapping.get("column_mapping");
         if (targetTable.isEmpty() || columnMapping == null || columnMapping.isEmpty()) return 0;
         if (!isSafeIdentifier(targetTable))
             throw new IllegalArgumentException("유효하지 않은 테이블명: " + targetTable);
 
-        List<Map<String, Object>> cardAutoGen = safeList(cardMapping.get("autoGenMappings"));
-        List<Map<String, Object>> fieldAutoGen = fieldMapping != null ? safeList(fieldMapping.get("autoGenMappings")) : new ArrayList<>();
+        List<Map<String, Object>> cardAutoGen = safeList(cardMapping.get("auto_gen_mappings"));
+        List<Map<String, Object>> fieldAutoGen = fieldMapping != null ? safeList(fieldMapping.get("auto_gen_mappings")) : new ArrayList<>();
         List<Map<String, Object>> allAutoGen = new ArrayList<>(fieldAutoGen);
         allAutoGen.addAll(cardAutoGen);
 
-        List<Map<String, Object>> cardHidden = safeList(cardMapping.get("hiddenMappings"));
-        List<Map<String, Object>> fieldHidden = fieldMapping != null ? safeList(fieldMapping.get("hiddenMappings")) : new ArrayList<>();
+        List<Map<String, Object>> cardHidden = safeList(cardMapping.get("hidden_mappings"));
+        List<Map<String, Object>> fieldHidden = fieldMapping != null ? safeList(fieldMapping.get("hidden_mappings")) : new ArrayList<>();
         List<Map<String, Object>> allHidden = new ArrayList<>(fieldHidden);
         allHidden.addAll(cardHidden);
 
         // shareAcrossItems=true 일괄 채번
         Map<String, String> sharedCodes = new HashMap<>();
         for (Map<String, Object> ag : allAutoGen) {
-            if (!Boolean.TRUE.equals(ag.get("shareAcrossItems"))) continue;
-            String ruleId = str(ag.get("numberingRuleId"), "");
-            String targetCol = str(ag.get("targetColumn"), "");
+            if (!Boolean.TRUE.equals(ag.get("share_across_items"))) continue;
+            String ruleId = str(ag.get("numbering_rule_id"), "");
+            String targetCol = str(ag.get("target_column"), "");
             if (ruleId.isEmpty() || targetCol.isEmpty() || !isSafeIdentifier(targetCol)) continue;
             try {
                 Map<String, Object> ctx = new HashMap<>(fieldValues);
                 if (!items.isEmpty()) ctx.putAll(items.get(0));
                 String code = numberingRuleService.allocateCode(ruleId, companyCode, ctx, null);
                 sharedCodes.put(targetCol, code);
-                generatedCodes.add(codeEntry(targetCol, code, Boolean.TRUE.equals(ag.get("showResultModal"))));
+                generatedCodes.add(codeEntry(targetCol, code, Boolean.TRUE.equals(ag.get("show_result_modal"))));
             } catch (Exception e) {
                 log.error("[pop/execute-action] 일괄 채번 실패: ruleId={}, err={}", ruleId, e.getMessage());
             }
@@ -166,8 +166,8 @@ public class PopActionService extends BaseService {
 
             // fieldMapping columns (동일 테이블 한정)
             if (fieldMapping != null) {
-                String fieldTable = str(fieldMapping.get("targetTable"), "");
-                Map<String, String> fColMap = (Map<String, String>) fieldMapping.get("columnMapping");
+                String fieldTable = str(fieldMapping.get("target_table"), "");
+                Map<String, String> fColMap = (Map<String, String>) fieldMapping.get("column_mapping");
                 if (targetTable.equals(fieldTable) && fColMap != null) {
                     for (Map.Entry<String, String> e : fColMap.entrySet()) {
                         if (!isSafeIdentifier(e.getValue())) continue;
@@ -180,7 +180,7 @@ public class PopActionService extends BaseService {
 
             // hidden mappings
             for (Map<String, Object> hm : allHidden) {
-                String tc = str(hm.get("targetColumn"), "");
+                String tc = str(hm.get("target_column"), "");
                 if (tc.isEmpty() || !isSafeIdentifier(tc) || cols.contains("\"" + tc + "\"")) continue;
                 cols.add("\"" + tc + "\"");
                 vals.add(resolveHiddenValue(hm, item, fieldValues));
@@ -188,18 +188,18 @@ public class PopActionService extends BaseService {
 
             // auto-gen mappings
             for (Map<String, Object> ag : allAutoGen) {
-                String ruleId = str(ag.get("numberingRuleId"), "");
-                String tc = str(ag.get("targetColumn"), "");
+                String ruleId = str(ag.get("numbering_rule_id"), "");
+                String tc = str(ag.get("target_column"), "");
                 if (ruleId.isEmpty() || tc.isEmpty() || !isSafeIdentifier(tc) || cols.contains("\"" + tc + "\"")) continue;
-                if (Boolean.TRUE.equals(ag.get("shareAcrossItems")) && sharedCodes.containsKey(tc)) {
+                if (Boolean.TRUE.equals(ag.get("share_across_items")) && sharedCodes.containsKey(tc)) {
                     cols.add("\"" + tc + "\""); vals.add(sharedCodes.get(tc));
-                } else if (!Boolean.TRUE.equals(ag.get("shareAcrossItems"))) {
+                } else if (!Boolean.TRUE.equals(ag.get("share_across_items"))) {
                     try {
                         Map<String, Object> ctx = new HashMap<>(fieldValues);
                         ctx.putAll(item);
                         String code = numberingRuleService.allocateCode(ruleId, companyCode, ctx, null);
                         cols.add("\"" + tc + "\""); vals.add(code);
-                        generatedCodes.add(codeEntry(tc, code, Boolean.TRUE.equals(ag.get("showResultModal"))));
+                        generatedCodes.add(codeEntry(tc, code, Boolean.TRUE.equals(ag.get("show_result_modal"))));
                     } catch (Exception e) {
                         log.error("[pop/execute-action] 채번 실패: ruleId={}, err={}", ruleId, e.getMessage());
                     }
@@ -223,8 +223,8 @@ public class PopActionService extends BaseService {
 
         // fieldMapping 별도 테이블 INSERT
         if (fieldMapping != null) {
-            String fieldTable = str(fieldMapping.get("targetTable"), "");
-            Map<String, String> fColMap = (Map<String, String>) fieldMapping.get("columnMapping");
+            String fieldTable = str(fieldMapping.get("target_table"), "");
+            Map<String, String> fColMap = (Map<String, String>) fieldMapping.get("column_mapping");
             if (!fieldTable.isEmpty() && !fieldTable.equals(targetTable) && fColMap != null && !fColMap.isEmpty()) {
                 if (!isSafeIdentifier(fieldTable))
                     throw new IllegalArgumentException("유효하지 않은 테이블명: " + fieldTable);
@@ -256,24 +256,24 @@ public class PopActionService extends BaseService {
     @SuppressWarnings("unchecked")
     private int processDataUpdate(Map<String, Object> task, List<Map<String, Object>> items,
                                    Map<String, Object> fieldValues, String companyCode, String userId) {
-        String targetTable = str(task.get("targetTable"), "");
-        String targetColumn = str(task.get("targetColumn"), "");
+        String targetTable = str(task.get("target_table"), "");
+        String targetColumn = str(task.get("target_column"), "");
         if (targetTable.isEmpty() || targetColumn.isEmpty()) return 0;
         if (!isSafeIdentifier(targetTable) || !isSafeIdentifier(targetColumn)) return 0;
 
-        String opType = str(task.get("operationType"), "assign");
-        String valSource = str(task.get("valueSource"), "fixed");
-        String lookupMode = str(task.get("lookupMode"), "auto");
-        Map<String, Object> preCondition = (Map<String, Object>) task.get("preCondition");
-        Map<String, Object> conditionalValue = (Map<String, Object>) task.get("conditionalValue");
-        String fixedValue = str(task.get("fixedValue"), "");
+        String opType = str(task.get("operation_type"), "assign");
+        String valSource = str(task.get("value_source"), "fixed");
+        String lookupMode = str(task.get("lookup_mode"), "auto");
+        Map<String, Object> preCondition = (Map<String, Object>) task.get("pre_condition");
+        Map<String, Object> conditionalValue = (Map<String, Object>) task.get("conditional_value");
+        String fixedValue = str(task.get("fixed_value"), "");
 
         String itemField;
         String pkColumn;
-        if ("manual".equals(lookupMode) && task.get("manualItemField") != null && task.get("manualPkColumn") != null) {
-            String manualPk = str(task.get("manualPkColumn"), "");
+        if ("manual".equals(lookupMode) && task.get("manual_item_field") != null && task.get("manual_pk_column") != null) {
+            String manualPk = str(task.get("manual_pk_column"), "");
             if (!isSafeIdentifier(manualPk)) return 0;
-            itemField = str(task.get("manualItemField"), "");
+            itemField = str(task.get("manual_item_field"), "");
             pkColumn = manualPk;
         } else if ("cart_items".equals(targetTable)) {
             itemField = "__cart_id"; pkColumn = "id";
@@ -299,19 +299,19 @@ public class PopActionService extends BaseService {
                     String pcCol = str(preCondition.get("column"), "");
                     if (!isSafeIdentifier(pcCol)) throw new IllegalArgumentException("유효하지 않은 preCondition 컬럼: " + pcCol);
                     whereSql += " AND \"" + pcCol + "\" = ?";
-                    params.add(preCondition.get("expectedValue"));
+                    params.add(preCondition.get("expected_value"));
                 }
                 int rows = jdbcTemplate.update(
                         "UPDATE \"" + targetTable + "\" SET \"" + targetColumn + "\" = ?" + autoUpd + " " + whereSql,
                         params.toArray());
                 if (preCondition != null && rows == 0)
-                    throw new PreConditionFailException(str(preCondition.get("failMessage"), "조건이 일치하지 않아 처리할 수 없습니다."));
+                    throw new PreConditionFailException(str(preCondition.get("fail_message"), "조건이 일치하지 않아 처리할 수 없습니다."));
                 processed++;
             }
         } else if ("db-conditional".equals(opType)) {
-            String compareCol = str(task.get("compareColumn"), "");
-            String compareOp = str(task.get("compareOperator"), "=");
-            String compareWith = str(task.get("compareWith"), "");
+            String compareCol = str(task.get("compare_column"), "");
+            String compareOp = str(task.get("compare_operator"), "=");
+            String compareWith = str(task.get("compare_with"), "");
             if (compareCol.isEmpty() || compareWith.isEmpty() || !isSafeIdentifier(compareCol) || !isSafeIdentifier(compareWith)) return 0;
             String[] valid = {"=", "!=", ">", "<", ">=", "<="};
             boolean validOp = Arrays.stream(valid).anyMatch(op -> op.equals(compareOp));
@@ -320,8 +320,8 @@ public class PopActionService extends BaseService {
             String caseSql = "CASE WHEN COALESCE(\"" + compareCol + "\"::numeric, 0) " + compareOp
                     + " COALESCE(\"" + compareWith + "\"::numeric, 0) THEN ? ELSE ? END";
             List<Object> params = new ArrayList<>();
-            params.add(str(task.get("dbThenValue"), ""));
-            params.add(str(task.get("dbElseValue"), ""));
+            params.add(str(task.get("db_then_value"), ""));
+            params.add(str(task.get("db_else_value"), ""));
             params.add(companyCode);
             params.addAll(lookupValues);
             jdbcTemplate.update(
@@ -334,7 +334,7 @@ public class PopActionService extends BaseService {
                 Map<String, Object> item = i < items.size() ? items.get(i) : new HashMap<>();
                 Object value;
                 if ("linked".equals(valSource)) {
-                    value = item.get(str(task.get("sourceField"), ""));
+                    value = item.get(str(task.get("source_field"), ""));
                 } else {
                     String raw = fixedValue;
                     if ("__CURRENT_USER__".equals(raw)) value = userId;
@@ -368,13 +368,13 @@ public class PopActionService extends BaseService {
                     String pcCol = str(preCondition.get("column"), "");
                     if (!isSafeIdentifier(pcCol)) throw new IllegalArgumentException("유효하지 않은 preCondition 컬럼: " + pcCol);
                     whereSql += " AND \"" + pcCol + "\" = ?";
-                    params.add(preCondition.get("expectedValue"));
+                    params.add(preCondition.get("expected_value"));
                 }
                 int rows = jdbcTemplate.update(
                         "UPDATE \"" + targetTable + "\" SET " + setSql + autoUpd + " " + whereSql,
                         params.toArray());
                 if (preCondition != null && rows == 0)
-                    throw new PreConditionFailException(str(preCondition.get("failMessage"), "조건이 일치하지 않아 처리할 수 없습니다."));
+                    throw new PreConditionFailException(str(preCondition.get("fail_message"), "조건이 일치하지 않아 처리할 수 없습니다."));
                 processed++;
             }
         }
@@ -387,7 +387,7 @@ public class PopActionService extends BaseService {
     // data-delete
     // ──────────────────────────────────────────────────────────────────────────
     private int processDataDelete(Map<String, Object> task, List<Map<String, Object>> items, String companyCode) {
-        String targetTable = str(task.get("targetTable"), "");
+        String targetTable = str(task.get("target_table"), "");
         if (targetTable.isEmpty() || !isSafeIdentifier(targetTable)) return 0;
         String pkCol = getPkColumn(targetTable);
         List<Object> deleteKeys = new ArrayList<>();
@@ -411,9 +411,9 @@ public class PopActionService extends BaseService {
     @SuppressWarnings("unchecked")
     private int[] processCartSave(Map<String, Object> cartChanges, String companyCode) {
         int inserted = 0, updated = 0, deleted = 0;
-        List<Map<String, Object>> toCreate = safeList(cartChanges.get("toCreate"));
-        List<Map<String, Object>> toUpdate = safeList(cartChanges.get("toUpdate"));
-        List<Object> toDelete = (List<Object>) cartChanges.get("toDelete");
+        List<Map<String, Object>> toCreate = safeList(cartChanges.get("to_create"));
+        List<Map<String, Object>> toUpdate = safeList(cartChanges.get("to_update"));
+        List<Object> toDelete = (List<Object>) cartChanges.get("to_delete");
 
         for (Map<String, Object> item : toCreate) {
             List<String> cols = new ArrayList<>();
@@ -468,23 +468,23 @@ public class PopActionService extends BaseService {
                                       List<Map<String, Object>> items, String companyCode) {
         int count = 0;
         for (Map<String, Object> rule : statusChanges) {
-            String targetTable = str(rule.get("targetTable"), "");
-            String targetColumn = str(rule.get("targetColumn"), "");
+            String targetTable = str(rule.get("target_table"), "");
+            String targetColumn = str(rule.get("target_column"), "");
             if (targetTable.isEmpty() || targetColumn.isEmpty()
                     || !isSafeIdentifier(targetTable) || !isSafeIdentifier(targetColumn)) continue;
 
-            String valueType = str(rule.get("valueType"), "fixed");
-            Object fvRaw = rule.get("fixedValue") != null ? rule.get("fixedValue") : rule.get("value");
+            String valueType = str(rule.get("value_type"), "fixed");
+            Object fvRaw = rule.get("fixed_value") != null ? rule.get("fixed_value") : rule.get("value");
             String fixedValue = str(fvRaw, "");
-            String lookupMode = str(rule.get("lookupMode"), "auto");
-            Map<String, Object> conditionalValue = (Map<String, Object>) rule.get("conditionalValue");
+            String lookupMode = str(rule.get("lookup_mode"), "auto");
+            Map<String, Object> conditionalValue = (Map<String, Object>) rule.get("conditional_value");
 
             String itemField;
             String pkColumn;
-            if ("manual".equals(lookupMode) && rule.get("manualItemField") != null && rule.get("manualPkColumn") != null) {
-                String manualPk = str(rule.get("manualPkColumn"), "");
+            if ("manual".equals(lookupMode) && rule.get("manual_item_field") != null && rule.get("manual_pk_column") != null) {
+                String manualPk = str(rule.get("manual_pk_column"), "");
                 if (!isSafeIdentifier(manualPk)) continue;
-                itemField = str(rule.get("manualItemField"), "");
+                itemField = str(rule.get("manual_item_field"), "");
                 pkColumn = manualPk;
             } else if ("cart_items".equals(targetTable)) {
                 itemField = "__cart_id"; pkColumn = "id";
@@ -545,11 +545,11 @@ public class PopActionService extends BaseService {
                                        Map<String, Object> conditionalValue, Map<String, Object> item) {
         if (!"conditional".equals(valueType) || conditionalValue == null) return fixedValue;
         List<Map<String, Object>> conditions = (List<Map<String, Object>>) conditionalValue.get("conditions");
-        if (conditions == null) return str(conditionalValue.get("defaultValue"), fixedValue);
+        if (conditions == null) return str(conditionalValue.get("default_value"), fixedValue);
 
         for (Map<String, Object> cond : conditions) {
-            String actual = str(item.get(str(cond.get("whenColumn"), "")), "");
-            String expected = str(cond.get("whenValue"), "");
+            String actual = str(item.get(str(cond.get("when_column"), "")), "");
+            String expected = str(cond.get("when_value"), "");
             String op = str(cond.get("operator"), "=");
             boolean match;
             switch (op) {
@@ -560,24 +560,24 @@ public class PopActionService extends BaseService {
                 case "<=": match = toDouble(actual) <= toDouble(expected); break;
                 default:   match = actual.equals(expected);
             }
-            if (match) return str(cond.get("thenValue"), "");
+            if (match) return str(cond.get("then_value"), "");
         }
-        return str(conditionalValue.get("defaultValue"), fixedValue);
+        return str(conditionalValue.get("default_value"), fixedValue);
     }
 
     @SuppressWarnings("unchecked")
     private Object resolveHiddenValue(Map<String, Object> hm, Map<String, Object> item, Map<String, Object> fieldValues) {
-        String valueSource = str(hm.get("valueSource"), "");
-        if ("static".equals(valueSource)) return hm.get("staticValue");
+        String valueSource = str(hm.get("value_source"), "");
+        if ("static".equals(valueSource)) return hm.get("static_value");
         if ("json_extract".equals(valueSource)) {
-            String srcCol = str(hm.get("sourceJsonColumn"), "");
-            String srcKey = str(hm.get("sourceJsonKey"), "");
+            String srcCol = str(hm.get("source_json_column"), "");
+            String srcKey = str(hm.get("source_json_key"), "");
             Object jsonCol = item.get(srcCol);
             if (jsonCol instanceof Map) return ((Map<String, Object>) jsonCol).get(srcKey);
             return null;
         }
         if ("db_column".equals(valueSource)) {
-            String srcDbCol = str(hm.get("sourceDbColumn"), "");
+            String srcDbCol = str(hm.get("source_db_column"), "");
             Object v = item.get(srcDbCol);
             return v != null ? v : fieldValues.get(srcDbCol);
         }
@@ -597,9 +597,9 @@ public class PopActionService extends BaseService {
 
     private Map<String, Object> codeEntry(String col, String code, boolean showModal) {
         Map<String, Object> m = new LinkedHashMap<>();
-        m.put("targetColumn", col);
+        m.put("target_column", col);
         m.put("code", code);
-        m.put("showResultModal", showModal);
+        m.put("show_result_modal", showModal);
         return m;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/PopProductionService.java b/backend-spring/src/main/java/com/erp/service/PopProductionService.java
index 02715a87..f2dfc5fb 100644
--- a/backend-spring/src/main/java/com/erp/service/PopProductionService.java
+++ b/backend-spring/src/main/java/com/erp/service/PopProductionService.java
@@ -21,8 +21,8 @@ public class PopProductionService extends BaseService {
      */
     @Transactional
     public Map<String, Object> createWorkProcesses(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
-        String userId = (String) params.get("userId");
+        String companyCode = (String) params.get("company_code");
+        String userId = (String) params.get("user_id");
         Object workInstructionId = params.get("work_instruction_id");
         Object routingVersionId = params.get("routing_version_id");
         Object planQty = params.get("plan_qty");
@@ -139,7 +139,7 @@ public class PopProductionService extends BaseService {
      * D-BE2: 타이머 API (시작/일시정지/재시작)
      */
     public Map<String, Object> controlTimer(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         Object workOrderProcessId = params.get("work_order_process_id");
         String action = (String) params.get("action");
 
diff --git a/backend-spring/src/main/java/com/erp/service/ProcessWorkStandardService.java b/backend-spring/src/main/java/com/erp/service/ProcessWorkStandardService.java
index 90a7f3e1..65ae366d 100644
--- a/backend-spring/src/main/java/com/erp/service/ProcessWorkStandardService.java
+++ b/backend-spring/src/main/java/com/erp/service/ProcessWorkStandardService.java
@@ -19,80 +19,80 @@ public class ProcessWorkStandardService extends BaseService {
     public Map<String, Object> getProcessWorkStandardItemList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        Integer totalObj = sqlSession.selectOne(NS + "getProcessWorkStandardItemListCnt", params);
+        Integer totalObj = sqlSession.selectOne(NS + "get_process_work_standard_item_list_cnt", params);
         int totalCount = totalObj != null ? totalObj : 0;
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getProcessWorkStandardItemList", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_process_work_standard_item_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public List<Map<String, Object>> getProcessWorkStandardRoutingList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getProcessWorkStandardRoutingList", params);
+        return sqlSession.selectList(NS + "get_process_work_standard_routing_list", params);
     }
 
     @Transactional
     public Map<String, Object> setProcessWorkStandardDefaultVersion(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "setProcessWorkStandardDefaultVersion", params);
+        sqlSession.update(NS + "set_process_work_standard_default_version", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> unsetProcessWorkStandardDefaultVersion(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "unsetProcessWorkStandardDefaultVersion", params);
+        sqlSession.update(NS + "unset_process_work_standard_default_version", params);
         return params;
     }
 
     public List<Map<String, Object>> getProcessWorkStandardWorkItemList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getProcessWorkStandardWorkItemList", params);
+        return sqlSession.selectList(NS + "get_process_work_standard_work_item_list", params);
     }
 
     @Transactional
     public Map<String, Object> insertProcessWorkStandardWorkItem(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.insert(NS + "insertProcessWorkStandardWorkItem", params);
+        sqlSession.insert(NS + "insert_process_work_standard_work_item", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateProcessWorkStandardWorkItem(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updateProcessWorkStandardWorkItem", params);
+        sqlSession.update(NS + "update_process_work_standard_work_item", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteProcessWorkStandardWorkItem(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deleteProcessWorkStandardWorkItem", params);
+        sqlSession.delete(NS + "delete_process_work_standard_work_item", params);
         return params;
     }
 
     public List<Map<String, Object>> getProcessWorkStandardWorkItemDetailList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getProcessWorkStandardWorkItemDetailList", params);
+        return sqlSession.selectList(NS + "get_process_work_standard_work_item_detail_list", params);
     }
 
     @Transactional
     public Map<String, Object> insertProcessWorkStandardWorkItemDetail(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.insert(NS + "insertProcessWorkStandardWorkItemDetail", params);
+        sqlSession.insert(NS + "insert_process_work_standard_work_item_detail", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateProcessWorkStandardWorkItemDetail(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.update(NS + "updateProcessWorkStandardWorkItemDetail", params);
+        sqlSession.update(NS + "update_process_work_standard_work_item_detail", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteProcessWorkStandardWorkItemDetail(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deleteProcessWorkStandardWorkItemDetail", params);
+        sqlSession.delete(NS + "delete_process_work_standard_work_item_detail", params);
         return params;
     }
 
@@ -100,24 +100,24 @@ public class ProcessWorkStandardService extends BaseService {
     @SuppressWarnings("unchecked")
     public Map<String, Object> saveAllProcessWorkStandard(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        List<Map<String, Object>> workItems = (List<Map<String, Object>>) params.get("workItems");
+        List<Map<String, Object>> workItems = (List<Map<String, Object>>) params.get("work_items");
         if (workItems != null) {
             for (Map<String, Object> workItem : workItems) {
-                workItem.put("companyCode", params.get("companyCode"));
+                workItem.put("company_code", params.get("company_code"));
                 if (workItem.get("id") != null) {
-                    sqlSession.update(NS + "updateProcessWorkStandardWorkItem", workItem);
+                    sqlSession.update(NS + "update_process_work_standard_work_item", workItem);
                 } else {
-                    sqlSession.insert(NS + "insertProcessWorkStandardWorkItem", workItem);
+                    sqlSession.insert(NS + "insert_process_work_standard_work_item", workItem);
                 }
                 List<Map<String, Object>> details = (List<Map<String, Object>>) workItem.get("details");
                 if (details != null) {
                     for (Map<String, Object> detail : details) {
-                        detail.put("companyCode", params.get("companyCode"));
-                        detail.put("workItemId", workItem.get("id"));
+                        detail.put("company_code", params.get("company_code"));
+                        detail.put("work_item_id", workItem.get("id"));
                         if (detail.get("id") != null) {
-                            sqlSession.update(NS + "updateProcessWorkStandardWorkItemDetail", detail);
+                            sqlSession.update(NS + "update_process_work_standard_work_item_detail", detail);
                         } else {
-                            sqlSession.insert(NS + "insertProcessWorkStandardWorkItemDetail", detail);
+                            sqlSession.insert(NS + "insert_process_work_standard_work_item_detail", detail);
                         }
                     }
                 }
@@ -128,13 +128,13 @@ public class ProcessWorkStandardService extends BaseService {
 
     public List<Map<String, Object>> getProcessWorkStandardRegisteredItemList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getProcessWorkStandardRegisteredItemList", params);
+        return sqlSession.selectList(NS + "get_process_work_standard_registered_item_list", params);
     }
 
     @Transactional
     public Map<String, Object> insertProcessWorkStandardRegisteredItem(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.insert(NS + "insertProcessWorkStandardRegisteredItem", params);
+        sqlSession.insert(NS + "insert_process_work_standard_registered_item", params);
         return params;
     }
 
@@ -145,17 +145,17 @@ public class ProcessWorkStandardService extends BaseService {
         List<Map<String, Object>> items = (List<Map<String, Object>>) params.get("items");
         if (items != null) {
             for (Map<String, Object> item : items) {
-                item.put("companyCode", params.get("companyCode"));
+                item.put("company_code", params.get("company_code"));
             }
         }
-        sqlSession.insert(NS + "insertProcessWorkStandardRegisteredItemBatch", params);
+        sqlSession.insert(NS + "insert_process_work_standard_registered_item_batch", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> deleteProcessWorkStandardRegisteredItem(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        sqlSession.delete(NS + "deleteProcessWorkStandardRegisteredItem", params);
+        sqlSession.delete(NS + "delete_process_work_standard_registered_item", params);
         return params;
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/ProductionService.java b/backend-spring/src/main/java/com/erp/service/ProductionService.java
index 59b65617..a7da0726 100644
--- a/backend-spring/src/main/java/com/erp/service/ProductionService.java
+++ b/backend-spring/src/main/java/com/erp/service/ProductionService.java
@@ -26,10 +26,10 @@ public class ProductionService extends BaseService {
     // ─── 수주 데이터 조회 (품목별 그룹핑) ───
 
     public List<Map<String, Object>> getOrderSummary(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
-        String itemCode = (String) params.get("itemCode");
-        String itemName = (String) params.get("itemName");
-        boolean excludePlanned = "true".equals(String.valueOf(params.getOrDefault("excludePlanned", "false")));
+        String companyCode = (String) params.get("company_code");
+        String itemCode = (String) params.get("item_code");
+        String itemName = (String) params.get("item_name");
+        boolean excludePlanned = "true".equals(String.valueOf(params.getOrDefault("exclude_planned", "false")));
 
         List<String> conditions = new ArrayList<>();
         List<Object> args = new ArrayList<>();
@@ -308,8 +308,8 @@ public class ProductionService extends BaseService {
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("summary", summary);
         result.put("previews", previews);
-        result.put("deletedSchedules", deletedSchedules);
-        result.put("keptSchedules", keptSchedules);
+        result.put("deleted_schedules", deletedSchedules);
+        result.put("kept_schedules", keptSchedules);
         log.info("자동 스케줄 미리보기: companyCode={}, summary={}", companyCode, summary);
         return result;
     }
@@ -326,7 +326,7 @@ public class ProductionService extends BaseService {
         int deletedCount = 0;
         int keptCount = 0;
         List<Map<String, Object>> newSchedules = new ArrayList<>();
-        String todayStr = LocalDate.now().format(DateTimeFormatter.ofPattern("yyyyMMdd"));
+        String todayStr = LocalDate.now().format(DateTimeFormatter.ofPattern("yyyy_m_mdd"));
 
         for (Map<String, Object> item : items) {
             String itemCode = (String) item.get("item_code");
@@ -486,8 +486,8 @@ public class ProductionService extends BaseService {
     // ─── 반제품 계획 미리보기 ───
 
     public Map<String, Object> previewSemiSchedule(String companyCode, List<Long> planIds, Map<String, Object> options) {
-        boolean considerStock = Boolean.TRUE.equals(options.get("considerStock")) ||
-            "true".equals(String.valueOf(options.getOrDefault("considerStock", "false")));
+        boolean considerStock = Boolean.TRUE.equals(options.get("consider_stock")) ||
+            "true".equals(String.valueOf(options.getOrDefault("consider_stock", "false")));
 
         String placeholders = planIds.stream().map(i -> "?").collect(Collectors.joining(", "));
         List<Object> args = new ArrayList<>();
@@ -572,8 +572,8 @@ public class ProductionService extends BaseService {
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("summary", summary);
         result.put("previews", previews);
-        result.put("deletedSchedules", deletedSchedules);
-        result.put("keptSchedules", keptSchedules);
+        result.put("deleted_schedules", deletedSchedules);
+        result.put("kept_schedules", keptSchedules);
         return result;
     }
 
@@ -581,8 +581,8 @@ public class ProductionService extends BaseService {
 
     @Transactional
     public Map<String, Object> generateSemiSchedule(String companyCode, List<Long> planIds, Map<String, Object> options, String createdBy) {
-        boolean considerStock = Boolean.TRUE.equals(options.get("considerStock")) ||
-            "true".equals(String.valueOf(options.getOrDefault("considerStock", "false")));
+        boolean considerStock = Boolean.TRUE.equals(options.get("consider_stock")) ||
+            "true".equals(String.valueOf(options.getOrDefault("consider_stock", "false")));
 
         String placeholders = planIds.stream().map(i -> "?").collect(Collectors.joining(", "));
         List<Object> args = new ArrayList<>();
@@ -602,7 +602,7 @@ public class ProductionService extends BaseService {
         }
 
         List<Map<String, Object>> newSemiPlans = new ArrayList<>();
-        String todayStr = LocalDate.now().format(DateTimeFormatter.ofPattern("yyyyMMdd"));
+        String todayStr = LocalDate.now().format(DateTimeFormatter.ofPattern("yyyy_m_mdd"));
 
         for (Map<String, Object> plan : plans) {
             String itemCode = (String) plan.get("item_code");
diff --git a/backend-spring/src/main/java/com/erp/service/ReportService.java b/backend-spring/src/main/java/com/erp/service/ReportService.java
index 55fd160b..c5a7c43d 100644
--- a/backend-spring/src/main/java/com/erp/service/ReportService.java
+++ b/backend-spring/src/main/java/com/erp/service/ReportService.java
@@ -39,8 +39,8 @@ public class ReportService extends BaseService {
         Map<String, Object> report = sqlSession.selectOne("report.getReportInfo", params);
         if (report == null) return null;
 
-        String reportId = String.valueOf(params.get("reportId"));
-        Map<String, Object> qp = Map.of("reportId", reportId);
+        String reportId = String.valueOf(params.get("report_id"));
+        Map<String, Object> qp = Map.of("report_id", reportId);
 
         Map<String, Object> layout = sqlSession.selectOne("report.getReportLayout", qp);
         List<Map<String, Object>> queries = sqlSession.selectList("report.getReportQueryList", qp);
@@ -55,20 +55,20 @@ public class ReportService extends BaseService {
         Map<String, Object> result = new LinkedHashMap<>(report);
         result.put("layout", layout);
         result.put("queries", queries != null ? queries : List.of());
-        result.put("menuObjids", menuObjids);
+        result.put("menu_objids", menuObjids);
         return result;
     }
 
     @Transactional
     public Map<String, Object> createReport(Map<String, Object> params) {
         String reportId = "RPT_" + UUID.randomUUID().toString().replace("-", "").substring(0, 20);
-        params.put("reportId", reportId);
+        params.put("report_id", reportId);
         sqlSession.insert("report.insertReport", params);
 
         // 템플릿이 있으면 레이아웃 복사
-        String templateId = (String) params.get("templateId");
+        String templateId = (String) params.get("template_id");
         if (templateId != null && !templateId.isEmpty()) {
-            Map<String, Object> tp = Map.of("templateId", templateId);
+            Map<String, Object> tp = Map.of("template_id", templateId);
             Map<String, Object> template = sqlSession.selectOne("report.getReportTemplateById", tp);
             if (template != null && template.get("layout_config") != null) {
                 String layoutJson = String.valueOf(template.get("layout_config"));
@@ -77,17 +77,17 @@ public class ReportService extends BaseService {
                         layoutJson, new TypeReference<>() {});
                     String layoutId = "LAY_" + UUID.randomUUID().toString().replace("-", "").substring(0, 20);
                     Map<String, Object> lp = new HashMap<>();
-                    lp.put("layoutId", layoutId);
-                    lp.put("reportId", reportId);
-                    lp.put("canvasWidth", layoutConfig.getOrDefault("width", 210));
-                    lp.put("canvasHeight", layoutConfig.getOrDefault("height", 297));
-                    lp.put("pageOrientation", layoutConfig.getOrDefault("orientation", "portrait"));
-                    lp.put("marginTop", 20);
-                    lp.put("marginBottom", 20);
-                    lp.put("marginLeft", 20);
-                    lp.put("marginRight", 20);
+                    lp.put("layout_id", layoutId);
+                    lp.put("report_id", reportId);
+                    lp.put("canvas_width", layoutConfig.getOrDefault("width", 210));
+                    lp.put("canvas_height", layoutConfig.getOrDefault("height", 297));
+                    lp.put("page_orientation", layoutConfig.getOrDefault("orientation", "portrait"));
+                    lp.put("margin_top", 20);
+                    lp.put("margin_bottom", 20);
+                    lp.put("margin_left", 20);
+                    lp.put("margin_right", 20);
                     lp.put("components", "[]");
-                    lp.put("createdBy", params.get("createdBy"));
+                    lp.put("created_by", params.get("created_by"));
                     sqlSession.insert("report.insertReportLayout", lp);
                 } catch (Exception e) {
                     log.warn("템플릿 레이아웃 복사 실패: {}", e.getMessage());
@@ -96,7 +96,7 @@ public class ReportService extends BaseService {
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("reportId", reportId);
+        result.put("report_id", reportId);
         return result;
     }
 
@@ -108,8 +108,8 @@ public class ReportService extends BaseService {
 
     @Transactional
     public Map<String, Object> deleteReport(Map<String, Object> params) {
-        String reportId = String.valueOf(params.get("reportId"));
-        Map<String, Object> rp = Map.of("reportId", reportId);
+        String reportId = String.valueOf(params.get("report_id"));
+        Map<String, Object> rp = Map.of("report_id", reportId);
         sqlSession.delete("report.deleteReportQueriesByReportId", rp);
         sqlSession.delete("report.deleteReportLayout", rp);
         sqlSession.delete("report.deleteReportMenuMappingsByReportId", rp);
@@ -119,48 +119,48 @@ public class ReportService extends BaseService {
 
     @Transactional
     public Map<String, Object> copyReport(Map<String, Object> params) {
-        String reportId = String.valueOf(params.get("reportId"));
-        String userId = (String) params.getOrDefault("userId", "SYSTEM");
-        Map<String, Object> qp = Map.of("reportId", reportId, "companyCode", params.getOrDefault("companyCode", "*"));
+        String reportId = String.valueOf(params.get("report_id"));
+        String userId = (String) params.getOrDefault("user_id", "SYSTEM");
+        Map<String, Object> qp = Map.of("report_id", reportId, "company_code", params.getOrDefault("company_code", "*"));
 
         Map<String, Object> original = sqlSession.selectOne("report.getReportInfo", qp);
         if (original == null) return null;
 
         String newReportId = "RPT_" + UUID.randomUUID().toString().replace("-", "").substring(0, 20);
         Map<String, Object> newReport = new HashMap<>(original);
-        newReport.put("reportId", newReportId);
-        newReport.put("reportNameKor", original.get("report_name_kor") + " (복사)");
+        newReport.put("report_id", newReportId);
+        newReport.put("report_name_kor", original.get("report_name_kor") + " (복사)");
         Object eng = original.get("report_name_eng");
-        newReport.put("reportNameEng", eng != null ? eng + " (Copy)" : null);
-        newReport.put("createdBy", userId);
+        newReport.put("report_name_eng", eng != null ? eng + " (Copy)" : null);
+        newReport.put("created_by", userId);
         sqlSession.insert("report.insertReport", newReport);
 
-        Map<String, Object> origLayout = sqlSession.selectOne("report.getReportLayout", Map.of("reportId", reportId));
+        Map<String, Object> origLayout = sqlSession.selectOne("report.getReportLayout", Map.of("report_id", reportId));
         if (origLayout != null) {
             String newLayoutId = "LAY_" + UUID.randomUUID().toString().replace("-", "").substring(0, 20);
             Map<String, Object> lp = new HashMap<>(origLayout);
-            lp.put("layoutId", newLayoutId);
-            lp.put("reportId", newReportId);
-            lp.put("createdBy", userId);
+            lp.put("layout_id", newLayoutId);
+            lp.put("report_id", newReportId);
+            lp.put("created_by", userId);
             lp.put("components", origLayout.getOrDefault("components", "[]"));
             sqlSession.insert("report.insertReportLayout", lp);
         }
 
-        List<Map<String, Object>> origQueries = sqlSession.selectList("report.getReportQueryList", Map.of("reportId", reportId));
+        List<Map<String, Object>> origQueries = sqlSession.selectList("report.getReportQueryList", Map.of("report_id", reportId));
         if (origQueries != null) {
             for (Map<String, Object> q : origQueries) {
                 String newQueryId = "QRY_" + UUID.randomUUID().toString().replace("-", "").substring(0, 20);
                 Map<String, Object> qNew = new HashMap<>(q);
-                qNew.put("queryId", newQueryId);
-                qNew.put("reportId", newReportId);
-                qNew.put("createdBy", userId);
+                qNew.put("query_id", newQueryId);
+                qNew.put("report_id", newReportId);
+                qNew.put("created_by", userId);
                 qNew.put("parameters", q.getOrDefault("parameters", "[]"));
                 sqlSession.insert("report.insertReportQuery", qNew);
             }
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("reportId", newReportId);
+        result.put("report_id", newReportId);
         return result;
     }
 
@@ -172,11 +172,11 @@ public class ReportService extends BaseService {
 
     @Transactional
     public Map<String, Object> saveLayout(Map<String, Object> params) {
-        String reportId = String.valueOf(params.get("reportId"));
-        String userId = (String) params.getOrDefault("userId", "SYSTEM");
+        String reportId = String.valueOf(params.get("report_id"));
+        String userId = (String) params.getOrDefault("user_id", "SYSTEM");
 
         // layoutConfig 파싱
-        Object layoutConfigObj = params.get("layoutConfig");
+        Object layoutConfigObj = params.get("layout_config");
         Map<String, Object> layoutConfig = new HashMap<>();
         if (layoutConfigObj instanceof Map) {
             layoutConfig = (Map<String, Object>) layoutConfigObj;
@@ -203,24 +203,24 @@ public class ReportService extends BaseService {
         }
 
         // layout upsert
-        Map<String, Object> existing = sqlSession.selectOne("report.getReportLayout", Map.of("reportId", reportId));
+        Map<String, Object> existing = sqlSession.selectOne("report.getReportLayout", Map.of("report_id", reportId));
         Map<String, Object> lp = new HashMap<>();
-        lp.put("reportId", reportId);
-        lp.put("canvasWidth", canvasWidth);
-        lp.put("canvasHeight", canvasHeight);
-        lp.put("pageOrientation", orientation);
-        lp.put("marginTop", toInt(margins.getOrDefault("top", 20)));
-        lp.put("marginBottom", toInt(margins.getOrDefault("bottom", 20)));
-        lp.put("marginLeft", toInt(margins.getOrDefault("left", 20)));
-        lp.put("marginRight", toInt(margins.getOrDefault("right", 20)));
+        lp.put("report_id", reportId);
+        lp.put("canvas_width", canvasWidth);
+        lp.put("canvas_height", canvasHeight);
+        lp.put("page_orientation", orientation);
+        lp.put("margin_top", toInt(margins.getOrDefault("top", 20)));
+        lp.put("margin_bottom", toInt(margins.getOrDefault("bottom", 20)));
+        lp.put("margin_left", toInt(margins.getOrDefault("left", 20)));
+        lp.put("margin_right", toInt(margins.getOrDefault("right", 20)));
         lp.put("components", componentsJson);
-        lp.put("updatedBy", userId);
-        lp.put("createdBy", userId);
+        lp.put("updated_by", userId);
+        lp.put("created_by", userId);
 
         if (existing != null) {
             sqlSession.update("report.updateReportLayout", lp);
         } else {
-            lp.put("layoutId", "LAY_" + UUID.randomUUID().toString().replace("-", "").substring(0, 20));
+            lp.put("layout_id", "LAY_" + UUID.randomUUID().toString().replace("-", "").substring(0, 20));
             sqlSession.insert("report.insertReportLayout", lp);
         }
 
@@ -229,17 +229,17 @@ public class ReportService extends BaseService {
         if (queriesObj instanceof List) {
             List<Map<String, Object>> queries = (List<Map<String, Object>>) queriesObj;
             if (!queries.isEmpty()) {
-                sqlSession.delete("report.deleteReportQueriesByReportId", Map.of("reportId", reportId));
+                sqlSession.delete("report.deleteReportQueriesByReportId", Map.of("report_id", reportId));
                 for (int i = 0; i < queries.size(); i++) {
                     Map<String, Object> q = queries.get(i);
                     String queryId = q.get("id") != null ? String.valueOf(q.get("id"))
                         : "QRY_" + UUID.randomUUID().toString().replace("-", "").substring(0, 20);
                     Map<String, Object> qp = new HashMap<>();
-                    qp.put("queryId", queryId);
-                    qp.put("reportId", reportId);
-                    qp.put("queryName", q.get("name"));
-                    qp.put("queryType", q.get("type"));
-                    qp.put("sqlQuery", q.get("sqlQuery"));
+                    qp.put("query_id", queryId);
+                    qp.put("report_id", reportId);
+                    qp.put("query_name", q.get("name"));
+                    qp.put("query_type", q.get("type"));
+                    qp.put("sql_query", q.get("sql_query"));
                     Object paramList = q.get("parameters");
                     try {
                         qp.put("parameters", paramList != null
@@ -247,38 +247,38 @@ public class ReportService extends BaseService {
                     } catch (Exception e) {
                         qp.put("parameters", "[]");
                     }
-                    qp.put("externalConnectionId", q.get("externalConnectionId"));
-                    qp.put("displayOrder", i);
-                    qp.put("createdBy", userId);
+                    qp.put("external_connection_id", q.get("external_connection_id"));
+                    qp.put("display_order", i);
+                    qp.put("created_by", userId);
                     sqlSession.insert("report.insertReportQuery", qp);
                 }
             }
         }
 
         // 메뉴 매핑 저장
-        Object menuObjidsObj = params.get("menuObjids");
+        Object menuObjidsObj = params.get("menu_objids");
         if (menuObjidsObj instanceof List) {
             List<Object> menuObjids = (List<Object>) menuObjidsObj;
-            sqlSession.delete("report.deleteReportMenuMappingsByReportId", Map.of("reportId", reportId));
+            sqlSession.delete("report.deleteReportMenuMappingsByReportId", Map.of("report_id", reportId));
             if (!menuObjids.isEmpty()) {
                 // 회사코드 조회
                 Map<String, Object> rInfo = sqlSession.selectOne("report.getReportInfo",
-                    Map.of("reportId", reportId, "companyCode", "*"));
+                    Map.of("report_id", reportId, "company_code", "*"));
                 String companyCode = rInfo != null
                     ? String.valueOf(rInfo.getOrDefault("company_code", "*")) : "*";
                 for (Object menuObjid : menuObjids) {
                     Map<String, Object> mp = new HashMap<>();
-                    mp.put("reportId", reportId);
-                    mp.put("menuObjid", menuObjid);
-                    mp.put("companyCode", companyCode);
-                    mp.put("createdBy", userId);
+                    mp.put("report_id", reportId);
+                    mp.put("menu_objid", menuObjid);
+                    mp.put("company_code", companyCode);
+                    mp.put("created_by", userId);
                     sqlSession.insert("report.insertReportMenuMapping", mp);
                 }
             }
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("reportId", reportId);
+        result.put("report_id", reportId);
         result.put("success", true);
         return result;
     }
@@ -286,12 +286,12 @@ public class ReportService extends BaseService {
     // ── Query Execution ───────────────────────────────────────────────────────
 
     public Map<String, Object> executeQuery(Map<String, Object> params) {
-        String reportId = String.valueOf(params.get("reportId"));
-        String queryId = String.valueOf(params.get("queryId"));
+        String reportId = String.valueOf(params.get("report_id"));
+        String queryId = String.valueOf(params.get("query_id"));
         Map<String, Object> parameters = params.get("parameters") instanceof Map
             ? (Map<String, Object>) params.get("parameters") : new HashMap<>();
-        String directSql = (String) params.get("sqlQuery");
-        Object extConnObj = params.get("externalConnectionId");
+        String directSql = (String) params.get("sql_query");
+        Object extConnObj = params.get("external_connection_id");
 
         String sqlQuery;
         Long connectionId = null;
@@ -301,7 +301,7 @@ public class ReportService extends BaseService {
             connectionId = extConnObj != null ? toLong(extConnObj) : null;
         } else {
             Map<String, Object> qRow = sqlSession.selectOne("report.getReportQueryById",
-                Map.of("queryId", queryId, "reportId", reportId));
+                Map.of("query_id", queryId, "report_id", reportId));
             if (qRow == null) throw new NoSuchElementException("쿼리를 찾을 수 없습니다.");
             sqlQuery = String.valueOf(qRow.get("sql_query"));
             Object extId = qRow.get("external_connection_id");
@@ -350,13 +350,13 @@ public class ReportService extends BaseService {
     @Transactional
     public Map<String, Object> createTemplate(Map<String, Object> params) {
         String templateId = "TPL_" + UUID.randomUUID().toString().replace("-", "").substring(0, 20);
-        params.put("templateId", templateId);
+        params.put("template_id", templateId);
         // layoutConfig/defaultQueries가 객체면 JSON 문자열로 변환
-        serializeJsonField(params, "layoutConfig");
-        serializeJsonField(params, "defaultQueries");
+        serializeJsonField(params, "layout_config");
+        serializeJsonField(params, "default_queries");
         sqlSession.insert("report.insertReportTemplate", params);
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("templateId", templateId);
+        result.put("template_id", templateId);
         return result;
     }
 
@@ -373,17 +373,17 @@ public class ReportService extends BaseService {
 
     @Transactional
     public Map<String, Object> saveAsTemplate(Map<String, Object> params) {
-        String reportId = String.valueOf(params.get("reportId"));
-        String userId = (String) params.getOrDefault("userId", "SYSTEM");
-        Map<String, Object> companyFilter = Map.of("reportId", reportId, "companyCode", "*");
+        String reportId = String.valueOf(params.get("report_id"));
+        String userId = (String) params.getOrDefault("user_id", "SYSTEM");
+        Map<String, Object> companyFilter = Map.of("report_id", reportId, "company_code", "*");
 
         Map<String, Object> report = sqlSession.selectOne("report.getReportInfo", companyFilter);
         if (report == null) throw new NoSuchElementException("리포트를 찾을 수 없습니다.");
 
-        Map<String, Object> layout = sqlSession.selectOne("report.getReportLayout", Map.of("reportId", reportId));
+        Map<String, Object> layout = sqlSession.selectOne("report.getReportLayout", Map.of("report_id", reportId));
         if (layout == null) throw new IllegalStateException("레이아웃을 찾을 수 없습니다.");
 
-        List<Map<String, Object>> queries = sqlSession.selectList("report.getReportQueryList", Map.of("reportId", reportId));
+        List<Map<String, Object>> queries = sqlSession.selectList("report.getReportQueryList", Map.of("report_id", reportId));
 
         Map<String, Object> layoutConfig = new LinkedHashMap<>();
         layoutConfig.put("width", layout.get("canvas_width"));
@@ -408,24 +408,24 @@ public class ReportService extends BaseService {
                 Map<String, Object> dq = new LinkedHashMap<>();
                 dq.put("name", q.get("query_name"));
                 dq.put("type", q.get("query_type"));
-                dq.put("sqlQuery", q.get("sql_query"));
+                dq.put("sql_query", q.get("sql_query"));
                 dq.put("parameters", q.getOrDefault("parameters", "[]"));
-                dq.put("externalConnectionId", q.get("external_connection_id"));
-                dq.put("displayOrder", q.get("display_order"));
+                dq.put("external_connection_id", q.get("external_connection_id"));
+                dq.put("display_order", q.get("display_order"));
                 defaultQueries.add(dq);
             }
         }
 
         Map<String, Object> tp = new HashMap<>(params);
-        tp.put("templateType", report.get("report_type"));
-        tp.put("createdBy", userId);
-        tp.put("sortOrder", 999);
+        tp.put("template_type", report.get("report_type"));
+        tp.put("created_by", userId);
+        tp.put("sort_order", 999);
         try {
-            tp.put("layoutConfig", objectMapper.writeValueAsString(layoutConfig));
-            tp.put("defaultQueries", objectMapper.writeValueAsString(defaultQueries));
+            tp.put("layout_config", objectMapper.writeValueAsString(layoutConfig));
+            tp.put("default_queries", objectMapper.writeValueAsString(defaultQueries));
         } catch (Exception e) {
-            tp.put("layoutConfig", "{}");
-            tp.put("defaultQueries", "[]");
+            tp.put("layout_config", "{}");
+            tp.put("default_queries", "[]");
         }
         return createTemplate(tp);
     }
diff --git a/backend-spring/src/main/java/com/erp/service/RiskAlertService.java b/backend-spring/src/main/java/com/erp/service/RiskAlertService.java
index db1922a2..59e380b4 100644
--- a/backend-spring/src/main/java/com/erp/service/RiskAlertService.java
+++ b/backend-spring/src/main/java/com/erp/service/RiskAlertService.java
@@ -34,10 +34,10 @@ public class RiskAlertService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("refreshed", true);
-        result.put("weatherCount", weatherCount);
-        result.put("accidentCount", accidentCount);
-        result.put("roadworkCount", roadworkCount);
-        result.put("totalCount", weatherCount + accidentCount + roadworkCount);
+        result.put("weather_count", weatherCount);
+        result.put("accident_count", accidentCount);
+        result.put("roadwork_count", roadworkCount);
+        result.put("total_count", weatherCount + accidentCount + roadworkCount);
         return result;
     }
 
@@ -45,8 +45,8 @@ public class RiskAlertService extends BaseService {
     // 기상 알림 조회
     // ──────────────────────────────────────────────────────────────────────────
     public List<Map<String, Object>> getWeatherAlerts(Map<String, Object> params) {
-        params.put("alertType", "weather");
-        params.put("isActive", "Y");
+        params.put("alert_type", "weather");
+        params.put("is_active", "Y");
         return sqlSession.selectList("riskAlert.getAlertsByType", params);
     }
 
@@ -54,8 +54,8 @@ public class RiskAlertService extends BaseService {
     // 사고 알림 조회
     // ──────────────────────────────────────────────────────────────────────────
     public List<Map<String, Object>> getAccidentAlerts(Map<String, Object> params) {
-        params.put("alertType", "accident");
-        params.put("isActive", "Y");
+        params.put("alert_type", "accident");
+        params.put("is_active", "Y");
         return sqlSession.selectList("riskAlert.getAlertsByType", params);
     }
 
@@ -63,8 +63,8 @@ public class RiskAlertService extends BaseService {
     // 공사 알림 조회
     // ──────────────────────────────────────────────────────────────────────────
     public List<Map<String, Object>> getRoadworkAlerts(Map<String, Object> params) {
-        params.put("alertType", "roadwork");
-        params.put("isActive", "Y");
+        params.put("alert_type", "roadwork");
+        params.put("is_active", "Y");
         return sqlSession.selectList("riskAlert.getAlertsByType", params);
     }
 
@@ -73,8 +73,8 @@ public class RiskAlertService extends BaseService {
     // ──────────────────────────────────────────────────────────────────────────
     private Map<String, Object> buildTypeParams(Map<String, Object> base, String alertType) {
         Map<String, Object> p = new HashMap<>(base);
-        p.put("alertType", alertType);
-        p.put("isActive", "Y");
+        p.put("alert_type", alertType);
+        p.put("is_active", "Y");
         return p;
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/RoleService.java b/backend-spring/src/main/java/com/erp/service/RoleService.java
index 5b4da3d9..2390a008 100644
--- a/backend-spring/src/main/java/com/erp/service/RoleService.java
+++ b/backend-spring/src/main/java/com/erp/service/RoleService.java
@@ -47,11 +47,11 @@ public class RoleService extends BaseService {
         Object objid = params.get("objid");
         // 연관 데이터 먼저 삭제
         Map<String, Object> memberParams = new HashMap<>();
-        memberParams.put("masterObjid", objid);
+        memberParams.put("master_objid", objid);
         sqlSession.delete("role.deleteAllRoleMembers", memberParams);
 
         Map<String, Object> menuParams = new HashMap<>();
-        menuParams.put("authObjid", objid);
+        menuParams.put("auth_objid", objid);
         sqlSession.delete("role.deleteMenuPermissions", menuParams);
 
         sqlSession.delete("role.deleteRoleGroup", params);
@@ -68,23 +68,23 @@ public class RoleService extends BaseService {
 
     @Transactional
     public void addRoleMembers(Map<String, Object> params) {
-        List<String> userIds = getStringList(params, "userIds");
+        List<String> userIds = getStringList(params, "user_ids");
         if (userIds.isEmpty()) return;
 
         Map<String, Object> insertParams = new HashMap<>(params);
-        insertParams.put("userIds", userIds);
+        insertParams.put("user_ids", userIds);
         sqlSession.insert("role.insertRoleMembers", insertParams);
     }
 
     @Transactional
     public void updateRoleMembers(Map<String, Object> params) {
-        Object masterObjid = params.get("masterObjid");
-        List<String> newUserIds = getStringList(params, "userIds");
+        Object masterObjid = params.get("master_objid");
+        List<String> newUserIds = getStringList(params, "user_ids");
         String writer = (String) params.getOrDefault("writer", "SYSTEM");
 
         // 기존 멤버 조회
         Map<String, Object> findParams = new HashMap<>();
-        findParams.put("masterObjid", masterObjid);
+        findParams.put("master_objid", masterObjid);
         List<Map<String, Object>> existingMembers = sqlSession.selectList("role.getRoleMemberList", findParams);
         List<String> existingIds = existingMembers.stream()
                 .map(m -> (String) m.get("user_id"))
@@ -101,15 +101,15 @@ public class RoleService extends BaseService {
 
         if (!toAdd.isEmpty()) {
             Map<String, Object> addParams = new HashMap<>();
-            addParams.put("masterObjid", masterObjid);
-            addParams.put("userIds", toAdd);
+            addParams.put("master_objid", masterObjid);
+            addParams.put("user_ids", toAdd);
             addParams.put("writer", writer);
             sqlSession.insert("role.insertRoleMembers", addParams);
         }
         if (!toRemove.isEmpty()) {
             Map<String, Object> removeParams = new HashMap<>();
-            removeParams.put("masterObjid", masterObjid);
-            removeParams.put("userIds", toRemove);
+            removeParams.put("master_objid", masterObjid);
+            removeParams.put("user_ids", toRemove);
             sqlSession.delete("role.deleteRoleMembers", removeParams);
         }
         log.info("권한 그룹 멤버 업데이트: masterObjid={}, added={}, removed={}",
@@ -118,11 +118,11 @@ public class RoleService extends BaseService {
 
     @Transactional
     public void removeRoleMembers(Map<String, Object> params) {
-        List<String> userIds = getStringList(params, "userIds");
+        List<String> userIds = getStringList(params, "user_ids");
         if (userIds.isEmpty()) return;
 
         Map<String, Object> deleteParams = new HashMap<>(params);
-        deleteParams.put("userIds", userIds);
+        deleteParams.put("user_ids", userIds);
         sqlSession.delete("role.deleteRoleMembers", deleteParams);
     }
 
@@ -136,18 +136,18 @@ public class RoleService extends BaseService {
 
     @Transactional
     public void setMenuPermissions(Map<String, Object> params) {
-        Object authObjid = params.get("authObjid");
+        Object authObjid = params.get("auth_objid");
         List<?> permissions = (List<?>) params.get("permissions");
         String writer = (String) params.getOrDefault("writer", "SYSTEM");
 
         // 기존 권한 전체 삭제 후 재등록
         Map<String, Object> deleteParams = new HashMap<>();
-        deleteParams.put("authObjid", authObjid);
+        deleteParams.put("auth_objid", authObjid);
         sqlSession.delete("role.deleteMenuPermissions", deleteParams);
 
         if (permissions != null && !permissions.isEmpty()) {
             Map<String, Object> insertParams = new HashMap<>();
-            insertParams.put("authObjid", authObjid);
+            insertParams.put("auth_objid", authObjid);
             insertParams.put("permissions", permissions);
             insertParams.put("writer", writer);
             sqlSession.insert("role.insertMenuPermissions", insertParams);
diff --git a/backend-spring/src/main/java/com/erp/service/SalesReportService.java b/backend-spring/src/main/java/com/erp/service/SalesReportService.java
index 8a393d67..d9c01eb7 100644
--- a/backend-spring/src/main/java/com/erp/service/SalesReportService.java
+++ b/backend-spring/src/main/java/com/erp/service/SalesReportService.java
@@ -23,8 +23,8 @@ public class SalesReportService extends BaseService {
     public Map<String, Object> getSalesReportList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getSalesReportListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getSalesReportList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_sales_report_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_sales_report_list", params);
         for (Map<String, Object> row : list) {
             row.put("unit_price", DecimalUtils.toBigDecimal(row.get("unit_price")));
             row.put("order_amt", DecimalUtils.toBigDecimal(row.get("order_amt")));
@@ -36,7 +36,7 @@ public class SalesReportService extends BaseService {
 
     public Map<String, Object> getSalesReportSummary(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> summary = sqlSession.selectOne(NS + "getSalesReportSummary", params);
+        Map<String, Object> summary = sqlSession.selectOne(NS + "get_sales_report_summary", params);
         if (summary != null) {
             summary.put("total_amount", DecimalUtils.toBigDecimal(summary.get("total_amount")));
             summary.put("avg_unit_price", DecimalUtils.toBigDecimal(summary.get("avg_unit_price")));
@@ -48,15 +48,15 @@ public class SalesReportService extends BaseService {
 
     public Map<String, Object> getSalesReportData(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getSalesReportDataRows", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_sales_report_data_rows", params);
         for (Map<String, Object> row : rows) {
             row.put("unit_price", DecimalUtils.toBigDecimal(row.get("unit_price")));
             row.put("order_amt", DecimalUtils.toBigDecimal(row.get("order_amt")));
             row.put("order_qty", DecimalUtils.toBigDecimal(row.get("order_qty")));
             row.put("ship_qty", DecimalUtils.toBigDecimal(row.get("ship_qty")));
         }
-        List<Map<String, Object>> customers = sqlSession.selectList(NS + "getSalesReportCustomers", params);
-        List<Map<String, Object>> statuses = sqlSession.selectList(NS + "getSalesReportStatuses", params);
+        List<Map<String, Object>> customers = sqlSession.selectList(NS + "get_sales_report_customers", params);
+        List<Map<String, Object>> statuses = sqlSession.selectList(NS + "get_sales_report_statuses", params);
 
         // 데이터에서 품목 목록 추출 (중복 제거)
         Map<String, String> itemSet = new LinkedHashMap<>();
@@ -82,8 +82,8 @@ public class SalesReportService extends BaseService {
 
         Map<String, Object> result = new HashMap<>();
         result.put("rows", rows);
-        result.put("filterOptions", filterOptions);
-        result.put("totalCount", rows.size());
+        result.put("filter_options", filterOptions);
+        result.put("total_count", rows.size());
         return result;
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/ScheduleService.java b/backend-spring/src/main/java/com/erp/service/ScheduleService.java
index 746cb061..800c1ac6 100644
--- a/backend-spring/src/main/java/com/erp/service/ScheduleService.java
+++ b/backend-spring/src/main/java/com/erp/service/ScheduleService.java
@@ -21,12 +21,12 @@ public class ScheduleService extends BaseService {
 
     public List<Map<String, Object>> getScheduleList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectList(NS + "getScheduleList", params);
+        return sqlSession.selectList(NS + "get_schedule_list", params);
     }
 
     public Map<String, Object> getScheduleInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.selectOne(NS + "getScheduleInfo", params);
+        return sqlSession.selectOne(NS + "get_schedule_info", params);
     }
 
     /**
@@ -35,11 +35,11 @@ public class ScheduleService extends BaseService {
     @SuppressWarnings("unchecked")
     public Map<String, Object> previewSchedule(Map<String, Object> params) {
         Map<String, Object> config = (Map<String, Object>) params.get("config");
-        List<Map<String, Object>> sourceData = (List<Map<String, Object>>) params.get("sourceData");
+        List<Map<String, Object>> sourceData = (List<Map<String, Object>>) params.get("source_data");
         Map<String, Object> period = (Map<String, Object>) params.get("period");
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
 
-        if (config == null || config.get("scheduleType") == null) {
+        if (config == null || config.get("schedule_type") == null) {
             throw new IllegalArgumentException("스케줄 설정(config)이 필요합니다.");
         }
         if (sourceData == null || sourceData.isEmpty()) {
@@ -53,17 +53,17 @@ public class ScheduleService extends BaseService {
             period.put("end", now.withDayOfMonth(now.lengthOfMonth()).toString());
         }
 
-        String scheduleType = (String) config.get("scheduleType");
+        String scheduleType = (String) config.get("schedule_type");
         Map<String, Object> source = (Map<String, Object>) config.get("source");
         Map<String, Object> resource = (Map<String, Object>) config.get("resource");
         Map<String, Object> rules = config.containsKey("rules") ? (Map<String, Object>) config.get("rules") : new HashMap<>();
 
-        String quantityField = source != null ? (String) source.get("quantityField") : null;
-        String dueDateField = source != null ? (String) source.get("dueDateField") : null;
-        String resourceIdField = resource != null ? (String) resource.get("idField") : null;
-        String resourceNameField = resource != null ? (String) resource.get("nameField") : null;
+        String quantityField = source != null ? (String) source.get("quantity_field") : null;
+        String dueDateField = source != null ? (String) source.get("due_date_field") : null;
+        String resourceIdField = resource != null ? (String) resource.get("id_field") : null;
+        String resourceNameField = resource != null ? (String) resource.get("name_field") : null;
         String resourceType = resource != null ? (String) resource.get("type") : null;
-        int leadTimeDays = rules.containsKey("leadTimeDays") ? ((Number) rules.get("leadTimeDays")).intValue() : 3;
+        int leadTimeDays = rules.containsKey("lead_time_days") ? ((Number) rules.get("lead_time_days")).intValue() : 3;
         String periodEnd = (String) period.get("end");
 
         // 소스 데이터를 리소스별(+기준일)로 그룹화
@@ -132,7 +132,7 @@ public class ScheduleService extends BaseService {
             schedule.put("due_date", effectiveDueDate);
             schedule.put("plan_qty", qty);
             schedule.put("status", "PLANNED");
-            schedule.put("source_table", source != null ? source.get("tableName") : null);
+            schedule.put("source_table", source != null ? source.get("table_name") : null);
             schedule.put("source_group_key", resId);
             schedule.put("auto_generated", true);
             toCreate.add(schedule);
@@ -144,28 +144,28 @@ public class ScheduleService extends BaseService {
             List<String> resourceIds = grouped.keySet().stream()
                     .map(k -> k.split("\\|")[0]).distinct().collect(Collectors.toList());
             Map<String, Object> existParams = new HashMap<>();
-            existParams.put("companyCode", companyCode);
-            existParams.put("scheduleType", scheduleType);
-            existParams.put("resourceIds", resourceIds);
-            existParams.put("periodStart", period.get("start"));
-            existParams.put("periodEnd", period.get("end"));
+            existParams.put("company_code", companyCode);
+            existParams.put("schedule_type", scheduleType);
+            existParams.put("resource_ids", resourceIds);
+            existParams.put("period_start", period.get("start"));
+            existParams.put("period_end", period.get("end"));
             try {
-                toDelete = sqlSession.selectList(NS + "getExistingScheduleList", existParams);
+                toDelete = sqlSession.selectList(NS + "get_existing_schedule_list", existParams);
             } catch (Exception e) {
                 log.warn("기존 스케줄 조회 실패: {}", e.getMessage());
             }
         }
 
         Map<String, Object> summary = new LinkedHashMap<>();
-        summary.put("createCount", toCreate.size());
-        summary.put("deleteCount", toDelete.size());
-        summary.put("updateCount", 0);
-        summary.put("totalQty", totalQty);
+        summary.put("create_count", toCreate.size());
+        summary.put("delete_count", toDelete.size());
+        summary.put("update_count", 0);
+        summary.put("total_qty", totalQty);
 
         Map<String, Object> preview = new LinkedHashMap<>();
-        preview.put("toCreate", toCreate);
-        preview.put("toDelete", toDelete);
-        preview.put("toUpdate", Collections.emptyList());
+        preview.put("to_create", toCreate);
+        preview.put("to_delete", toDelete);
+        preview.put("to_update", Collections.emptyList());
         preview.put("summary", summary);
         return preview;
     }
@@ -178,16 +178,16 @@ public class ScheduleService extends BaseService {
     public Map<String, Object> applySchedules(Map<String, Object> params) {
         Map<String, Object> preview = (Map<String, Object>) params.get("preview");
         Map<String, Object> options = (Map<String, Object>) params.get("options");
-        String companyCode = (String) params.get("companyCode");
-        String userId = params.containsKey("userId") ? (String) params.get("userId") : "system";
+        String companyCode = (String) params.get("company_code");
+        String userId = params.containsKey("user_id") ? (String) params.get("user_id") : "system";
 
         if (preview == null) {
             throw new IllegalArgumentException("미리보기(preview)가 필요합니다.");
         }
 
-        List<Map<String, Object>> toDelete = (List<Map<String, Object>>) preview.getOrDefault("toDelete", Collections.emptyList());
-        List<Map<String, Object>> toCreate = (List<Map<String, Object>>) preview.getOrDefault("toCreate", Collections.emptyList());
-        boolean deleteExisting = options == null || !Boolean.FALSE.equals(options.get("deleteExisting"));
+        List<Map<String, Object>> toDelete = (List<Map<String, Object>>) preview.getOrDefault("to_delete", Collections.emptyList());
+        List<Map<String, Object>> toCreate = (List<Map<String, Object>>) preview.getOrDefault("to_create", Collections.emptyList());
+        boolean deleteExisting = options == null || !Boolean.FALSE.equals(options.get("delete_existing"));
 
         int deleted = 0;
         if (deleteExisting && !toDelete.isEmpty()) {
@@ -199,9 +199,9 @@ public class ScheduleService extends BaseService {
                     .filter(Objects::nonNull).collect(Collectors.toList());
             if (!deleteIds.isEmpty()) {
                 Map<String, Object> deleteParams = new HashMap<>();
-                deleteParams.put("companyCode", companyCode);
-                deleteParams.put("idList", deleteIds);
-                sqlSession.delete(NS + "deleteSchedulesByIdList", deleteParams);
+                deleteParams.put("company_code", companyCode);
+                deleteParams.put("id_list", deleteIds);
+                sqlSession.delete(NS + "delete_schedules_by_id_list", deleteParams);
                 deleted = deleteIds.size();
             }
         }
@@ -209,11 +209,11 @@ public class ScheduleService extends BaseService {
         int created = 0;
         for (Map<String, Object> schedule : toCreate) {
             Map<String, Object> insertParams = new HashMap<>(schedule);
-            insertParams.put("companyCode", companyCode);
+            insertParams.put("company_code", companyCode);
             insertParams.put("generated_by", userId);
             insertParams.put("created_by", userId);
             insertParams.put("updated_by", userId);
-            sqlSession.insert(NS + "insertSchedule", insertParams);
+            sqlSession.insert(NS + "insert_schedule", insertParams);
             created++;
         }
 
@@ -226,19 +226,19 @@ public class ScheduleService extends BaseService {
 
     @Transactional
     public int insertSchedule(Map<String, Object> params) {
-        return sqlSession.insert(NS + "insertSchedule", params);
+        return sqlSession.insert(NS + "insert_schedule", params);
     }
 
     @Transactional
     public int updateSchedule(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        return sqlSession.update(NS + "updateSchedule", params);
+        return sqlSession.update(NS + "update_schedule", params);
     }
 
     @Transactional
     public Map<String, Object> deleteSchedule(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        int affected = sqlSession.delete(NS + "deleteSchedule", params);
+        int affected = sqlSession.delete(NS + "delete_schedule", params);
         if (affected == 0) {
             Map<String, Object> result = new HashMap<>();
             result.put("success", false);
@@ -247,11 +247,11 @@ public class ScheduleService extends BaseService {
         }
         try {
             Map<String, Object> historyParams = new HashMap<>();
-            historyParams.put("companyCode", params.get("companyCode"));
-            historyParams.put("scheduleId", params.get("scheduleId"));
+            historyParams.put("company_code", params.get("company_code"));
+            historyParams.put("schedule_id", params.get("schedule_id"));
             historyParams.put("action", "DELETE");
-            historyParams.put("changedBy", params.getOrDefault("userId", "system"));
-            sqlSession.insert(NS + "insertScheduleHistory", historyParams);
+            historyParams.put("changed_by", params.getOrDefault("user_id", "system"));
+            sqlSession.insert(NS + "insert_schedule_history", historyParams);
         } catch (Exception e) {
             log.warn("스케줄 이력 저장 실패 (무시): {}", e.getMessage());
         }
diff --git a/backend-spring/src/main/java/com/erp/service/ScreenEmbeddingService.java b/backend-spring/src/main/java/com/erp/service/ScreenEmbeddingService.java
index 5d10a86f..44e86e51 100644
--- a/backend-spring/src/main/java/com/erp/service/ScreenEmbeddingService.java
+++ b/backend-spring/src/main/java/com/erp/service/ScreenEmbeddingService.java
@@ -46,7 +46,7 @@ public class ScreenEmbeddingService extends BaseService {
         log.info("화면 임베딩 생성: id={}", id);
         Map<String, Object> result = sqlSession.selectOne(
                 "screenEmbedding.getScreenEmbeddingInfo",
-                Map.of("id", id, "companyCode", params.get("companyCode")));
+                Map.of("id", id, "company_code", params.get("company_code")));
         if (result != null) parseJsonFields(result, "config");
         return result;
     }
@@ -64,7 +64,7 @@ public class ScreenEmbeddingService extends BaseService {
         log.info("화면 임베딩 수정: id={}", id);
         Map<String, Object> result = sqlSession.selectOne(
                 "screenEmbedding.getScreenEmbeddingInfo",
-                Map.of("id", id, "companyCode", params.get("companyCode")));
+                Map.of("id", id, "company_code", params.get("company_code")));
         if (result != null) parseJsonFields(result, "config");
         return result;
     }
@@ -91,25 +91,25 @@ public class ScreenEmbeddingService extends BaseService {
 
     @Transactional
     public Map<String, Object> insertScreenDataTransfer(Map<String, Object> params) {
-        params.put("dataReceivers", toJsonString(params.get("dataReceivers")));
-        params.put("buttonConfig",  toJsonString(params.getOrDefault("buttonConfig", new HashMap<>())));
+        params.put("data_receivers", toJsonString(params.get("data_receivers")));
+        params.put("button_config",  toJsonString(params.getOrDefault("button_config", new HashMap<>())));
         sqlSession.insert("screenEmbedding.insertScreenDataTransfer", params);
         long id = toLong(params.get("id"));
         log.info("데이터 전달 설정 생성: id={}", id);
         Map<String, Object> result = sqlSession.selectOne(
                 "screenEmbedding.getScreenDataTransferInfoById",
-                Map.of("id", id, "companyCode", params.get("companyCode")));
+                Map.of("id", id, "company_code", params.get("company_code")));
         if (result != null) parseJsonFields(result, "data_receivers", "button_config");
         return result;
     }
 
     @Transactional
     public Map<String, Object> updateScreenDataTransfer(Map<String, Object> params) {
-        if (params.get("dataReceivers") != null) {
-            params.put("dataReceivers", toJsonString(params.get("dataReceivers")));
+        if (params.get("data_receivers") != null) {
+            params.put("data_receivers", toJsonString(params.get("data_receivers")));
         }
-        if (params.get("buttonConfig") != null) {
-            params.put("buttonConfig", toJsonString(params.get("buttonConfig")));
+        if (params.get("button_config") != null) {
+            params.put("button_config", toJsonString(params.get("button_config")));
         }
         int updated = sqlSession.update(
                 "screenEmbedding.updateScreenDataTransfer", params);
@@ -119,7 +119,7 @@ public class ScreenEmbeddingService extends BaseService {
         log.info("데이터 전달 설정 수정: id={}", id);
         Map<String, Object> result = sqlSession.selectOne(
                 "screenEmbedding.getScreenDataTransferInfoById",
-                Map.of("id", id, "companyCode", params.get("companyCode")));
+                Map.of("id", id, "company_code", params.get("company_code")));
         if (result != null) parseJsonFields(result, "data_receivers", "button_config");
         return result;
     }
@@ -146,62 +146,62 @@ public class ScreenEmbeddingService extends BaseService {
 
     @Transactional
     public Map<String, Object> insertScreenSplitPanel(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
-        String userId      = (String) params.get("userId");
-        Object screenId    = params.get("screenId");
+        String companyCode = (String) params.get("company_code");
+        String userId      = (String) params.get("user_id");
+        Object screenId    = params.get("screen_id");
 
         @SuppressWarnings("unchecked")
-        Map<String, Object> leftEmb  = (Map<String, Object>) params.get("leftEmbedding");
+        Map<String, Object> leftEmb  = (Map<String, Object>) params.get("left_embedding");
         @SuppressWarnings("unchecked")
-        Map<String, Object> rightEmb = (Map<String, Object>) params.get("rightEmbedding");
+        Map<String, Object> rightEmb = (Map<String, Object>) params.get("right_embedding");
         @SuppressWarnings("unchecked")
-        Map<String, Object> dt       = (Map<String, Object>) params.get("dataTransfer");
+        Map<String, Object> dt       = (Map<String, Object>) params.get("data_transfer");
 
         // 1. 좌측 임베딩 생성
         Map<String, Object> leftP = new HashMap<>();
-        leftP.put("parentScreenId", screenId);
-        leftP.put("childScreenId",  leftEmb.get("childScreenId"));
+        leftP.put("parent_screen_id", screenId);
+        leftP.put("child_screen_id",  leftEmb.get("child_screen_id"));
         leftP.put("position",       leftEmb.get("position"));
         leftP.put("mode",           leftEmb.get("mode"));
         leftP.put("config",         toJsonString(leftEmb.getOrDefault("config", new HashMap<>())));
-        leftP.put("companyCode",    companyCode);
-        leftP.put("userId",         userId);
+        leftP.put("company_code",    companyCode);
+        leftP.put("user_id",         userId);
         sqlSession.insert("screenEmbedding.insertScreenEmbedding", leftP);
         long leftEmbeddingId = toLong(leftP.get("id"));
 
         // 2. 우측 임베딩 생성
         Map<String, Object> rightP = new HashMap<>();
-        rightP.put("parentScreenId", screenId);
-        rightP.put("childScreenId",  rightEmb.get("childScreenId"));
+        rightP.put("parent_screen_id", screenId);
+        rightP.put("child_screen_id",  rightEmb.get("child_screen_id"));
         rightP.put("position",       rightEmb.get("position"));
         rightP.put("mode",           rightEmb.get("mode"));
         rightP.put("config",         toJsonString(rightEmb.getOrDefault("config", new HashMap<>())));
-        rightP.put("companyCode",    companyCode);
-        rightP.put("userId",         userId);
+        rightP.put("company_code",    companyCode);
+        rightP.put("user_id",         userId);
         sqlSession.insert("screenEmbedding.insertScreenEmbedding", rightP);
         long rightEmbeddingId = toLong(rightP.get("id"));
 
         // 3. 데이터 전달 설정 생성
         Map<String, Object> dtP = new HashMap<>();
-        dtP.put("sourceScreenId",      dt.get("sourceScreenId"));
-        dtP.put("targetScreenId",      dt.get("targetScreenId"));
-        dtP.put("sourceComponentId",   dt.get("sourceComponentId"));
-        dtP.put("sourceComponentType", dt.get("sourceComponentType"));
-        dtP.put("dataReceivers",       toJsonString(dt.get("dataReceivers")));
-        dtP.put("buttonConfig",        toJsonString(dt.getOrDefault("buttonConfig", new HashMap<>())));
-        dtP.put("companyCode",         companyCode);
-        dtP.put("userId",              userId);
+        dtP.put("source_screen_id",      dt.get("source_screen_id"));
+        dtP.put("target_screen_id",      dt.get("target_screen_id"));
+        dtP.put("source_component_id",   dt.get("source_component_id"));
+        dtP.put("source_component_type", dt.get("source_component_type"));
+        dtP.put("data_receivers",       toJsonString(dt.get("data_receivers")));
+        dtP.put("button_config",        toJsonString(dt.getOrDefault("button_config", new HashMap<>())));
+        dtP.put("company_code",         companyCode);
+        dtP.put("user_id",              userId);
         sqlSession.insert("screenEmbedding.insertScreenDataTransfer", dtP);
         long dataTransferId = toLong(dtP.get("id"));
 
         // 4. 분할 패널 생성
         Map<String, Object> spP = new HashMap<>();
-        spP.put("screenId",         screenId);
-        spP.put("leftEmbeddingId",  leftEmbeddingId);
-        spP.put("rightEmbeddingId", rightEmbeddingId);
-        spP.put("dataTransferId",   dataTransferId);
-        spP.put("layoutConfig",     toJsonString(params.getOrDefault("layoutConfig", new HashMap<>())));
-        spP.put("companyCode",      companyCode);
+        spP.put("screen_id",         screenId);
+        spP.put("left_embedding_id",  leftEmbeddingId);
+        spP.put("right_embedding_id", rightEmbeddingId);
+        spP.put("data_transfer_id",   dataTransferId);
+        spP.put("layout_config",     toJsonString(params.getOrDefault("layout_config", new HashMap<>())));
+        spP.put("company_code",      companyCode);
         sqlSession.insert("screenEmbedding.insertScreenSplitPanel", spP);
         long splitPanelId = toLong(spP.get("id"));
 
@@ -209,7 +209,7 @@ public class ScreenEmbeddingService extends BaseService {
 
         Map<String, Object> fetchP = new HashMap<>();
         fetchP.put("id",          splitPanelId);
-        fetchP.put("companyCode", companyCode);
+        fetchP.put("company_code", companyCode);
         Map<String, Object> result = sqlSession.selectOne(
                 "screenEmbedding.getScreenSplitPanelInfoById", fetchP);
         if (result != null) parseJsonFields(result, "layout_config");
@@ -218,7 +218,7 @@ public class ScreenEmbeddingService extends BaseService {
 
     @Transactional
     public Map<String, Object> updateScreenSplitPanel(Map<String, Object> params) {
-        params.put("layoutConfig", toJsonString(params.get("layoutConfig")));
+        params.put("layout_config", toJsonString(params.get("layout_config")));
         int updated = sqlSession.update(
                 "screenEmbedding.updateScreenSplitPanel", params);
         if (updated == 0) return null;
@@ -227,7 +227,7 @@ public class ScreenEmbeddingService extends BaseService {
         log.info("분할 패널 수정: id={}", id);
         Map<String, Object> fetchP = new HashMap<>();
         fetchP.put("id",          id);
-        fetchP.put("companyCode", params.get("companyCode"));
+        fetchP.put("company_code", params.get("company_code"));
         Map<String, Object> result = sqlSession.selectOne(
                 "screenEmbedding.getScreenSplitPanelInfoById", fetchP);
         if (result != null) parseJsonFields(result, "layout_config");
@@ -241,7 +241,7 @@ public class ScreenEmbeddingService extends BaseService {
                 "screenEmbedding.getScreenSplitPanelInfoById", params);
         if (panel == null) return false;
 
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
 
         // 2. 분할 패널 삭제
         sqlSession.delete("screenEmbedding.deleteScreenSplitPanel", params);
@@ -254,19 +254,19 @@ public class ScreenEmbeddingService extends BaseService {
         if (leftId != null) {
             Map<String, Object> p = new HashMap<>();
             p.put("id", leftId);
-            p.put("companyCode", companyCode);
+            p.put("company_code", companyCode);
             sqlSession.delete("screenEmbedding.deleteScreenEmbedding", p);
         }
         if (rightId != null) {
             Map<String, Object> p = new HashMap<>();
             p.put("id", rightId);
-            p.put("companyCode", companyCode);
+            p.put("company_code", companyCode);
             sqlSession.delete("screenEmbedding.deleteScreenEmbedding", p);
         }
         if (dtId != null) {
             Map<String, Object> p = new HashMap<>();
             p.put("id", dtId);
-            p.put("companyCode", companyCode);
+            p.put("company_code", companyCode);
             sqlSession.delete("screenEmbedding.deleteScreenDataTransfer", p);
         }
 
@@ -282,56 +282,56 @@ public class ScreenEmbeddingService extends BaseService {
     private Map<String, Object> buildSplitPanelResponse(Map<String, Object> row) {
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("id",               row.get("id"));
-        result.put("screenId",         row.get("screenId"));
-        result.put("leftEmbeddingId",  row.get("leftEmbeddingId"));
-        result.put("rightEmbeddingId", row.get("rightEmbeddingId"));
-        result.put("dataTransferId",   row.get("dataTransferId"));
-        result.put("layoutConfig",     parseJson(row.get("layoutConfig")));
-        result.put("companyCode",      row.get("companyCode"));
-        result.put("createdAt",        row.get("createdAt"));
-        result.put("updatedAt",        row.get("updatedAt"));
+        result.put("screen_id",         row.get("screen_id"));
+        result.put("left_embedding_id",  row.get("left_embedding_id"));
+        result.put("right_embedding_id", row.get("right_embedding_id"));
+        result.put("data_transfer_id",   row.get("data_transfer_id"));
+        result.put("layout_config",     parseJson(row.get("layout_config")));
+        result.put("company_code",      row.get("company_code"));
+        result.put("created_at",        row.get("created_at"));
+        result.put("updated_at",        row.get("updated_at"));
 
         // 좌측 임베딩
-        if (row.get("leChildScreenId") != null) {
+        if (row.get("le_child_screen_id") != null) {
             Map<String, Object> le = new LinkedHashMap<>();
-            le.put("id",            row.get("leftEmbeddingId"));
-            le.put("parentScreenId", row.get("leParentScreenId"));
-            le.put("childScreenId",  row.get("leChildScreenId"));
-            le.put("position",       row.get("lePosition"));
-            le.put("mode",           row.get("leMode"));
-            le.put("config",         parseJson(row.get("leConfig")));
-            result.put("leftEmbedding", le);
+            le.put("id",            row.get("left_embedding_id"));
+            le.put("parent_screen_id", row.get("le_parent_screen_id"));
+            le.put("child_screen_id",  row.get("le_child_screen_id"));
+            le.put("position",       row.get("le_position"));
+            le.put("mode",           row.get("le_mode"));
+            le.put("config",         parseJson(row.get("le_config")));
+            result.put("left_embedding", le);
         } else {
-            result.put("leftEmbedding", null);
+            result.put("left_embedding", null);
         }
 
         // 우측 임베딩
-        if (row.get("reChildScreenId") != null) {
+        if (row.get("re_child_screen_id") != null) {
             Map<String, Object> re = new LinkedHashMap<>();
-            re.put("id",            row.get("rightEmbeddingId"));
-            re.put("parentScreenId", row.get("reParentScreenId"));
-            re.put("childScreenId",  row.get("reChildScreenId"));
-            re.put("position",       row.get("rePosition"));
-            re.put("mode",           row.get("reMode"));
-            re.put("config",         parseJson(row.get("reConfig")));
-            result.put("rightEmbedding", re);
+            re.put("id",            row.get("right_embedding_id"));
+            re.put("parent_screen_id", row.get("re_parent_screen_id"));
+            re.put("child_screen_id",  row.get("re_child_screen_id"));
+            re.put("position",       row.get("re_position"));
+            re.put("mode",           row.get("re_mode"));
+            re.put("config",         parseJson(row.get("re_config")));
+            result.put("right_embedding", re);
         } else {
-            result.put("rightEmbedding", null);
+            result.put("right_embedding", null);
         }
 
         // 데이터 전달
-        if (row.get("sourceScreenId") != null) {
+        if (row.get("source_screen_id") != null) {
             Map<String, Object> dt = new LinkedHashMap<>();
-            dt.put("id",                 row.get("dataTransferId"));
-            dt.put("sourceScreenId",     row.get("sourceScreenId"));
-            dt.put("targetScreenId",     row.get("targetScreenId"));
-            dt.put("sourceComponentId",  row.get("sourceComponentId"));
-            dt.put("sourceComponentType", row.get("sourceComponentType"));
-            dt.put("dataReceivers",      parseJson(row.get("dataReceivers")));
-            dt.put("buttonConfig",       parseJson(row.get("buttonConfig")));
-            result.put("dataTransfer", dt);
+            dt.put("id",                 row.get("data_transfer_id"));
+            dt.put("source_screen_id",     row.get("source_screen_id"));
+            dt.put("target_screen_id",     row.get("target_screen_id"));
+            dt.put("source_component_id",  row.get("source_component_id"));
+            dt.put("source_component_type", row.get("source_component_type"));
+            dt.put("data_receivers",      parseJson(row.get("data_receivers")));
+            dt.put("button_config",       parseJson(row.get("button_config")));
+            result.put("data_transfer", dt);
         } else {
-            result.put("dataTransfer", null);
+            result.put("data_transfer", null);
         }
 
         return result;
diff --git a/backend-spring/src/main/java/com/erp/service/ScreenFileService.java b/backend-spring/src/main/java/com/erp/service/ScreenFileService.java
index a723753d..7553335c 100644
--- a/backend-spring/src/main/java/com/erp/service/ScreenFileService.java
+++ b/backend-spring/src/main/java/com/erp/service/ScreenFileService.java
@@ -20,7 +20,7 @@ public class ScreenFileService extends BaseService {
         log.info("화면 컴포넌트 파일 조회 시작: screenId={}", screenId);
 
         Map<String, Object> params = new HashMap<>();
-        params.put("targetObjidPattern", "screen_files:" + screenId + ":%");
+        params.put("target_objid_pattern", "screen_files:" + screenId + ":%");
 
         List<Map<String, Object>> files = sqlSession.selectList(
                 "screenFile.selectScreenComponentFiles", params);
@@ -45,9 +45,9 @@ public class ScreenFileService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("success", true);
-        result.put("componentFiles", componentFiles);
-        result.put("totalFiles", files.size());
-        result.put("componentCount", componentFiles.size());
+        result.put("component_files", componentFiles);
+        result.put("total_files", files.size());
+        result.put("component_count", componentFiles.size());
         return result;
     }
 
@@ -59,7 +59,7 @@ public class ScreenFileService extends BaseService {
         log.info("컴포넌트 파일 조회: screenId={}, componentId={}", screenId, componentId);
 
         Map<String, Object> params = new HashMap<>();
-        params.put("targetObjidPattern", "screen_files:" + screenId + ":" + componentId + ":%");
+        params.put("target_objid_pattern", "screen_files:" + screenId + ":" + componentId + ":%");
 
         List<Map<String, Object>> files = sqlSession.selectList(
                 "screenFile.selectComponentFiles", params);
@@ -74,8 +74,8 @@ public class ScreenFileService extends BaseService {
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("success", true);
         result.put("files", fileList);
-        result.put("componentId", componentId);
-        result.put("screenId", screenId);
+        result.put("component_id", componentId);
+        result.put("screen_id", screenId);
         return result;
     }
 
@@ -84,18 +84,18 @@ public class ScreenFileService extends BaseService {
         Map<String, Object> mapped = new LinkedHashMap<>();
         Object objid = file.get("objid");
         mapped.put("objid", objid != null ? objid.toString() : null);
-        mapped.put("savedFileName", file.get("saved_file_name"));
-        mapped.put("realFileName", file.get("real_file_name"));
+        mapped.put("saved_file_name", file.get("saved_file_name"));
+        mapped.put("real_file_name", file.get("real_file_name"));
 
         Object fileSize = file.get("file_size");
-        mapped.put("fileSize", fileSize != null ? ((Number) fileSize).longValue() : null);
+        mapped.put("file_size", fileSize != null ? ((Number) fileSize).longValue() : null);
 
-        mapped.put("fileExt", file.get("file_ext"));
-        mapped.put("filePath", file.get("file_path"));
-        mapped.put("docType", file.get("doc_type"));
-        mapped.put("docTypeName", file.get("doc_type_name"));
-        mapped.put("targetObjid", file.get("target_objid"));
-        mapped.put("parentTargetObjid", file.get("parent_target_objid"));
+        mapped.put("file_ext", file.get("file_ext"));
+        mapped.put("file_path", file.get("file_path"));
+        mapped.put("doc_type", file.get("doc_type"));
+        mapped.put("doc_type_name", file.get("doc_type_name"));
+        mapped.put("target_objid", file.get("target_objid"));
+        mapped.put("parent_target_objid", file.get("parent_target_objid"));
         mapped.put("writer", file.get("writer"));
 
         Object regdate = file.get("created_date");
diff --git a/backend-spring/src/main/java/com/erp/service/ScreenGroupService.java b/backend-spring/src/main/java/com/erp/service/ScreenGroupService.java
index 549218e5..0930f521 100644
--- a/backend-spring/src/main/java/com/erp/service/ScreenGroupService.java
+++ b/backend-spring/src/main/java/com/erp/service/ScreenGroupService.java
@@ -26,8 +26,8 @@ public class ScreenGroupService extends BaseService {
         params.put("limit", size);
         params.put("offset", (page - 1) * size);
 
-        int total  = sqlSession.selectOne(NS + "countScreenGroups", params);
-        List<Map<String, Object>> groups = sqlSession.selectList(NS + "selectScreenGroups", params);
+        int total  = sqlSession.selectOne(NS + "count_screen_groups", params);
+        List<Map<String, Object>> groups = sqlSession.selectList(NS + "select_screen_groups", params);
 
         // screens 조립 (별도 쿼리)
         if (!groups.isEmpty()) {
@@ -35,10 +35,10 @@ public class ScreenGroupService extends BaseService {
                     .map(g -> g.get("id"))
                     .collect(Collectors.toList());
             Map<String, Object> screenParams = new HashMap<>();
-            screenParams.put("groupIds", groupIds);
-            List<Map<String, Object>> allScreens = sqlSession.selectList(NS + "selectGroupScreensByGroupIds", screenParams);
+            screenParams.put("group_ids", groupIds);
+            List<Map<String, Object>> allScreens = sqlSession.selectList(NS + "select_group_screens_by_group_ids", screenParams);
             Map<Object, List<Map<String, Object>>> byGroup = allScreens.stream()
-                    .collect(Collectors.groupingBy(s -> s.get("groupId")));
+                    .collect(Collectors.groupingBy(s -> s.get("group_id")));
             for (Map<String, Object> g : groups) {
                 g.put("screens", byGroup.getOrDefault(g.get("id"), Collections.emptyList()));
             }
@@ -50,18 +50,18 @@ public class ScreenGroupService extends BaseService {
         result.put("total", total);
         result.put("page", page);
         result.put("size", size);
-        result.put("totalPages", (int) Math.ceil((double) total / size));
+        result.put("total_pages", (int) Math.ceil((double) total / size));
         return result;
     }
 
     public Map<String, Object> getScreenGroup(Map<String, Object> params) {
-        Map<String, Object> group = sqlSession.selectOne(NS + "selectScreenGroupById", params);
+        Map<String, Object> group = sqlSession.selectOne(NS + "select_screen_group_by_id", params);
         if (group == null) return null;
 
         List<Object> groupIds = Collections.singletonList(group.get("id"));
         Map<String, Object> sp = new HashMap<>();
-        sp.put("groupIds", groupIds);
-        List<Map<String, Object>> screens = sqlSession.selectList(NS + "selectGroupScreensByGroupIds", sp);
+        sp.put("group_ids", groupIds);
+        List<Map<String, Object>> screens = sqlSession.selectList(NS + "select_group_screens_by_group_ids", sp);
         group.put("screens", screens);
         return group;
     }
@@ -69,22 +69,22 @@ public class ScreenGroupService extends BaseService {
     @Transactional
     public Map<String, Object> createScreenGroup(Map<String, Object> params) {
         // 부모 그룹 계층 계산
-        Object parentGroupId = params.get("parentGroupId");
+        Object parentGroupId = params.get("parent_group_id");
         int groupLevel = 0;
         String parentHierarchyPath = "";
         if (parentGroupId != null) {
             Map<String, Object> pp = new HashMap<>();
-            pp.put("parentGroupId", parentGroupId);
-            Map<String, Object> parent = sqlSession.selectOne(NS + "selectParentGroupById", pp);
+            pp.put("parent_group_id", parentGroupId);
+            Map<String, Object> parent = sqlSession.selectOne(NS + "select_parent_group_by_id", pp);
             if (parent != null) {
                 groupLevel = toInt(parent.getOrDefault("group_level", 0)) + 1;
                 parentHierarchyPath = (String) parent.getOrDefault("hierarchy_path",
                         "/" + parentGroupId + "/");
             }
         }
-        params.put("groupLevel", groupLevel);
+        params.put("group_level", groupLevel);
 
-        sqlSession.insert(NS + "insertScreenGroup", params);
+        sqlSession.insert(NS + "insert_screen_group", params);
         Object newId = params.get("id");
 
         // hierarchy_path 업데이트
@@ -96,19 +96,19 @@ public class ScreenGroupService extends BaseService {
         }
         Map<String, Object> hp = new HashMap<>();
         hp.put("id", newId);
-        hp.put("hierarchyPath", hierarchyPath);
-        sqlSession.update(NS + "updateScreenGroupHierarchyPath", hp);
+        hp.put("hierarchy_path", hierarchyPath);
+        sqlSession.update(NS + "update_screen_group_hierarchy_path", hp);
 
         Map<String, Object> sp = new HashMap<>();
         sp.put("id", newId);
-        return sqlSession.selectOne(NS + "selectScreenGroupById", sp);
+        return sqlSession.selectOne(NS + "select_screen_group_by_id", sp);
     }
 
     @Transactional
     public Map<String, Object> updateScreenGroup(Map<String, Object> params) {
         Object id = params.get("id");
-        String userCompanyCode = (String) params.get("companyCode");
-        Object parentGroupId = params.get("parentGroupId");
+        String userCompanyCode = (String) params.get("company_code");
+        Object parentGroupId = params.get("parent_group_id");
 
         // 자기 자신을 부모로 지정하는 것 방지
         if (parentGroupId != null && toInt(parentGroupId) == toInt(id)) {
@@ -120,8 +120,8 @@ public class ScreenGroupService extends BaseService {
         String hierarchyPath = "/" + id + "/";
         if (parentGroupId != null) {
             Map<String, Object> pp = new HashMap<>();
-            pp.put("parentGroupId", parentGroupId);
-            Map<String, Object> parent = sqlSession.selectOne(NS + "selectParentGroupById", pp);
+            pp.put("parent_group_id", parentGroupId);
+            Map<String, Object> parent = sqlSession.selectOne(NS + "select_parent_group_by_id", pp);
             if (parent != null) {
                 String parentPath = (String) parent.getOrDefault("hierarchy_path",
                         "/" + parentGroupId + "/");
@@ -133,33 +133,33 @@ public class ScreenGroupService extends BaseService {
                 hierarchyPath = (parentPath + id + "/").replace("//", "/");
             }
         }
-        params.put("groupLevel", groupLevel);
-        params.put("hierarchyPath", hierarchyPath);
+        params.put("group_level", groupLevel);
+        params.put("hierarchy_path", hierarchyPath);
 
         // 최고관리자가 회사 변경하는 경우
-        Object targetCompanyCode = params.get("targetCompanyCode");
+        Object targetCompanyCode = params.get("target_company_code");
         int rows;
         if ("*".equals(userCompanyCode) && targetCompanyCode != null) {
-            rows = sqlSession.update(NS + "updateScreenGroupWithCompany", params);
+            rows = sqlSession.update(NS + "update_screen_group_with_company", params);
         } else {
-            rows = sqlSession.update(NS + "updateScreenGroup", params);
+            rows = sqlSession.update(NS + "update_screen_group", params);
         }
         if (rows == 0) {
             throw new NoSuchElementException("화면 그룹을 찾을 수 없거나 권한이 없습니다.");
         }
         Map<String, Object> sp = new HashMap<>();
         sp.put("id", id);
-        return sqlSession.selectOne(NS + "selectScreenGroupById", sp);
+        return sqlSession.selectOne(NS + "select_screen_group_by_id", sp);
     }
 
     @Transactional
     public void deleteScreenGroup(Map<String, Object> params) {
         Object id = params.get("id");
-        String companyCode = (String) params.get("companyCode");
-        boolean deleteNumberingRules = Boolean.TRUE.equals(params.get("deleteNumberingRules"));
+        String companyCode = (String) params.get("company_code");
+        boolean deleteNumberingRules = Boolean.TRUE.equals(params.get("delete_numbering_rules"));
 
         // 대상 그룹의 company_code 확인
-        Map<String, Object> target = sqlSession.selectOne(NS + "selectScreenGroupForDelete", params);
+        Map<String, Object> target = sqlSession.selectOne(NS + "select_screen_group_for_delete", params);
         if (target == null) {
             throw new NoSuchElementException("화면 그룹을 찾을 수 없습니다.");
         }
@@ -173,42 +173,42 @@ public class ScreenGroupService extends BaseService {
         // 하위 그룹 ID 수집 (재귀)
         Map<String, Object> cp = new HashMap<>();
         cp.put("id", id);
-        cp.put("targetCompanyCode", targetCompanyCode);
-        List<Map<String, Object>> children = sqlSession.selectList(NS + "selectAllChildGroupIds", cp);
+        cp.put("target_company_code", targetCompanyCode);
+        List<Map<String, Object>> children = sqlSession.selectList(NS + "select_all_child_group_ids", cp);
         List<Object> groupIds = children.stream().map(c -> c.get("id")).collect(Collectors.toList());
 
         if (!groupIds.isEmpty()) {
             // 연결된 메뉴 조회 및 삭제
             Map<String, Object> mp = new HashMap<>();
-            mp.put("groupIds", groupIds);
-            mp.put("targetCompanyCode", targetCompanyCode);
-            List<Map<String, Object>> menus = sqlSession.selectList(NS + "selectMenusByGroupIds", mp);
+            mp.put("group_ids", groupIds);
+            mp.put("target_company_code", targetCompanyCode);
+            List<Map<String, Object>> menus = sqlSession.selectList(NS + "select_menus_by_group_ids", mp);
             List<Object> menuObjids = menus.stream().map(m -> m.get("objid")).collect(Collectors.toList());
 
             if (!menuObjids.isEmpty()) {
                 Map<String, Object> delp = new HashMap<>();
-                delp.put("menuObjids", menuObjids);
-                delp.put("targetCompanyCode", targetCompanyCode);
-                sqlSession.delete(NS + "deleteScreenMenuAssignmentsByMenuObjids", delp);
-                sqlSession.delete(NS + "deleteMenusByGroupIds", mp);
+                delp.put("menu_objids", menuObjids);
+                delp.put("target_company_code", targetCompanyCode);
+                sqlSession.delete(NS + "delete_screen_menu_assignments_by_menu_objids", delp);
+                sqlSession.delete(NS + "delete_menus_by_group_ids", mp);
             }
 
             // 채번 규칙 삭제 (최상위 그룹 + 명시 요청)
             if (deleteNumberingRules) {
                 Map<String, Object> rp = new HashMap<>();
                 rp.put("id", id);
-                int isRoot = sqlSession.selectOne(NS + "isRootGroupById", rp);
+                int isRoot = sqlSession.selectOne(NS + "is_root_group_by_id", rp);
                 if (isRoot > 0) {
                     Map<String, Object> nrp = new HashMap<>();
-                    nrp.put("targetCompanyCode", targetCompanyCode);
-                    sqlSession.delete(NS + "deleteNumberingRuleParts", nrp);
-                    sqlSession.delete(NS + "deleteNumberingRules", nrp);
+                    nrp.put("target_company_code", targetCompanyCode);
+                    sqlSession.delete(NS + "delete_numbering_rule_parts", nrp);
+                    sqlSession.delete(NS + "delete_numbering_rules", nrp);
                 }
             }
         }
 
         // 그룹 삭제
-        int deleted = sqlSession.delete(NS + "deleteScreenGroupById", cp);
+        int deleted = sqlSession.delete(NS + "delete_screen_group_by_id", cp);
         if (deleted == 0) {
             throw new NoSuchElementException("화면 그룹을 찾을 수 없거나 권한이 없습니다.");
         }
@@ -220,28 +220,28 @@ public class ScreenGroupService extends BaseService {
 
     @Transactional
     public Map<String, Object> addScreenToGroup(Map<String, Object> params) {
-        sqlSession.insert(NS + "insertGroupScreen", params);
+        sqlSession.insert(NS + "insert_group_screen", params);
         // 삽입 후 조회
-        List<Object> ids = Collections.singletonList(params.get("groupId"));
+        List<Object> ids = Collections.singletonList(params.get("group_id"));
         Map<String, Object> sp = new HashMap<>();
-        sp.put("groupIds", ids);
-        List<Map<String, Object>> screens = sqlSession.selectList(NS + "selectGroupScreensByGroupIds", sp);
+        sp.put("group_ids", ids);
+        List<Map<String, Object>> screens = sqlSession.selectList(NS + "select_group_screens_by_group_ids", sp);
         return screens.stream()
-                .filter(s -> Objects.equals(s.get("screen_id"), params.get("screenId")))
+                .filter(s -> Objects.equals(s.get("screen_id"), params.get("screen_id")))
                 .findFirst()
                 .orElse(params);
     }
 
     @Transactional
     public Map<String, Object> updateScreenInGroup(Map<String, Object> params) {
-        int rows = sqlSession.update(NS + "updateGroupScreen", params);
+        int rows = sqlSession.update(NS + "update_group_screen", params);
         if (rows == 0) throw new NoSuchElementException("연결을 찾을 수 없거나 권한이 없습니다.");
         return params;
     }
 
     @Transactional
     public void removeScreenFromGroup(Map<String, Object> params) {
-        int rows = sqlSession.delete(NS + "deleteGroupScreen", params);
+        int rows = sqlSession.delete(NS + "delete_group_screen", params);
         if (rows == 0) throw new NoSuchElementException("연결을 찾을 수 없거나 권한이 없습니다.");
     }
 
@@ -250,25 +250,25 @@ public class ScreenGroupService extends BaseService {
     // ══════════════════════════════════════════════════════════════
 
     public List<Map<String, Object>> getFieldJoins(Map<String, Object> params) {
-        return sqlSession.selectList(NS + "selectFieldJoins", params);
+        return sqlSession.selectList(NS + "select_field_joins", params);
     }
 
     @Transactional
     public Map<String, Object> createFieldJoin(Map<String, Object> params) {
-        sqlSession.insert(NS + "insertFieldJoin", params);
+        sqlSession.insert(NS + "insert_field_join", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateFieldJoin(Map<String, Object> params) {
-        int rows = sqlSession.update(NS + "updateFieldJoin", params);
+        int rows = sqlSession.update(NS + "update_field_join", params);
         if (rows == 0) throw new NoSuchElementException("필드 조인을 찾을 수 없거나 권한이 없습니다.");
         return params;
     }
 
     @Transactional
     public void deleteFieldJoin(Map<String, Object> params) {
-        int rows = sqlSession.delete(NS + "deleteFieldJoin", params);
+        int rows = sqlSession.delete(NS + "delete_field_join", params);
         if (rows == 0) throw new NoSuchElementException("필드 조인을 찾을 수 없거나 권한이 없습니다.");
     }
 
@@ -277,28 +277,28 @@ public class ScreenGroupService extends BaseService {
     // ══════════════════════════════════════════════════════════════
 
     public List<Map<String, Object>> getDataFlows(Map<String, Object> params) {
-        return sqlSession.selectList(NS + "selectDataFlows", params);
+        return sqlSession.selectList(NS + "select_data_flows", params);
     }
 
     @Transactional
     public Map<String, Object> createDataFlow(Map<String, Object> params) {
         // data_mapping을 JSON 문자열로 변환
-        convertToJsonString(params, "dataMapping");
-        sqlSession.insert(NS + "insertDataFlow", params);
+        convertToJsonString(params, "data_mapping");
+        sqlSession.insert(NS + "insert_data_flow", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateDataFlow(Map<String, Object> params) {
-        convertToJsonString(params, "dataMapping");
-        int rows = sqlSession.update(NS + "updateDataFlow", params);
+        convertToJsonString(params, "data_mapping");
+        int rows = sqlSession.update(NS + "update_data_flow", params);
         if (rows == 0) throw new NoSuchElementException("데이터 흐름을 찾을 수 없거나 권한이 없습니다.");
         return params;
     }
 
     @Transactional
     public void deleteDataFlow(Map<String, Object> params) {
-        int rows = sqlSession.delete(NS + "deleteDataFlow", params);
+        int rows = sqlSession.delete(NS + "delete_data_flow", params);
         if (rows == 0) throw new NoSuchElementException("데이터 흐름을 찾을 수 없거나 권한이 없습니다.");
     }
 
@@ -307,25 +307,25 @@ public class ScreenGroupService extends BaseService {
     // ══════════════════════════════════════════════════════════════
 
     public List<Map<String, Object>> getTableRelations(Map<String, Object> params) {
-        return sqlSession.selectList(NS + "selectTableRelations", params);
+        return sqlSession.selectList(NS + "select_table_relations", params);
     }
 
     @Transactional
     public Map<String, Object> createTableRelation(Map<String, Object> params) {
-        sqlSession.insert(NS + "insertTableRelation", params);
+        sqlSession.insert(NS + "insert_table_relation", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> updateTableRelation(Map<String, Object> params) {
-        int rows = sqlSession.update(NS + "updateTableRelation", params);
+        int rows = sqlSession.update(NS + "update_table_relation", params);
         if (rows == 0) throw new NoSuchElementException("화면-테이블 관계를 찾을 수 없거나 권한이 없습니다.");
         return params;
     }
 
     @Transactional
     public void deleteTableRelation(Map<String, Object> params) {
-        int rows = sqlSession.delete(NS + "deleteTableRelation", params);
+        int rows = sqlSession.delete(NS + "delete_table_relation", params);
         if (rows == 0) throw new NoSuchElementException("화면-테이블 관계를 찾을 수 없거나 권한이 없습니다.");
     }
 
@@ -334,7 +334,7 @@ public class ScreenGroupService extends BaseService {
     // ══════════════════════════════════════════════════════════════
 
     public Map<String, Object> getScreenLayoutSummary(Map<String, Object> params) {
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "selectLayoutComponents", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "select_layout_components", params);
 
         Map<String, Integer> widgetCounts = new LinkedHashMap<>();
         List<String> labels = new ArrayList<>();
@@ -349,8 +349,8 @@ public class ScreenGroupService extends BaseService {
                 labels.add(label);
                 Map<String, Object> field = new LinkedHashMap<>();
                 field.put("label", label);
-                field.put("widgetType", widgetType);
-                field.put("fieldName", row.get("field_name"));
+                field.put("widget_type", widgetType);
+                field.put("field_name", row.get("field_name"));
                 fields.add(field);
             }
         }
@@ -366,10 +366,10 @@ public class ScreenGroupService extends BaseService {
         }
 
         Map<String, Object> data = new LinkedHashMap<>();
-        data.put("screenId", toInt(params.get("screenId")));
-        data.put("screenType", screenType);
-        data.put("widgetCounts", widgetCounts);
-        data.put("totalComponents", rows.size());
+        data.put("screen_id", toInt(params.get("screen_id")));
+        data.put("screen_type", screenType);
+        data.put("widget_counts", widgetCounts);
+        data.put("total_components", rows.size());
         data.put("fields", fields.subList(0, Math.min(fields.size(), 10)));
         data.put("labels", labels.subList(0, Math.min(labels.size(), 8)));
         return data;
@@ -379,20 +379,20 @@ public class ScreenGroupService extends BaseService {
         if (screenIds == null || screenIds.isEmpty()) return new LinkedHashMap<>();
 
         Map<String, Object> params = new HashMap<>();
-        params.put("screenIds", screenIds);
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "selectMultipleLayoutComponents", params);
+        params.put("screen_ids", screenIds);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "select_multiple_layout_components", params);
 
         // 화면별 summary 초기화
         Map<Integer, Map<String, Object>> summaryMap = new LinkedHashMap<>();
         for (Integer sid : screenIds) {
             Map<String, Object> s = new LinkedHashMap<>();
-            s.put("screenId", sid);
-            s.put("screenType", "form");
-            s.put("widgetCounts", new LinkedHashMap<String, Integer>());
-            s.put("totalComponents", 0);
-            s.put("layoutItems", new ArrayList<Map<String, Object>>());
-            s.put("canvasWidth", 0);
-            s.put("canvasHeight", 0);
+            s.put("screen_id", sid);
+            s.put("screen_type", "form");
+            s.put("widget_counts", new LinkedHashMap<String, Integer>());
+            s.put("total_components", 0);
+            s.put("layout_items", new ArrayList<Map<String, Object>>());
+            s.put("canvas_width", 0);
+            s.put("canvas_height", 0);
             summaryMap.put(sid, s);
         }
 
@@ -407,42 +407,42 @@ public class ScreenGroupService extends BaseService {
             String widgetType = row.get("widget_type") != null ? (String) row.get("widget_type") : "text";
 
             @SuppressWarnings("unchecked")
-            Map<String, Integer> wc = (Map<String, Integer>) summary.get("widgetCounts");
+            Map<String, Integer> wc = (Map<String, Integer>) summary.get("widget_counts");
             wc.merge(componentKind, 1, Integer::sum);
-            summary.put("totalComponents", toInt(summary.get("totalComponents")) + 1);
+            summary.put("total_components", toInt(summary.get("total_components")) + 1);
 
             Map<String, Object> item = new LinkedHashMap<>();
             item.put("x", row.getOrDefault("position_x", 0));
             item.put("y", row.getOrDefault("position_y", 0));
             item.put("width", row.getOrDefault("width", 100));
             item.put("height", row.getOrDefault("height", 30));
-            item.put("componentKind", componentKind);
-            item.put("widgetType", widgetType);
+            item.put("component_kind", componentKind);
+            item.put("widget_type", widgetType);
             item.put("label", row.get("label"));
-            item.put("bindField", row.get("bind_field"));
-            item.put("usedColumns", new ArrayList<>());
-            item.put("joinColumns", new ArrayList<>());
+            item.put("bind_field", row.get("bind_field"));
+            item.put("used_columns", new ArrayList<>());
+            item.put("join_columns", new ArrayList<>());
 
             @SuppressWarnings("unchecked")
-            List<Map<String, Object>> layoutItems = (List<Map<String, Object>>) summary.get("layoutItems");
+            List<Map<String, Object>> layoutItems = (List<Map<String, Object>>) summary.get("layout_items");
             layoutItems.add(item);
 
             int rightEdge = toInt(row.getOrDefault("position_x", 0)) + toInt(row.getOrDefault("width", 100));
             int bottomEdge = toInt(row.getOrDefault("position_y", 0)) + toInt(row.getOrDefault("height", 30));
-            if (rightEdge > toInt(summary.get("canvasWidth"))) summary.put("canvasWidth", rightEdge);
-            if (bottomEdge > toInt(summary.get("canvasHeight"))) summary.put("canvasHeight", bottomEdge);
+            if (rightEdge > toInt(summary.get("canvas_width"))) summary.put("canvas_width", rightEdge);
+            if (bottomEdge > toInt(summary.get("canvas_height"))) summary.put("canvas_height", bottomEdge);
         }
 
         // 화면 타입 추론
         summaryMap.values().forEach(summary -> {
             @SuppressWarnings("unchecked")
-            Map<String, Integer> wc = (Map<String, Integer>) summary.get("widgetCounts");
+            Map<String, Integer> wc = (Map<String, Integer>) summary.get("widget_counts");
             if (wc.getOrDefault("table-list", 0) > 0) {
-                summary.put("screenType", "grid");
+                summary.put("screen_type", "grid");
             } else if (wc.getOrDefault("table-search-widget", 0) > 1) {
-                summary.put("screenType", "dashboard");
-            } else if (toInt(summary.get("totalComponents")) <= 5 && wc.getOrDefault("button-primary", 0) > 0) {
-                summary.put("screenType", "action");
+                summary.put("screen_type", "dashboard");
+            } else if (toInt(summary.get("total_components")) <= 5 && wc.getOrDefault("button-primary", 0) > 0) {
+                summary.put("screen_type", "action");
             }
         });
 
@@ -459,10 +459,10 @@ public class ScreenGroupService extends BaseService {
         if (screenIds == null || screenIds.isEmpty()) return new LinkedHashMap<>();
 
         Map<String, Object> p = new HashMap<>();
-        p.put("screenIds", screenIds);
+        p.put("screen_ids", screenIds);
 
         // ── 1. 컴포넌트 config 기반 서브 테이블 수집 ─────────────────
-        List<Map<String, Object>> compRows = sqlSession.selectList(NS + "selectSubTableComponentConfigs", p);
+        List<Map<String, Object>> compRows = sqlSession.selectList(NS + "select_sub_table_component_configs", p);
 
         // column label lookup 수집
         List<Map<String, Object>> columnPairs = new ArrayList<>();
@@ -474,11 +474,11 @@ public class ScreenGroupService extends BaseService {
                 String mainTable = (String) row.get("main_table");
                 String subTable  = (String) row.get("sub_table");
                 fieldMappings.forEach(fm -> {
-                    if (fm.get("sourceField") != null && subTable != null) {
-                        columnPairs.add(pairOf(subTable, (String) fm.get("sourceField")));
+                    if (fm.get("source_field") != null && subTable != null) {
+                        columnPairs.add(pairOf(subTable, (String) fm.get("source_field")));
                     }
-                    if (fm.get("targetField") != null && mainTable != null) {
-                        columnPairs.add(pairOf(mainTable, (String) fm.get("targetField")));
+                    if (fm.get("target_field") != null && mainTable != null) {
+                        columnPairs.add(pairOf(mainTable, (String) fm.get("target_field")));
                     }
                 });
             }
@@ -489,7 +489,7 @@ public class ScreenGroupService extends BaseService {
         if (!columnPairs.isEmpty()) {
             Map<String, Object> lp = new HashMap<>();
             lp.put("pairs", columnPairs);
-            sqlSession.<Map<String, Object>>selectList(NS + "selectColumnLabelsByPairs", lp)
+            sqlSession.<Map<String, Object>>selectList(NS + "select_column_labels_by_pairs", lp)
                     .forEach(r -> colLabelMap.put(r.get("table_name") + "." + r.get("column_name"),
                             (String) r.get("column_label")));
         }
@@ -506,8 +506,8 @@ public class ScreenGroupService extends BaseService {
 
             @SuppressWarnings("unchecked")
             List<Map<String, Object>> subTables = (List<Map<String, Object>>)
-                    screenSubTables.get(sid).get("subTables");
-            boolean exists = subTables.stream().anyMatch(st -> subTable.equals(st.get("tableName")));
+                    screenSubTables.get(sid).get("sub_tables");
+            boolean exists = subTables.stream().anyMatch(st -> subTable.equals(st.get("table_name")));
             if (exists) return;
 
             String componentType = (String) row.get("component_type");
@@ -515,15 +515,15 @@ public class ScreenGroupService extends BaseService {
             List<Map<String, Object>> fieldMappings = buildFieldMappings(row, subTable, mainTable, colLabelMap);
 
             Map<String, Object> stEntry = new LinkedHashMap<>();
-            stEntry.put("tableName", subTable);
-            stEntry.put("componentType", componentType);
-            stEntry.put("relationType", relationType);
-            if (fieldMappings != null) stEntry.put("fieldMappings", fieldMappings);
+            stEntry.put("table_name", subTable);
+            stEntry.put("component_type", componentType);
+            stEntry.put("relation_type", relationType);
+            if (fieldMappings != null) stEntry.put("field_mappings", fieldMappings);
             subTables.add(stEntry);
         });
 
         // ── 2. reference_table 기반 참조 서브 테이블 ──────────────────
-        sqlSession.<Map<String, Object>>selectList(NS + "selectReferenceColumns", p).forEach(row -> {
+        sqlSession.<Map<String, Object>>selectList(NS + "select_reference_columns", p).forEach(row -> {
             int sid = toInt(row.get("screen_id"));
             String mainTable = (String) row.get("main_table");
             String refTable  = (String) row.get("reference_table");
@@ -532,37 +532,37 @@ public class ScreenGroupService extends BaseService {
             ensureScreenEntry(screenSubTables, sid, (String) row.get("screen_name"), mainTable);
             @SuppressWarnings("unchecked")
             List<Map<String, Object>> subTables = (List<Map<String, Object>>)
-                    screenSubTables.get(sid).get("subTables");
+                    screenSubTables.get(sid).get("sub_tables");
 
             Map<String, Object> existing = subTables.stream()
-                    .filter(st -> refTable.equals(st.get("tableName"))).findFirst().orElse(null);
+                    .filter(st -> refTable.equals(st.get("table_name"))).findFirst().orElse(null);
 
             Map<String, Object> mapping = new LinkedHashMap<>();
-            mapping.put("sourceField", row.get("column_name"));
-            mapping.put("targetField", row.getOrDefault("reference_column", "id"));
-            mapping.put("sourceDisplayName", row.getOrDefault("source_display_name", row.get("column_name")));
-            mapping.put("targetDisplayName", row.getOrDefault("target_display_name", row.getOrDefault("reference_column", "id")));
+            mapping.put("source_field", row.get("column_name"));
+            mapping.put("target_field", row.getOrDefault("reference_column", "id"));
+            mapping.put("source_display_name", row.getOrDefault("source_display_name", row.get("column_name")));
+            mapping.put("target_display_name", row.getOrDefault("target_display_name", row.getOrDefault("reference_column", "id")));
 
             if (existing != null) {
                 @SuppressWarnings("unchecked")
-                List<Map<String, Object>> fms = (List<Map<String, Object>>) existing.get("fieldMappings");
-                if (fms != null && fms.stream().noneMatch(fm -> row.get("column_name").equals(fm.get("sourceField")))) {
+                List<Map<String, Object>> fms = (List<Map<String, Object>>) existing.get("field_mappings");
+                if (fms != null && fms.stream().noneMatch(fm -> row.get("column_name").equals(fm.get("source_field")))) {
                     fms.add(mapping);
                 }
             } else {
                 Map<String, Object> stEntry = new LinkedHashMap<>();
-                stEntry.put("tableName", refTable);
-                stEntry.put("componentType", "column_reference");
-                stEntry.put("relationType", "reference");
+                stEntry.put("table_name", refTable);
+                stEntry.put("component_type", "column_reference");
+                stEntry.put("relation_type", "reference");
                 List<Map<String, Object>> fms = new ArrayList<>();
                 fms.add(mapping);
-                stEntry.put("fieldMappings", fms);
+                stEntry.put("field_mappings", fms);
                 subTables.add(stEntry);
             }
         });
 
         // ── 3. parentDataMapping ───────────────────────────────────
-        sqlSession.<Map<String, Object>>selectList(NS + "selectParentDataMappingConfigs", p).forEach(row -> {
+        sqlSession.<Map<String, Object>>selectList(NS + "select_parent_data_mapping_configs", p).forEach(row -> {
             int sid = toInt(row.get("screen_id"));
             String mainTable = (String) row.get("main_table");
             String compType  = (String) row.get("component_type");
@@ -572,46 +572,46 @@ public class ScreenGroupService extends BaseService {
             ensureScreenEntry(screenSubTables, sid, (String) row.get("screen_name"), mainTable);
             @SuppressWarnings("unchecked")
             List<Map<String, Object>> subTables = (List<Map<String, Object>>)
-                    screenSubTables.get(sid).get("subTables");
+                    screenSubTables.get(sid).get("sub_tables");
             @SuppressWarnings("unchecked")
             List<Map<String, Object>> mappings = (List<Map<String, Object>>) pdm;
 
             mappings.forEach(mapping -> {
-                String sourceTable = (String) mapping.get("sourceTable");
+                String sourceTable = (String) mapping.get("source_table");
                 if (sourceTable == null || sourceTable.equals(mainTable)) return;
 
                 Map<String, Object> newMapping = new LinkedHashMap<>();
-                newMapping.put("sourceTable", sourceTable);
-                newMapping.put("sourceField", mapping.getOrDefault("sourceField", ""));
-                newMapping.put("targetField", mapping.getOrDefault("targetField", ""));
-                newMapping.put("sourceDisplayName", mapping.getOrDefault("sourceField", ""));
-                newMapping.put("targetDisplayName", mapping.getOrDefault("targetField", ""));
+                newMapping.put("source_table", sourceTable);
+                newMapping.put("source_field", mapping.getOrDefault("source_field", ""));
+                newMapping.put("target_field", mapping.getOrDefault("target_field", ""));
+                newMapping.put("source_display_name", mapping.getOrDefault("source_field", ""));
+                newMapping.put("target_display_name", mapping.getOrDefault("target_field", ""));
 
                 Map<String, Object> existing = subTables.stream()
-                        .filter(st -> sourceTable.equals(st.get("tableName"))).findFirst().orElse(null);
+                        .filter(st -> sourceTable.equals(st.get("table_name"))).findFirst().orElse(null);
                 if (existing != null) {
                     @SuppressWarnings("unchecked")
-                    List<Map<String, Object>> fms = (List<Map<String, Object>>) existing.computeIfAbsent("fieldMappings", k -> new ArrayList<>());
-                    String sf = (String) newMapping.get("sourceField");
-                    String tf = (String) newMapping.get("targetField");
+                    List<Map<String, Object>> fms = (List<Map<String, Object>>) existing.computeIfAbsent("field_mappings", k -> new ArrayList<>());
+                    String sf = (String) newMapping.get("source_field");
+                    String tf = (String) newMapping.get("target_field");
                     boolean exists = fms.stream().anyMatch(fm ->
-                            sf.equals(fm.get("sourceField")) && tf.equals(fm.get("targetField")));
+                            sf.equals(fm.get("source_field")) && tf.equals(fm.get("target_field")));
                     if (!exists) fms.add(newMapping);
                 } else {
                     Map<String, Object> stEntry = new LinkedHashMap<>();
-                    stEntry.put("tableName", sourceTable);
-                    stEntry.put("componentType", compType);
-                    stEntry.put("relationType", "parentMapping");
+                    stEntry.put("table_name", sourceTable);
+                    stEntry.put("component_type", compType);
+                    stEntry.put("relation_type", "parent_mapping");
                     List<Map<String, Object>> fms = new ArrayList<>();
                     fms.add(newMapping);
-                    stEntry.put("fieldMappings", fms);
+                    stEntry.put("field_mappings", fms);
                     subTables.add(stEntry);
                 }
             });
         });
 
         // ── 4. rightPanel.relation ─────────────────────────────────
-        List<Map<String, Object>> rpRows = sqlSession.selectList(NS + "selectRightPanelRelations", p);
+        List<Map<String, Object>> rpRows = sqlSession.selectList(NS + "select_right_panel_relations", p);
         // rightPanel columns에서 dot-notation 참조 테이블 수집
         Map<String, Set<String>> rpJoinedTables = new HashMap<>();
         rpRows.forEach(row -> {
@@ -624,7 +624,7 @@ public class ScreenGroupService extends BaseService {
                 String key = sid + "_" + rpTable;
                 columns.forEach(col -> {
                     String colName = (String) col.getOrDefault("name",
-                            col.getOrDefault("columnName", col.get("field")));
+                            col.getOrDefault("column_name", col.get("field")));
                     if (colName != null && colName.contains(".")) {
                         rpJoinedTables.computeIfAbsent(key, k -> new HashSet<>()).add(colName.split("\\.")[0]);
                     }
@@ -643,14 +643,14 @@ public class ScreenGroupService extends BaseService {
             if (subTable == null && relation instanceof Map) {
                 @SuppressWarnings("unchecked")
                 Map<String, Object> rel = (Map<String, Object>) relation;
-                subTable = (String) rel.getOrDefault("targetTable", rel.get("tableName"));
+                subTable = (String) rel.getOrDefault("target_table", rel.get("table_name"));
             }
             if (subTable == null || subTable.equals(mainTable)) return;
 
             ensureScreenEntry(screenSubTables, sid, (String) row.get("screen_name"), mainTable);
             @SuppressWarnings("unchecked")
             List<Map<String, Object>> subTables = (List<Map<String, Object>>)
-                    screenSubTables.get(sid).get("subTables");
+                    screenSubTables.get(sid).get("sub_tables");
 
             String key = sid + "_" + subTable;
             List<String> joinedTables = rpJoinedTables.containsKey(key)
@@ -660,23 +660,23 @@ public class ScreenGroupService extends BaseService {
             if (relation instanceof Map) {
                 @SuppressWarnings("unchecked")
                 Map<String, Object> rel = (Map<String, Object>) relation;
-                if (rel.get("sourceField") != null && rel.get("targetField") != null) {
+                if (rel.get("source_field") != null && rel.get("target_field") != null) {
                     Map<String, Object> fm = new LinkedHashMap<>();
-                    fm.put("sourceField", rel.get("sourceField"));
-                    fm.put("targetField", rel.get("targetField"));
-                    fm.put("sourceDisplayName", rel.get("sourceField"));
-                    fm.put("targetDisplayName", rel.get("targetField"));
+                    fm.put("source_field", rel.get("source_field"));
+                    fm.put("target_field", rel.get("target_field"));
+                    fm.put("source_display_name", rel.get("source_field"));
+                    fm.put("target_display_name", rel.get("target_field"));
                     fieldMappings.add(fm);
                 }
-                if (rel.get("fieldMappings") instanceof List) {
+                if (rel.get("field_mappings") instanceof List) {
                     @SuppressWarnings("unchecked")
-                    List<Map<String, Object>> rfms = (List<Map<String, Object>>) rel.get("fieldMappings");
+                    List<Map<String, Object>> rfms = (List<Map<String, Object>>) rel.get("field_mappings");
                     rfms.forEach(rfm -> {
                         Map<String, Object> fm = new LinkedHashMap<>();
-                        fm.put("sourceField", rfm.getOrDefault("sourceField", rfm.get("source_field")));
-                        fm.put("targetField", rfm.getOrDefault("targetField", rfm.get("target_field")));
-                        fm.put("sourceDisplayName", fm.get("sourceField"));
-                        fm.put("targetDisplayName", fm.get("targetField"));
+                        fm.put("source_field", rfm.getOrDefault("source_field", rfm.get("source_field")));
+                        fm.put("target_field", rfm.getOrDefault("target_field", rfm.get("target_field")));
+                        fm.put("source_display_name", fm.get("source_field"));
+                        fm.put("target_display_name", fm.get("target_field"));
                         fieldMappings.add(fm);
                     });
                 }
@@ -684,30 +684,30 @@ public class ScreenGroupService extends BaseService {
 
             final String subTableFinal = subTable;
             Map<String, Object> existing = subTables.stream()
-                    .filter(st -> subTableFinal.equals(st.get("tableName"))).findFirst().orElse(null);
+                    .filter(st -> subTableFinal.equals(st.get("table_name"))).findFirst().orElse(null);
             if (existing != null) {
                 @SuppressWarnings("unchecked")
                 List<Map<String, Object>> fms = (List<Map<String, Object>>)
-                        existing.computeIfAbsent("fieldMappings", k -> new ArrayList<>());
+                        existing.computeIfAbsent("field_mappings", k -> new ArrayList<>());
                 fieldMappings.forEach(fm -> {
                     boolean dup = fms.stream().anyMatch(e ->
-                            Objects.equals(fm.get("sourceField"), e.get("sourceField")) &&
-                            Objects.equals(fm.get("targetField"), e.get("targetField")));
+                            Objects.equals(fm.get("source_field"), e.get("source_field")) &&
+                            Objects.equals(fm.get("target_field"), e.get("target_field")));
                     if (!dup) fms.add(fm);
                 });
             } else {
                 Map<String, Object> stEntry = new LinkedHashMap<>();
-                stEntry.put("tableName", subTable);
-                stEntry.put("componentType", compType);
-                stEntry.put("relationType", "rightPanelRelation");
-                if (!joinedTables.isEmpty()) stEntry.put("joinedTables", joinedTables);
-                if (!fieldMappings.isEmpty()) stEntry.put("fieldMappings", fieldMappings);
+                stEntry.put("table_name", subTable);
+                stEntry.put("component_type", compType);
+                stEntry.put("relation_type", "right_panel_relation");
+                if (!joinedTables.isEmpty()) stEntry.put("joined_tables", joinedTables);
+                if (!fieldMappings.isEmpty()) stEntry.put("field_mappings", fieldMappings);
                 if (relation instanceof Map) {
                     @SuppressWarnings("unchecked")
                     Map<String, Object> rel = (Map<String, Object>) relation;
-                    if (rel.get("type") != null)       stEntry.put("originalRelationType", rel.get("type"));
-                    if (rel.get("foreignKey") != null)  stEntry.put("foreignKey", rel.get("foreignKey"));
-                    if (rel.get("leftColumn") != null)  stEntry.put("leftColumn", rel.get("leftColumn"));
+                    if (rel.get("type") != null)       stEntry.put("original_relation_type", rel.get("type"));
+                    if (rel.get("foreign_key") != null)  stEntry.put("foreign_key", rel.get("foreign_key"));
+                    if (rel.get("left_column") != null)  stEntry.put("left_column", rel.get("left_column"));
                 }
                 subTables.add(stEntry);
             }
@@ -718,47 +718,47 @@ public class ScreenGroupService extends BaseService {
         Set<String> refTableNamesSet = new HashSet<>();
         screenSubTables.values().forEach(sd -> {
             @SuppressWarnings("unchecked")
-            List<Map<String, Object>> sts = (List<Map<String, Object>>) sd.get("subTables");
+            List<Map<String, Object>> sts = (List<Map<String, Object>>) sd.get("sub_tables");
             sts.forEach(st -> {
-                Object jt = st.get("joinedTables");
+                Object jt = st.get("joined_tables");
                 if (jt instanceof List) {
                     @SuppressWarnings("unchecked")
                     List<String> joinedList = (List<String>) jt;
-                    subTableNamesSet.add((String) st.get("tableName"));
+                    subTableNamesSet.add((String) st.get("table_name"));
                     refTableNamesSet.addAll(joinedList);
                 }
             });
         });
         if (!subTableNamesSet.isEmpty() && !refTableNamesSet.isEmpty()) {
             Map<String, Object> fkp = new HashMap<>();
-            fkp.put("subTableNames", new ArrayList<>(subTableNamesSet));
-            fkp.put("refTableNames", new ArrayList<>(refTableNamesSet));
+            fkp.put("sub_table_names", new ArrayList<>(subTableNamesSet));
+            fkp.put("ref_table_names", new ArrayList<>(refTableNamesSet));
             Map<String, List<Map<String, Object>>> joinColRefs = new HashMap<>();
-            sqlSession.<Map<String, Object>>selectList(NS + "selectFKColumnsForJoinedTables", fkp).forEach(row -> {
+            sqlSession.<Map<String, Object>>selectList(NS + "select_fk_columns_for_joined_tables", fkp).forEach(row -> {
                 String tbl = (String) row.get("table_name");
                 joinColRefs.computeIfAbsent(tbl, k -> new ArrayList<>());
                 String col = (String) row.get("column_name");
                 String ref = (String) row.get("reference_table");
                 boolean dup = joinColRefs.get(tbl).stream().anyMatch(r ->
-                        col.equals(r.get("column")) && ref.equals(r.get("refTable")));
+                        col.equals(r.get("column")) && ref.equals(r.get("ref_table")));
                 if (!dup) {
                     Map<String, Object> ref2 = new LinkedHashMap<>();
                     ref2.put("column", col);
-                    ref2.put("columnLabel", row.getOrDefault("column_label", col));
-                    ref2.put("refTable", ref);
-                    ref2.put("refTableLabel", row.getOrDefault("reference_table_label", ref));
-                    ref2.put("refColumn", row.getOrDefault("reference_column", "id"));
+                    ref2.put("column_label", row.getOrDefault("column_label", col));
+                    ref2.put("ref_table", ref);
+                    ref2.put("ref_table_label", row.getOrDefault("reference_table_label", ref));
+                    ref2.put("ref_column", row.getOrDefault("reference_column", "id"));
                     joinColRefs.get(tbl).add(ref2);
                 }
             });
             screenSubTables.values().forEach(sd -> {
                 @SuppressWarnings("unchecked")
-                List<Map<String, Object>> sts = (List<Map<String, Object>>) sd.get("subTables");
+                List<Map<String, Object>> sts = (List<Map<String, Object>>) sd.get("sub_tables");
                 sts.forEach(st -> {
-                    List<Map<String, Object>> refs = joinColRefs.get(st.get("tableName"));
+                    List<Map<String, Object>> refs = joinColRefs.get(st.get("table_name"));
                     if (refs != null) {
-                        st.put("joinColumns", refs.stream().map(r -> r.get("column")).collect(Collectors.toList()));
-                        st.put("joinColumnRefs", refs);
+                        st.put("join_columns", refs.stream().map(r -> r.get("column")).collect(Collectors.toList()));
+                        st.put("join_column_refs", refs);
                     }
                 });
             });
@@ -775,19 +775,19 @@ public class ScreenGroupService extends BaseService {
             ensureScreenEntry(screenSubTables, sid, (String) row.get("screen_name"), mainTable);
             @SuppressWarnings("unchecked")
             List<Map<String, Object>> sts = (List<Map<String, Object>>)
-                    screenSubTables.get(sid).get("subTables");
-            if (sts.stream().noneMatch(st -> subTable.equals(st.get("tableName")))) {
+                    screenSubTables.get(sid).get("sub_tables");
+            if (sts.stream().noneMatch(st -> subTable.equals(st.get("table_name")))) {
                 Map<String, Object> stEntry = new LinkedHashMap<>();
-                stEntry.put("tableName", subTable);
-                stEntry.put("componentType", "v2-repeater");
-                stEntry.put("relationType", "rightPanelRelation");
+                stEntry.put("table_name", subTable);
+                stEntry.put("component_type", "v2-repeater");
+                stEntry.put("relation_type", "right_panel_relation");
                 if (fk != null) {
                     Map<String, Object> fm = new LinkedHashMap<>();
-                    fm.put("sourceField", "id");
-                    fm.put("targetField", fk);
-                    fm.put("sourceDisplayName", "ID");
-                    fm.put("targetDisplayName", fk);
-                    stEntry.put("fieldMappings", Collections.singletonList(fm));
+                    fm.put("source_field", "id");
+                    fm.put("target_field", fk);
+                    fm.put("source_display_name", "ID");
+                    fm.put("target_display_name", fk);
+                    stEntry.put("field_mappings", Collections.singletonList(fm));
                 }
                 sts.add(stEntry);
             }
@@ -804,26 +804,26 @@ public class ScreenGroupService extends BaseService {
             ensureScreenEntry(screenSubTables, sid, (String) row.get("screen_name"), mainTable);
             @SuppressWarnings("unchecked")
             List<Map<String, Object>> sts = (List<Map<String, Object>>)
-                    screenSubTables.get(sid).get("subTables");
-            if (sts.stream().noneMatch(st -> subTable.equals(st.get("tableName")))) {
+                    screenSubTables.get(sid).get("sub_tables");
+            if (sts.stream().noneMatch(st -> subTable.equals(st.get("table_name")))) {
                 Map<String, Object> stEntry = new LinkedHashMap<>();
-                stEntry.put("tableName", subTable);
-                stEntry.put("componentType", row.getOrDefault("component_type", "v2-bom-tree"));
-                stEntry.put("relationType", "rightPanelRelation");
+                stEntry.put("table_name", subTable);
+                stEntry.put("component_type", row.getOrDefault("component_type", "v2-bom-tree"));
+                stEntry.put("relation_type", "right_panel_relation");
                 if (fk != null) {
                     Map<String, Object> fm = new LinkedHashMap<>();
-                    fm.put("sourceField", "id");
-                    fm.put("targetField", fk);
-                    fm.put("sourceDisplayName", "ID");
-                    fm.put("targetDisplayName", fk);
-                    stEntry.put("fieldMappings", Collections.singletonList(fm));
+                    fm.put("source_field", "id");
+                    fm.put("target_field", fk);
+                    fm.put("source_display_name", "ID");
+                    fm.put("target_display_name", fk);
+                    stEntry.put("field_mappings", Collections.singletonList(fm));
                 }
                 sts.add(stEntry);
             }
         });
 
         // ── 8. Save Tables ────────────────────────────────────────
-        sqlSession.<Map<String, Object>>selectList(NS + "selectSaveTableActions", p).forEach(row -> {
+        sqlSession.<Map<String, Object>>selectList(NS + "select_save_table_actions", p).forEach(row -> {
             int sid = toInt(row.get("screen_id"));
             String mainTable  = (String) row.get("main_table");
             String actionType = (String) row.get("action_type");
@@ -838,29 +838,29 @@ public class ScreenGroupService extends BaseService {
             Map<String, Object> sd = screenSubTables.get(sid);
             @SuppressWarnings("unchecked")
             List<Map<String, Object>> saveTables = (List<Map<String, Object>>)
-                    sd.computeIfAbsent("saveTables", k -> new ArrayList<>());
+                    sd.computeIfAbsent("save_tables", k -> new ArrayList<>());
 
             boolean dup = saveTables.stream().anyMatch(st ->
-                    targetTable.equals(st.get("tableName")) && actionType.equals(st.get("saveType")));
+                    targetTable.equals(st.get("table_name")) && actionType.equals(st.get("save_type")));
             if (!dup) {
                 Map<String, Object> stEntry = new LinkedHashMap<>();
-                stEntry.put("tableName", targetTable);
-                stEntry.put("saveType", actionType);
-                stEntry.put("componentType", compType);
-                stEntry.put("isMainTable", targetTable.equals(mainTable));
+                stEntry.put("table_name", targetTable);
+                stEntry.put("save_type", actionType);
+                stEntry.put("component_type", compType);
+                stEntry.put("is_main_table", targetTable.equals(mainTable));
                 saveTables.add(stEntry);
             }
         });
 
         // ── 9. 전역 메인 테이블 목록 ──────────────────────────────
-        List<String> globalMainTables = sqlSession.<Map<String, Object>>selectList(NS + "selectGlobalMainTables", p).stream()
+        List<String> globalMainTables = sqlSession.<Map<String, Object>>selectList(NS + "select_global_main_tables", p).stream()
                 .map(r -> (String) r.get("main_table"))
                 .filter(t -> t != null && !t.isEmpty())
                 .collect(Collectors.toList());
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("data", screenSubTables);
-        result.put("globalMainTables", globalMainTables);
+        result.put("global_main_tables", globalMainTables);
         return result;
     }
 
@@ -869,12 +869,12 @@ public class ScreenGroupService extends BaseService {
     // ══════════════════════════════════════════════════════════════
 
     public List<Map<String, Object>> getPopScreenGroups(Map<String, Object> params) {
-        List<Map<String, Object>> groups = sqlSession.selectList(NS + "selectPopScreenGroups", params);
+        List<Map<String, Object>> groups = sqlSession.selectList(NS + "select_pop_screen_groups", params);
         if (!groups.isEmpty()) {
             List<Object> groupIds = groups.stream().map(g -> g.get("id")).collect(Collectors.toList());
             Map<String, Object> sp = new HashMap<>();
-            sp.put("groupIds", groupIds);
-            List<Map<String, Object>> allScreens = sqlSession.selectList(NS + "selectPopGroupScreens", sp);
+            sp.put("group_ids", groupIds);
+            List<Map<String, Object>> allScreens = sqlSession.selectList(NS + "select_pop_group_screens", sp);
             Map<Object, List<Map<String, Object>>> byGroup = allScreens.stream()
                     .collect(Collectors.groupingBy(s -> s.get("group_id")));
             groups.forEach(g -> g.put("screens", byGroup.getOrDefault(g.get("id"), Collections.emptyList())));
@@ -884,62 +884,62 @@ public class ScreenGroupService extends BaseService {
 
     @Transactional
     public Map<String, Object> createPopScreenGroup(Map<String, Object> params) {
-        String userCompanyCode = (String) params.get("userCompanyCode");
-        String effectiveCompanyCode = (String) params.getOrDefault("targetCompanyCode", userCompanyCode);
+        String userCompanyCode = (String) params.get("user_company_code");
+        String effectiveCompanyCode = (String) params.getOrDefault("target_company_code", userCompanyCode);
         if (!"*".equals(userCompanyCode) && !effectiveCompanyCode.equals(userCompanyCode)) {
             throw new SecurityException("다른 회사의 그룹을 생성할 권한이 없습니다.");
         }
-        params.put("companyCode", effectiveCompanyCode);
+        params.put("company_code", effectiveCompanyCode);
 
         // hierarchy_path 계산
-        Object parentGroupId = params.get("parentGroupId");
+        Object parentGroupId = params.get("parent_group_id");
         String hierarchyPath;
         if (parentGroupId != null) {
             Map<String, Object> pp = new HashMap<>();
-            pp.put("parentGroupId", parentGroupId);
-            Map<String, Object> parent = sqlSession.selectOne(NS + "selectParentGroupById", pp);
+            pp.put("parent_group_id", parentGroupId);
+            Map<String, Object> parent = sqlSession.selectOne(NS + "select_parent_group_by_id", pp);
             if (parent != null) {
-                hierarchyPath = parent.get("hierarchy_path") + "/" + params.get("groupCode");
+                hierarchyPath = parent.get("hierarchy_path") + "/" + params.get("group_code");
             } else {
-                hierarchyPath = "POP/" + params.get("groupCode");
+                hierarchyPath = "POP/" + params.get("group_code");
             }
         } else {
-            hierarchyPath = "POP/" + params.get("groupCode");
+            hierarchyPath = "POP/" + params.get("group_code");
         }
-        params.put("hierarchyPath", hierarchyPath);
+        params.put("hierarchy_path", hierarchyPath);
 
         // 중복 체크
-        int dupCount = sqlSession.selectOne(NS + "countGroupByCode", params);
+        int dupCount = sqlSession.selectOne(NS + "count_group_by_code", params);
         if (dupCount > 0) {
             throw new IllegalArgumentException("동일한 그룹코드가 이미 존재합니다.");
         }
 
-        sqlSession.insert(NS + "insertPopScreenGroup", params);
+        sqlSession.insert(NS + "insert_pop_screen_group", params);
         Map<String, Object> sp = new HashMap<>();
         sp.put("id", params.get("id"));
-        return sqlSession.selectOne(NS + "selectScreenGroupById", sp);
+        return sqlSession.selectOne(NS + "select_screen_group_by_id", sp);
     }
 
     @Transactional
     public Map<String, Object> updatePopScreenGroup(Map<String, Object> params) {
-        Map<String, Object> existing = sqlSession.selectOne(NS + "selectScreenGroupForUpdate", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "select_screen_group_for_update", params);
         if (existing == null) throw new NoSuchElementException("그룹을 찾을 수 없습니다.");
 
         String hierarchyPath = (String) existing.get("hierarchy_path");
         if (hierarchyPath == null || !hierarchyPath.startsWith("POP")) {
             throw new IllegalArgumentException("POP 그룹만 수정할 수 있습니다.");
         }
-        sqlSession.update(NS + "updatePopScreenGroup", params);
+        sqlSession.update(NS + "update_pop_screen_group", params);
         Map<String, Object> sp = new HashMap<>();
         sp.put("id", params.get("id"));
-        return sqlSession.selectOne(NS + "selectScreenGroupById", sp);
+        return sqlSession.selectOne(NS + "select_screen_group_by_id", sp);
     }
 
     @Transactional
     public void deletePopScreenGroup(Map<String, Object> params) {
-        Map<String, Object> existing = sqlSession.selectOne(NS + "selectScreenGroupForUpdate", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "select_screen_group_for_update", params);
         if (existing == null) {
-            Map<String, Object> any = sqlSession.selectOne(NS + "selectAnyScreenGroupById", params);
+            Map<String, Object> any = sqlSession.selectOne(NS + "select_any_screen_group_by_id", params);
             if (any != null) {
                 String ownerCode = (String) any.get("company_code");
                 throw new SecurityException("이 그룹은 " + ("*".equals(ownerCode) ? "최고관리자" : ownerCode)
@@ -951,26 +951,26 @@ public class ScreenGroupService extends BaseService {
         if (hierarchyPath == null || !hierarchyPath.startsWith("POP")) {
             throw new IllegalArgumentException("POP 그룹만 삭제할 수 있습니다.");
         }
-        int childCount = sqlSession.selectOne(NS + "countChildGroupsByParentId", params);
+        int childCount = sqlSession.selectOne(NS + "count_child_groups_by_parent_id", params);
         if (childCount > 0) throw new IllegalArgumentException("하위 그룹이 " + childCount + "개 있어 삭제할 수 없습니다. 하위 그룹을 먼저 삭제해주세요.");
-        int screenCount = sqlSession.selectOne(NS + "countGroupScreensByGroupId", params);
+        int screenCount = sqlSession.selectOne(NS + "count_group_screens_by_group_id", params);
         if (screenCount > 0) throw new IllegalArgumentException("그룹에 연결된 화면이 " + screenCount + "개 있어 삭제할 수 없습니다. 화면을 먼저 제거해주세요.");
 
         Map<String, Object> dp = new HashMap<>();
         dp.put("id", params.get("id"));
-        dp.put("targetCompanyCode", existing.get("company_code"));
-        sqlSession.delete(NS + "deleteScreenGroupById", dp);
+        dp.put("target_company_code", existing.get("company_code"));
+        sqlSession.delete(NS + "delete_screen_group_by_id", dp);
     }
 
     public Map<String, Object> ensurePopRootGroup(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
-        Map<String, Object> existing = sqlSession.selectOne(NS + "selectPopRootGroup", params);
+        String companyCode = (String) params.get("company_code");
+        Map<String, Object> existing = sqlSession.selectOne(NS + "select_pop_root_group", params);
         if (existing != null) return existing;
 
         if (!"*".equals(companyCode)) return null;
 
-        sqlSession.insert(NS + "insertPopRootGroup", params);
-        return sqlSession.selectOne(NS + "selectPopRootGroup", params);
+        sqlSession.insert(NS + "insert_pop_root_group", params);
+        return sqlSession.selectOne(NS + "select_pop_root_group", params);
     }
 
     // ══════════════════════════════════════════════════════════════
@@ -985,9 +985,9 @@ public class ScreenGroupService extends BaseService {
 
         try {
             Map<String, Object> p = new HashMap<>();
-            p.put("companyCode", companyCode);
-            List<Map<String, Object>> groups = sqlSession.selectList(NS + "selectScreenGroupsForSync", p);
-            List<Map<String, Object>> existingMenus = sqlSession.selectList(NS + "selectExistingMenusForSync", p);
+            p.put("company_code", companyCode);
+            List<Map<String, Object>> groups = sqlSession.selectList(NS + "select_screen_groups_for_sync", p);
+            List<Map<String, Object>> existingMenus = sqlSession.selectList(NS + "select_existing_menus_for_sync", p);
 
             // path/name → menu 매핑 (screen_group_id 없는 것만)
             Map<String, Map<String, Object>> menuByPath = new LinkedHashMap<>();
@@ -1005,7 +1005,7 @@ public class ScreenGroupService extends BaseService {
             });
 
             // 사용자 메뉴 루트 확보
-            Map<String, Object> rootMenu = sqlSession.selectOne(NS + "selectUserMenuRoot", p);
+            Map<String, Object> rootMenu = sqlSession.selectOne(NS + "select_user_menu_root", p);
             long userMenuRootObjid;
             if (rootMenu != null) {
                 userMenuRootObjid = toLong(rootMenu.get("objid"));
@@ -1013,9 +1013,9 @@ public class ScreenGroupService extends BaseService {
                 long rootObjid = System.currentTimeMillis();
                 Map<String, Object> rp = new HashMap<>();
                 rp.put("objid", rootObjid);
-                rp.put("companyCode", companyCode);
-                rp.put("userId", userId);
-                sqlSession.insert(NS + "insertUserMenuRoot", rp);
+                rp.put("company_code", companyCode);
+                rp.put("user_id", userId);
+                sqlSession.insert(NS + "insert_user_menu_root", rp);
                 userMenuRootObjid = rootObjid;
             }
 
@@ -1053,7 +1053,7 @@ public class ScreenGroupService extends BaseService {
                         continue;
                     } else {
                         Map<String, Object> cp = new HashMap<>(); cp.put("id", gid);
-                        sqlSession.update(NS + "clearScreenGroupMenuObjid", cp);
+                        sqlSession.update(NS + "clear_screen_group_menu_objid", cp);
                     }
                 }
 
@@ -1067,19 +1067,19 @@ public class ScreenGroupService extends BaseService {
 
                 if (matchedMenu != null) {
                     long mObjid = toLong(matchedMenu.get("objid"));
-                    Map<String, Object> up = new HashMap<>(); up.put("menuObjid", mObjid); up.put("id", gid);
-                    sqlSession.update(NS + "updateScreenGroupMenuObjid", up);
-                    Map<String, Object> up2 = new HashMap<>(); up2.put("groupId", gid); up2.put("objid", mObjid);
-                    sqlSession.update(NS + "updateMenuScreenGroupId", up2);
+                    Map<String, Object> up = new HashMap<>(); up.put("menu_objid", mObjid); up.put("id", gid);
+                    sqlSession.update(NS + "update_screen_group_menu_objid", up);
+                    Map<String, Object> up2 = new HashMap<>(); up2.put("group_id", gid); up2.put("objid", mObjid);
+                    sqlSession.update(NS + "update_menu_screen_group_id", up2);
                     // URL 업데이트
-                    Map<String, Object> dp = new HashMap<>(); dp.put("groupId", gid); dp.put("companyCode", companyCode);
-                    Map<String, Object> defaultScreen = sqlSession.selectOne(NS + "selectDefaultScreenForGroup", dp);
+                    Map<String, Object> dp = new HashMap<>(); dp.put("group_id", gid); dp.put("company_code", companyCode);
+                    Map<String, Object> defaultScreen = sqlSession.selectOne(NS + "select_default_screen_for_group", dp);
                     if (defaultScreen != null) {
                         Map<String, Object> urlp = new HashMap<>();
-                        urlp.put("menuUrl", "/screens/" + defaultScreen.get("screen_id"));
-                        urlp.put("screenCode", defaultScreen.get("screen_code"));
+                        urlp.put("menu_url", "/screens/" + defaultScreen.get("screen_id"));
+                        urlp.put("screen_code", defaultScreen.get("screen_code"));
                         urlp.put("objid", mObjid);
-                        sqlSession.update(NS + "updateMenuUrlAndScreenCode", urlp);
+                        sqlSession.update(NS + "update_menu_url_and_screen_code", urlp);
                     }
                     groupToMenuMap.put(gid, mObjid);
                     linked++;
@@ -1099,25 +1099,25 @@ public class ScreenGroupService extends BaseService {
                         }
                     }
                     Map<String, Object> seqp = new HashMap<>();
-                    seqp.put("parentObjid", parentMenuObjid);
-                    seqp.put("companyCode", companyCode);
-                    int seq = sqlSession.selectOne(NS + "getNextMenuSeqUnderParent", seqp);
+                    seqp.put("parent_objid", parentMenuObjid);
+                    seqp.put("company_code", companyCode);
+                    int seq = sqlSession.selectOne(NS + "get_next_menu_seq_under_parent", seqp);
 
-                    Map<String, Object> dp = new HashMap<>(); dp.put("groupId", gid); dp.put("companyCode", companyCode);
-                    Map<String, Object> defScreen = sqlSession.selectOne(NS + "selectDefaultScreenForGroup", dp);
+                    Map<String, Object> dp = new HashMap<>(); dp.put("group_id", gid); dp.put("company_code", companyCode);
+                    Map<String, Object> defScreen = sqlSession.selectOne(NS + "select_default_screen_for_group", dp);
                     String menuUrl  = defScreen != null ? "/screens/" + defScreen.get("screen_id") : null;
                     String screenCode = defScreen != null ? (String) defScreen.get("screen_code") : null;
 
                     Map<String, Object> ins = new HashMap<>();
-                    ins.put("objid", newObjid); ins.put("parentObjid", parentMenuObjid);
-                    ins.put("groupName", gName); ins.put("groupCode", group.getOrDefault("group_code", gName));
-                    ins.put("seq", seq); ins.put("companyCode", companyCode); ins.put("userId", userId);
-                    ins.put("groupId", gid); ins.put("description", group.get("description"));
-                    ins.put("menuUrl", menuUrl); ins.put("screenCode", screenCode); ins.put("icon", group.get("icon"));
-                    sqlSession.insert(NS + "insertMenuForGroup", ins);
+                    ins.put("objid", newObjid); ins.put("parent_objid", parentMenuObjid);
+                    ins.put("group_name", gName); ins.put("group_code", group.getOrDefault("group_code", gName));
+                    ins.put("seq", seq); ins.put("company_code", companyCode); ins.put("user_id", userId);
+                    ins.put("group_id", gid); ins.put("description", group.get("description"));
+                    ins.put("menu_url", menuUrl); ins.put("screen_code", screenCode); ins.put("icon", group.get("icon"));
+                    sqlSession.insert(NS + "insert_menu_for_group", ins);
 
-                    Map<String, Object> up = new HashMap<>(); up.put("menuObjid", newObjid); up.put("id", gid);
-                    sqlSession.update(NS + "updateScreenGroupMenuObjid", up);
+                    Map<String, Object> up = new HashMap<>(); up.put("menu_objid", newObjid); up.put("id", gid);
+                    sqlSession.update(NS + "update_screen_group_menu_objid", up);
 
                     groupToMenuMap.put(gid, newObjid);
                     created++;
@@ -1151,14 +1151,14 @@ public class ScreenGroupService extends BaseService {
 
         try {
             Map<String, Object> p = new HashMap<>();
-            p.put("companyCode", companyCode);
+            p.put("company_code", companyCode);
 
             // 회사명 조회
-            Map<String, Object> companyRow = sqlSession.selectOne(NS + "selectCompanyName", p);
+            Map<String, Object> companyRow = sqlSession.selectOne(NS + "select_company_name", p);
             String companyName = companyRow != null ? toStr(companyRow.get("company_name")) : companyCode;
 
-            List<Map<String, Object>> menus  = sqlSession.selectList(NS + "selectMenusForSync", p);
-            List<Map<String, Object>> groups = sqlSession.selectList(NS + "selectGroupsForSync", p);
+            List<Map<String, Object>> menus  = sqlSession.selectList(NS + "select_menus_for_sync", p);
+            List<Map<String, Object>> groups = sqlSession.selectList(NS + "select_groups_for_sync", p);
 
             // path/name → group 매핑 (menu_objid 없는 것만)
             Map<String, Map<String, Object>> groupByPath = new LinkedHashMap<>();
@@ -1176,24 +1176,24 @@ public class ScreenGroupService extends BaseService {
             });
 
             // 회사 폴더 확보
-            Map<String, Object> folderRow = sqlSession.selectOne(NS + "selectRootCompanyFolder", p);
+            Map<String, Object> folderRow = sqlSession.selectOne(NS + "select_root_company_folder", p);
             int companyFolderId;
             if (folderRow != null) {
                 companyFolderId = toInt(folderRow.get("id"));
             } else {
-                int maxOrder = sqlSession.selectOne(NS + "getMaxRootDisplayOrder", null);
+                int maxOrder = sqlSession.selectOne(NS + "get_max_root_display_order", null);
                 Map<String, Object> fp = new HashMap<>();
-                fp.put("companyName", companyName);
-                fp.put("groupCode", companyCode.toLowerCase());
-                fp.put("displayOrder", maxOrder);
-                fp.put("companyCode", companyCode);
-                fp.put("userId", userId);
-                sqlSession.insert(NS + "insertCompanyFolder", fp);
+                fp.put("company_name", companyName);
+                fp.put("group_code", companyCode.toLowerCase());
+                fp.put("display_order", maxOrder);
+                fp.put("company_code", companyCode);
+                fp.put("user_id", userId);
+                sqlSession.insert(NS + "insert_company_folder", fp);
                 companyFolderId = toInt(fp.get("id"));
                 Map<String, Object> hp = new HashMap<>();
                 hp.put("id", companyFolderId);
-                hp.put("hierarchyPath", "/" + companyFolderId + "/");
-                sqlSession.update(NS + "updateGroupHierarchyPathById", hp);
+                hp.put("hierarchy_path", "/" + companyFolderId + "/");
+                sqlSession.update(NS + "update_group_hierarchy_path_by_id", hp);
             }
 
             Map<Long, Integer> menuToGroupMap = new LinkedHashMap<>();
@@ -1220,10 +1220,10 @@ public class ScreenGroupService extends BaseService {
 
                 if (matchedGroup != null) {
                     int gid = toInt(matchedGroup.get("id"));
-                    Map<String, Object> up = new HashMap<>(); up.put("menuObjid", mObjid); up.put("id", gid);
-                    sqlSession.update(NS + "updateScreenGroupForMenuSync", up);
-                    Map<String, Object> up2 = new HashMap<>(); up2.put("groupId", gid); up2.put("objid", mObjid);
-                    sqlSession.update(NS + "updateMenuScreenGroupId", up2);
+                    Map<String, Object> up = new HashMap<>(); up.put("menu_objid", mObjid); up.put("id", gid);
+                    sqlSession.update(NS + "update_screen_group_for_menu_sync", up);
+                    Map<String, Object> up2 = new HashMap<>(); up2.put("group_id", gid); up2.put("objid", mObjid);
+                    sqlSession.update(NS + "update_menu_screen_group_id", up2);
                     menuToGroupMap.put(mObjid, gid);
                     linked++;
                     details.add(detail("linked", mName, mObjid, gid, null));
@@ -1235,33 +1235,33 @@ public class ScreenGroupService extends BaseService {
                     int parentGid = menuToGroupMap.getOrDefault(parentObjid, companyFolderId);
                     // 부모 그룹 level + hierarchy_path 조회
                     Map<String, Object> pp = new HashMap<>();
-                    pp.put("parentGroupId", parentGid);
-                    Map<String, Object> parentGroup = sqlSession.selectOne(NS + "selectParentGroupById", pp);
+                    pp.put("parent_group_id", parentGid);
+                    Map<String, Object> parentGroup = sqlSession.selectOne(NS + "select_parent_group_by_id", pp);
                     int parentLevel = parentGroup != null ? toInt(parentGroup.getOrDefault("group_level", 0)) : 0;
                     String parentPath = parentGroup != null ? toStr(parentGroup.get("hierarchy_path")) : "/" + parentGid + "/";
 
                     Map<String, Object> ins = new HashMap<>();
-                    ins.put("groupName", mName);
-                    ins.put("groupCode", mNameLower.replaceAll("\\s+", "_"));
-                    ins.put("parentGroupId", parentGid);
-                    ins.put("groupLevel", parentLevel + 1);
-                    ins.put("displayOrder", toInt(menu.getOrDefault("seq", 0)));
-                    ins.put("companyCode", companyCode);
-                    ins.put("userId", userId);
-                    ins.put("hierarchyPath", parentPath + "0/");
-                    ins.put("menuObjid", mObjid);
+                    ins.put("group_name", mName);
+                    ins.put("group_code", mNameLower.replaceAll("\\s+", "_"));
+                    ins.put("parent_group_id", parentGid);
+                    ins.put("group_level", parentLevel + 1);
+                    ins.put("display_order", toInt(menu.getOrDefault("seq", 0)));
+                    ins.put("company_code", companyCode);
+                    ins.put("user_id", userId);
+                    ins.put("hierarchy_path", parentPath + "0/");
+                    ins.put("menu_objid", mObjid);
                     ins.put("description", menu.get("menu_desc"));
-                    sqlSession.insert(NS + "insertScreenGroupForSync", ins);
+                    sqlSession.insert(NS + "insert_screen_group_for_sync", ins);
 
                     int newGid = toInt(ins.get("id"));
                     String hp = (parentPath + newGid + "/").replace("//", "/");
                     Map<String, Object> hpu = new HashMap<>();
                     hpu.put("id", newGid);
-                    hpu.put("hierarchyPath", hp);
-                    sqlSession.update(NS + "updateGroupHierarchyPathById", hpu);
+                    hpu.put("hierarchy_path", hp);
+                    sqlSession.update(NS + "update_group_hierarchy_path_by_id", hpu);
 
-                    Map<String, Object> up2 = new HashMap<>(); up2.put("groupId", newGid); up2.put("objid", mObjid);
-                    sqlSession.update(NS + "updateMenuScreenGroupId", up2);
+                    Map<String, Object> up2 = new HashMap<>(); up2.put("group_id", newGid); up2.put("objid", mObjid);
+                    sqlSession.update(NS + "update_menu_screen_group_id", up2);
 
                     menuToGroupMap.put(mObjid, newGid);
                     existingGroupIds.add(newGid);
@@ -1290,11 +1290,11 @@ public class ScreenGroupService extends BaseService {
 
     public Map<String, Object> getSyncStatus(String companyCode) {
         Map<String, Object> p = new HashMap<>();
-        p.put("companyCode", companyCode);
-        List<Map<String, Object>> groupStats = sqlSession.selectList(NS + "selectSyncStatusGroups", p);
-        List<Map<String, Object>> menuStats  = sqlSession.selectList(NS + "selectSyncStatusMenus", p);
+        p.put("company_code", companyCode);
+        List<Map<String, Object>> groupStats = sqlSession.selectList(NS + "select_sync_status_groups", p);
+        List<Map<String, Object>> menuStats  = sqlSession.selectList(NS + "select_sync_status_menus", p);
         Map<String, Object> status = new LinkedHashMap<>();
-        status.put("companyCode", companyCode);
+        status.put("company_code", companyCode);
         status.put("groups", groupStats);
         status.put("menus",  menuStats);
         return status;
@@ -1305,7 +1305,7 @@ public class ScreenGroupService extends BaseService {
     // ══════════════════════════════════════════════════════════════
 
     public Map<String, Object> syncAllCompanies(String userId) {
-        List<Map<String, Object>> companies = sqlSession.selectList(NS + "selectAllCompanyCodes", null);
+        List<Map<String, Object>> companies = sqlSession.selectList(NS + "select_all_company_codes", null);
         List<Map<String, Object>> results = new ArrayList<>();
         int successCount = 0, failedCount = 0;
 
@@ -1313,14 +1313,14 @@ public class ScreenGroupService extends BaseService {
             String code = (String) company.get("company_code");
             try {
                 Map<String, Object> r = syncScreenGroupsToMenu(code, userId);
-                r.put("companyCode", code);
+                r.put("company_code", code);
                 results.add(r);
                 if (Boolean.TRUE.equals(r.get("success"))) successCount++;
                 else failedCount++;
             } catch (Exception e) {
                 failedCount++;
                 Map<String, Object> r = new LinkedHashMap<>();
-                r.put("companyCode", code); r.put("success", false);
+                r.put("company_code", code); r.put("success", false);
                 r.put("error", e.getMessage());
                 results.add(r);
             }
@@ -1328,9 +1328,9 @@ public class ScreenGroupService extends BaseService {
 
         Map<String, Object> res = new LinkedHashMap<>();
         res.put("success", failedCount == 0);
-        res.put("totalCompanies", companies.size());
-        res.put("successCount", successCount);
-        res.put("failedCount", failedCount);
+        res.put("total_companies", companies.size());
+        res.put("success_count", successCount);
+        res.put("failed_count", failedCount);
         res.put("results", results);
         return res;
     }
@@ -1343,10 +1343,10 @@ public class ScreenGroupService extends BaseService {
                                    String screenName, String mainTable) {
         if (!map.containsKey(sid)) {
             Map<String, Object> entry = new LinkedHashMap<>();
-            entry.put("screenId", sid);
-            entry.put("screenName", screenName);
-            entry.put("mainTable", mainTable != null ? mainTable : "");
-            entry.put("subTables", new ArrayList<Map<String, Object>>());
+            entry.put("screen_id", sid);
+            entry.put("screen_name", screenName);
+            entry.put("main_table", mainTable != null ? mainTable : "");
+            entry.put("sub_tables", new ArrayList<Map<String, Object>>());
             map.put(sid, entry);
         }
     }
@@ -1369,13 +1369,13 @@ public class ScreenGroupService extends BaseService {
             @SuppressWarnings("unchecked")
             List<Map<String, Object>> fms = (List<Map<String, Object>>) fmsObj;
             fms.forEach(fm -> {
-                String sf = toStr(fm.getOrDefault("sourceField", fm.get("source_field")));
-                String tf = toStr(fm.getOrDefault("targetField", fm.get("target_field")));
+                String sf = toStr(fm.getOrDefault("source_field", fm.get("source_field")));
+                String tf = toStr(fm.getOrDefault("target_field", fm.get("target_field")));
                 Map<String, Object> m = new LinkedHashMap<>();
-                m.put("sourceField", sf);
-                m.put("targetField", tf);
-                m.put("sourceDisplayName", colLabelMap.getOrDefault(subTable + "." + sf, sf));
-                m.put("targetDisplayName", colLabelMap.getOrDefault(mainTable + "." + tf, tf));
+                m.put("source_field", sf);
+                m.put("target_field", tf);
+                m.put("source_display_name", colLabelMap.getOrDefault(subTable + "." + sf, sf));
+                m.put("target_display_name", colLabelMap.getOrDefault(mainTable + "." + tf, tf));
                 result.add(m);
             });
         } else if (colsObj instanceof List) {
@@ -1386,12 +1386,12 @@ public class ScreenGroupService extends BaseService {
                 if (mapping instanceof Map) {
                     @SuppressWarnings("unchecked")
                     Map<String, Object> mp = (Map<String, Object>) mapping;
-                    if ("source".equals(mp.get("type")) && mp.get("sourceField") != null) {
+                    if ("source".equals(mp.get("type")) && mp.get("source_field") != null) {
                         Map<String, Object> m = new LinkedHashMap<>();
-                        m.put("sourceField", col.getOrDefault("field", ""));
-                        m.put("targetField", mp.get("sourceField"));
-                        m.put("sourceDisplayName", col.getOrDefault("label", col.getOrDefault("field", "")));
-                        m.put("targetDisplayName", mp.get("sourceField"));
+                        m.put("source_field", col.getOrDefault("field", ""));
+                        m.put("target_field", mp.get("source_field"));
+                        m.put("source_display_name", col.getOrDefault("label", col.getOrDefault("field", "")));
+                        m.put("target_display_name", mp.get("source_field"));
                         result.add(m);
                     }
                 }
@@ -1402,8 +1402,8 @@ public class ScreenGroupService extends BaseService {
 
     private Map<String, Object> pairOf(String tableName, String columnName) {
         Map<String, Object> m = new HashMap<>();
-        m.put("tableName", tableName);
-        m.put("columnName", columnName);
+        m.put("table_name", tableName);
+        m.put("column_name", columnName);
         return m;
     }
 
@@ -1411,9 +1411,9 @@ public class ScreenGroupService extends BaseService {
                                         Object targetId, String reason) {
         Map<String, Object> d = new LinkedHashMap<>();
         d.put("action", action);
-        d.put("sourceName", name);
-        d.put("sourceId", sourceId);
-        if (targetId != null) d.put("targetId", targetId);
+        d.put("source_name", name);
+        d.put("source_id", sourceId);
+        if (targetId != null) d.put("target_id", targetId);
         if (reason != null)   d.put("reason", reason);
         return d;
     }
diff --git a/backend-spring/src/main/java/com/erp/service/ScreenManagementService.java b/backend-spring/src/main/java/com/erp/service/ScreenManagementService.java
index cfbe558d..8754b77f 100644
--- a/backend-spring/src/main/java/com/erp/service/ScreenManagementService.java
+++ b/backend-spring/src/main/java/com/erp/service/ScreenManagementService.java
@@ -38,19 +38,19 @@ public class ScreenManagementService extends BaseService {
         params.put("offset", (page - 1) * size);
 
         // searchTerm → searchLike (ILIKE 용 와일드카드)
-        Object searchTerm = params.get("searchTerm");
+        Object searchTerm = params.get("search_term");
         if (searchTerm != null && !searchTerm.toString().isBlank()) {
-            params.put("searchLike", "%" + searchTerm + "%");
+            params.put("search_like", "%" + searchTerm + "%");
         }
 
         // excludePop: String "true" → Boolean
-        Object epRaw = params.get("excludePop");
+        Object epRaw = params.get("exclude_pop");
         if (epRaw != null) {
-            params.put("excludePop", "true".equalsIgnoreCase(epRaw.toString()));
+            params.put("exclude_pop", "true".equalsIgnoreCase(epRaw.toString()));
         }
 
-        List<Map<String, Object>> data  = sqlSession.selectList(NS + "selectScreenList", params);
-        int total = sqlSession.selectOne(NS + "countScreenList", params);
+        List<Map<String, Object>> data  = sqlSession.selectList(NS + "select_screen_list", params);
+        int total = sqlSession.selectOne(NS + "count_screen_list", params);
 
         // 테이블 레이블 병합
         enrichWithTableLabels(data);
@@ -60,54 +60,54 @@ public class ScreenManagementService extends BaseService {
         result.put("total",      total);
         result.put("page",       page);
         result.put("size",       size);
-        result.put("totalPages", (int) Math.ceil((double) total / size));
+        result.put("total_pages", (int) Math.ceil((double) total / size));
         return result;
     }
 
     /** 단건 조회 (companyCode 무관) */
     public Map<String, Object> getScreenById(Integer screenId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId", screenId);
-        return sqlSession.selectOne(NS + "selectScreenById", params);
+        params.put("screen_id", screenId);
+        return sqlSession.selectOne(NS + "select_screen_by_id", params);
     }
 
     /** 화면에 할당된 메뉴 조회 */
     public Map<String, Object> getMenuByScreen(Integer screenId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",   screenId);
-        params.put("companyCode", companyCode);
-        return sqlSession.selectOne(NS + "selectMenuByScreen", params);
+        params.put("screen_id",   screenId);
+        params.put("company_code", companyCode);
+        return sqlSession.selectOne(NS + "select_menu_by_screen", params);
     }
 
     /** 화면 생성 */
     @Transactional
     public Map<String, Object> createScreen(Map<String, Object> body, String companyCode, String userId) {
         // 화면 코드 중복 체크
-        String screenCode = (String) body.get("screenCode");
+        String screenCode = (String) body.get("screen_code");
         if (screenCode != null) {
             Map<String, Object> ckParams = new HashMap<>();
-            ckParams.put("screenCode", screenCode);
-            int cnt = sqlSession.selectOne(NS + "checkScreenCodeExists", ckParams);
+            ckParams.put("screen_code", screenCode);
+            int cnt = sqlSession.selectOne(NS + "check_screen_code_exists", ckParams);
             if (cnt > 0) {
                 throw new IllegalStateException("DUPLICATE_SCREEN_CODE");
             }
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("screenName",           body.get("screenName"));
-        params.put("screenCode",           screenCode);
-        params.put("tableName",            body.get("tableName"));
-        params.put("companyCode",          companyCode);
+        params.put("screen_name",           body.get("screen_name"));
+        params.put("screen_code",           screenCode);
+        params.put("table_name",            body.get("table_name"));
+        params.put("company_code",          companyCode);
         params.put("description",          body.get("description"));
-        params.put("createdBy",            userId);
-        params.put("dbSourceType",         body.get("dbSourceType"));
-        params.put("dbConnectionId",       body.get("dbConnectionId"));
-        params.put("dataSourceType",       body.get("dataSourceType"));
-        params.put("restApiConnectionId",  body.get("restApiConnectionId"));
-        params.put("restApiEndpoint",      body.get("restApiEndpoint"));
-        params.put("restApiJsonPath",      body.get("restApiJsonPath"));
+        params.put("created_by",            userId);
+        params.put("db_source_type",         body.get("db_source_type"));
+        params.put("db_connection_id",       body.get("db_connection_id"));
+        params.put("data_source_type",       body.get("data_source_type"));
+        params.put("rest_api_connection_id",  body.get("rest_api_connection_id"));
+        params.put("rest_api_endpoint",      body.get("rest_api_endpoint"));
+        params.put("rest_api_json_path",      body.get("rest_api_json_path"));
 
-        return sqlSession.selectOne(NS + "insertScreen", params);
+        return sqlSession.selectOne(NS + "insert_screen", params);
     }
 
     /** 화면 수정 */
@@ -115,13 +115,13 @@ public class ScreenManagementService extends BaseService {
     public Map<String, Object> updateScreen(Integer screenId, Map<String, Object> body,
                                             String companyCode, String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",   screenId);
-        params.put("screenName", body.get("screenName"));
+        params.put("screen_id",   screenId);
+        params.put("screen_name", body.get("screen_name"));
         params.put("description",body.get("description"));
-        params.put("isActive",   body.getOrDefault("isActive", "Y"));
-        params.put("updatedBy",  userId);
+        params.put("is_active",   body.getOrDefault("is_active", "Y"));
+        params.put("updated_by",  userId);
 
-        int updated = sqlSession.update(NS + "updateScreen", params);
+        int updated = sqlSession.update(NS + "update_screen", params);
         if (updated == 0) return null;
         return getScreenById(screenId);
     }
@@ -131,19 +131,19 @@ public class ScreenManagementService extends BaseService {
     public Map<String, Object> updateScreenInfo(Integer screenId, Map<String, Object> body,
                                                 String companyCode, String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",             screenId);
-        params.put("screenName",           body.get("screenName"));
-        params.put("tableName",            body.get("tableName"));
+        params.put("screen_id",             screenId);
+        params.put("screen_name",           body.get("screen_name"));
+        params.put("table_name",            body.get("table_name"));
         params.put("description",          body.get("description"));
-        params.put("isActive",             body.getOrDefault("isActive", "Y"));
-        params.put("dataSourceType",       body.get("dataSourceType"));
-        params.put("dbSourceType",         body.get("dbSourceType"));
-        params.put("dbConnectionId",       body.get("dbConnectionId"));
-        params.put("restApiConnectionId",  body.get("restApiConnectionId"));
-        params.put("restApiEndpoint",      body.get("restApiEndpoint"));
-        params.put("restApiJsonPath",      body.get("restApiJsonPath"));
+        params.put("is_active",             body.getOrDefault("is_active", "Y"));
+        params.put("data_source_type",       body.get("data_source_type"));
+        params.put("db_source_type",         body.get("db_source_type"));
+        params.put("db_connection_id",       body.get("db_connection_id"));
+        params.put("rest_api_connection_id",  body.get("rest_api_connection_id"));
+        params.put("rest_api_endpoint",      body.get("rest_api_endpoint"));
+        params.put("rest_api_json_path",      body.get("rest_api_json_path"));
 
-        int updated = sqlSession.update(NS + "updateScreenInfo", params);
+        int updated = sqlSession.update(NS + "update_screen_info", params);
         if (updated == 0) return null;
         return getScreenById(screenId);
     }
@@ -152,9 +152,9 @@ public class ScreenManagementService extends BaseService {
     @Transactional
     public Map<String, Object> updateScreenTableName(Integer screenId, String tableName, String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",  screenId);
-        params.put("tableName", tableName);
-        int updated = sqlSession.update(NS + "updateScreenTableName", params);
+        params.put("screen_id",  screenId);
+        params.put("table_name", tableName);
+        int updated = sqlSession.update(NS + "update_screen_table_name", params);
         if (updated == 0) return null;
         return getScreenById(screenId);
     }
@@ -162,11 +162,11 @@ public class ScreenManagementService extends BaseService {
     /** 의존성 체크 */
     public Map<String, Object> checkScreenDependencies(Integer screenId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("companyCode", companyCode);
+        params.put("screen_id",    screenId);
+        params.put("company_code", companyCode);
 
-        List<Map<String, Object>> menuDeps   = sqlSession.selectList(NS + "selectMenuAssignmentDeps", params);
-        List<Map<String, Object>> layoutDeps = sqlSession.selectList(NS + "selectScreensWithLayouts", params);
+        List<Map<String, Object>> menuDeps   = sqlSession.selectList(NS + "select_menu_assignment_deps", params);
+        List<Map<String, Object>> layoutDeps = sqlSession.selectList(NS + "select_screens_with_layouts", params);
 
         // 이 화면을 모달로 사용하는 레이아웃 탐색
         List<Map<String, Object>> linkedScreens = detectLinkedScreensInternal(screenId, companyCode);
@@ -174,11 +174,11 @@ public class ScreenManagementService extends BaseService {
         boolean hasDependencies = !menuDeps.isEmpty() || !linkedScreens.isEmpty();
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("hasDependencies", hasDependencies);
+        result.put("has_dependencies", hasDependencies);
 
         Map<String, Object> deps = new LinkedHashMap<>();
-        deps.put("menuAssignments", menuDeps);
-        deps.put("linkedScreens",   linkedScreens);
+        deps.put("menu_assignments", menuDeps);
+        deps.put("linked_screens",   linkedScreens);
         result.put("dependencies", deps);
         return result;
     }
@@ -194,38 +194,38 @@ public class ScreenManagementService extends BaseService {
                                   String deleteReason) {
         // flow cleanup: 레이아웃 V2에서 flowId 수집 후 다른 화면에서 미사용 시 삭제
         Map<String, Object> layoutParams = new HashMap<>();
-        layoutParams.put("screenId",    screenId);
-        layoutParams.put("companyCode", companyCode);
+        layoutParams.put("screen_id",    screenId);
+        layoutParams.put("company_code", companyCode);
         List<Map<String, Object>> layouts = sqlSession.selectList(NS + "selectLayoutsV2ForFlowCleanup", layoutParams);
         if (!layouts.isEmpty()) {
             Object layoutDataRaw = layouts.get(0).get("layout_data");
             Set<Integer> flowIds = collectFlowIds(layoutDataRaw);
             for (Integer flowId : flowIds) {
                 Map<String, Object> usageParams = new HashMap<>();
-                usageParams.put("screenId",    screenId);
-                usageParams.put("companyCode", companyCode);
-                usageParams.put("flowId",      flowId);
-                int usageCount = sqlSession.selectOne(NS + "countFlowUsageInOtherScreens", usageParams);
+                usageParams.put("screen_id",    screenId);
+                usageParams.put("company_code", companyCode);
+                usageParams.put("flow_id",      flowId);
+                int usageCount = sqlSession.selectOne(NS + "count_flow_usage_in_other_screens", usageParams);
                 if (usageCount == 0) {
                     Map<String, Object> fp = new HashMap<>();
-                    fp.put("flowId",      flowId);
-                    fp.put("companyCode", companyCode);
-                    sqlSession.delete(NS + "deleteFlowStepConnections", fp);
-                    sqlSession.delete(NS + "deleteFlowSteps", fp);
-                    sqlSession.delete(NS + "deleteFlowDefinition", fp);
-                    sqlSession.delete(NS + "deleteNodeFlowsByFlowId", fp);
+                    fp.put("flow_id",      flowId);
+                    fp.put("company_code", companyCode);
+                    sqlSession.delete(NS + "delete_flow_step_connections", fp);
+                    sqlSession.delete(NS + "delete_flow_steps", fp);
+                    sqlSession.delete(NS + "delete_flow_definition", fp);
+                    sqlSession.delete(NS + "delete_node_flows_by_flow_id", fp);
                     log.info("화면 삭제 시 플로우 삭제: screenId={}, flowId={}", screenId, flowId);
                 }
             }
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",     screenId);
-        params.put("deletedBy",    userId);
-        params.put("deleteReason", deleteReason);
-        sqlSession.update(NS + "softDeleteScreen", params);
-        sqlSession.update(NS + "deactivateMenuAssignmentsByScreen", params);
-        sqlSession.delete(NS + "deleteScreenGroupLinks", params);
+        params.put("screen_id",     screenId);
+        params.put("deleted_by",    userId);
+        params.put("delete_reason", deleteReason);
+        sqlSession.update(NS + "soft_delete_screen", params);
+        sqlSession.update(NS + "deactivate_menu_assignments_by_screen", params);
+        sqlSession.delete(NS + "delete_screen_group_links", params);
     }
 
     /** 화면 일괄 소프트 삭제 */
@@ -239,9 +239,9 @@ public class ScreenManagementService extends BaseService {
     /** 화면명 중복 체크 */
     public boolean checkDuplicateScreenName(String screenName, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenName",  screenName);
-        params.put("companyCode", companyCode);
-        int cnt = sqlSession.selectOne(NS + "checkDuplicateScreenName", params);
+        params.put("screen_name",  screenName);
+        params.put("company_code", companyCode);
+        int cnt = sqlSession.selectOne(NS + "check_duplicate_screen_name", params);
         return cnt > 0;
     }
 
@@ -256,8 +256,8 @@ public class ScreenManagementService extends BaseService {
         params.put("size",   size);
         params.put("offset", (page - 1) * size);
 
-        List<Map<String, Object>> data  = sqlSession.selectList(NS + "selectDeletedScreenList", params);
-        int total = sqlSession.selectOne(NS + "countDeletedScreenList", params);
+        List<Map<String, Object>> data  = sqlSession.selectList(NS + "select_deleted_screen_list", params);
+        int total = sqlSession.selectOne(NS + "count_deleted_screen_list", params);
         data = commonService.toCamelCaseKeysList(data);
 
         Map<String, Object> result = new LinkedHashMap<>();
@@ -265,7 +265,7 @@ public class ScreenManagementService extends BaseService {
         result.put("total",      total);
         result.put("page",       page);
         result.put("size",       size);
-        result.put("totalPages", (int) Math.ceil((double) total / size));
+        result.put("total_pages", (int) Math.ceil((double) total / size));
         return result;
     }
 
@@ -279,19 +279,19 @@ public class ScreenManagementService extends BaseService {
         String screenCode = (String) screen.get("screen_code");
         if (screenCode != null) {
             Map<String, Object> ckParams = new HashMap<>();
-            ckParams.put("screenCode", screenCode);
-            ckParams.put("screenId",   screenId);
-            int cnt = sqlSession.selectOne(NS + "checkScreenCodeForRestore", ckParams);
+            ckParams.put("screen_code", screenCode);
+            ckParams.put("screen_id",   screenId);
+            int cnt = sqlSession.selectOne(NS + "check_screen_code_for_restore", ckParams);
             if (cnt > 0) {
                 throw new IllegalStateException("SCREEN_CODE_CONFLICT");
             }
         }
 
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("restoredBy",  userId);
-        sqlSession.update(NS + "restoreScreen", params);
-        sqlSession.update(NS + "reactivateMenuAssignmentsByScreen", params);
+        params.put("screen_id",    screenId);
+        params.put("restored_by",  userId);
+        sqlSession.update(NS + "restore_screen", params);
+        sqlSession.update(NS + "reactivate_menu_assignments_by_screen", params);
         return getScreenById(screenId);
     }
 
@@ -299,10 +299,10 @@ public class ScreenManagementService extends BaseService {
     @Transactional
     public void permanentDeleteScreen(Integer screenId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId", screenId);
+        params.put("screen_id", screenId);
         sqlSession.delete(NS + "permanentDeleteLayoutV1", params);
-        sqlSession.delete(NS + "permanentDeleteMenuAssignmentsByScreen", params);
-        sqlSession.delete(NS + "permanentDeleteScreen", params);
+        sqlSession.delete(NS + "permanent_delete_menu_assignments_by_screen", params);
+        sqlSession.delete(NS + "permanent_delete_screen", params);
     }
 
     /** 영구 삭제 (일괄) */
@@ -323,8 +323,8 @@ public class ScreenManagementService extends BaseService {
         // Advisory lock
         int lockId = companyCode.chars().sum();
         Map<String, Object> lockParams = new HashMap<>();
-        lockParams.put("lockId", (long) lockId);
-        sqlSession.selectOne(NS + "pgAdvisoryXactLock", lockParams);
+        lockParams.put("lock_id", (long) lockId);
+        sqlSession.selectOne(NS + "pg_advisory_xact_lock", lockParams);
 
         return calcNextScreenCode(companyCode);
     }
@@ -334,12 +334,12 @@ public class ScreenManagementService extends BaseService {
     public List<String> generateMultipleScreenCodes(String companyCode, int count) {
         int lockId = companyCode.chars().sum();
         Map<String, Object> lockParams = new HashMap<>();
-        lockParams.put("lockId", (long) lockId);
-        sqlSession.selectOne(NS + "pgAdvisoryXactLock", lockParams);
+        lockParams.put("lock_id", (long) lockId);
+        sqlSession.selectOne(NS + "pg_advisory_xact_lock", lockParams);
 
         Map<String, Object> params = new HashMap<>();
         params.put("pattern", companyCode + "_%");
-        List<Map<String, Object>> existing = sqlSession.selectList(NS + "selectScreenCodesByPattern", params);
+        List<Map<String, Object>> existing = sqlSession.selectList(NS + "select_screen_codes_by_pattern", params);
 
         Pattern numPattern = Pattern.compile("^" + Pattern.quote(companyCode) + "_(\\d+)$");
         int maxNumber = existing.stream()
@@ -366,42 +366,42 @@ public class ScreenManagementService extends BaseService {
     @Transactional
     public Map<String, Object> copyScreen(Integer screenId, String newName,
                                           String companyCode, String userId) {
-        Map<String, Object> original = sqlSession.selectOne(NS + "selectScreenForCopy", Map.of("screenId", screenId));
+        Map<String, Object> original = sqlSession.selectOne(NS + "select_screen_for_copy", Map.of("screen_id", screenId));
         if (original == null) throw new IllegalArgumentException("복사할 화면을 찾을 수 없습니다.");
 
         String newCode = generateScreenCode(companyCode);
 
         Map<String, Object> insertParams = new HashMap<>();
-        insertParams.put("screenName",          newName != null ? newName : original.get("screen_name") + " Copy");
-        insertParams.put("screenCode",          newCode);
-        insertParams.put("tableName",           original.get("table_name"));
-        insertParams.put("companyCode",         companyCode);
+        insertParams.put("screen_name",          newName != null ? newName : original.get("screen_name") + " Copy");
+        insertParams.put("screen_code",          newCode);
+        insertParams.put("table_name",           original.get("table_name"));
+        insertParams.put("company_code",         companyCode);
         insertParams.put("description",         original.get("description"));
-        insertParams.put("createdBy",           userId);
-        insertParams.put("dbSourceType",        original.get("db_source_type"));
-        insertParams.put("dbConnectionId",      original.get("db_connection_id"));
-        insertParams.put("dataSourceType",      original.get("data_source_type"));
-        insertParams.put("restApiConnectionId", original.get("rest_api_connection_id"));
-        insertParams.put("restApiEndpoint",     original.get("rest_api_endpoint"));
-        insertParams.put("restApiJsonPath",     original.get("rest_api_json_path"));
+        insertParams.put("created_by",           userId);
+        insertParams.put("db_source_type",        original.get("db_source_type"));
+        insertParams.put("db_connection_id",      original.get("db_connection_id"));
+        insertParams.put("data_source_type",      original.get("data_source_type"));
+        insertParams.put("rest_api_connection_id", original.get("rest_api_connection_id"));
+        insertParams.put("rest_api_endpoint",     original.get("rest_api_endpoint"));
+        insertParams.put("rest_api_json_path",     original.get("rest_api_json_path"));
 
-        Map<String, Object> newScreen = sqlSession.selectOne(NS + "insertScreenCopy", insertParams);
+        Map<String, Object> newScreen = sqlSession.selectOne(NS + "insert_screen_copy", insertParams);
         Integer newScreenId = toInteger(newScreen.get("screen_id"));
 
         // Layout V1 복사
-        List<Map<String, Object>> v1Rows = sqlSession.selectList(NS + "selectLayoutV1ForCopy", Map.of("screenId", screenId));
+        List<Map<String, Object>> v1Rows = sqlSession.selectList(NS + "selectLayoutV1ForCopy", Map.of("screen_id", screenId));
         for (Map<String, Object> row : v1Rows) {
             Map<String, Object> v1p = new HashMap<>(row);
-            v1p.put("screenId", newScreenId);
+            v1p.put("screen_id", newScreenId);
             sqlSession.insert(NS + "insertLayoutV1Copy", v1p);
         }
 
         // Layout V2 복사
-        List<Map<String, Object>> v2Rows = sqlSession.selectList(NS + "selectLayoutV2ForCopy", Map.of("screenId", screenId));
+        List<Map<String, Object>> v2Rows = sqlSession.selectList(NS + "selectLayoutV2ForCopy", Map.of("screen_id", screenId));
         for (Map<String, Object> row : v2Rows) {
             Map<String, Object> v2p = new HashMap<>(row);
-            v2p.put("screenId",    newScreenId);
-            v2p.put("companyCode", companyCode);
+            v2p.put("screen_id",    newScreenId);
+            v2p.put("company_code", companyCode);
             sqlSession.insert(NS + "insertLayoutV2Copy", v2p);
         }
 
@@ -412,7 +412,7 @@ public class ScreenManagementService extends BaseService {
     @Transactional
     public Map<String, Object> copyScreenWithModals(Integer screenId, Map<String, Object> body,
                                                     String companyCode, String userId) {
-        String newBaseName = (String) body.get("newBaseName");
+        String newBaseName = (String) body.get("new_base_name");
 
         // 메인 화면 복사
         Map<String, Object> mainScreen = copyScreen(screenId, newBaseName, companyCode, userId);
@@ -438,9 +438,9 @@ public class ScreenManagementService extends BaseService {
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("mainScreen",    mainScreen);
-        result.put("copiedScreens", copiedScreens);
-        result.put("idMapping",     idMapping);
+        result.put("main_screen",    mainScreen);
+        result.put("copied_screens", copiedScreens);
+        result.put("id_mapping",     idMapping);
         return result;
     }
 
@@ -449,26 +449,26 @@ public class ScreenManagementService extends BaseService {
     // ═══════════════════════════════════════════════════════════
 
     public List<Map<String, Object>> getTables() {
-        return sqlSession.selectList(NS + "selectPublicTables", new HashMap<>());
+        return sqlSession.selectList(NS + "select_public_tables", new HashMap<>());
     }
 
     public Map<String, Object> getTableInfo(String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        return sqlSession.selectOne(NS + "selectTableInfoByName", params);
+        params.put("table_name", tableName);
+        return sqlSession.selectOne(NS + "select_table_info_by_name", params);
     }
 
     public Map<String, Object> getTableColumns(String tableName, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName",   tableName);
-        params.put("companyCode", companyCode);
+        params.put("table_name",   tableName);
+        params.put("company_code", companyCode);
 
-        List<Map<String, Object>> columns     = sqlSession.selectList(NS + "selectTableColumnsInfo", params);
-        List<Map<String, Object>> typeColumns = sqlSession.selectList(NS + "selectTableTypeColumnsInfo", params);
+        List<Map<String, Object>> columns     = sqlSession.selectList(NS + "select_table_columns_info", params);
+        List<Map<String, Object>> typeColumns = sqlSession.selectList(NS + "select_table_type_columns_info", params);
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("columns",     columns);
-        result.put("typeColumns", typeColumns);
+        result.put("type_columns", typeColumns);
         return result;
     }
 
@@ -479,14 +479,14 @@ public class ScreenManagementService extends BaseService {
     @Transactional
     public void saveLayout(Integer screenId, List<Map<String, Object>> components, String userId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId", screenId);
+        params.put("screen_id", screenId);
         sqlSession.delete(NS + "deleteAllLayoutV1", params);
 
         for (int i = 0; i < components.size(); i++) {
             Map<String, Object> comp = components.get(i);
             Map<String, Object> ip = new HashMap<>(comp);
-            ip.put("screenId",     screenId);
-            ip.put("displayOrder", toInt(comp.getOrDefault("displayOrder", i), i));
+            ip.put("screen_id",     screenId);
+            ip.put("display_order", toInt(comp.getOrDefault("display_order", i), i));
             if (ip.get("properties") != null && !(ip.get("properties") instanceof String)) {
                 ip.put("properties", toJsonString(ip.get("properties")));
             }
@@ -496,7 +496,7 @@ public class ScreenManagementService extends BaseService {
 
     public List<Map<String, Object>> getLayoutV1(Integer screenId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId", screenId);
+        params.put("screen_id", screenId);
         return sqlSession.selectList(NS + "selectLayoutV1ByScreen", params);
     }
 
@@ -507,8 +507,8 @@ public class ScreenManagementService extends BaseService {
         if (screen == null) return null;
 
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("companyCode", companyCode);
+        params.put("screen_id",    screenId);
+        params.put("company_code", companyCode);
         List<Map<String, Object>> layouts = sqlSession.selectList(NS + "selectLayoutV1FromV1Table", params);
 
         List<Map<String, Object>> components = new ArrayList<>();
@@ -543,20 +543,20 @@ public class ScreenManagementService extends BaseService {
             Map<String, Object> comp = new LinkedHashMap<>();
             comp.put("id",              layout.get("component_id"));
             comp.put("type",            componentType);
-            comp.put("componentType",   componentType);
-            comp.put("componentUrl",    componentUrl);
+            comp.put("component_type",   componentType);
+            comp.put("component_url",    componentUrl);
             comp.put("position",        position);
             comp.put("size",            size);
-            comp.put("parentId",        layout.get("parent_id"));
-            comp.put("componentConfig", componentConfig);
+            comp.put("parent_id",        layout.get("parent_id"));
+            comp.put("component_config", componentConfig);
             components.add(comp);
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("components",       components);
-        result.put("gridSettings",     buildDefaultGridSettings());
-        result.put("screenResolution", null);
-        result.put("tableName",        screen.get("table_name"));
+        result.put("grid_settings",     buildDefaultGridSettings());
+        result.put("screen_resolution", null);
+        result.put("table_name",        screen.get("table_name"));
         return result;
     }
 
@@ -583,10 +583,10 @@ public class ScreenManagementService extends BaseService {
         }
 
         if (v2 != null) {
-            if (!v2.containsKey("gridSettings") || v2.get("gridSettings") == null) {
-                v2.put("gridSettings", buildDefaultGridSettings());
+            if (!v2.containsKey("grid_settings") || v2.get("grid_settings") == null) {
+                v2.put("grid_settings", buildDefaultGridSettings());
             }
-            if (!v2.containsKey("screenResolution") || v2.get("screenResolution") == null) {
+            if (!v2.containsKey("screen_resolution") || v2.get("screen_resolution") == null) {
                 Object compsObj = v2.get("components");
                 if (compsObj instanceof List && !((List<?>) compsObj).isEmpty()) {
                     List<Map<String, Object>> comps = (List<Map<String, Object>>) compsObj;
@@ -606,7 +606,7 @@ public class ScreenManagementService extends BaseService {
                     Map<String, Object> res = new LinkedHashMap<>();
                     res.put("width",  Math.max(1200, maxRight  + 100));
                     res.put("height", Math.max(800,  maxBottom + 100));
-                    v2.put("screenResolution", res);
+                    v2.put("screen_resolution", res);
                 }
             }
             return v2;
@@ -615,8 +615,8 @@ public class ScreenManagementService extends BaseService {
         List<Map<String, Object>> v1 = getLayoutV1(screenId);
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("components",       v1 != null ? v1 : Collections.emptyList());
-        result.put("gridSettings",     buildDefaultGridSettings());
-        result.put("screenResolution", null);
+        result.put("grid_settings",     buildDefaultGridSettings());
+        result.put("screen_resolution", null);
         return result;
     }
 
@@ -625,8 +625,8 @@ public class ScreenManagementService extends BaseService {
         gs.put("columns",    12);
         gs.put("gap",        16);
         gs.put("padding",    16);
-        gs.put("snapToGrid", true);
-        gs.put("showGrid",   true);
+        gs.put("snap_to_grid", true);
+        gs.put("show_grid",   true);
         return gs;
     }
 
@@ -637,9 +637,9 @@ public class ScreenManagementService extends BaseService {
     @SuppressWarnings("unchecked")
     public Map<String, Object> getLayoutV2(Integer screenId, String companyCode, Integer layerId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("companyCode", companyCode);
-        if (layerId != null) params.put("layerId", layerId);
+        params.put("screen_id",    screenId);
+        params.put("company_code", companyCode);
+        if (layerId != null) params.put("layer_id", layerId);
 
         Map<String, Object> row = sqlSession.selectOne(NS + "selectLayoutV2", params);
         if (row == null) return null;
@@ -658,9 +658,9 @@ public class ScreenManagementService extends BaseService {
     @SuppressWarnings("unchecked")
     private Map<String, Object> getLayoutV2Exact(Integer screenId, String companyCode, Integer layerId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("companyCode", companyCode);
-        if (layerId != null) params.put("layerId", layerId);
+        params.put("screen_id",    screenId);
+        params.put("company_code", companyCode);
+        if (layerId != null) params.put("layer_id", layerId);
 
         Map<String, Object> row = sqlSession.selectOne(NS + "selectLayoutV2Exact", params);
         if (row == null) return null;
@@ -679,32 +679,32 @@ public class ScreenManagementService extends BaseService {
     @Transactional
     public void saveLayoutV2(Integer screenId, Map<String, Object> body,
                              String companyCode, String userId) {
-        String layoutData = toJsonString(body.get("layoutData"));
-        Integer layerId   = toInt(body.getOrDefault("layerId", 1), 1);
-        String layerName  = (String) body.getOrDefault("layerName", "기본 레이어");
+        String layoutData = toJsonString(body.get("layout_data"));
+        Integer layerId   = toInt(body.getOrDefault("layer_id", 1), 1);
+        String layerName  = (String) body.getOrDefault("layer_name", "기본 레이어");
 
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",   screenId);
-        params.put("companyCode", companyCode);
-        params.put("layerId",    layerId);
-        params.put("layerName",  layerName);
-        params.put("layoutData", layoutData);
+        params.put("screen_id",   screenId);
+        params.put("company_code", companyCode);
+        params.put("layer_id",    layerId);
+        params.put("layer_name",  layerName);
+        params.put("layout_data", layoutData);
 
-        Object conditionConfig = body.get("conditionConfig");
+        Object conditionConfig = body.get("condition_config");
         if (conditionConfig != null) {
-            params.put("conditionConfig", toJsonString(conditionConfig));
+            params.put("condition_config", toJsonString(conditionConfig));
             sqlSession.insert(NS + "upsertLayoutV2WithCondition", params);
         } else {
             sqlSession.insert(NS + "upsertLayoutV2", params);
         }
 
         // 메인 테이블 추출
-        Object tableName = body.get("mainTableName");
+        Object tableName = body.get("main_table_name");
         if (tableName != null) {
             Map<String, Object> tp = new HashMap<>();
-            tp.put("screenId",  screenId);
-            tp.put("tableName", tableName);
-            sqlSession.update(NS + "updateScreenMainTable", tp);
+            tp.put("screen_id",  screenId);
+            tp.put("table_name", tableName);
+            sqlSession.update(NS + "update_screen_main_table", tp);
         }
     }
 
@@ -714,35 +714,35 @@ public class ScreenManagementService extends BaseService {
 
     public Map<String, Object> getLayoutPop(Integer screenId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("companyCode", companyCode);
-        return sqlSession.selectOne(NS + "selectLayoutPop", params);
+        params.put("screen_id",    screenId);
+        params.put("company_code", companyCode);
+        return sqlSession.selectOne(NS + "select_layout_pop", params);
     }
 
     @Transactional
     public void saveLayoutPop(Integer screenId, Map<String, Object> body,
                               String companyCode, String userId) {
-        String layoutData = toJsonString(body.get("layoutData"));
+        String layoutData = toJsonString(body.get("layout_data"));
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("companyCode", companyCode);
-        params.put("layoutData",  layoutData);
-        params.put("userId",      userId);
-        sqlSession.insert(NS + "upsertLayoutPop", params);
+        params.put("screen_id",    screenId);
+        params.put("company_code", companyCode);
+        params.put("layout_data",  layoutData);
+        params.put("user_id",      userId);
+        sqlSession.insert(NS + "upsert_layout_pop", params);
     }
 
     @Transactional
     public void deleteLayoutPop(Integer screenId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("companyCode", companyCode);
-        sqlSession.delete(NS + "deleteLayoutPopByScreen", params);
+        params.put("screen_id",    screenId);
+        params.put("company_code", companyCode);
+        sqlSession.delete(NS + "delete_layout_pop_by_screen", params);
     }
 
     public List<Map<String, Object>> getScreenIdsWithPopLayout(String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        return sqlSession.selectList(NS + "selectScreenIdsWithPopLayout", params);
+        params.put("company_code", companyCode);
+        return sqlSession.selectList(NS + "select_screen_ids_with_pop_layout", params);
     }
 
     // ═══════════════════════════════════════════════════════════
@@ -751,38 +751,38 @@ public class ScreenManagementService extends BaseService {
 
     public List<Map<String, Object>> getScreenLayers(Integer screenId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("companyCode", companyCode);
-        return sqlSession.selectList(NS + "selectLayersByScreen", params);
+        params.put("screen_id",    screenId);
+        params.put("company_code", companyCode);
+        return sqlSession.selectList(NS + "select_layers_by_screen", params);
     }
 
     public Map<String, Object> getLayerLayout(Integer screenId, Integer layerId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("layerId",     layerId);
-        params.put("companyCode", companyCode);
-        return sqlSession.selectOne(NS + "selectLayerLayout", params);
+        params.put("screen_id",    screenId);
+        params.put("layer_id",     layerId);
+        params.put("company_code", companyCode);
+        return sqlSession.selectOne(NS + "select_layer_layout", params);
     }
 
     @Transactional
     public boolean deleteLayer(Integer screenId, Integer layerId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("layerId",     layerId);
-        params.put("companyCode", companyCode);
-        return sqlSession.delete(NS + "deleteLayerById", params) > 0;
+        params.put("screen_id",    screenId);
+        params.put("layer_id",     layerId);
+        params.put("company_code", companyCode);
+        return sqlSession.delete(NS + "delete_layer_by_id", params) > 0;
     }
 
     @Transactional
     public void updateLayerCondition(Integer screenId, Integer layerId,
                                      Map<String, Object> body, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",       screenId);
-        params.put("layerId",        layerId);
-        params.put("companyCode",    companyCode);
-        params.put("conditionConfig", toJsonString(body.get("conditionConfig")));
-        if (body.containsKey("layerName")) params.put("layerName", body.get("layerName"));
-        sqlSession.update(NS + "updateLayerCondition", params);
+        params.put("screen_id",       screenId);
+        params.put("layer_id",        layerId);
+        params.put("company_code",    companyCode);
+        params.put("condition_config", toJsonString(body.get("condition_config")));
+        if (body.containsKey("layer_name")) params.put("layer_name", body.get("layer_name"));
+        sqlSession.update(NS + "update_layer_condition", params);
     }
 
     // ═══════════════════════════════════════════════════════════
@@ -791,63 +791,63 @@ public class ScreenManagementService extends BaseService {
 
     public List<Map<String, Object>> getScreenZones(Integer screenId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("companyCode", companyCode);
-        return sqlSession.selectList(NS + "selectZonesByScreen", params);
+        params.put("screen_id",    screenId);
+        params.put("company_code", companyCode);
+        return sqlSession.selectList(NS + "select_zones_by_screen", params);
     }
 
     @Transactional
     public Map<String, Object> createZone(Integer screenId, Map<String, Object> body, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",           screenId);
-        params.put("companyCode",        companyCode);
-        params.put("zoneName",           body.get("zoneName"));
+        params.put("screen_id",           screenId);
+        params.put("company_code",        companyCode);
+        params.put("zone_name",           body.get("zone_name"));
         params.put("x",                  body.get("x"));
         params.put("y",                  body.get("y"));
         params.put("width",              body.get("width"));
         params.put("height",             body.get("height"));
-        params.put("triggerComponentId", body.get("triggerComponentId"));
-        params.put("triggerOperator",    body.get("triggerOperator"));
+        params.put("trigger_component_id", body.get("trigger_component_id"));
+        params.put("trigger_operator",    body.get("trigger_operator"));
 
-        Map<String, Object> zone = sqlSession.selectOne(NS + "insertZone", params);
+        Map<String, Object> zone = sqlSession.selectOne(NS + "insert_zone", params);
 
         // 새 레이어 생성 (zone에 연결)
         Integer newLayerId = calcNextLayerId(screenId, companyCode);
         Map<String, Object> layerParams = new HashMap<>();
-        layerParams.put("screenId",       screenId);
-        layerParams.put("companyCode",    companyCode);
-        layerParams.put("layerId",        newLayerId);
-        layerParams.put("layerName",      body.getOrDefault("zoneName", "새 레이어"));
-        layerParams.put("layoutData",     "{\"components\":[]}");
-        layerParams.put("conditionConfig", "{}");
-        sqlSession.insert(NS + "insertLayerForZone", layerParams);
+        layerParams.put("screen_id",       screenId);
+        layerParams.put("company_code",    companyCode);
+        layerParams.put("layer_id",        newLayerId);
+        layerParams.put("layer_name",      body.getOrDefault("zone_name", "새 레이어"));
+        layerParams.put("layout_data",     "{\"components\":[]}");
+        layerParams.put("condition_config", "{}");
+        sqlSession.insert(NS + "insert_layer_for_zone", layerParams);
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("zone",    zone);
-        result.put("layerId", newLayerId);
+        result.put("layer_id", newLayerId);
         return result;
     }
 
     @Transactional
     public boolean updateZone(Integer zoneId, Map<String, Object> body, String companyCode) {
         Map<String, Object> params = new HashMap<>(body);
-        params.put("zoneId",      zoneId);
-        params.put("companyCode", companyCode);
-        return sqlSession.update(NS + "updateZone", params) > 0;
+        params.put("zone_id",      zoneId);
+        params.put("company_code", companyCode);
+        return sqlSession.update(NS + "update_zone", params) > 0;
     }
 
     @Transactional
     public boolean deleteZone(Integer zoneId, String companyCode) {
         // zone_id를 참조하는 condition_config 초기화
         Map<String, Object> clearParams = new HashMap<>();
-        clearParams.put("zoneIdStr",  String.valueOf(zoneId));
-        clearParams.put("companyCode", companyCode);
-        sqlSession.update(NS + "clearZoneConditionConfigs", clearParams);
+        clearParams.put("zone_id_str",  String.valueOf(zoneId));
+        clearParams.put("company_code", companyCode);
+        sqlSession.update(NS + "clear_zone_condition_configs", clearParams);
 
         Map<String, Object> params = new HashMap<>();
-        params.put("zoneId",      zoneId);
-        params.put("companyCode", companyCode);
-        return sqlSession.delete(NS + "deleteZoneById", params) > 0;
+        params.put("zone_id",      zoneId);
+        params.put("company_code", companyCode);
+        return sqlSession.delete(NS + "delete_zone_by_id", params) > 0;
     }
 
     @Transactional
@@ -855,17 +855,17 @@ public class ScreenManagementService extends BaseService {
                                                Map<String, Object> body, String companyCode) {
         Integer newLayerId = calcNextLayerId(screenId, companyCode);
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",       screenId);
-        params.put("companyCode",    companyCode);
-        params.put("layerId",        newLayerId);
-        params.put("layerName",      body.getOrDefault("layerName", "새 레이어"));
-        params.put("layoutData",     "{\"components\":[]}");
-        params.put("conditionConfig", toJsonString(body.getOrDefault("conditionConfig", new HashMap<>())));
-        sqlSession.insert(NS + "insertLayerForZone", params);
+        params.put("screen_id",       screenId);
+        params.put("company_code",    companyCode);
+        params.put("layer_id",        newLayerId);
+        params.put("layer_name",      body.getOrDefault("layer_name", "새 레이어"));
+        params.put("layout_data",     "{\"components\":[]}");
+        params.put("condition_config", toJsonString(body.getOrDefault("condition_config", new HashMap<>())));
+        sqlSession.insert(NS + "insert_layer_for_zone", params);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("layerId", newLayerId);
-        result.put("zoneId",  zoneId);
+        result.put("layer_id", newLayerId);
+        result.put("zone_id",  zoneId);
         return result;
     }
 
@@ -876,68 +876,68 @@ public class ScreenManagementService extends BaseService {
     @Transactional
     public Map<String, Object> assignScreenToMenu(Integer screenId, Map<String, Object> body,
                                                    String companyCode, String userId) {
-        Integer menuObjid = toInteger(body.get("menuObjid"));
+        Integer menuObjid = toInteger(body.get("menu_objid"));
 
         // 기존 할당 체크
         Map<String, Object> ckParams = new HashMap<>();
-        ckParams.put("screenId",    screenId);
-        ckParams.put("menuObjid",   menuObjid);
-        ckParams.put("companyCode", companyCode);
-        Map<String, Object> existing = sqlSession.selectOne(NS + "checkMenuAssignmentExists", ckParams);
+        ckParams.put("screen_id",    screenId);
+        ckParams.put("menu_objid",   menuObjid);
+        ckParams.put("company_code", companyCode);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "check_menu_assignment_exists", ckParams);
         if (existing != null) throw new IllegalStateException("ALREADY_ASSIGNED");
 
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",     screenId);
-        params.put("menuObjid",    menuObjid);
-        params.put("companyCode",  companyCode);
-        params.put("displayOrder", body.getOrDefault("displayOrder", 0));
-        params.put("createdBy",    userId);
-        sqlSession.insert(NS + "insertMenuAssignment", params);
+        params.put("screen_id",     screenId);
+        params.put("menu_objid",    menuObjid);
+        params.put("company_code",  companyCode);
+        params.put("display_order", body.getOrDefault("display_order", 0));
+        params.put("created_by",    userId);
+        sqlSession.insert(NS + "insert_menu_assignment", params);
 
         // screen_code 조회 → menu_info 업데이트
-        Map<String, Object> screenCodeRow = sqlSession.selectOne(NS + "selectScreenCode", Map.of("screenId", screenId));
+        Map<String, Object> screenCodeRow = sqlSession.selectOne(NS + "select_screen_code", Map.of("screen_id", screenId));
         String screenCode = screenCodeRow != null ? (String) screenCodeRow.get("screen_code") : null;
 
-        Map<String, Object> menuTypeRow = sqlSession.selectOne(NS + "selectMenuType", Map.of("menuObjid", menuObjid));
+        Map<String, Object> menuTypeRow = sqlSession.selectOne(NS + "select_menu_type", Map.of("menu_objid", menuObjid));
         String menuType = menuTypeRow != null ? (String) menuTypeRow.get("menu_type") : null;
 
         if (screenCode != null) {
             String menuUrl = "/screen/" + screenCode;
             Map<String, Object> updateParams = new HashMap<>();
-            updateParams.put("menuObjid",   menuObjid);
-            updateParams.put("menuUrl",     menuUrl);
-            updateParams.put("screenCode",  screenCode);
-            sqlSession.update(NS + "updateMenuInfoAssign", updateParams);
+            updateParams.put("menu_objid",   menuObjid);
+            updateParams.put("menu_url",     menuUrl);
+            updateParams.put("screen_code",  screenCode);
+            sqlSession.update(NS + "update_menu_info_assign", updateParams);
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("screenId",    screenId);
-        result.put("menuObjid",   menuObjid);
-        result.put("companyCode", companyCode);
-        result.put("screenCode",  screenCode);
+        result.put("screen_id",    screenId);
+        result.put("menu_objid",   menuObjid);
+        result.put("company_code", companyCode);
+        result.put("screen_code",  screenCode);
         return result;
     }
 
     public List<Map<String, Object>> getScreensByMenu(Integer menuObjid, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("menuObjid",   menuObjid);
-        params.put("companyCode", companyCode);
-        return sqlSession.selectList(NS + "selectScreensByMenu", params);
+        params.put("menu_objid",   menuObjid);
+        params.put("company_code", companyCode);
+        return sqlSession.selectList(NS + "select_screens_by_menu", params);
     }
 
     @Transactional
     public void unassignScreenFromMenu(Integer screenId, Integer menuObjid, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("menuObjid",   menuObjid);
-        params.put("companyCode", companyCode);
-        sqlSession.delete(NS + "deleteMenuAssignment", params);
-        sqlSession.update(NS + "updateMenuInfoUnassign", Map.of("menuObjid", menuObjid));
+        params.put("screen_id",    screenId);
+        params.put("menu_objid",   menuObjid);
+        params.put("company_code", companyCode);
+        sqlSession.delete(NS + "delete_menu_assignment", params);
+        sqlSession.update(NS + "update_menu_info_unassign", Map.of("menu_objid", menuObjid));
     }
 
     @Transactional
     public int cleanupDeletedMenuAssignments() {
-        return sqlSession.update(NS + "cleanupDeletedMenuAssignments", new HashMap<>());
+        return sqlSession.update(NS + "cleanup_deleted_menu_assignments", new HashMap<>());
     }
 
     // ═══════════════════════════════════════════════════════════
@@ -947,10 +947,10 @@ public class ScreenManagementService extends BaseService {
     @Transactional
     public void updateTabScreenReferences(Map<String, Object> body) {
         @SuppressWarnings("unchecked")
-        Map<String, Object> idMappingRaw = (Map<String, Object>) body.get("idMapping");
+        Map<String, Object> idMappingRaw = (Map<String, Object>) body.get("id_mapping");
         @SuppressWarnings("unchecked")
-        List<Integer> screenIds = (List<Integer>) body.get("screenIds");
-        String companyCode = (String) body.get("companyCode");
+        List<Integer> screenIds = (List<Integer>) body.get("screen_ids");
+        String companyCode = (String) body.get("company_code");
 
         if (idMappingRaw == null || screenIds == null) return;
 
@@ -969,25 +969,25 @@ public class ScreenManagementService extends BaseService {
     @Transactional
     public int copyScreenMenuAssignments(Map<String, Object> body) {
         @SuppressWarnings("unchecked")
-        List<Integer> screenIds = (List<Integer>) body.get("screenIds");
-        String sourceCompanyCode = (String) body.get("sourceCompanyCode");
-        String targetCompanyCode = (String) body.get("targetCompanyCode");
-        String userId            = (String) body.get("userId");
+        List<Integer> screenIds = (List<Integer>) body.get("screen_ids");
+        String sourceCompanyCode = (String) body.get("source_company_code");
+        String targetCompanyCode = (String) body.get("target_company_code");
+        String userId            = (String) body.get("user_id");
 
         Map<String, Object> params = new HashMap<>();
-        params.put("screenIds",         screenIds);
-        params.put("sourceCompanyCode", sourceCompanyCode);
-        List<Map<String, Object>> assignments = sqlSession.selectList(NS + "selectMenuAssignmentsForCopy", params);
+        params.put("screen_ids",         screenIds);
+        params.put("source_company_code", sourceCompanyCode);
+        List<Map<String, Object>> assignments = sqlSession.selectList(NS + "select_menu_assignments_for_copy", params);
 
         int count = 0;
         for (Map<String, Object> a : assignments) {
             Map<String, Object> ip = new HashMap<>();
-            ip.put("screenId",    a.get("screen_id"));
-            ip.put("menuObjid",   a.get("menu_objid"));
-            ip.put("companyCode", targetCompanyCode);
-            ip.put("displayOrder", a.get("display_order"));
-            ip.put("createdBy",   userId);
-            sqlSession.insert(NS + "insertMenuAssignmentCopy", ip);
+            ip.put("screen_id",    a.get("screen_id"));
+            ip.put("menu_objid",   a.get("menu_objid"));
+            ip.put("company_code", targetCompanyCode);
+            ip.put("display_order", a.get("display_order"));
+            ip.put("created_by",   userId);
+            sqlSession.insert(NS + "insert_menu_assignment_copy", ip);
             count++;
         }
         return count;
@@ -995,28 +995,28 @@ public class ScreenManagementService extends BaseService {
 
     @Transactional
     public int copyCodeCategoryAndCodes(Map<String, Object> body) {
-        String sourceCompanyCode = (String) body.get("sourceCompanyCode");
-        String targetCompanyCode = (String) body.get("targetCompanyCode");
-        String userId            = (String) body.get("userId");
+        String sourceCompanyCode = (String) body.get("source_company_code");
+        String targetCompanyCode = (String) body.get("target_company_code");
+        String userId            = (String) body.get("user_id");
 
         Map<String, Object> params = new HashMap<>();
-        params.put("sourceCompanyCode", sourceCompanyCode);
+        params.put("source_company_code", sourceCompanyCode);
 
-        List<Map<String, Object>> categories = sqlSession.selectList(NS + "selectCodeCategoryForCopy", params);
+        List<Map<String, Object>> categories = sqlSession.selectList(NS + "select_code_category_for_copy", params);
         int count = 0;
         for (Map<String, Object> cat : categories) {
             Map<String, Object> cp = new HashMap<>(cat);
-            cp.put("targetCompanyCode", targetCompanyCode);
-            sqlSession.insert(NS + "upsertCodeCategory", cp);
+            cp.put("target_company_code", targetCompanyCode);
+            sqlSession.insert(NS + "upsert_code_category", cp);
 
             Map<String, Object> codeParams = new HashMap<>();
-            codeParams.put("sourceCompanyCode", sourceCompanyCode);
-            codeParams.put("codeCategory",      cat.get("category_code"));
-            List<Map<String, Object>> codes = sqlSession.selectList(NS + "selectCodeInfoForCopy", codeParams);
+            codeParams.put("source_company_code", sourceCompanyCode);
+            codeParams.put("code_category",      cat.get("category_code"));
+            List<Map<String, Object>> codes = sqlSession.selectList(NS + "select_code_info_for_copy", codeParams);
             for (Map<String, Object> code : codes) {
                 Map<String, Object> cop = new HashMap<>(code);
-                cop.put("targetCompanyCode", targetCompanyCode);
-                sqlSession.insert(NS + "upsertCodeInfo", cop);
+                cop.put("target_company_code", targetCompanyCode);
+                sqlSession.insert(NS + "upsert_code_info", cop);
                 count++;
             }
         }
@@ -1025,58 +1025,58 @@ public class ScreenManagementService extends BaseService {
 
     @Transactional
     public int copyCategoryMapping(Map<String, Object> body) {
-        String sourceCompanyCode = (String) body.get("sourceCompanyCode");
-        String targetCompanyCode = (String) body.get("targetCompanyCode");
+        String sourceCompanyCode = (String) body.get("source_company_code");
+        String targetCompanyCode = (String) body.get("target_company_code");
 
         Map<String, Object> params = new HashMap<>();
-        params.put("sourceCompanyCode", sourceCompanyCode);
+        params.put("source_company_code", sourceCompanyCode);
 
-        List<Map<String, Object>> trees = sqlSession.selectList(NS + "selectCategoryTreeForCopy", params);
+        List<Map<String, Object>> trees = sqlSession.selectList(NS + "select_category_tree_for_copy", params);
         for (Map<String, Object> t : trees) {
             Map<String, Object> tp = new HashMap<>(t);
-            tp.put("targetCompanyCode", targetCompanyCode);
-            sqlSession.insert(NS + "upsertCategoryTree", tp);
+            tp.put("target_company_code", targetCompanyCode);
+            sqlSession.insert(NS + "upsert_category_tree", tp);
         }
 
-        List<Map<String, Object>> values = sqlSession.selectList(NS + "selectCategoryValueForCopy", params);
+        List<Map<String, Object>> values = sqlSession.selectList(NS + "select_category_value_for_copy", params);
         for (Map<String, Object> v : values) {
             Map<String, Object> vp = new HashMap<>(v);
-            vp.put("targetCompanyCode", targetCompanyCode);
-            sqlSession.insert(NS + "upsertCategoryValue", vp);
+            vp.put("target_company_code", targetCompanyCode);
+            sqlSession.insert(NS + "upsert_category_value", vp);
         }
         return trees.size() + values.size();
     }
 
     @Transactional
     public int copyTableTypeColumns(Map<String, Object> body) {
-        String sourceCompanyCode = (String) body.get("sourceCompanyCode");
-        String targetCompanyCode = (String) body.get("targetCompanyCode");
+        String sourceCompanyCode = (String) body.get("source_company_code");
+        String targetCompanyCode = (String) body.get("target_company_code");
 
         Map<String, Object> params = new HashMap<>();
-        params.put("sourceCompanyCode", sourceCompanyCode);
+        params.put("source_company_code", sourceCompanyCode);
 
-        List<Map<String, Object>> cols = sqlSession.selectList(NS + "selectTableTypeColumnsForCopy", params);
+        List<Map<String, Object>> cols = sqlSession.selectList(NS + "select_table_type_columns_for_copy", params);
         for (Map<String, Object> col : cols) {
             Map<String, Object> cp = new HashMap<>(col);
-            cp.put("targetCompanyCode", targetCompanyCode);
-            sqlSession.insert(NS + "upsertTableTypeColumn", cp);
+            cp.put("target_company_code", targetCompanyCode);
+            sqlSession.insert(NS + "upsert_table_type_column", cp);
         }
         return cols.size();
     }
 
     @Transactional
     public int copyCascadingRelation(Map<String, Object> body) {
-        String sourceCompanyCode = (String) body.get("sourceCompanyCode");
-        String targetCompanyCode = (String) body.get("targetCompanyCode");
+        String sourceCompanyCode = (String) body.get("source_company_code");
+        String targetCompanyCode = (String) body.get("target_company_code");
 
         Map<String, Object> params = new HashMap<>();
-        params.put("sourceCompanyCode", sourceCompanyCode);
+        params.put("source_company_code", sourceCompanyCode);
 
-        List<Map<String, Object>> rels = sqlSession.selectList(NS + "selectCascadingRelationForCopy", params);
+        List<Map<String, Object>> rels = sqlSession.selectList(NS + "select_cascading_relation_for_copy", params);
         for (Map<String, Object> rel : rels) {
             Map<String, Object> rp = new HashMap<>(rel);
-            rp.put("targetCompanyCode", targetCompanyCode);
-            sqlSession.insert(NS + "upsertCascadingRelation", rp);
+            rp.put("target_company_code", targetCompanyCode);
+            sqlSession.insert(NS + "upsert_cascading_relation", rp);
         }
         return rels.size();
     }
@@ -1087,9 +1087,9 @@ public class ScreenManagementService extends BaseService {
 
     public Map<String, Object> analyzePopScreenLinks(Integer screenId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("companyCode", companyCode);
-        Map<String, Object> popLayout = sqlSession.selectOne(NS + "selectLayoutPop", params);
+        params.put("screen_id",    screenId);
+        params.put("company_code", companyCode);
+        Map<String, Object> popLayout = sqlSession.selectOne(NS + "select_layout_pop", params);
 
         List<Integer> linkedScreenIds = new ArrayList<>();
         if (popLayout != null) {
@@ -1101,12 +1101,12 @@ public class ScreenManagementService extends BaseService {
         if (!linkedScreenIds.isEmpty()) {
             Map<String, Object> idsParams = new HashMap<>();
             idsParams.put("ids", linkedScreenIds);
-            linkedScreens = sqlSession.selectList(NS + "selectScreensByIds", idsParams);
+            linkedScreens = sqlSession.selectList(NS + "select_screens_by_ids", idsParams);
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("screenId",      screenId);
-        result.put("linkedScreens", linkedScreens);
+        result.put("screen_id",      screenId);
+        result.put("linked_screens", linkedScreens);
         return result;
     }
 
@@ -1114,32 +1114,32 @@ public class ScreenManagementService extends BaseService {
     public Map<String, Object> deployPopScreens(Map<String, Object> body, String userId) {
         @SuppressWarnings("unchecked")
         List<Map<String, Object>> screens = (List<Map<String, Object>>) body.get("screens");
-        String targetCompanyCode = (String) body.get("targetCompanyCode");
+        String targetCompanyCode = (String) body.get("target_company_code");
 
         List<Map<String, Object>> deployed = new ArrayList<>();
         for (Map<String, Object> screenDef : screens) {
-            String screenCode = (String) screenDef.get("screenCode");
-            String sourceCompanyCode = (String) screenDef.get("sourceCompanyCode");
+            String screenCode = (String) screenDef.get("screen_code");
+            String sourceCompanyCode = (String) screenDef.get("source_company_code");
 
             // 대상 회사에 화면 이미 있는지 체크
             Map<String, Object> existsParams = new HashMap<>();
-            existsParams.put("screenCode",  screenCode);
-            existsParams.put("companyCode", targetCompanyCode);
-            Map<String, Object> existing = sqlSession.selectOne(NS + "selectScreenByCode", existsParams);
+            existsParams.put("screen_code",  screenCode);
+            existsParams.put("company_code", targetCompanyCode);
+            Map<String, Object> existing = sqlSession.selectOne(NS + "select_screen_by_code", existsParams);
 
             Integer targetScreenId;
             if (existing == null) {
                 // 화면 생성
                 Map<String, Object> insertParams = new HashMap<>();
-                insertParams.put("screenName",    screenDef.get("screenName"));
-                insertParams.put("screenCode",    screenCode);
-                insertParams.put("tableName",     screenDef.get("tableName"));
-                insertParams.put("companyCode",   targetCompanyCode);
+                insertParams.put("screen_name",    screenDef.get("screen_name"));
+                insertParams.put("screen_code",    screenCode);
+                insertParams.put("table_name",     screenDef.get("table_name"));
+                insertParams.put("company_code",   targetCompanyCode);
                 insertParams.put("description",   screenDef.get("description"));
-                insertParams.put("createdBy",     userId);
-                insertParams.put("dbSourceType",  screenDef.get("dbSourceType"));
-                insertParams.put("dataSourceType", screenDef.get("dataSourceType"));
-                Map<String, Object> created = sqlSession.selectOne(NS + "insertScreenForDeploy", insertParams);
+                insertParams.put("created_by",     userId);
+                insertParams.put("db_source_type",  screenDef.get("db_source_type"));
+                insertParams.put("data_source_type", screenDef.get("data_source_type"));
+                Map<String, Object> created = sqlSession.selectOne(NS + "insert_screen_for_deploy", insertParams);
                 targetScreenId = toInteger(created.get("screen_id"));
             } else {
                 targetScreenId = toInteger(existing.get("screen_id"));
@@ -1147,23 +1147,23 @@ public class ScreenManagementService extends BaseService {
 
             // POP 레이아웃 복사
             Map<String, Object> sourceParams = new HashMap<>();
-            sourceParams.put("screenId",    toInteger(screenDef.get("screenId")));
-            sourceParams.put("companyCode", sourceCompanyCode);
-            Map<String, Object> sourceLayout = sqlSession.selectOne(NS + "selectLayoutPop", sourceParams);
+            sourceParams.put("screen_id",    toInteger(screenDef.get("screen_id")));
+            sourceParams.put("company_code", sourceCompanyCode);
+            Map<String, Object> sourceLayout = sqlSession.selectOne(NS + "select_layout_pop", sourceParams);
 
             if (sourceLayout != null) {
                 Map<String, Object> deployParams = new HashMap<>();
-                deployParams.put("screenId",    targetScreenId);
-                deployParams.put("companyCode", targetCompanyCode);
-                deployParams.put("layoutData",  toJsonString(sourceLayout.get("layout_data")));
-                deployParams.put("userId",      userId);
-                sqlSession.insert(NS + "upsertPopLayoutDeploy", deployParams);
+                deployParams.put("screen_id",    targetScreenId);
+                deployParams.put("company_code", targetCompanyCode);
+                deployParams.put("layout_data",  toJsonString(sourceLayout.get("layout_data")));
+                deployParams.put("user_id",      userId);
+                sqlSession.insert(NS + "upsert_pop_layout_deploy", deployParams);
             }
 
             Map<String, Object> result = new LinkedHashMap<>();
-            result.put("screenCode",  screenCode);
-            result.put("screenId",    targetScreenId);
-            result.put("companyCode", targetCompanyCode);
+            result.put("screen_code",  screenCode);
+            result.put("screen_id",    targetScreenId);
+            result.put("company_code", targetCompanyCode);
             deployed.add(result);
         }
 
@@ -1180,8 +1180,8 @@ public class ScreenManagementService extends BaseService {
     /** 연결된 모달 화면 탐색 (V1 레이아웃 properties 내 screenId 참조) */
     private List<Map<String, Object>> detectLinkedScreensInternal(Integer screenId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId", screenId);
-        List<Map<String, Object>> layouts = sqlSession.selectList(NS + "selectLayoutsForLinkedModal", params);
+        params.put("screen_id", screenId);
+        List<Map<String, Object>> layouts = sqlSession.selectList(NS + "select_layouts_for_linked_modal", params);
 
         Set<Integer> linkedIds = new LinkedHashSet<>();
         for (Map<String, Object> layout : layouts) {
@@ -1198,14 +1198,14 @@ public class ScreenManagementService extends BaseService {
 
         Map<String, Object> idsParams = new HashMap<>();
         idsParams.put("ids", new ArrayList<>(linkedIds));
-        return sqlSession.selectList(NS + "selectScreensByIds", idsParams);
+        return sqlSession.selectList(NS + "select_screens_by_ids", idsParams);
     }
 
     /** JSON 노드 트리를 재귀 탐색하여 screenId 참조 수집 */
     private void collectScreenIdRefs(JsonNode node, Set<Integer> ids) {
         if (node == null) return;
         if (node.isObject()) {
-            JsonNode screenIdNode = node.get("screenId");
+            JsonNode screenIdNode = node.get("screen_id");
             if (screenIdNode != null && screenIdNode.isNumber()) {
                 ids.add(screenIdNode.asInt());
             }
@@ -1236,22 +1236,22 @@ public class ScreenManagementService extends BaseService {
     private void collectFlowIdFromComponent(JsonNode comp, Set<Integer> ids) {
         if (comp == null) return;
         // overrides.flowId
-        extractFlowIdFromPath(comp, ids, "overrides", "flowId");
+        extractFlowIdFromPath(comp, ids, "overrides", "flow_id");
         // overrides.webTypeConfig.dataflowConfig.flowConfig.flowId
-        extractFlowIdFromPath(comp, ids, "overrides", "webTypeConfig", "dataflowConfig", "flowConfig", "flowId");
+        extractFlowIdFromPath(comp, ids, "overrides", "web_type_config", "dataflow_config", "flow_config", "flow_id");
         // overrides.webTypeConfig.dataflowConfig.flowControls[].flowId
-        JsonNode controls = navigatePath(comp, "overrides", "webTypeConfig", "dataflowConfig", "flowControls");
+        JsonNode controls = navigatePath(comp, "overrides", "web_type_config", "dataflow_config", "flow_controls");
         if (controls != null && controls.isArray()) {
             for (JsonNode ctrl : controls) {
-                JsonNode fid = ctrl.get("flowId");
+                JsonNode fid = ctrl.get("flow_id");
                 if (fid != null && fid.isNumber()) ids.add(fid.asInt());
             }
         }
         // overrides.action.excelAfterUploadFlows[].flowId
-        JsonNode flows = navigatePath(comp, "overrides", "action", "excelAfterUploadFlows");
+        JsonNode flows = navigatePath(comp, "overrides", "action", "excel_after_upload_flows");
         if (flows != null && flows.isArray()) {
             for (JsonNode f : flows) {
-                JsonNode fid = f.get("flowId");
+                JsonNode fid = f.get("flow_id");
                 if (fid != null && fid.isNumber()) ids.add(fid.asInt());
             }
         }
@@ -1292,7 +1292,7 @@ public class ScreenManagementService extends BaseService {
                                                 String companyCode) {
         for (Integer sid : screenIds) {
             Map<String, Object> p = new HashMap<>();
-            p.put("screenId", sid);
+            p.put("screen_id", sid);
 
             // V1
             List<Map<String, Object>> v1Layouts = sqlSession.selectList(NS + "selectLayoutsV1ForScreen", p);
@@ -1302,7 +1302,7 @@ public class ScreenManagementService extends BaseService {
                 String updated = replaceScreenIdsInJson(propsRaw.toString(), idMapping);
                 if (updated != null) {
                     Map<String, Object> up = new HashMap<>();
-                    up.put("layoutId",   layout.get("layout_id"));
+                    up.put("layout_id",   layout.get("layout_id"));
                     up.put("properties", updated);
                     sqlSession.update(NS + "updateLayoutV1Properties", up);
                 }
@@ -1316,10 +1316,10 @@ public class ScreenManagementService extends BaseService {
                 String updated = replaceScreenIdsInJson(dataRaw.toString(), idMapping);
                 if (updated != null) {
                     Map<String, Object> up = new HashMap<>();
-                    up.put("screenId",   layout.get("screen_id"));
-                    up.put("layerId",    layout.get("layer_id"));
-                    up.put("companyCode", layout.get("company_code"));
-                    up.put("layoutData", updated);
+                    up.put("screen_id",   layout.get("screen_id"));
+                    up.put("layer_id",    layout.get("layer_id"));
+                    up.put("company_code", layout.get("company_code"));
+                    up.put("layout_data", updated);
                     sqlSession.update(NS + "updateLayoutV2Data", up);
                 }
             }
@@ -1351,16 +1351,16 @@ public class ScreenManagementService extends BaseService {
         if (tableNames.isEmpty()) return;
 
         Map<String, Object> params = new HashMap<>();
-        params.put("tableNames", new ArrayList<>(tableNames));
+        params.put("table_names", new ArrayList<>(tableNames));
         try {
-            List<Map<String, Object>> labels = sqlSession.selectList(NS + "selectTableLabelsByNames", params);
+            List<Map<String, Object>> labels = sqlSession.selectList(NS + "select_table_labels_by_names", params);
             Map<String, String> labelMap = new HashMap<>();
             for (Map<String, Object> row : labels) {
                 labelMap.put((String) row.get("table_name"), (String) row.get("table_label"));
             }
             for (Map<String, Object> s : screens) {
                 Object tn = s.get("table_name");
-                if (tn != null) s.put("tableLabel", labelMap.get(tn.toString()));
+                if (tn != null) s.put("table_label", labelMap.get(tn.toString()));
             }
         } catch (Exception ignored) {}
     }
@@ -1369,7 +1369,7 @@ public class ScreenManagementService extends BaseService {
     private String calcNextScreenCode(String companyCode) {
         Map<String, Object> params = new HashMap<>();
         params.put("pattern", companyCode + "_%");
-        List<Map<String, Object>> existing = sqlSession.selectList(NS + "selectScreenCodesByPattern", params);
+        List<Map<String, Object>> existing = sqlSession.selectList(NS + "select_screen_codes_by_pattern", params);
 
         Pattern numPattern = Pattern.compile("^" + Pattern.quote(companyCode) + "_(\\d+)$");
         int maxNumber = existing.stream()
@@ -1387,9 +1387,9 @@ public class ScreenManagementService extends BaseService {
     /** 다음 레이어 ID 계산 */
     private int calcNextLayerId(Integer screenId, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("screenId",    screenId);
-        params.put("companyCode", companyCode);
-        Map<String, Object> row = sqlSession.selectOne(NS + "selectMaxLayerId", params);
+        params.put("screen_id",    screenId);
+        params.put("company_code", companyCode);
+        Map<String, Object> row = sqlSession.selectOne(NS + "select_max_layer_id", params);
         int maxId = row != null ? toInt(row.getOrDefault("max_id", 1), 1) : 1;
         return maxId + 1;
     }
diff --git a/backend-spring/src/main/java/com/erp/service/ShippingOrderService.java b/backend-spring/src/main/java/com/erp/service/ShippingOrderService.java
index aedf771a..88593d80 100644
--- a/backend-spring/src/main/java/com/erp/service/ShippingOrderService.java
+++ b/backend-spring/src/main/java/com/erp/service/ShippingOrderService.java
@@ -40,15 +40,15 @@ public class ShippingOrderService extends BaseService {
     // ─── 다음 출하지시번호 미리보기 ─────────────────────────────────────────────
 
     public Map<String, Object> previewNextNo(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
-        String today = LocalDate.now().format(DateTimeFormatter.ofPattern("yyyyMMdd"));
+        String companyCode = (String) params.get("company_code");
+        String today = LocalDate.now().format(DateTimeFormatter.ofPattern("yyyy_m_mdd"));
         Map<String, Object> seqParams = new HashMap<>();
-        seqParams.put("companyCode", companyCode);
-        seqParams.put("likePattern", "SI-" + today + "-%");
+        seqParams.put("company_code", companyCode);
+        seqParams.put("like_pattern", "SI-" + today + "-%");
         Map<String, Object> seqRow = sqlSession.selectOne("shippingOrder.getShippingOrderSeqNo", seqParams);
         long seq = seqRow != null ? ((Number) seqRow.get("seq")).longValue() : 1L;
         Map<String, Object> result = new HashMap<>();
-        result.put("instructionNo", String.format("SI-%s-%03d", today, seq));
+        result.put("instruction_no", String.format("SI-%s-%03d", today, seq));
         return result;
     }
 
@@ -56,8 +56,8 @@ public class ShippingOrderService extends BaseService {
 
     @Transactional
     public Map<String, Object> save(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
-        String userId = (String) params.get("userId");
+        String companyCode = (String) params.get("company_code");
+        String userId = (String) params.get("user_id");
         Object editId = params.get("id");
 
         @SuppressWarnings("unchecked")
@@ -70,31 +70,31 @@ public class ShippingOrderService extends BaseService {
             // 수정
             instructionId = ((Number) editId).longValue();
             Map<String, Object> infoParams = new HashMap<>();
-            infoParams.put("companyCode", companyCode);
+            infoParams.put("company_code", companyCode);
             infoParams.put("id", instructionId);
             Map<String, Object> existing = sqlSession.selectOne("shippingOrder.getShippingOrderInfo", infoParams);
             if (existing == null) {
                 throw new IllegalArgumentException("출하지시를 찾을 수 없습니다");
             }
             instructionNo = (String) existing.get("instruction_no");
-            params.put("updatedBy", userId);
+            params.put("updated_by", userId);
             sqlSession.update("shippingOrder.updateShippingOrder", params);
 
             Map<String, Object> delParams = new HashMap<>();
-            delParams.put("companyCode", companyCode);
-            delParams.put("instructionId", instructionId);
+            delParams.put("company_code", companyCode);
+            delParams.put("instruction_id", instructionId);
             sqlSession.delete("shippingOrder.deleteShippingOrderDetails", delParams);
         } else {
             // 신규 - 채번 생성
-            String today = LocalDate.now().format(DateTimeFormatter.ofPattern("yyyyMMdd"));
+            String today = LocalDate.now().format(DateTimeFormatter.ofPattern("yyyy_m_mdd"));
             Map<String, Object> seqParams = new HashMap<>();
-            seqParams.put("companyCode", companyCode);
-            seqParams.put("likePattern", "SI-" + today + "-%");
+            seqParams.put("company_code", companyCode);
+            seqParams.put("like_pattern", "SI-" + today + "-%");
             Map<String, Object> seqRow = sqlSession.selectOne("shippingOrder.getShippingOrderSeqNo", seqParams);
             long seq = seqRow != null ? ((Number) seqRow.get("seq")).longValue() : 1L;
             instructionNo = String.format("SI-%s-%03d", today, seq);
-            params.put("instructionNo", instructionNo);
-            params.put("createdBy", userId);
+            params.put("instruction_no", instructionNo);
+            params.put("created_by", userId);
             sqlSession.insert("shippingOrder.insertShippingOrder", params);
             instructionId = ((Number) params.get("id")).longValue();
         }
@@ -103,27 +103,27 @@ public class ShippingOrderService extends BaseService {
         if (items != null) {
             for (Map<String, Object> item : items) {
                 Map<String, Object> d = new HashMap<>();
-                d.put("companyCode", companyCode);
-                d.put("instructionId", instructionId);
-                d.put("shipmentPlanId", item.get("shipmentPlanId"));
-                d.put("salesOrderId", item.get("salesOrderId"));
-                d.put("detailId", item.get("detailId"));
-                d.put("itemCode", item.get("itemCode"));
-                d.put("itemName", item.get("itemName"));
+                d.put("company_code", companyCode);
+                d.put("instruction_id", instructionId);
+                d.put("shipment_plan_id", item.get("shipment_plan_id"));
+                d.put("sales_order_id", item.get("sales_order_id"));
+                d.put("detail_id", item.get("detail_id"));
+                d.put("item_code", item.get("item_code"));
+                d.put("item_name", item.get("item_name"));
                 d.put("spec", item.get("spec"));
                 d.put("material", item.get("material"));
-                d.put("orderQty", item.getOrDefault("orderQty", 0));
-                d.put("planQty", item.getOrDefault("planQty", 0));
-                d.put("shipQty", item.getOrDefault("shipQty", 0));
-                d.put("sourceType", item.getOrDefault("sourceType", "shipmentPlan"));
-                d.put("createdBy", userId);
+                d.put("order_qty", item.getOrDefault("order_qty", 0));
+                d.put("plan_qty", item.getOrDefault("plan_qty", 0));
+                d.put("ship_qty", item.getOrDefault("ship_qty", 0));
+                d.put("source_type", item.getOrDefault("source_type", "shipment_plan"));
+                d.put("created_by", userId);
                 sqlSession.insert("shippingOrder.insertShippingOrderDetail", d);
             }
         }
 
         Map<String, Object> result = new HashMap<>();
         result.put("id", instructionId);
-        result.put("instructionNo", instructionNo);
+        result.put("instruction_no", instructionNo);
         return result;
     }
 
@@ -133,7 +133,7 @@ public class ShippingOrderService extends BaseService {
     public Map<String, Object> remove(Map<String, Object> params) {
         int deletedCount = sqlSession.delete("shippingOrder.deleteShippingOrders", params);
         Map<String, Object> result = new HashMap<>();
-        result.put("deletedCount", deletedCount);
+        result.put("deleted_count", deletedCount);
         return result;
     }
 
@@ -167,9 +167,9 @@ public class ShippingOrderService extends BaseService {
 
     private void applySourcePagination(Map<String, Object> params) {
         int page = toInt(params.getOrDefault("page", 1), 1);
-        int pageSize = Math.min(100, Math.max(1, toInt(params.getOrDefault("pageSize", 20), 20)));
+        int pageSize = Math.min(100, Math.max(1, toInt(params.getOrDefault("page_size", 20), 20)));
         params.put("page", page);
-        params.put("pageSize", pageSize);
+        params.put("page_size", pageSize);
         params.put("offset", (page - 1) * pageSize);
     }
 
@@ -177,9 +177,9 @@ public class ShippingOrderService extends BaseService {
                                                       Map<String, Object> params) {
         Map<String, Object> result = new HashMap<>();
         result.put("data", data);
-        result.put("totalCount", totalCount);
+        result.put("total_count", totalCount);
         result.put("page", params.get("page"));
-        result.put("pageSize", params.get("pageSize"));
+        result.put("page_size", params.get("page_size"));
         return result;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/ShippingPlanService.java b/backend-spring/src/main/java/com/erp/service/ShippingPlanService.java
index 7285cccc..8ff614a7 100644
--- a/backend-spring/src/main/java/com/erp/service/ShippingPlanService.java
+++ b/backend-spring/src/main/java/com/erp/service/ShippingPlanService.java
@@ -71,7 +71,7 @@ public class ShippingPlanService extends BaseService {
     // ─── 품목별 집계 + 기존 출하계획 조회 ───
 
     public Map<String, Object> getAggregate(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
+        String companyCode = (String) params.get("company_code");
         String idsParam = (String) params.get("ids");
 
         if (idsParam == null || idsParam.isBlank()) {
@@ -168,12 +168,12 @@ public class ShippingPlanService extends BaseService {
             double inProductionQty = toDouble(prodRows.isEmpty() ? null : prodRows.get(0).get("in_production"));
 
             Map<String, Object> partResult = new LinkedHashMap<>();
-            partResult.put("totalBalance", totalBalance);
-            partResult.put("totalPlanQty", totalPlanQty);
-            partResult.put("currentStock", currentStock);
-            partResult.put("availableStock", currentStock - totalPlanQty);
-            partResult.put("inProductionQty", inProductionQty);
-            partResult.put("existingPlans", existingPlans);
+            partResult.put("total_balance", totalBalance);
+            partResult.put("total_plan_qty", totalPlanQty);
+            partResult.put("current_stock", currentStock);
+            partResult.put("available_stock", currentStock - totalPlanQty);
+            partResult.put("in_production_qty", inProductionQty);
+            partResult.put("existing_plans", existingPlans);
             partResult.put("orders", partOrders);
             resultData.put(partCode, partResult);
         }
@@ -242,8 +242,8 @@ public class ShippingPlanService extends BaseService {
 
     @Transactional
     public Map<String, Object> batchSave(Map<String, Object> params) {
-        String companyCode = (String) params.get("companyCode");
-        String userId = (String) params.get("userId");
+        String companyCode = (String) params.get("company_code");
+        String userId = (String) params.get("user_id");
 
         @SuppressWarnings("unchecked")
         List<Map<String, Object>> plans = (List<Map<String, Object>>) params.get("plans");
@@ -255,7 +255,7 @@ public class ShippingPlanService extends BaseService {
 
         if (source == null) {
             List<String> sourceIds = plans.stream()
-                .map(p -> p.get("sourceId") != null ? p.get("sourceId").toString() : "")
+                .map(p -> p.get("source_id") != null ? p.get("source_id").toString() : "")
                 .toList();
             source = detectSource(sourceIds);
         }
@@ -264,13 +264,13 @@ public class ShippingPlanService extends BaseService {
         final String detectedSource = source;
 
         for (Map<String, Object> plan : plans) {
-            String sourceId = plan.get("sourceId") != null ? plan.get("sourceId").toString() : null;
+            String sourceId = plan.get("source_id") != null ? plan.get("source_id").toString() : null;
             if (sourceId == null) continue;
 
-            double planQty = toDouble(plan.get("planQty"));
+            double planQty = toDouble(plan.get("plan_qty"));
             if (planQty <= 0) continue;
 
-            String planDate = plan.get("planDate") != null ? plan.get("planDate").toString() : null;
+            String planDate = plan.get("plan_date") != null ? plan.get("plan_date").toString() : null;
 
             if ("detail".equals(detectedSource)) {
                 List<Map<String, Object>> detailRows = jdbcTemplate.queryForList(
@@ -359,7 +359,7 @@ public class ShippingPlanService extends BaseService {
         }
 
         Map<String, Object> result = new HashMap<>();
-        result.put("savedCount", savedPlans.size());
+        result.put("saved_count", savedPlans.size());
         result.put("message", savedPlans.size() + "건 저장 완료");
         result.put("data", savedPlans);
         return result;
diff --git a/backend-spring/src/main/java/com/erp/service/SystemNoticeService.java b/backend-spring/src/main/java/com/erp/service/SystemNoticeService.java
index a1dc920b..b2f15b08 100644
--- a/backend-spring/src/main/java/com/erp/service/SystemNoticeService.java
+++ b/backend-spring/src/main/java/com/erp/service/SystemNoticeService.java
@@ -24,11 +24,11 @@ public class SystemNoticeService extends BaseService {
     public List<Map<String, Object>> getSystemNoticeList(Map<String, Object> params) {
         // is_active → isActive 키 변환 (프론트엔드 snake_case 호환)
         Object isActiveRaw = params.remove("is_active");
-        if (isActiveRaw == null) isActiveRaw = params.get("isActive");
+        if (isActiveRaw == null) isActiveRaw = params.get("is_active");
         if (isActiveRaw instanceof String s && !s.isBlank()) {
-            params.put("isActive", "true".equalsIgnoreCase(s) || "1".equals(s));
+            params.put("is_active", "true".equalsIgnoreCase(s) || "1".equals(s));
         } else {
-            params.remove("isActive");
+            params.remove("is_active");
         }
 
         commonService.applyCompanyCodeFilter(params);
@@ -47,7 +47,7 @@ public class SystemNoticeService extends BaseService {
         Object id = params.get("id");
         Map<String, Object> fetchParams = new HashMap<>();
         fetchParams.put("id", id);
-        fetchParams.put("companyCode", "*"); // 방금 생성한 row이므로 company_code 필터 없이 조회
+        fetchParams.put("company_code", "*"); // 방금 생성한 row이므로 company_code 필터 없이 조회
         return sqlSession.selectOne("systemNotice.getSystemNoticeInfo", fetchParams);
     }
 
@@ -66,7 +66,7 @@ public class SystemNoticeService extends BaseService {
         Object id = params.get("id");
         Map<String, Object> fetchParams = new HashMap<>();
         fetchParams.put("id", id);
-        fetchParams.put("companyCode", "*");
+        fetchParams.put("company_code", "*");
         return sqlSession.selectOne("systemNotice.getSystemNoticeInfo", fetchParams);
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/TableCategoryValueService.java b/backend-spring/src/main/java/com/erp/service/TableCategoryValueService.java
index 60f2c91e..57ec87ff 100644
--- a/backend-spring/src/main/java/com/erp/service/TableCategoryValueService.java
+++ b/backend-spring/src/main/java/com/erp/service/TableCategoryValueService.java
@@ -20,13 +20,13 @@ public class TableCategoryValueService extends BaseService {
 
     public List<Map<String, Object>> getCategoryColumns(Map<String, Object> params) {
         log.info("카테고리 컬럼 목록 조회: tableName={}, companyCode={}",
-                params.get("tableName"), params.get("companyCode"));
-        return sqlSession.selectList(NS + "getCategoryColumnList", params);
+                params.get("table_name"), params.get("company_code"));
+        return sqlSession.selectList(NS + "get_category_column_list", params);
     }
 
     public List<Map<String, Object>> getAllCategoryColumns(Map<String, Object> params) {
-        log.info("전체 카테고리 컬럼 목록 조회: companyCode={}", params.get("companyCode"));
-        return sqlSession.selectList(NS + "getAllCategoryColumnList", params);
+        log.info("전체 카테고리 컬럼 목록 조회: companyCode={}", params.get("company_code"));
+        return sqlSession.selectList(NS + "get_all_category_column_list", params);
     }
 
     // ══════════════════════════════════════════════════════════════
@@ -35,9 +35,9 @@ public class TableCategoryValueService extends BaseService {
 
     public List<Map<String, Object>> getCategoryValues(Map<String, Object> params) {
         log.info("카테고리 값 목록 조회: tableName={}, columnName={}, companyCode={}",
-                params.get("tableName"), params.get("columnName"), params.get("companyCode"));
+                params.get("table_name"), params.get("column_name"), params.get("company_code"));
 
-        List<Map<String, Object>> flatList = sqlSession.selectList(NS + "getCategoryValueList", params);
+        List<Map<String, Object>> flatList = sqlSession.selectList(NS + "get_category_value_list", params);
         List<Map<String, Object>> hierarchy = buildHierarchy(flatList, null);
 
         log.info("카테고리 값 {}개 조회 완료 (평면)", flatList.size());
@@ -50,77 +50,77 @@ public class TableCategoryValueService extends BaseService {
 
     @Transactional
     public Map<String, Object> addCategoryValue(Map<String, Object> params) {
-        String tableName   = (String) params.get("tableName");
-        String columnName  = (String) params.get("columnName");
-        String valueCode   = (String) params.get("valueCode");
-        String valueLabel  = (String) params.get("valueLabel");
-        String companyCode = (String) params.get("companyCode");
+        String tableName   = (String) params.get("table_name");
+        String columnName  = (String) params.get("column_name");
+        String valueCode   = (String) params.get("value_code");
+        String valueLabel  = (String) params.get("value_label");
+        String companyCode = (String) params.get("company_code");
 
         log.info("카테고리 값 추가: tableName={}, columnName={}, valueCode={}, companyCode={}",
                 tableName, columnName, valueCode, companyCode);
 
-        Integer codeDup = sqlSession.selectOne(NS + "countDuplicateCode", params);
+        Integer codeDup = sqlSession.selectOne(NS + "count_duplicate_code", params);
         if (codeDup != null && codeDup > 0) {
             throw new IllegalArgumentException("이미 존재하는 코드입니다");
         }
 
-        Integer labelDup = sqlSession.selectOne(NS + "countDuplicateLabel", params);
+        Integer labelDup = sqlSession.selectOne(NS + "count_duplicate_label", params);
         if (labelDup != null && labelDup > 0) {
             throw new IllegalArgumentException(
                     "이미 동일한 이름의 카테고리 값이 존재합니다: \"" + valueLabel + "\"");
         }
 
-        if (params.get("valueOrder") == null) params.put("valueOrder",  0);
+        if (params.get("value_order") == null) params.put("value_order",  0);
         if (params.get("depth")      == null) params.put("depth",       1);
-        if (params.get("isActive")   == null) params.put("isActive",    true);
-        if (params.get("isDefault")  == null) params.put("isDefault",   false);
+        if (params.get("is_active")   == null) params.put("is_active",    true);
+        if (params.get("is_default")  == null) params.put("is_default",   false);
 
-        sqlSession.insert(NS + "insertCategoryValue", params);
-        long valueId = toLong(params.get("valueId"));
+        sqlSession.insert(NS + "insert_category_value", params);
+        long valueId = toLong(params.get("value_id"));
 
         log.info("카테고리 값 추가 완료: valueId={}", valueId);
 
         Map<String, Object> fetchP = new HashMap<>();
-        fetchP.put("valueId", valueId);
-        return sqlSession.selectOne(NS + "getCategoryValueInfo", fetchP);
+        fetchP.put("value_id", valueId);
+        return sqlSession.selectOne(NS + "get_category_value_info", fetchP);
     }
 
     @Transactional
     public Map<String, Object> updateCategoryValue(Map<String, Object> params) {
-        long   valueId    = toLong(params.get("valueId"));
-        String companyCode = (String) params.get("companyCode");
+        long   valueId    = toLong(params.get("value_id"));
+        String companyCode = (String) params.get("company_code");
 
         log.info("카테고리 값 수정: valueId={}, companyCode={}", valueId, companyCode);
 
-        if (params.get("valueLabel") != null) {
-            Map<String, Object> current = sqlSession.selectOne(NS + "getCategoryValueLabelInfo",
-                    Map.of("valueId", valueId));
+        if (params.get("value_label") != null) {
+            Map<String, Object> current = sqlSession.selectOne(NS + "get_category_value_label_info",
+                    Map.of("value_id", valueId));
             if (current != null) {
                 Map<String, Object> labelP = new HashMap<>();
-                labelP.put("tableName",   current.get("table_name"));
-                labelP.put("columnName",  current.get("column_name"));
-                labelP.put("companyCode", current.get("company_code"));
-                labelP.put("valueLabel",  params.get("valueLabel"));
-                labelP.put("valueId",     valueId);
-                Integer dup = sqlSession.selectOne(NS + "countDuplicateLabelExcludeSelf", labelP);
+                labelP.put("table_name",   current.get("table_name"));
+                labelP.put("column_name",  current.get("column_name"));
+                labelP.put("company_code", current.get("company_code"));
+                labelP.put("value_label",  params.get("value_label"));
+                labelP.put("value_id",     valueId);
+                Integer dup = sqlSession.selectOne(NS + "count_duplicate_label_exclude_self", labelP);
                 if (dup != null && dup > 0) {
                     throw new IllegalArgumentException(
                             "이미 동일한 이름의 카테고리 값이 존재합니다: \""
-                                    + params.get("valueLabel") + "\"");
+                                    + params.get("value_label") + "\"");
                 }
             }
         }
 
-        params.put("valueId", valueId);
-        Integer rows = sqlSession.selectOne(NS + "updateCategoryValue", params);
+        params.put("value_id", valueId);
+        Integer rows = sqlSession.selectOne(NS + "update_category_value", params);
         if (rows == null || rows == 0) {
             // update returns affected rows via selectOne workaround; use update method instead
-            sqlSession.update(NS + "updateCategoryValue", params);
+            sqlSession.update(NS + "update_category_value", params);
         }
 
         Map<String, Object> fetchP = new HashMap<>();
-        fetchP.put("valueId", valueId);
-        return sqlSession.selectOne(NS + "getCategoryValueInfo", fetchP);
+        fetchP.put("value_id", valueId);
+        return sqlSession.selectOne(NS + "get_category_value_info", fetchP);
     }
 
     // ══════════════════════════════════════════════════════════════
@@ -129,12 +129,12 @@ public class TableCategoryValueService extends BaseService {
 
     @Transactional
     public void deleteCategoryValue(Map<String, Object> params) {
-        long   valueId    = toLong(params.get("valueId"));
-        String companyCode = (String) params.get("companyCode");
+        long   valueId    = toLong(params.get("value_id"));
+        String companyCode = (String) params.get("company_code");
 
         log.info("카테고리 값 삭제: valueId={}, companyCode={}", valueId, companyCode);
 
-        List<Map<String, Object>> childRows = sqlSession.selectList(NS + "getChildValueIdList", params);
+        List<Map<String, Object>> childRows = sqlSession.selectList(NS + "get_child_value_id_list", params);
         List<Long> allIds = new ArrayList<>();
         allIds.add(valueId);
         childRows.forEach(r -> allIds.add(toLong(r.get("value_id"))));
@@ -149,9 +149,9 @@ public class TableCategoryValueService extends BaseService {
         Collections.reverse(reversed);
         for (Long id : reversed) {
             Map<String, Object> delP = new HashMap<>();
-            delP.put("valueId",     id);
-            delP.put("companyCode", companyCode);
-            sqlSession.delete(NS + "deleteValueById", delP);
+            delP.put("value_id",     id);
+            delP.put("company_code", companyCode);
+            sqlSession.delete(NS + "delete_value_by_id", delP);
         }
 
         log.info("카테고리 값 삭제 완료: totalDeleted={}", allIds.size());
@@ -160,23 +160,23 @@ public class TableCategoryValueService extends BaseService {
     @Transactional
     public void bulkDeleteCategoryValues(Map<String, Object> params) {
         log.info("카테고리 값 일괄 삭제: count={}, companyCode={}",
-                ((List<?>) params.get("valueIds")).size(), params.get("companyCode"));
-        sqlSession.update(NS + "bulkSoftDeleteValues", params);
+                ((List<?>) params.get("value_ids")).size(), params.get("company_code"));
+        sqlSession.update(NS + "bulk_soft_delete_values", params);
     }
 
     @Transactional
     public void reorderCategoryValues(Map<String, Object> params) {
-        List<?> rawIds = (List<?>) params.get("orderedValueIds");
-        String companyCode = (String) params.get("companyCode");
+        List<?> rawIds = (List<?>) params.get("ordered_value_ids");
+        String companyCode = (String) params.get("company_code");
 
         log.info("카테고리 값 순서 변경: count={}, companyCode={}", rawIds.size(), companyCode);
 
         for (int i = 0; i < rawIds.size(); i++) {
             Map<String, Object> p = new HashMap<>();
-            p.put("valueId",    toLong(rawIds.get(i)));
-            p.put("valueOrder", i + 1);
-            p.put("companyCode", companyCode);
-            sqlSession.update(NS + "updateValueOrder", p);
+            p.put("value_id",    toLong(rawIds.get(i)));
+            p.put("value_order", i + 1);
+            p.put("company_code", companyCode);
+            sqlSession.update(NS + "update_value_order", p);
         }
     }
 
@@ -186,9 +186,9 @@ public class TableCategoryValueService extends BaseService {
 
     public Map<String, Object> getColumnMapping(Map<String, Object> params) {
         log.info("컬럼 매핑 조회: tableName={}, menuObjid={}, companyCode={}",
-                params.get("tableName"), params.get("menuObjid"), params.get("companyCode"));
+                params.get("table_name"), params.get("menu_objid"), params.get("company_code"));
 
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getColumnMappingList", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_column_mapping_list", params);
 
         Map<String, Object> mapping = new LinkedHashMap<>();
         for (Map<String, Object> row : rows) {
@@ -201,21 +201,21 @@ public class TableCategoryValueService extends BaseService {
 
     @Transactional
     public Map<String, Object> createColumnMapping(Map<String, Object> params) {
-        String tableName          = (String) params.get("tableName");
-        String logicalColumnName  = (String) params.get("logicalColumnName");
-        String physicalColumnName = (String) params.get("physicalColumnName");
+        String tableName          = (String) params.get("table_name");
+        String logicalColumnName  = (String) params.get("logical_column_name");
+        String physicalColumnName = (String) params.get("physical_column_name");
 
         log.info("컬럼 매핑 생성: tableName={}, logical={}, physical={}, companyCode={}",
-                tableName, logicalColumnName, physicalColumnName, params.get("companyCode"));
+                tableName, logicalColumnName, physicalColumnName, params.get("company_code"));
 
-        Integer colExists = sqlSession.selectOne(NS + "checkPhysicalColumnExists", params);
+        Integer colExists = sqlSession.selectOne(NS + "check_physical_column_exists", params);
         if (colExists == null || colExists == 0) {
             throw new IllegalArgumentException(
                     "테이블 " + tableName + "에 컬럼 " + physicalColumnName + "이(가) 존재하지 않습니다");
         }
 
-        sqlSession.insert(NS + "upsertColumnMapping", params);
-        Map<String, Object> result = sqlSession.selectOne(NS + "getColumnMappingInfo", params);
+        sqlSession.insert(NS + "upsert_column_mapping", params);
+        Map<String, Object> result = sqlSession.selectOne(NS + "get_column_mapping_info", params);
 
         log.info("컬럼 매핑 생성 완료: mappingId={}", result != null ? result.get("mapping_id") : "?");
         return result;
@@ -223,24 +223,24 @@ public class TableCategoryValueService extends BaseService {
 
     public List<Map<String, Object>> getLogicalColumns(Map<String, Object> params) {
         log.info("논리적 컬럼 목록 조회: tableName={}, menuObjid={}, companyCode={}",
-                params.get("tableName"), params.get("menuObjid"), params.get("companyCode"));
-        return sqlSession.selectList(NS + "getLogicalColumnList", params);
+                params.get("table_name"), params.get("menu_objid"), params.get("company_code"));
+        return sqlSession.selectList(NS + "get_logical_column_list", params);
     }
 
     @Transactional
     public void deleteColumnMapping(Map<String, Object> params) {
-        int deleted = sqlSession.delete(NS + "deleteColumnMappingById", params);
+        int deleted = sqlSession.delete(NS + "delete_column_mapping_by_id", params);
         if (deleted == 0) {
             throw new IllegalArgumentException("컬럼 매핑을 찾을 수 없거나 권한이 없습니다");
         }
-        log.info("컬럼 매핑 삭제 완료: mappingId={}", params.get("mappingId"));
+        log.info("컬럼 매핑 삭제 완료: mappingId={}", params.get("mapping_id"));
     }
 
     @Transactional
     public int deleteColumnMappingsByColumn(Map<String, Object> params) {
-        int deleted = sqlSession.delete(NS + "deleteColumnMappingsByColumn", params);
+        int deleted = sqlSession.delete(NS + "delete_column_mappings_by_column", params);
         log.info("테이블+컬럼 기준 매핑 삭제 완료: tableName={}, columnName={}, deletedCount={}",
-                params.get("tableName"), params.get("columnName"), deleted);
+                params.get("table_name"), params.get("column_name"), deleted);
         return deleted;
     }
 
@@ -249,15 +249,15 @@ public class TableCategoryValueService extends BaseService {
     // ══════════════════════════════════════════════════════════════
 
     public Map<String, Object> getCategoryLabelsByCodes(Map<String, Object> params) {
-        Object rawCodes = params.get("valueCodes");
+        Object rawCodes = params.get("value_codes");
         if (!(rawCodes instanceof List) || ((List<?>) rawCodes).isEmpty()) {
             return new LinkedHashMap<>();
         }
 
         log.info("카테고리 코드로 라벨 조회: count={}, companyCode={}",
-                ((List<?>) rawCodes).size(), params.get("companyCode"));
+                ((List<?>) rawCodes).size(), params.get("company_code"));
 
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getLabelListByCodes", params);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_label_list_by_codes", params);
 
         Map<String, Object> labels = new LinkedHashMap<>();
         for (Map<String, Object> row : rows) {
@@ -275,13 +275,13 @@ public class TableCategoryValueService extends BaseService {
     // ══════════════════════════════════════════════════════════════
 
     public List<Map<String, Object>> getSecondLevelMenus(Map<String, Object> params) {
-        log.info("2레벨 메뉴 목록 조회: companyCode={}", params.get("companyCode"));
+        log.info("2레벨 메뉴 목록 조회: companyCode={}", params.get("company_code"));
 
-        Integer hasCC = sqlSession.selectOne(NS + "checkMenuInfoHasCompanyCode", null);
-        params.put("hasCompanyCode", hasCC != null && hasCC > 0);
+        Integer hasCC = sqlSession.selectOne(NS + "check_menu_info_has_company_code", null);
+        params.put("has_company_code", hasCC != null && hasCC > 0);
         log.info("menu_info.company_code 컬럼 존재 여부: {}", hasCC != null && hasCC > 0);
 
-        List<Map<String, Object>> menus = sqlSession.selectList(NS + "getSecondLevelMenuList", params);
+        List<Map<String, Object>> menus = sqlSession.selectList(NS + "get_second_level_menu_list", params);
         log.info("2레벨 메뉴 {}개 조회 완료", menus.size());
         return menus;
     }
@@ -292,10 +292,10 @@ public class TableCategoryValueService extends BaseService {
 
     private void checkNotInUse(long valueId, String companyCode) {
         Map<String, Object> p = new HashMap<>();
-        p.put("valueId",     valueId);
-        p.put("companyCode", companyCode);
+        p.put("value_id",     valueId);
+        p.put("company_code", companyCode);
 
-        Map<String, Object> valueInfo = sqlSession.selectOne(NS + "getCategoryValueUsageInfo", p);
+        Map<String, Object> valueInfo = sqlSession.selectOne(NS + "get_category_value_usage_info", p);
         if (valueInfo == null) {
             throw new IllegalArgumentException("카테고리 값을 찾을 수 없습니다");
         }
@@ -310,20 +310,20 @@ public class TableCategoryValueService extends BaseService {
 
         if (safeTable.isEmpty() || safeColumn.isEmpty()) return;
 
-        Integer tableExists = sqlSession.selectOne(NS + "checkTableExistsForUsage",
-                Map.of("tableName", safeTable));
+        Integer tableExists = sqlSession.selectOne(NS + "check_table_exists_for_usage",
+                Map.of("table_name", safeTable));
         if (tableExists == null || tableExists == 0) return;
 
         Map<String, Object> countP = new HashMap<>();
-        countP.put("safeTableName",  safeTable);
-        countP.put("safeColumnName", safeColumn);
-        countP.put("valueCode",      valueCode);
-        countP.put("companyCode",    companyCode);
-        Integer count = sqlSession.selectOne(NS + "countValueUsageInTable", countP);
+        countP.put("safe_table_name",  safeTable);
+        countP.put("safe_column_name", safeColumn);
+        countP.put("value_code",      valueCode);
+        countP.put("company_code",    companyCode);
+        Integer count = sqlSession.selectOne(NS + "count_value_usage_in_table", countP);
 
         if (count != null && count > 0) {
-            List<Map<String, Object>> menus = sqlSession.selectList(NS + "getMenuListUsingTable",
-                    Map.of("tableName", tableName, "companyCode", companyCode));
+            List<Map<String, Object>> menus = sqlSession.selectList(NS + "get_menu_list_using_table",
+                    Map.of("table_name", tableName, "company_code", companyCode));
 
             StringBuilder msg = new StringBuilder();
             msg.append("카테고리 \"").append(valueLabel).append("\"을(를) 삭제할 수 없습니다.\n");
diff --git a/backend-spring/src/main/java/com/erp/service/TableHistoryService.java b/backend-spring/src/main/java/com/erp/service/TableHistoryService.java
index 97348b94..189c07df 100644
--- a/backend-spring/src/main/java/com/erp/service/TableHistoryService.java
+++ b/backend-spring/src/main/java/com/erp/service/TableHistoryService.java
@@ -16,26 +16,26 @@ public class TableHistoryService extends BaseService {
     // ─── Public API ────────────────────────────────────────────────
 
     public Map<String, Object> checkHistoryTableExists(Map<String, Object> params) {
-        String tableName    = sanitizeTableName((String) params.get("tableName"));
+        String tableName    = sanitizeTableName((String) params.get("table_name"));
         String logTableName = tableName + "_log";
-        params.put("logTableName", logTableName);
+        params.put("log_table_name", logTableName);
 
-        Map<String, Object> row     = sqlSession.selectOne(NS + "checkHistoryTableExists", params);
+        Map<String, Object> row     = sqlSession.selectOne(NS + "check_history_table_exists", params);
         boolean             exists  = Boolean.TRUE.equals(row != null ? row.get("exists") : Boolean.FALSE);
         String              message = exists ? "이력 테이블이 존재합니다." : "이력 테이블이 존재하지 않습니다.";
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("tableName",       tableName);
-        result.put("logTableName",    logTableName);
+        result.put("table_name",       tableName);
+        result.put("log_table_name",    logTableName);
         result.put("exists",          exists);
-        result.put("historyEnabled",  exists);
+        result.put("history_enabled",  exists);
         result.put("_message",        message);
         return result;
     }
 
     public List<Map<String, Object>> getTableHistorySummary(Map<String, Object> params) {
         prepareLogTableName(params);
-        return withTableNotFound(() -> sqlSession.selectList(NS + "selectTableHistorySummary", params));
+        return withTableNotFound(() -> sqlSession.selectList(NS + "select_table_history_summary", params));
     }
 
     public Map<String, Object> getAllTableHistory(Map<String, Object> params) {
@@ -46,8 +46,8 @@ public class TableHistoryService extends BaseService {
         int limit  = (int) params.get("limit");
         int offset = (int) params.get("offset");
 
-        List<Map<String, Object>> records = withTableNotFound(() -> sqlSession.selectList(NS + "selectAllTableHistory", params));
-        Integer totalObj = withTableNotFound(() -> sqlSession.selectOne(NS + "countAllTableHistory", params));
+        List<Map<String, Object>> records = withTableNotFound(() -> sqlSession.selectList(NS + "select_all_table_history", params));
+        Integer totalObj = withTableNotFound(() -> sqlSession.selectOne(NS + "count_all_table_history", params));
         int total = totalObj != null ? totalObj : 0;
 
         return buildPaginatedResult(records, total, limit, offset, (offset + limit) < total);
@@ -61,8 +61,8 @@ public class TableHistoryService extends BaseService {
         int limit  = (int) params.get("limit");
         int offset = (int) params.get("offset");
 
-        List<Map<String, Object>> records = withTableNotFound(() -> sqlSession.selectList(NS + "selectRecordHistory", params));
-        Integer totalObj = withTableNotFound(() -> sqlSession.selectOne(NS + "countRecordHistory", params));
+        List<Map<String, Object>> records = withTableNotFound(() -> sqlSession.selectList(NS + "select_record_history", params));
+        Integer totalObj = withTableNotFound(() -> sqlSession.selectOne(NS + "count_record_history", params));
         int total = totalObj != null ? totalObj : 0;
 
         return buildPaginatedResult(records, total, limit, offset, (offset + records.size()) < total);
@@ -70,21 +70,21 @@ public class TableHistoryService extends BaseService {
 
     public List<Map<String, Object>> getRecordTimeline(Map<String, Object> params) {
         prepareLogTableName(params);
-        return withTableNotFound(() -> sqlSession.selectList(NS + "selectRecordTimeline", params));
+        return withTableNotFound(() -> sqlSession.selectList(NS + "select_record_timeline", params));
     }
 
     // ─── Private helpers ───────────────────────────────────────────
 
     private void prepareLogTableName(Map<String, Object> params) {
-        String tableName = sanitizeTableName((String) params.get("tableName"));
-        params.put("tableName",    tableName);
-        params.put("logTableName", tableName + "_log");
+        String tableName = sanitizeTableName((String) params.get("table_name"));
+        params.put("table_name",    tableName);
+        params.put("log_table_name", tableName + "_log");
     }
 
     private void prepareFilterParams(Map<String, Object> params) {
-        Object changedBy = params.get("changedBy");
+        Object changedBy = params.get("changed_by");
         if (changedBy != null && !changedBy.toString().isBlank()) {
-            params.put("changedByLike", "%" + changedBy + "%");
+            params.put("changed_by_like", "%" + changedBy + "%");
         }
     }
 
@@ -99,7 +99,7 @@ public class TableHistoryService extends BaseService {
         pagination.put("total",   total);
         pagination.put("limit",   limit);
         pagination.put("offset",  offset);
-        pagination.put("hasMore", hasMore);
+        pagination.put("has_more", hasMore);
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("records",    records);
diff --git a/backend-spring/src/main/java/com/erp/service/TableManagementService.java b/backend-spring/src/main/java/com/erp/service/TableManagementService.java
index fcd29d4d..06cf4845 100644
--- a/backend-spring/src/main/java/com/erp/service/TableManagementService.java
+++ b/backend-spring/src/main/java/com/erp/service/TableManagementService.java
@@ -31,12 +31,12 @@ public class TableManagementService extends BaseService {
     // ──────────────────────────────────────────────────
 
     public List<Map<String, Object>> getTableList() {
-        List<Map<String, Object>> tables = sqlSession.selectList(NS + "getTableList");
+        List<Map<String, Object>> tables = sqlSession.selectList(NS + "get_table_list");
         // columnCount Long → Integer 변환 (Node 호환)
         for (Map<String, Object> t : tables) {
-            Object cnt = t.get("columnCount");
+            Object cnt = t.get("column_count");
             if (cnt instanceof Number) {
-                t.put("columnCount", ((Number) cnt).intValue());
+                t.put("column_count", ((Number) cnt).intValue());
             }
         }
         return tables;
@@ -48,19 +48,19 @@ public class TableManagementService extends BaseService {
 
     public Map<String, Object> getColumnList(String tableName, int page, int size, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
+        params.put("table_name", tableName);
         params.put("size", size);
         params.put("offset", (long) (page - 1) * size);
 
-        Integer totalObj = sqlSession.selectOne(NS + "getColumnListCnt", params);
+        Integer totalObj = sqlSession.selectOne(NS + "get_column_list_cnt", params);
         int total = totalObj != null ? totalObj : 0;
         List<Map<String, Object>> columns;
 
         if (companyCode != null && !companyCode.isBlank()) {
-            params.put("companyCode", companyCode);
-            columns = sqlSession.selectList(NS + "getColumnListWithCompany", params);
+            params.put("company_code", companyCode);
+            columns = sqlSession.selectList(NS + "get_column_list_with_company", params);
         } else {
-            columns = sqlSession.selectList(NS + "getColumnList", params);
+            columns = sqlSession.selectList(NS + "get_column_list", params);
         }
 
         int totalPages = total == 0 ? 1 : (int) Math.ceil((double) total / size);
@@ -69,7 +69,7 @@ public class TableManagementService extends BaseService {
         result.put("total", total);
         result.put("page", page);
         result.put("size", size);
-        result.put("totalPages", totalPages);
+        result.put("total_pages", totalPages);
         return result;
     }
 
@@ -79,23 +79,23 @@ public class TableManagementService extends BaseService {
 
     public List<Map<String, Object>> getTableSchema(String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        return sqlSession.selectList(NS + "getTableSchemaList", params);
+        params.put("table_name", tableName);
+        return sqlSession.selectList(NS + "get_table_schema_list", params);
     }
 
     public boolean checkTableExists(String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        Map<String, Object> result = sqlSession.selectOne(NS + "checkTableExists", params);
+        params.put("table_name", tableName);
+        Map<String, Object> result = sqlSession.selectOne(NS + "check_table_exists", params);
         Object exists = result != null ? result.get("exists") : null;
         return Boolean.TRUE.equals(exists);
     }
 
     public boolean hasColumn(String tableName, String columnName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", sanitize(tableName));
-        params.put("columnName", sanitize(columnName));
-        Integer cntObj = sqlSession.selectOne(NS + "checkTableHasColumn", params);
+        params.put("table_name", sanitize(tableName));
+        params.put("column_name", sanitize(columnName));
+        Integer cntObj = sqlSession.selectOne(NS + "check_table_has_column", params);
         return cntObj != null && cntObj > 0;
     }
 
@@ -105,24 +105,24 @@ public class TableManagementService extends BaseService {
 
     public Map<String, Object> getTableLabels(String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        return sqlSession.selectOne(NS + "getTableLabelInfo", params);
+        params.put("table_name", tableName);
+        return sqlSession.selectOne(NS + "get_table_label_info", params);
     }
 
     @Transactional
     public void updateTableLabel(String tableName, String displayName, String description) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("displayName", displayName);
+        params.put("table_name", tableName);
+        params.put("display_name", displayName);
         params.put("description", description != null ? description : "");
-        sqlSession.update(NS + "upsertTableLabel", params);
+        sqlSession.update(NS + "upsert_table_label", params);
         log.info("테이블 라벨 업데이트: {}", tableName);
     }
 
     private void ensureTableInLabels(String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        sqlSession.insert(NS + "insertTableLabelIfNotExists", params);
+        params.put("table_name", tableName);
+        sqlSession.insert(NS + "insert_table_label_if_not_exists", params);
     }
 
     // ──────────────────────────────────────────────────
@@ -131,9 +131,9 @@ public class TableManagementService extends BaseService {
 
     public Map<String, Object> getColumnLabels(String tableName, String columnName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("columnName", columnName);
-        return sqlSession.selectOne(NS + "getColumnLabelInfo", params);
+        params.put("table_name", tableName);
+        params.put("column_name", columnName);
+        return sqlSession.selectOne(NS + "get_column_label_info", params);
     }
 
     // ──────────────────────────────────────────────────
@@ -145,23 +145,23 @@ public class TableManagementService extends BaseService {
                                      Map<String, Object> settings, String companyCode) {
         ensureTableInLabels(tableName);
 
-        String inputType = normalizeInputType((String) settings.get("inputType"));
+        String inputType = normalizeInputType((String) settings.get("input_type"));
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("columnName", columnName);
-        params.put("columnLabel", settings.get("columnLabel"));
-        params.put("inputType", inputType);
-        params.put("detailSettings", toJsonString(settings.get("detailSettings")));
-        params.put("codeCategory", "code".equals(inputType) ? settings.get("codeCategory") : null);
-        params.put("codeValue", "code".equals(inputType) ? settings.get("codeValue") : null);
-        params.put("referenceTable", "entity".equals(inputType) ? settings.get("referenceTable") : null);
-        params.put("referenceColumn", "entity".equals(inputType) ? settings.get("referenceColumn") : null);
-        params.put("displayColumn", "entity".equals(inputType) ? settings.get("displayColumn") : null);
-        params.put("displayOrder", settings.getOrDefault("displayOrder", 0));
-        params.put("isVisible", settings.getOrDefault("isVisible", true));
-        params.put("companyCode", companyCode);
-        params.put("categoryRef", "category".equals(inputType) ? settings.get("categoryRef") : null);
-        sqlSession.update(NS + "upsertColumnSettings", params);
+        params.put("table_name", tableName);
+        params.put("column_name", columnName);
+        params.put("column_label", settings.get("column_label"));
+        params.put("input_type", inputType);
+        params.put("detail_settings", toJsonString(settings.get("detail_settings")));
+        params.put("code_category", "code".equals(inputType) ? settings.get("code_category") : null);
+        params.put("code_value", "code".equals(inputType) ? settings.get("code_value") : null);
+        params.put("reference_table", "entity".equals(inputType) ? settings.get("reference_table") : null);
+        params.put("reference_column", "entity".equals(inputType) ? settings.get("reference_column") : null);
+        params.put("display_column", "entity".equals(inputType) ? settings.get("display_column") : null);
+        params.put("display_order", settings.getOrDefault("display_order", 0));
+        params.put("is_visible", settings.getOrDefault("is_visible", true));
+        params.put("company_code", companyCode);
+        params.put("category_ref", "category".equals(inputType) ? settings.get("category_ref") : null);
+        sqlSession.update(NS + "upsert_column_settings", params);
 
         // 화면 레이아웃 동기화
         syncScreenLayouts(tableName, columnName, inputType, companyCode);
@@ -173,7 +173,7 @@ public class TableManagementService extends BaseService {
                                         String companyCode) {
         ensureTableInLabels(tableName);
         for (Map<String, Object> colSetting : columnSettings) {
-            Object colName = colSetting.get("columnName");
+            Object colName = colSetting.get("column_name");
             if (colName != null && !colName.toString().isBlank()) {
                 updateColumnSettings(tableName, colName.toString(), colSetting, companyCode);
             }
@@ -186,15 +186,15 @@ public class TableManagementService extends BaseService {
                                     String webType, Map<String, Object> detailSettings) {
         String finalType = normalizeInputType(webType);
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("columnName", columnName);
-        params.put("inputType", finalType);
-        params.put("detailSettings", detailSettings != null ? toJsonString(detailSettings) : "{}");
-        params.put("companyCode", "*");
-        params.put("clearEntity", false);
-        params.put("clearCode", false);
-        params.put("clearCategory", false);
-        sqlSession.update(NS + "upsertColumnInputType", params);
+        params.put("table_name", tableName);
+        params.put("column_name", columnName);
+        params.put("input_type", finalType);
+        params.put("detail_settings", detailSettings != null ? toJsonString(detailSettings) : "{}");
+        params.put("company_code", "*");
+        params.put("clear_entity", false);
+        params.put("clear_code", false);
+        params.put("clear_category", false);
+        sqlSession.update(NS + "upsert_column_input_type", params);
         log.info("컬럼 웹타입 설정: {}.{} = {}", tableName, columnName, finalType);
     }
 
@@ -204,24 +204,24 @@ public class TableManagementService extends BaseService {
                                       Map<String, Object> detailSettings) {
         String finalType = normalizeInputType(inputType);
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("columnName", columnName);
-        params.put("inputType", finalType);
-        params.put("detailSettings", detailSettings != null ? toJsonString(detailSettings) : "{}");
-        params.put("companyCode", companyCode);
-        params.put("clearEntity", !"entity".equals(finalType));
-        params.put("clearCode", !"code".equals(finalType));
-        params.put("clearCategory", !"category".equals(finalType));
-        sqlSession.update(NS + "upsertColumnInputType", params);
+        params.put("table_name", tableName);
+        params.put("column_name", columnName);
+        params.put("input_type", finalType);
+        params.put("detail_settings", detailSettings != null ? toJsonString(detailSettings) : "{}");
+        params.put("company_code", companyCode);
+        params.put("clear_entity", !"entity".equals(finalType));
+        params.put("clear_code", !"code".equals(finalType));
+        params.put("clear_category", !"category".equals(finalType));
+        sqlSession.update(NS + "upsert_column_input_type", params);
         syncScreenLayouts(tableName, columnName, finalType, companyCode);
         log.info("컬럼 입력타입 설정: {}.{} = {}, company={}", tableName, columnName, finalType, companyCode);
     }
 
     public List<Map<String, Object>> getColumnInputTypes(String tableName, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("companyCode", companyCode);
-        return sqlSession.selectList(NS + "getColumnInputTypeList", params);
+        params.put("table_name", tableName);
+        params.put("company_code", companyCode);
+        return sqlSession.selectList(NS + "get_column_input_type_list", params);
     }
 
     // ──────────────────────────────────────────────────
@@ -230,9 +230,9 @@ public class TableManagementService extends BaseService {
 
     public Map<String, Object> getTableConstraints(String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
+        params.put("table_name", tableName);
 
-        List<Map<String, Object>> pkResult = sqlSession.selectList(NS + "getTablePrimaryKeyList", params);
+        List<Map<String, Object>> pkResult = sqlSession.selectList(NS + "get_table_primary_key_list", params);
         Map<String, Object> primaryKey = new HashMap<>();
         if (!pkResult.isEmpty()) {
             Map<String, Object> pk = pkResult.get(0);
@@ -243,17 +243,17 @@ public class TableManagementService extends BaseService {
             primaryKey.put("columns", List.of());
         }
 
-        List<Map<String, Object>> indexResult = sqlSession.selectList(NS + "getTableIndexList", params);
+        List<Map<String, Object>> indexResult = sqlSession.selectList(NS + "get_table_index_list", params);
         List<Map<String, Object>> indexes = indexResult.stream().map(row -> {
             Map<String, Object> idx = new HashMap<>();
             idx.put("name", row.get("index_name"));
             idx.put("columns", parseColumnArray(row.get("columns")));
-            idx.put("isUnique", row.get("is_unique"));
+            idx.put("is_unique", row.get("is_unique"));
             return idx;
         }).collect(Collectors.toList());
 
         Map<String, Object> result = new HashMap<>();
-        result.put("primaryKey", primaryKey);
+        result.put("primary_key", primaryKey);
         result.put("indexes", indexes);
         return result;
     }
@@ -263,8 +263,8 @@ public class TableManagementService extends BaseService {
         String safeTable = sanitize(tableName);
         // 기존 PK 삭제
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", safeTable);
-        List<Map<String, Object>> existingPk = sqlSession.selectList(NS + "getTablePrimaryKeyList", params);
+        params.put("table_name", safeTable);
+        List<Map<String, Object>> existingPk = sqlSession.selectList(NS + "get_table_primary_key_list", params);
         if (!existingPk.isEmpty()) {
             String constraintName = (String) existingPk.get(0).get("constraint_name");
             jdbcTemplate.execute(
@@ -311,11 +311,11 @@ public class TableManagementService extends BaseService {
     public void toggleColumnNullable(String tableName, String columnName,
                                      boolean nullable, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("columnName", columnName);
-        params.put("isNullable", nullable ? "Y" : "N");
-        params.put("companyCode", companyCode);
-        sqlSession.update(NS + "upsertNullable", params);
+        params.put("table_name", tableName);
+        params.put("column_name", columnName);
+        params.put("is_nullable", nullable ? "Y" : "N");
+        params.put("company_code", companyCode);
+        sqlSession.update(NS + "upsert_nullable", params);
         log.info("NOT NULL 토글: {}.{} nullable={}, company={}", tableName, columnName, nullable, companyCode);
     }
 
@@ -323,11 +323,11 @@ public class TableManagementService extends BaseService {
     public void toggleColumnUnique(String tableName, String columnName,
                                    boolean unique, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("columnName", columnName);
-        params.put("isUnique", unique ? "Y" : "N");
-        params.put("companyCode", companyCode);
-        sqlSession.update(NS + "upsertUnique", params);
+        params.put("table_name", tableName);
+        params.put("column_name", columnName);
+        params.put("is_unique", unique ? "Y" : "N");
+        params.put("company_code", companyCode);
+        sqlSession.update(NS + "upsert_unique", params);
         log.info("UNIQUE 토글: {}.{} unique={}, company={}", tableName, columnName, unique, companyCode);
     }
 
@@ -339,9 +339,9 @@ public class TableManagementService extends BaseService {
                                                     Map<String, Object> data,
                                                     String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("companyCode", companyCode);
-        List<Map<String, Object>> notNullCols = sqlSession.selectList(NS + "getNotNullColumnList", params);
+        params.put("table_name", tableName);
+        params.put("company_code", companyCode);
+        List<Map<String, Object>> notNullCols = sqlSession.selectList(NS + "get_not_null_column_list", params);
 
         List<String> violations = new ArrayList<>();
         for (Map<String, Object> col : notNullCols) {
@@ -359,9 +359,9 @@ public class TableManagementService extends BaseService {
                                                    String companyCode,
                                                    String excludeId) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("companyCode", companyCode);
-        List<Map<String, Object>> uniqueCols = sqlSession.selectList(NS + "getUniqueColumnList", params);
+        params.put("table_name", tableName);
+        params.put("company_code", companyCode);
+        List<Map<String, Object>> uniqueCols = sqlSession.selectList(NS + "get_unique_column_list", params);
 
         String safeTable = sanitize(tableName);
         List<String> violations = new ArrayList<>();
@@ -411,8 +411,8 @@ public class TableManagementService extends BaseService {
         int offset = (page - 1) * size;
         @SuppressWarnings("unchecked")
         Map<String, Object> search = (Map<String, Object>) options.getOrDefault("search", Map.of());
-        String sortBy = (String) options.get("sortBy");
-        String sortOrder = "desc".equalsIgnoreCase((String) options.get("sortOrder")) ? "DESC" : "ASC";
+        String sortBy = (String) options.get("sort_by");
+        String sortOrder = "desc".equalsIgnoreCase((String) options.get("sort_order")) ? "DESC" : "ASC";
 
         List<String> conditions = new ArrayList<>();
         List<Object> values = new ArrayList<>();
@@ -451,7 +451,7 @@ public class TableManagementService extends BaseService {
         result.put("total", total);
         result.put("page", page);
         result.put("size", size);
-        result.put("totalPages", totalPages);
+        result.put("total_pages", totalPages);
         return result;
     }
 
@@ -497,8 +497,8 @@ public class TableManagementService extends BaseService {
 
         log.info("테이블 데이터 추가: {}, id={}", safeTable, insertedId);
         Map<String, Object> result = new HashMap<>();
-        result.put("insertedId", insertedId);
-        result.put("savedColumns", existingCols);
+        result.put("inserted_id", insertedId);
+        result.put("saved_columns", existingCols);
         return result;
     }
 
@@ -632,24 +632,24 @@ public class TableManagementService extends BaseService {
 
         // log_tables 설정 저장
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("isActive", isActive);
-        params.put("logColumns", String.join(",", targetCols));
-        sqlSession.update(NS + "upsertLogConfig", params);
+        params.put("table_name", tableName);
+        params.put("is_active", isActive);
+        params.put("log_columns", String.join(",", targetCols));
+        sqlSession.update(NS + "upsert_log_config", params);
 
         log.info("로그 테이블 생성: {}", safeLog);
     }
 
     public Map<String, Object> getLogConfig(String tableName) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        return sqlSession.selectOne(NS + "getLogConfigInfo", params);
+        params.put("table_name", tableName);
+        return sqlSession.selectOne(NS + "get_log_config_info", params);
     }
 
     public Map<String, Object> getLogData(String tableName, int page, int size) {
         String logTableName = sanitize(tableName) + "_log";
         if (!checkTableExists(logTableName)) {
-            return Map.of("data", List.of(), "total", 0, "page", page, "size", size, "totalPages", 0);
+            return Map.of("data", List.of(), "total", 0, "page", page, "size", size, "total_pages", 0);
         }
         int offset = (page - 1) * size;
         String countSql = String.format("SELECT COUNT(*) FROM \"%s\"", logTableName);
@@ -667,17 +667,17 @@ public class TableManagementService extends BaseService {
         result.put("total", total);
         result.put("page", page);
         result.put("size", size);
-        result.put("totalPages", totalPages);
+        result.put("total_pages", totalPages);
         return result;
     }
 
     @Transactional
     public void toggleLogTable(String tableName, boolean isActive) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("isActive", isActive);
-        params.put("logColumns", "");
-        sqlSession.update(NS + "upsertLogConfig", params);
+        params.put("table_name", tableName);
+        params.put("is_active", isActive);
+        params.put("log_columns", "");
+        sqlSession.update(NS + "upsert_log_config", params);
         log.info("로그 테이블 토글: {} → {}", tableName, isActive);
     }
 
@@ -687,7 +687,7 @@ public class TableManagementService extends BaseService {
 
     public Map<String, Object> checkDatabaseConnection() {
         try {
-            sqlSession.selectOne(NS + "checkDatabaseConnection", null);
+            sqlSession.selectOne(NS + "check_database_connection", null);
             return Map.of("connected", true, "message", "데이터베이스 연결 정상");
         } catch (Exception e) {
             log.error("DB 연결 실패", e);
@@ -701,21 +701,21 @@ public class TableManagementService extends BaseService {
 
     public List<Map<String, Object>> getCategoryColumnsByCompany(String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        return sqlSession.selectList(NS + "getCategoryColumnListByCompany", params);
+        params.put("company_code", companyCode);
+        return sqlSession.selectList(NS + "get_category_column_list_by_company", params);
     }
 
     public List<Map<String, Object>> getNumberingColumnsByCompany(String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        return sqlSession.selectList(NS + "getNumberingColumnListByCompany", params);
+        params.put("company_code", companyCode);
+        return sqlSession.selectList(NS + "get_numbering_column_list_by_company", params);
     }
 
     public List<Map<String, Object>> getCategoryColumnsByMenu(String companyCode, Object menuObjid) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        params.put("menuObjid", menuObjid);
-        return sqlSession.selectList(NS + "getCategoryColumnListByMenu", params);
+        params.put("company_code", companyCode);
+        params.put("menu_objid", menuObjid);
+        return sqlSession.selectList(NS + "get_category_column_list_by_menu", params);
     }
 
     // ──────────────────────────────────────────────────
@@ -725,22 +725,22 @@ public class TableManagementService extends BaseService {
     public Map<String, Object> getTableEntityRelations(String leftTable, String rightTable,
                                                         String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("leftTable", leftTable);
-        params.put("rightTable", rightTable);
-        params.put("companyCode", companyCode);
-        List<Map<String, Object>> relations = sqlSession.selectList(NS + "getEntityRelationList", params);
+        params.put("left_table", leftTable);
+        params.put("right_table", rightTable);
+        params.put("company_code", companyCode);
+        List<Map<String, Object>> relations = sqlSession.selectList(NS + "get_entity_relation_list", params);
         Map<String, Object> result = new HashMap<>();
-        result.put("leftTable", leftTable);
-        result.put("rightTable", rightTable);
+        result.put("left_table", leftTable);
+        result.put("right_table", rightTable);
         result.put("relations", relations);
         return result;
     }
 
     public List<Map<String, Object>> getReferencedByTables(String tableName, String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("tableName", tableName);
-        params.put("companyCode", companyCode);
-        return sqlSession.selectList(NS + "getReferencedByTableList", params);
+        params.put("table_name", tableName);
+        params.put("company_code", companyCode);
+        return sqlSession.selectList(NS + "get_referenced_by_table_list", params);
     }
 
     // ──────────────────────────────────────────────────
@@ -750,10 +750,10 @@ public class TableManagementService extends BaseService {
     @Transactional
     public Map<String, Object> multiTableSave(Map<String, Object> payload, String companyCode) {
         @SuppressWarnings("unchecked")
-        Map<String, Object> mainData = (Map<String, Object>) payload.get("mainData");
-        String mainTable = (String) payload.get("mainTable");
+        Map<String, Object> mainData = (Map<String, Object>) payload.get("main_data");
+        String mainTable = (String) payload.get("main_table");
         @SuppressWarnings("unchecked")
-        List<Map<String, Object>> subTables = (List<Map<String, Object>>) payload.get("subTables");
+        List<Map<String, Object>> subTables = (List<Map<String, Object>>) payload.get("sub_tables");
 
         if (mainTable == null || mainData == null) {
             throw new IllegalArgumentException("mainTable과 mainData가 필요합니다.");
@@ -765,15 +765,15 @@ public class TableManagementService extends BaseService {
         }
 
         Map<String, Object> mainResult = addTableData(mainTable, mainData);
-        String mainId = (String) mainResult.get("insertedId");
+        String mainId = (String) mainResult.get("inserted_id");
 
         List<Map<String, Object>> subResults = new ArrayList<>();
         if (subTables != null) {
             for (Map<String, Object> subTable : subTables) {
-                String subTableName = (String) subTable.get("tableName");
+                String subTableName = (String) subTable.get("table_name");
                 @SuppressWarnings("unchecked")
                 List<Map<String, Object>> rows = (List<Map<String, Object>>) subTable.get("rows");
-                String fkColumn = (String) subTable.get("fkColumn");
+                String fkColumn = (String) subTable.get("fk_column");
 
                 if (subTableName == null || rows == null) continue;
                 for (Map<String, Object> row : rows) {
@@ -784,15 +784,15 @@ public class TableManagementService extends BaseService {
                     addTableData(subTableName, row);
                 }
                 Map<String, Object> subResult = new HashMap<>();
-                subResult.put("tableName", subTableName);
-                subResult.put("rowCount", rows.size());
+                subResult.put("table_name", subTableName);
+                subResult.put("row_count", rows.size());
                 subResults.add(subResult);
             }
         }
 
         Map<String, Object> result = new HashMap<>();
-        result.put("mainId", mainId);
-        result.put("subResults", subResults);
+        result.put("main_id", mainId);
+        result.put("sub_results", subResults);
         log.info("다중 테이블 저장 완료: mainTable={}, mainId={}", mainTable, mainId);
         return result;
     }
@@ -818,7 +818,7 @@ public class TableManagementService extends BaseService {
         Map<String, Object> result = new HashMap<>();
         result.put("valid", errors.isEmpty());
         result.put("errors", errors);
-        result.put("totalRows", rows.size());
+        result.put("total_rows", rows.size());
         return result;
     }
 
@@ -895,12 +895,12 @@ public class TableManagementService extends BaseService {
                                     String inputType, String companyCode) {
         try {
             Map<String, Object> p = new HashMap<>();
-            p.put("tableName", tableName);
-            p.put("columnName", columnName);
-            p.put("inputType", inputType);
-            p.put("companyCode", companyCode);
-            p.put("componentId", mapInputTypeToComponentId(inputType));
-            sqlSession.update(NS + "syncScreenLayoutsInputType", p);
+            p.put("table_name", tableName);
+            p.put("column_name", columnName);
+            p.put("input_type", inputType);
+            p.put("company_code", companyCode);
+            p.put("component_id", mapInputTypeToComponentId(inputType));
+            sqlSession.update(NS + "sync_screen_layouts_input_type", p);
         } catch (Exception e) {
             log.warn("화면 레이아웃 동기화 실패 (무시됨): {}.{}", tableName, columnName);
         }
diff --git a/backend-spring/src/main/java/com/erp/service/TaxInvoiceService.java b/backend-spring/src/main/java/com/erp/service/TaxInvoiceService.java
index 6795128b..d854f44c 100644
--- a/backend-spring/src/main/java/com/erp/service/TaxInvoiceService.java
+++ b/backend-spring/src/main/java/com/erp/service/TaxInvoiceService.java
@@ -25,16 +25,16 @@ public class TaxInvoiceService extends BaseService {
     public Map<String, Object> getTaxInvoiceList(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         commonService.applyPagination(params);
-        int totalCount = sqlSession.selectOne(NS + "getTaxInvoiceListCnt", params);
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getTaxInvoiceList", params);
+        int totalCount = sqlSession.selectOne(NS + "get_tax_invoice_list_cnt", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_tax_invoice_list", params);
         return commonService.buildListResponse(list, totalCount, params);
     }
 
     public Map<String, Object> getTaxInvoiceInfo(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> invoice = sqlSession.selectOne(NS + "getTaxInvoiceInfo", params);
+        Map<String, Object> invoice = sqlSession.selectOne(NS + "get_tax_invoice_info", params);
         if (invoice == null) return null;
-        List<Map<String, Object>> items = sqlSession.selectList(NS + "getTaxInvoiceItems", params);
+        List<Map<String, Object>> items = sqlSession.selectList(NS + "get_tax_invoice_items", params);
         Map<String, Object> result = new HashMap<>();
         result.put("invoice", invoice);
         result.put("items", items);
@@ -46,9 +46,9 @@ public class TaxInvoiceService extends BaseService {
         String yearMonth = String.format("%04d%02d", now.getYear(), now.getMonthValue());
         String prefix = yearMonth + "-";
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         params.put("prefix", prefix + "%");
-        String lastNum = sqlSession.selectOne(NS + "getLastInvoiceNumber", params);
+        String lastNum = sqlSession.selectOne(NS + "get_last_invoice_number", params);
         int nextNum = 1;
         if (lastNum != null && !lastNum.isEmpty()) {
             String[] parts = lastNum.split("-");
@@ -69,21 +69,21 @@ public class TaxInvoiceService extends BaseService {
         params.put("supply_amount", DecimalUtils.toBigDecimal(params.get("supply_amount")));
         params.put("tax_amount", DecimalUtils.toBigDecimal(params.get("tax_amount")));
         params.put("total_amount", DecimalUtils.toBigDecimal(params.get("total_amount")));
-        String invoiceNumber = generateInvoiceNumber((String) params.get("companyCode"));
-        params.put("invoiceNumber", invoiceNumber);
-        sqlSession.insert(NS + "insertTaxInvoice", params);
+        String invoiceNumber = generateInvoiceNumber((String) params.get("company_code"));
+        params.put("invoice_number", invoiceNumber);
+        sqlSession.insert(NS + "insert_tax_invoice", params);
         Object itemsObj = params.get("items");
         if (itemsObj instanceof List<?> itemsList) {
             for (int i = 0; i < itemsList.size(); i++) {
                 @SuppressWarnings("unchecked")
                 Map<String, Object> item = (Map<String, Object>) itemsList.get(i);
-                item.put("taxInvoiceId", params.get("id"));
-                item.put("companyCode", params.get("companyCode"));
-                item.put("itemSeq", i + 1);
+                item.put("tax_invoice_id", params.get("id"));
+                item.put("company_code", params.get("company_code"));
+                item.put("item_seq", i + 1);
                 item.put("supply_amount", DecimalUtils.toBigDecimal(item.get("supply_amount")));
                 item.put("tax_amount", DecimalUtils.toBigDecimal(item.get("tax_amount")));
                 item.put("unit_price", DecimalUtils.toBigDecimal(item.get("unit_price")));
-                sqlSession.insert(NS + "insertTaxInvoiceItem", item);
+                sqlSession.insert(NS + "insert_tax_invoice_item", item);
             }
         }
         return params;
@@ -92,7 +92,7 @@ public class TaxInvoiceService extends BaseService {
     @Transactional
     public Map<String, Object> updateTaxInvoice(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> existing = sqlSession.selectOne(NS + "getTaxInvoiceInfo", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "get_tax_invoice_info", params);
         if (existing == null) {
             throw new RuntimeException("세금계산서를 찾을 수 없습니다.");
         }
@@ -102,21 +102,21 @@ public class TaxInvoiceService extends BaseService {
         if (params.get("supply_amount") != null) params.put("supply_amount", DecimalUtils.toBigDecimal(params.get("supply_amount")));
         if (params.get("tax_amount") != null) params.put("tax_amount", DecimalUtils.toBigDecimal(params.get("tax_amount")));
         if (params.get("total_amount") != null) params.put("total_amount", DecimalUtils.toBigDecimal(params.get("total_amount")));
-        sqlSession.update(NS + "updateTaxInvoice", params);
+        sqlSession.update(NS + "update_tax_invoice", params);
         Object itemsObj = params.get("items");
         if (itemsObj != null) {
-            sqlSession.delete(NS + "deleteTaxInvoiceItemsByInvoiceId", params);
+            sqlSession.delete(NS + "delete_tax_invoice_items_by_invoice_id", params);
             if (itemsObj instanceof List<?> itemsList) {
                 for (int i = 0; i < itemsList.size(); i++) {
                     @SuppressWarnings("unchecked")
                     Map<String, Object> item = (Map<String, Object>) itemsList.get(i);
-                    item.put("taxInvoiceId", params.get("id"));
-                    item.put("companyCode", params.get("companyCode"));
-                    item.put("itemSeq", i + 1);
+                    item.put("tax_invoice_id", params.get("id"));
+                    item.put("company_code", params.get("company_code"));
+                    item.put("item_seq", i + 1);
                     item.put("supply_amount", DecimalUtils.toBigDecimal(item.get("supply_amount")));
                     item.put("tax_amount", DecimalUtils.toBigDecimal(item.get("tax_amount")));
                     item.put("unit_price", DecimalUtils.toBigDecimal(item.get("unit_price")));
-                    sqlSession.insert(NS + "insertTaxInvoiceItem", item);
+                    sqlSession.insert(NS + "insert_tax_invoice_item", item);
                 }
             }
         }
@@ -126,36 +126,36 @@ public class TaxInvoiceService extends BaseService {
     @Transactional
     public Map<String, Object> deleteTaxInvoice(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        Map<String, Object> existing = sqlSession.selectOne(NS + "getTaxInvoiceInfo", params);
+        Map<String, Object> existing = sqlSession.selectOne(NS + "get_tax_invoice_info", params);
         if (existing == null) {
             throw new RuntimeException("세금계산서를 찾을 수 없습니다.");
         }
         if (!"draft".equals(existing.get("invoice_status"))) {
             throw new RuntimeException("발행된 세금계산서는 삭제할 수 없습니다.");
         }
-        sqlSession.delete(NS + "deleteTaxInvoiceItemsByInvoiceId", params);
-        sqlSession.delete(NS + "deleteTaxInvoice", params);
+        sqlSession.delete(NS + "delete_tax_invoice_items_by_invoice_id", params);
+        sqlSession.delete(NS + "delete_tax_invoice", params);
         return params;
     }
 
     @Transactional
     public Map<String, Object> issueTaxInvoice(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        int updated = sqlSession.update(NS + "issueTaxInvoice", params);
+        int updated = sqlSession.update(NS + "issue_tax_invoice", params);
         if (updated == 0) {
             throw new RuntimeException("세금계산서를 찾을 수 없거나 이미 발행된 상태입니다.");
         }
-        return sqlSession.selectOne(NS + "getTaxInvoiceInfo", params);
+        return sqlSession.selectOne(NS + "get_tax_invoice_info", params);
     }
 
     @Transactional
     public Map<String, Object> cancelTaxInvoice(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
-        int updated = sqlSession.update(NS + "cancelTaxInvoice", params);
+        int updated = sqlSession.update(NS + "cancel_tax_invoice", params);
         if (updated == 0) {
             throw new RuntimeException("세금계산서를 찾을 수 없거나 취소할 수 없는 상태입니다.");
         }
-        return sqlSession.selectOne(NS + "getTaxInvoiceInfo", params);
+        return sqlSession.selectOne(NS + "get_tax_invoice_info", params);
     }
 
     public Map<String, Object> getMonthlyStats(Map<String, Object> params) {
@@ -165,9 +165,9 @@ public class TaxInvoiceService extends BaseService {
         String startDate = String.format("%04d-%02d-01", year, month);
         LocalDate firstDay = LocalDate.of(year, month, 1);
         String endDate = firstDay.withDayOfMonth(firstDay.lengthOfMonth()).toString();
-        params.put("startDate", startDate);
-        params.put("endDate", endDate);
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getMonthlyStats", params);
+        params.put("start_date", startDate);
+        params.put("end_date", endDate);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_monthly_stats", params);
         Map<String, Object> sales = new HashMap<>();
         sales.put("count", 0);
         sales.put("supply_amount", BigDecimal.ZERO);
@@ -204,12 +204,12 @@ public class TaxInvoiceService extends BaseService {
             String startDate = String.format("%04d-%02d-01", yearInt, monthInt);
             LocalDate firstDay = LocalDate.of(yearInt, monthInt, 1);
             String endDate = firstDay.withDayOfMonth(firstDay.lengthOfMonth()).toString();
-            params.put("startDate", startDate);
-            params.put("endDate", endDate);
+            params.put("start_date", startDate);
+            params.put("end_date", endDate);
         }
-        List<Map<String, Object>> byCostType = sqlSession.selectList(NS + "getCostTypeStats", params);
-        List<Map<String, Object>> byMonth = sqlSession.selectList(NS + "getCostTypeStatsByMonth", params);
-        Map<String, Object> summary = sqlSession.selectOne(NS + "getCostTypeStatsSummary", params);
+        List<Map<String, Object>> byCostType = sqlSession.selectList(NS + "get_cost_type_stats", params);
+        List<Map<String, Object>> byMonth = sqlSession.selectList(NS + "get_cost_type_stats_by_month", params);
+        Map<String, Object> summary = sqlSession.selectOne(NS + "get_cost_type_stats_summary", params);
         for (Map<String, Object> row : byCostType) {
             row.put("supply_amount", DecimalUtils.toBigDecimal(row.get("supply_amount")));
             row.put("tax_amount", DecimalUtils.toBigDecimal(row.get("tax_amount")));
diff --git a/backend-spring/src/main/java/com/erp/service/TemplateStandardService.java b/backend-spring/src/main/java/com/erp/service/TemplateStandardService.java
index 20c86c3d..386b7fd5 100644
--- a/backend-spring/src/main/java/com/erp/service/TemplateStandardService.java
+++ b/backend-spring/src/main/java/com/erp/service/TemplateStandardService.java
@@ -67,10 +67,10 @@ public class TemplateStandardService extends BaseService {
         params.put("limit",  limit);
         params.put("offset", offset);
 
-        List<Map<String, Object>> templates = sqlSession.selectList(NS + "getTemplateStandardList", params);
+        List<Map<String, Object>> templates = sqlSession.selectList(NS + "get_template_standard_list", params);
         templates.forEach(this::deserializeJsonFields);
 
-        Integer totalObj = sqlSession.selectOne(NS + "getTemplateStandardListCnt", params);
+        Integer totalObj = sqlSession.selectOne(NS + "get_template_standard_list_cnt", params);
         int total = totalObj != null ? totalObj : 0;
 
         Map<String, Object> result = new LinkedHashMap<>();
@@ -86,8 +86,8 @@ public class TemplateStandardService extends BaseService {
      */
     public Map<String, Object> getTemplateStandardInfo(String templateCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("templateCode", templateCode);
-        Map<String, Object> row = sqlSession.selectOne(NS + "getTemplateStandardInfo", params);
+        params.put("template_code", templateCode);
+        Map<String, Object> row = sqlSession.selectOne(NS + "get_template_standard_info", params);
         deserializeJsonFields(row);
         return row;
     }
@@ -100,8 +100,8 @@ public class TemplateStandardService extends BaseService {
         String templateCode = (String) params.get("template_code");
 
         Map<String, Object> checkParams = new HashMap<>();
-        checkParams.put("templateCode", templateCode);
-        if (sqlSession.selectOne(NS + "getTemplateStandardInfo", checkParams) != null) {
+        checkParams.put("template_code", templateCode);
+        if (sqlSession.selectOne(NS + "get_template_standard_info", checkParams) != null) {
             throw new IllegalArgumentException("템플릿 코드 '" + templateCode + "'는 이미 존재합니다.");
         }
 
@@ -110,7 +110,7 @@ public class TemplateStandardService extends BaseService {
         params.putIfAbsent("is_public",  "N");
         serializeJsonFields(params);
 
-        sqlSession.insert(NS + "insertTemplateStandard", params);
+        sqlSession.insert(NS + "insert_template_standard", params);
 
         return getTemplateStandardInfo(templateCode);
     }
@@ -120,10 +120,10 @@ public class TemplateStandardService extends BaseService {
      */
     @Transactional
     public Map<String, Object> updateTemplateStandard(String templateCode, Map<String, Object> params) {
-        params.put("templateCode", templateCode);
+        params.put("template_code", templateCode);
         serializeJsonFields(params);
 
-        int updated = sqlSession.update(NS + "updateTemplateStandard", params);
+        int updated = sqlSession.update(NS + "update_template_standard", params);
         if (updated == 0) return null;
 
         return getTemplateStandardInfo(templateCode);
@@ -135,8 +135,8 @@ public class TemplateStandardService extends BaseService {
     @Transactional
     public boolean deleteTemplateStandard(String templateCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("templateCode", templateCode);
-        return sqlSession.delete(NS + "deleteTemplateStandard", params) > 0;
+        params.put("template_code", templateCode);
+        return sqlSession.delete(NS + "delete_template_standard", params) > 0;
     }
 
     /**
@@ -145,7 +145,7 @@ public class TemplateStandardService extends BaseService {
     @Transactional
     public void updateTemplateStandardSortOrder(List<Map<String, Object>> templates) {
         for (Map<String, Object> t : templates) {
-            sqlSession.update(NS + "updateTemplateStandardSortOrder", t);
+            sqlSession.update(NS + "update_template_standard_sort_order", t);
         }
     }
 
@@ -154,9 +154,9 @@ public class TemplateStandardService extends BaseService {
      */
     @Transactional
     public Map<String, Object> duplicateTemplateStandard(Map<String, Object> params) {
-        String originalCode = (String) params.get("originalCode");
-        String newCode      = (String) params.get("newCode");
-        String newName      = (String) params.get("newName");
+        String originalCode = (String) params.get("original_code");
+        String newCode      = (String) params.get("new_code");
+        String newName      = (String) params.get("new_name");
         String companyCode  = (String) params.get("company_code");
         String createdBy    = (String) params.get("created_by");
 
@@ -166,8 +166,8 @@ public class TemplateStandardService extends BaseService {
         }
 
         Map<String, Object> checkParams = new HashMap<>();
-        checkParams.put("templateCode", newCode);
-        if (sqlSession.selectOne(NS + "getTemplateStandardInfo", checkParams) != null) {
+        checkParams.put("template_code", newCode);
+        if (sqlSession.selectOne(NS + "get_template_standard_info", checkParams) != null) {
             throw new IllegalArgumentException("템플릿 코드 '" + newCode + "'는 이미 존재합니다.");
         }
 
@@ -193,7 +193,7 @@ public class TemplateStandardService extends BaseService {
         // layout_config / default_size가 이미 Object이면 직렬화
         serializeJsonFields(newTemplate);
 
-        sqlSession.insert(NS + "insertTemplateStandard", newTemplate);
+        sqlSession.insert(NS + "insert_template_standard", newTemplate);
         return getTemplateStandardInfo(newCode);
     }
 
@@ -202,8 +202,8 @@ public class TemplateStandardService extends BaseService {
      */
     public List<String> getTemplateStandardCategoryList(String companyCode) {
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
-        List<Map<String, Object>> rows = sqlSession.selectList(NS + "getTemplateStandardCategoryList", params);
+        params.put("company_code", companyCode);
+        List<Map<String, Object>> rows = sqlSession.selectList(NS + "get_template_standard_category_list", params);
         List<String> categories = new ArrayList<>();
         for (Map<String, Object> row : rows) {
             Object cat = row.get("category");
diff --git a/backend-spring/src/main/java/com/erp/service/TestButtonDataflowService.java b/backend-spring/src/main/java/com/erp/service/TestButtonDataflowService.java
index bd2882c5..f7928d28 100644
--- a/backend-spring/src/main/java/com/erp/service/TestButtonDataflowService.java
+++ b/backend-spring/src/main/java/com/erp/service/TestButtonDataflowService.java
@@ -38,7 +38,7 @@ public class TestButtonDataflowService extends BaseService {
         log.info("전체 관계 목록 조회 - companyCode: {}", companyCode);
 
         Map<String, Object> params = new HashMap<>();
-        params.put("companyCode", companyCode);
+        params.put("company_code", companyCode);
         List<Map<String, Object>> diagrams = sqlSession.selectList("testButtonDataflow.selectDiagramsForRelationships", params);
 
         List<Map<String, Object>> result = new ArrayList<>();
@@ -49,15 +49,15 @@ public class TestButtonDataflowService extends BaseService {
             String targetTable = "";
 
             // relationships.fromTable.tableName
-            Object fromTableRaw = relationships.get("fromTable");
+            Object fromTableRaw = relationships.get("from_table");
             if (fromTableRaw instanceof Map<?, ?> ft) {
-                Object tn = ft.get("tableName");
+                Object tn = ft.get("table_name");
                 if (tn != null) sourceTable = tn.toString();
             }
             // relationships.toTable.tableName
-            Object toTableRaw = relationships.get("toTable");
+            Object toTableRaw = relationships.get("to_table");
             if (toTableRaw instanceof Map<?, ?> tt) {
-                Object tn = tt.get("tableName");
+                Object tn = tt.get("table_name");
                 if (tn != null) targetTable = tn.toString();
             }
 
@@ -68,8 +68,8 @@ public class TestButtonDataflowService extends BaseService {
             entry.put("id",          diagId != null ? diagId.toString() : "");
             entry.put("name",        diagName != null ? diagName.toString()
                     : "관계 " + (diagId != null ? diagId : ""));
-            entry.put("sourceTable", sourceTable);
-            entry.put("targetTable", targetTable);
+            entry.put("source_table", sourceTable);
+            entry.put("target_table", targetTable);
             entry.put("category",    "데이터 흐름");
             result.add(entry);
         }
@@ -88,9 +88,9 @@ public class TestButtonDataflowService extends BaseService {
      */
     public Map<String, Object> getTestStatus(String companyCode) {
         Map<String, Object> user = new LinkedHashMap<>();
-        user.put("userId",      "spring-test-user");
-        user.put("userName",    "Spring Test User");
-        user.put("companyCode", companyCode);
+        user.put("user_id",      "spring-test-user");
+        user.put("user_name",    "Spring Test User");
+        user.put("company_code", companyCode);
         user.put("email",       "test@example.com");
 
         Map<String, Object> status = new LinkedHashMap<>();
diff --git a/backend-spring/src/main/java/com/erp/service/TodoService.java b/backend-spring/src/main/java/com/erp/service/TodoService.java
index 61491827..fb022f7e 100644
--- a/backend-spring/src/main/java/com/erp/service/TodoService.java
+++ b/backend-spring/src/main/java/com/erp/service/TodoService.java
@@ -18,9 +18,9 @@ public class TodoService extends BaseService {
 
     public Map<String, Object> getTodoList(Map<String, Object> params) {
         commonService.applyPagination(params);
-        Integer totalObj = sqlSession.selectOne(NS + "getTodoListCnt", params);
+        Integer totalObj = sqlSession.selectOne(NS + "get_todo_list_cnt", params);
         int totalCount = totalObj != null ? totalObj : 0;
-        List<Map<String, Object>> list = sqlSession.selectList(NS + "getTodoList", params);
+        List<Map<String, Object>> list = sqlSession.selectList(NS + "get_todo_list", params);
 
         // stats 계산
         Map<String, Object> stats = new LinkedHashMap<>();
@@ -30,7 +30,7 @@ public class TodoService extends BaseService {
         long completed = list.stream().filter(t -> "completed".equals(t.get("status"))).count();
         long urgent = list.stream().filter(t -> Boolean.TRUE.equals(t.get("is_urgent"))).count();
         stats.put("pending", pending);
-        stats.put("inProgress", inProgress);
+        stats.put("in_progress", inProgress);
         stats.put("completed", completed);
         stats.put("urgent", urgent);
 
@@ -40,26 +40,26 @@ public class TodoService extends BaseService {
     }
 
     public Map<String, Object> getTodoInfo(Map<String, Object> params) {
-        return sqlSession.selectOne(NS + "getTodoInfo", params);
+        return sqlSession.selectOne(NS + "get_todo_info", params);
     }
 
     @Transactional
     public Map<String, Object> insertTodo(Map<String, Object> params) {
         String id = UUID.randomUUID().toString();
         params.put("id", id);
-        sqlSession.insert(NS + "insertTodo", params);
-        return sqlSession.selectOne(NS + "getTodoInfo", Map.of("id", id));
+        sqlSession.insert(NS + "insert_todo", params);
+        return sqlSession.selectOne(NS + "get_todo_info", Map.of("id", id));
     }
 
     @Transactional
     public Map<String, Object> updateTodo(Map<String, Object> params) {
-        sqlSession.update(NS + "updateTodo", params);
-        return sqlSession.selectOne(NS + "getTodoInfo", Map.of("id", params.get("id")));
+        sqlSession.update(NS + "update_todo", params);
+        return sqlSession.selectOne(NS + "get_todo_info", Map.of("id", params.get("id")));
     }
 
     @Transactional
     public Map<String, Object> deleteTodo(Map<String, Object> params) {
-        sqlSession.delete(NS + "deleteTodo", params);
+        sqlSession.delete(NS + "delete_todo", params);
         return params;
     }
 
@@ -68,8 +68,8 @@ public class TodoService extends BaseService {
         for (int i = 0; i < todoIds.size(); i++) {
             Map<String, Object> p = new HashMap<>();
             p.put("id", todoIds.get(i));
-            p.put("displayOrder", i);
-            sqlSession.update(NS + "updateTodoOrder", p);
+            p.put("display_order", i);
+            sqlSession.update(NS + "update_todo_order", p);
         }
     }
 }
diff --git a/backend-spring/src/main/java/com/erp/service/VehicleTripService.java b/backend-spring/src/main/java/com/erp/service/VehicleTripService.java
index cc0d7366..cfe71399 100644
--- a/backend-spring/src/main/java/com/erp/service/VehicleTripService.java
+++ b/backend-spring/src/main/java/com/erp/service/VehicleTripService.java
@@ -32,8 +32,8 @@ public class VehicleTripService extends BaseService {
     public Map<String, Object> startTrip(Map<String, Object> params) {
         String tripId = "TRIP-" + System.currentTimeMillis() + "-"
                 + UUID.randomUUID().toString().substring(0, 8);
-        params.put("tripId", tripId);
-        params.put("tripStatus", "start");
+        params.put("trip_id", tripId);
+        params.put("trip_status", "start");
 
         // 1. vehicle_trip_summary INSERT
         sqlSession.insert("vehicleTrip.insertVehicleTrip", params);
@@ -42,8 +42,8 @@ public class VehicleTripService extends BaseService {
         sqlSession.insert("vehicleTrip.insertVehicleTripLocation", params);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("tripId", tripId);
-        result.put("startLocation", Map.of(
+        result.put("trip_id", tripId);
+        result.put("start_location", Map.of(
                 "latitude", params.get("latitude"),
                 "longitude", params.get("longitude")
         ));
@@ -63,12 +63,12 @@ public class VehicleTripService extends BaseService {
 
         // 2. 종료 위치 INSERT
         Map<String, Object> locParams = new LinkedHashMap<>(params);
-        locParams.put("vehicleId", activeTrip.get("vehicle_id"));
-        locParams.put("tripStatus", "end");
+        locParams.put("vehicle_id", activeTrip.get("vehicle_id"));
+        locParams.put("trip_status", "end");
         locParams.put("departure", activeTrip.get("departure"));
         locParams.put("arrival", activeTrip.get("arrival"));
-        locParams.put("departureName", activeTrip.get("departure_name"));
-        locParams.put("destinationName", activeTrip.get("destination_name"));
+        locParams.put("departure_name", activeTrip.get("departure_name"));
+        locParams.put("destination_name", activeTrip.get("destination_name"));
         sqlSession.insert("vehicleTrip.insertVehicleTripLocation", locParams);
 
         // 3. 통계 조회 (COUNT, duration)
@@ -91,18 +91,18 @@ public class VehicleTripService extends BaseService {
 
         // 5. vehicle_trip_summary 업데이트
         Map<String, Object> updateParams = new LinkedHashMap<>();
-        updateParams.put("tripId", params.get("tripId"));
-        updateParams.put("companyCode", params.get("companyCode"));
-        updateParams.put("totalDistance", roundedDistance);
-        updateParams.put("durationMinutes", durationMinutes);
-        updateParams.put("locationCount", locationCount);
+        updateParams.put("trip_id", params.get("trip_id"));
+        updateParams.put("company_code", params.get("company_code"));
+        updateParams.put("total_distance", roundedDistance);
+        updateParams.put("duration_minutes", durationMinutes);
+        updateParams.put("location_count", locationCount);
         sqlSession.update("vehicleTrip.updateVehicleTripEnd", updateParams);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("tripId", params.get("tripId"));
-        result.put("totalDistance", roundedDistance);
-        result.put("durationMinutes", durationMinutes);
-        result.put("locationCount", locationCount);
+        result.put("trip_id", params.get("trip_id"));
+        result.put("total_distance", roundedDistance);
+        result.put("duration_minutes", durationMinutes);
+        result.put("location_count", locationCount);
         return result;
     }
 
@@ -130,21 +130,21 @@ public class VehicleTripService extends BaseService {
 
         // 3. 위치 INSERT
         Map<String, Object> locParams = new LinkedHashMap<>(params);
-        locParams.put("vehicleId", activeTrip.get("vehicle_id"));
-        locParams.put("tripStatus", "tracking");
+        locParams.put("vehicle_id", activeTrip.get("vehicle_id"));
+        locParams.put("trip_status", "tracking");
         locParams.put("departure", activeTrip.get("departure"));
         locParams.put("arrival", activeTrip.get("arrival"));
-        locParams.put("departureName", activeTrip.get("departure_name"));
-        locParams.put("destinationName", activeTrip.get("destination_name"));
-        locParams.put("distanceFromPrev", distanceFromPrev > 0 ? distanceFromPrev : null);
+        locParams.put("departure_name", activeTrip.get("departure_name"));
+        locParams.put("destination_name", activeTrip.get("destination_name"));
+        locParams.put("distance_from_prev", distanceFromPrev > 0 ? distanceFromPrev : null);
         sqlSession.insert("vehicleTrip.insertVehicleTripLocation", locParams);
 
         // 4. location_count + 1
         sqlSession.update("vehicleTrip.updateVehicleTripLocationCount", params);
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("locationId", locParams.get("id"));
-        result.put("distanceFromPrev", distanceFromPrev);
+        result.put("location_id", locParams.get("id"));
+        result.put("distance_from_prev", distanceFromPrev);
         return result;
     }
 
@@ -153,7 +153,7 @@ public class VehicleTripService extends BaseService {
      * 응답: { data: [...], total: N }
      */
     public Map<String, Object> getTripList(Map<String, Object> params) {
-        convertToInt(params, "vehicleId");
+        convertToInt(params, "vehicle_id");
         commonService.applyPagination(params);
         Number cntNum = sqlSession.selectOne("vehicleTrip.getVehicleTripListCnt", params);
         int total = cntNum != null ? cntNum.intValue() : 0;
@@ -188,7 +188,7 @@ public class VehicleTripService extends BaseService {
         Map<String, Object> trip = sqlSession.selectOne("vehicleTrip.getVehicleTripActiveByUser", params);
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("data", trip);
-        result.put("hasActiveTrip", trip != null);
+        result.put("has_active_trip", trip != null);
         return result;
     }
 
@@ -210,26 +210,26 @@ public class VehicleTripService extends BaseService {
 
     /** GET /reports/daily — 일별 통계 (기본 최근 30일) */
     public Map<String, Object> getDailyReport(Map<String, Object> params) {
-        convertToInt(params, "vehicleId");
+        convertToInt(params, "vehicle_id");
         LocalDate today = LocalDate.now();
-        String startDate = params.get("startDate") != null && !params.get("startDate").toString().isBlank()
-                ? params.get("startDate").toString() : today.minusDays(30).toString();
-        String endDate = params.get("endDate") != null && !params.get("endDate").toString().isBlank()
-                ? params.get("endDate").toString() : today.toString();
-        params.put("startDate", startDate);
-        params.put("endDate", endDate);
+        String startDate = params.get("start_date") != null && !params.get("start_date").toString().isBlank()
+                ? params.get("start_date").toString() : today.minusDays(30).toString();
+        String endDate = params.get("end_date") != null && !params.get("end_date").toString().isBlank()
+                ? params.get("end_date").toString() : today.toString();
+        params.put("start_date", startDate);
+        params.put("end_date", endDate);
 
         List<Map<String, Object>> data = sqlSession.selectList("vehicleTrip.getVehicleTripDailyReport", params);
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("startDate", startDate);
-        result.put("endDate", endDate);
+        result.put("start_date", startDate);
+        result.put("end_date", endDate);
         result.put("data", data);
         return result;
     }
 
     /** GET /reports/weekly — 주별 통계 */
     public Map<String, Object> getWeeklyReport(Map<String, Object> params) {
-        convertToInt(params, "vehicleId");
+        convertToInt(params, "vehicle_id");
         int year = params.get("year") != null
                 ? toInt(params.get("year")) : LocalDate.now().getYear();
         int month = params.get("month") != null
@@ -247,7 +247,7 @@ public class VehicleTripService extends BaseService {
 
     /** GET /reports/monthly — 월별 통계 */
     public Map<String, Object> getMonthlyReport(Map<String, Object> params) {
-        convertToInt(params, "vehicleId");
+        convertToInt(params, "vehicle_id");
         int year = params.get("year") != null
                 ? toInt(params.get("year")) : LocalDate.now().getYear();
         params.put("year", year);
@@ -274,16 +274,16 @@ public class VehicleTripService extends BaseService {
 
         Map<String, Object> result = new LinkedHashMap<>();
         result.put("period", params.get("period"));
-        result.put("totalTrips", totalTrips);
-        result.put("completedTrips", completedTrips);
-        result.put("activeTrips", toLong(row.get("active_trips")));
-        result.put("cancelledTrips", toLong(row.get("cancelled_trips")));
-        result.put("completionRate", completionRate);
-        result.put("totalDistance", toDouble(row.get("total_distance")));
-        result.put("totalDuration", toLong(row.get("total_duration")));
-        result.put("avgDistance", toDouble(row.get("avg_distance")));
-        result.put("avgDuration", toDouble(row.get("avg_duration")));
-        result.put("activeDrivers", toLong(row.get("active_drivers")));
+        result.put("total_trips", totalTrips);
+        result.put("completed_trips", completedTrips);
+        result.put("active_trips", toLong(row.get("active_trips")));
+        result.put("cancelled_trips", toLong(row.get("cancelled_trips")));
+        result.put("completion_rate", completionRate);
+        result.put("total_distance", toDouble(row.get("total_distance")));
+        result.put("total_duration", toLong(row.get("total_duration")));
+        result.put("avg_distance", toDouble(row.get("avg_distance")));
+        result.put("avg_duration", toDouble(row.get("avg_duration")));
+        result.put("active_drivers", toLong(row.get("active_drivers")));
         return result;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/WebTypeStandardService.java b/backend-spring/src/main/java/com/erp/service/WebTypeStandardService.java
index 848161d5..a37104e6 100644
--- a/backend-spring/src/main/java/com/erp/service/WebTypeStandardService.java
+++ b/backend-spring/src/main/java/com/erp/service/WebTypeStandardService.java
@@ -22,15 +22,15 @@ public class WebTypeStandardService extends BaseService {
 
     // input params (camelCase) → DB 저장 시 직렬화용
     private static final List<String> JSONB_FIELDS =
-            Arrays.asList("defaultConfig", "validationRules", "defaultStyle", "inputProperties");
+            Arrays.asList("default_config", "validation_rules", "default_style", "input_properties");
 
     // DB 컬럼명(snake_case) → 응답 필드명(camelCase) 매핑
     private static final Map<String, String> JSONB_DB_TO_RESPONSE = new LinkedHashMap<>();
     static {
-        JSONB_DB_TO_RESPONSE.put("default_config",    "defaultConfig");
-        JSONB_DB_TO_RESPONSE.put("validation_rules",  "validationRules");
-        JSONB_DB_TO_RESPONSE.put("default_style",     "defaultStyle");
-        JSONB_DB_TO_RESPONSE.put("input_properties",  "inputProperties");
+        JSONB_DB_TO_RESPONSE.put("default_config",    "default_config");
+        JSONB_DB_TO_RESPONSE.put("validation_rules",  "validation_rules");
+        JSONB_DB_TO_RESPONSE.put("default_style",     "default_style");
+        JSONB_DB_TO_RESPONSE.put("input_properties",  "input_properties");
     }
 
     // ── 목록 조회 ──────────────────────────────────────────────────
@@ -53,7 +53,7 @@ public class WebTypeStandardService extends BaseService {
     // ── 단건 조회 ──────────────────────────────────────────────────
     public Map<String, Object> getWebType(String webType) {
         Map<String, Object> row = sqlSession.selectOne(
-                "webTypeStandard.selectWebType", Map.of("webType", webType));
+                "webTypeStandard.selectWebType", Map.of("web_type", webType));
         if (row != null) parseJsonFields(row);
         return row;
     }
@@ -61,20 +61,20 @@ public class WebTypeStandardService extends BaseService {
     // ── 생성 ───────────────────────────────────────────────────────
     @Transactional
     public Map<String, Object> createWebType(Map<String, Object> params) {
-        String webType = (String) params.get("webType");
+        String webType = (String) params.get("web_type");
 
         // 중복 체크
         Map<String, Object> existing = sqlSession.selectOne(
-                "webTypeStandard.selectWebType", Map.of("webType", webType));
+                "webTypeStandard.selectWebType", Map.of("web_type", webType));
         if (existing != null) {
             throw new IllegalStateException("DUPLICATE");
         }
 
         // 기본값 적용
         params.putIfAbsent("category",      "input");
-        params.putIfAbsent("componentName", "TextWidget");
-        params.putIfAbsent("sortOrder",     0);
-        params.putIfAbsent("isActive",      "Y");
+        params.putIfAbsent("component_name", "TextWidget");
+        params.putIfAbsent("sort_order",     0);
+        params.putIfAbsent("is_active",      "Y");
 
         // JSONB 직렬화
         serializeJsonbFields(params);
@@ -83,7 +83,7 @@ public class WebTypeStandardService extends BaseService {
         log.info("웹타입 생성: web_type={}", webType);
 
         Map<String, Object> result = sqlSession.selectOne(
-                "webTypeStandard.selectWebType", Map.of("webType", webType));
+                "webTypeStandard.selectWebType", Map.of("web_type", webType));
         if (result != null) parseJsonFields(result);
         return result;
     }
@@ -97,11 +97,11 @@ public class WebTypeStandardService extends BaseService {
         int updated = sqlSession.update("webTypeStandard.updateWebType", params);
         if (updated == 0) return null;
 
-        String webType = (String) params.get("webType");
+        String webType = (String) params.get("web_type");
         log.info("웹타입 수정: web_type={}", webType);
 
         Map<String, Object> result = sqlSession.selectOne(
-                "webTypeStandard.selectWebType", Map.of("webType", webType));
+                "webTypeStandard.selectWebType", Map.of("web_type", webType));
         if (result != null) parseJsonFields(result);
         return result;
     }
@@ -110,7 +110,7 @@ public class WebTypeStandardService extends BaseService {
     @Transactional
     public boolean deleteWebType(String webType) {
         int deleted = sqlSession.delete(
-                "webTypeStandard.deleteWebType", Map.of("webType", webType));
+                "webTypeStandard.deleteWebType", Map.of("web_type", webType));
         if (deleted == 0) return false;
         log.info("웹타입 삭제: web_type={}", webType);
         return true;
@@ -120,11 +120,11 @@ public class WebTypeStandardService extends BaseService {
     @Transactional
     public void updateWebTypeSortOrder(Map<String, Object> params) {
         @SuppressWarnings("unchecked")
-        List<Map<String, Object>> webTypes = (List<Map<String, Object>>) params.get("webTypes");
-        String userId = (String) params.get("userId");
+        List<Map<String, Object>> webTypes = (List<Map<String, Object>>) params.get("web_types");
+        String userId = (String) params.get("user_id");
 
         for (Map<String, Object> item : webTypes) {
-            item.put("userId", userId);
+            item.put("user_id", userId);
             sqlSession.update("webTypeStandard.updateSortOrder", item);
         }
         log.info("웹타입 정렬 순서 일괄 업데이트: {} 건", webTypes.size());
diff --git a/backend-spring/src/main/java/com/erp/service/WorkHistoryService.java b/backend-spring/src/main/java/com/erp/service/WorkHistoryService.java
index b96ddcf9..1aa55734 100644
--- a/backend-spring/src/main/java/com/erp/service/WorkHistoryService.java
+++ b/backend-spring/src/main/java/com/erp/service/WorkHistoryService.java
@@ -58,12 +58,12 @@ public class WorkHistoryService extends BaseService {
         }
 
         Map<String, Object> result = new LinkedHashMap<>();
-        result.put("todayTotal", todayStats != null ? todayStats.get("today_total") : 0);
-        result.put("todayCompleted", todayStats != null ? todayStats.get("today_completed") : 0);
-        result.put("totalWeight", totalStats != null ? totalStats.get("total_weight") : 0);
-        result.put("totalDistance", totalStats != null ? totalStats.get("total_distance") : 0);
-        result.put("onTimeRate", onTimeStats != null ? onTimeStats.get("on_time_rate") : 0);
-        result.put("typeDistribution", typeDistribution);
+        result.put("today_total", todayStats != null ? todayStats.get("today_total") : 0);
+        result.put("today_completed", todayStats != null ? todayStats.get("today_completed") : 0);
+        result.put("total_weight", totalStats != null ? totalStats.get("total_weight") : 0);
+        result.put("total_distance", totalStats != null ? totalStats.get("total_distance") : 0);
+        result.put("on_time_rate", onTimeStats != null ? onTimeStats.get("on_time_rate") : 0);
+        result.put("type_distribution", typeDistribution);
         return result;
     }
 
diff --git a/backend-spring/src/main/java/com/erp/service/YardLayoutService.java b/backend-spring/src/main/java/com/erp/service/YardLayoutService.java
index eb8157c4..2abae0aa 100644
--- a/backend-spring/src/main/java/com/erp/service/YardLayoutService.java
+++ b/backend-spring/src/main/java/com/erp/service/YardLayoutService.java
@@ -43,7 +43,7 @@ public class YardLayoutService extends BaseService {
     public Map<String, Object> deleteYardLayout(Map<String, Object> params) {
         commonService.applyCompanyCodeFilter(params);
         Map<String, Object> placementParams = new HashMap<>();
-        placementParams.put("yardLayoutId", params.get("id"));
+        placementParams.put("yard_layout_id", params.get("id"));
         sqlSession.delete("yardLayout.deleteYardPlacementsByLayoutId", placementParams);
         sqlSession.delete("yardLayout.deleteYardLayout", params);
         return params;
@@ -77,7 +77,7 @@ public class YardLayoutService extends BaseService {
             sqlSession.update("yardLayout.updateYardPlacement", placement);
         }
         Map<String, Object> result = new HashMap<>();
-        result.put("updatedCount", placements.size());
+        result.put("updated_count", placements.size());
         return result;
     }
 
@@ -91,21 +91,21 @@ public class YardLayoutService extends BaseService {
         Map<String, Object> newLayout = new HashMap<>();
         newLayout.put("name", "Copy of " + original.get("name"));
         newLayout.put("description", original.get("description"));
-        newLayout.put("createdBy", original.get("created_by"));
-        newLayout.put("companyCode", params.get("companyCode"));
+        newLayout.put("created_by", original.get("created_by"));
+        newLayout.put("company_code", params.get("company_code"));
         sqlSession.insert("yardLayout.insertYardLayout", newLayout);
         Long newId = ((Number) newLayout.get("id")).longValue();
 
         Map<String, Object> placementParams = new HashMap<>();
-        placementParams.put("yardLayoutId", params.get("id"));
+        placementParams.put("yard_layout_id", params.get("id"));
         List<Map<String, Object>> placements = sqlSession.selectList("yardLayout.getYardPlacementList", placementParams);
         for (Map<String, Object> p : placements) {
             Map<String, Object> newPlacement = new HashMap<>(p);
             newPlacement.remove("id");
-            newPlacement.put("yardLayoutId", newId);
+            newPlacement.put("yard_layout_id", newId);
             sqlSession.insert("yardLayout.insertYardPlacement", newPlacement);
         }
-        newLayout.put("placementCount", placements.size());
+        newLayout.put("placement_count", placements.size());
         return newLayout;
     }
 }
diff --git a/backend-spring/src/main/resources/application.yml b/backend-spring/src/main/resources/application.yml
index 650fcc01..03ae66c7 100644
--- a/backend-spring/src/main/resources/application.yml
+++ b/backend-spring/src/main/resources/application.yml
@@ -14,7 +14,7 @@ spring:
   jackson:
     default-property-inclusion: always
   datasource:
-    url: jdbc:postgresql://39.117.244.52:11132/plm
+    url: jdbc:postgresql://39.117.244.52:11132/testvex
     username: postgres
     password: "ph0909!!"
     driver-class-name: org.postgresql.Driver
diff --git a/backend-spring/src/main/resources/mapper/admin.xml b/backend-spring/src/main/resources/mapper/admin.xml
index f5a79440..031fb82f 100644
--- a/backend-spring/src/main/resources/mapper/admin.xml
+++ b/backend-spring/src/main/resources/mapper/admin.xml
@@ -29,28 +29,28 @@
           , ARRAY[MENU.OBJID] AS PATH
       FROM MENU_INFO MENU
       WHERE (MENU.PARENT_OBJ_ID IS NULL OR MENU.PARENT_OBJ_ID = '0')
-      <if test="!includeInactive">
+      <if test="!include_inactive">
         AND MENU.STATUS = 'active'
       </if>
       <choose>
-        <when test='userType == "SUPER_ADMIN" and companyCode == "*" and !isManagementScreen'>
+        <when test='user_type == "SUPER_ADMIN" and company_code == "*" and !is_management_screen'>
           AND MENU.COMPANY_CODE = '*'
         </when>
-        <when test='companyCode != null and companyCode != "*"'>
-          AND (MENU.COMPANY_CODE = #{companyCode} OR MENU.COMPANY_CODE = '*')
+        <when test='company_code != null and company_code != "*"'>
+          AND (MENU.COMPANY_CODE = #{company_code} OR MENU.COMPANY_CODE = '*')
         </when>
       </choose>
-      <if test="menuType != null">
-        AND MENU.MENU_TYPE = CAST(#{menuType} AS NUMERIC)
+      <if test="menu_type != null">
+        AND MENU.MENU_TYPE = CAST(#{menu_type} AS NUMERIC)
       </if>
-      <if test='userId != null and userType != null and userType != "SUPER_ADMIN" and !isManagementScreen'>
+      <if test='user_id != null and user_type != null and user_type != "SUPER_ADMIN" and !is_management_screen'>
         AND EXISTS (
           SELECT 1
           FROM REL_MENU_AUTH RMA
           JOIN AUTHORITY_MASTER AM ON RMA.AUTH_OBJID = AM.OBJID
           JOIN AUTHORITY_SUB_USER ASU ON AM.OBJID = ASU.MASTER_OBJID
           WHERE RMA.MENU_OBJID = MENU.OBJID
-            AND ASU.USER_ID = #{userId}
+            AND ASU.USER_ID = #{user_id}
             AND AM.STATUS = 'active'
             AND RMA.READ_YN = 'Y'
         )
@@ -79,25 +79,25 @@
       JOIN V_MENU V
           ON S.PARENT_OBJ_ID = V.OBJID
       WHERE S.OBJID != ALL(V.PATH)
-      <if test="!includeInactive">
+      <if test="!include_inactive">
         AND S.STATUS = 'active'
       </if>
       <choose>
-        <when test='userType == "SUPER_ADMIN" and companyCode == "*" and !isManagementScreen'>
+        <when test='user_type == "SUPER_ADMIN" and company_code == "*" and !is_management_screen'>
           AND S.COMPANY_CODE = '*'
         </when>
-        <when test='companyCode != null and companyCode != "*"'>
-          AND (S.COMPANY_CODE = #{companyCode} OR S.COMPANY_CODE = '*')
+        <when test='company_code != null and company_code != "*"'>
+          AND (S.COMPANY_CODE = #{company_code} OR S.COMPANY_CODE = '*')
         </when>
       </choose>
-      <if test='userId != null and userType != null and userType != "SUPER_ADMIN" and !isManagementScreen'>
+      <if test='user_id != null and user_type != null and user_type != "SUPER_ADMIN" and !is_management_screen'>
         AND EXISTS (
           SELECT 1
           FROM REL_MENU_AUTH RMA
           JOIN AUTHORITY_MASTER AM ON RMA.AUTH_OBJID = AM.OBJID
           JOIN AUTHORITY_SUB_USER ASU ON AM.OBJID = ASU.MASTER_OBJID
           WHERE RMA.MENU_OBJID = S.OBJID
-            AND ASU.USER_ID = #{userId}
+            AND ASU.USER_ID = #{user_id}
             AND AM.STATUS = 'active'
             AND RMA.READ_YN = 'Y'
         )
@@ -127,7 +127,7 @@
              JOIN MULTI_LANG_TEXT MLT
                  ON MLKM.KEY_ID = MLT.KEY_ID
              WHERE MLKM.LANG_KEY = V.LANG_KEY
-               AND MLT.LANG_CODE = #{userLang}
+               AND MLT.LANG_CODE = #{user_lang}
              LIMIT 1),
             V.MENU_NAME_KOR
           ) AS TRANSLATED_NAME
@@ -137,7 +137,7 @@
              JOIN MULTI_LANG_TEXT MLT
                  ON MLKM.KEY_ID = MLT.KEY_ID
              WHERE MLKM.LANG_KEY = V.LANG_KEY_DESC
-               AND MLT.LANG_CODE = #{userLang}
+               AND MLT.LANG_CODE = #{user_lang}
              LIMIT 1),
             COALESCE(V.MENU_DESC, '')
           ) AS TRANSLATED_DESC
@@ -177,11 +177,11 @@
         AND MENU.MENU_TYPE = '1'
         AND MENU.STATUS = 'active'
       <choose>
-        <when test='userType == "SUPER_ADMIN" and companyCode == "*"'>
+        <when test='user_type == "SUPER_ADMIN" and company_code == "*"'>
           AND MENU.COMPANY_CODE = '*'
         </when>
         <otherwise>
-          AND (MENU.COMPANY_CODE = #{companyCode} OR MENU.COMPANY_CODE = '*')
+          AND (MENU.COMPANY_CODE = #{company_code} OR MENU.COMPANY_CODE = '*')
         </otherwise>
       </choose>
 
@@ -234,7 +234,7 @@
              JOIN MULTI_LANG_TEXT MLT
                  ON MLKM.KEY_ID = MLT.KEY_ID
              WHERE MLKM.LANG_KEY = V.LANG_KEY
-               AND MLT.LANG_CODE = #{userLang}
+               AND MLT.LANG_CODE = #{user_lang}
              LIMIT 1),
             V.MENU_NAME_KOR
           ) AS TRANSLATED_NAME
@@ -244,7 +244,7 @@
              JOIN MULTI_LANG_TEXT MLT
                  ON MLKM.KEY_ID = MLT.KEY_ID
              WHERE MLKM.LANG_KEY = V.LANG_KEY_DESC
-               AND MLT.LANG_CODE = #{userLang}
+               AND MLT.LANG_CODE = #{user_lang}
              LIMIT 1),
             COALESCE(V.MENU_DESC, '')
           ) AS TRANSLATED_DESC
@@ -274,11 +274,11 @@
       AND MENU_TYPE = '1'
       AND (MENU_DESC LIKE '%[POP]%' OR UPPER(MENU_NAME_KOR) LIKE '%POP%')
     <choose>
-      <when test='userType == "SUPER_ADMIN" and companyCode == "*"'>
+      <when test='user_type == "SUPER_ADMIN" and company_code == "*"'>
         AND COMPANY_CODE = '*'
       </when>
       <otherwise>
-        AND COMPANY_CODE = #{companyCode}
+        AND COMPANY_CODE = #{company_code}
       </otherwise>
     </choose>
     ORDER BY SEQ
@@ -296,9 +296,9 @@
         , COMPANY_CODE
         , STATUS
     FROM MENU_INFO
-    WHERE PARENT_OBJ_ID = #{parentObjid}
+    WHERE PARENT_OBJ_ID = #{parent_objid}
       AND STATUS = 'active'
-      AND COMPANY_CODE = #{parentCompanyCode}
+      AND COMPANY_CODE = #{parent_company_code}
     ORDER BY SEQ
   </select>
 
@@ -310,7 +310,7 @@
     FROM MENU_INFO M
     LEFT JOIN COMPANY_MNG C
         ON M.COMPANY_CODE = C.COMPANY_CODE
-    WHERE M.OBJID = #{menuId}::NUMERIC
+    WHERE M.OBJID = #{menu_id}::NUMERIC
   </select>
 
   <!-- 메뉴 등록 -->
@@ -330,19 +330,19 @@
         , LANG_KEY_DESC
         , MENU_ICON
     ) VALUES (
-        #{menuType}
-        , #{parentObjId}
-        , #{menuNameKor}
-        , #{menuUrl}
-        , #{menuDesc}
+        #{menu_type}
+        , #{parent_obj_id}
+        , #{menu_name_kor}
+        , #{menu_url}
+        , #{menu_desc}
         , #{seq}
         , #{writer}
         , NOW()
         , COALESCE(#{status}, 'active')
-        , #{companyCode}
-        , #{langKey}
-        , #{langKeyDesc}
-        , #{menuIcon}
+        , #{company_code}
+        , #{lang_key}
+        , #{lang_key_desc}
+        , #{menu_icon}
     )
   </insert>
 
@@ -350,28 +350,28 @@
   <update id="updateMenu" parameterType="map">
     UPDATE MENU_INFO
     SET
-        MENU_NAME_KOR = #{menuNameKor}
-        , MENU_URL = #{menuUrl}
-        , MENU_DESC = #{menuDesc}
+        MENU_NAME_KOR = #{menu_name_kor}
+        , MENU_URL = #{menu_url}
+        , MENU_DESC = #{menu_desc}
         , SEQ = #{seq}
         , STATUS = #{status}
-        , LANG_KEY = #{langKey}
-        , LANG_KEY_DESC = #{langKeyDesc}
-        , MENU_ICON = #{menuIcon}
-    WHERE OBJID = #{menuId}::NUMERIC
+        , LANG_KEY = #{lang_key}
+        , LANG_KEY_DESC = #{lang_key_desc}
+        , MENU_ICON = #{menu_icon}
+    WHERE OBJID = #{menu_id}::NUMERIC
   </update>
 
   <!-- 메뉴 삭제 -->
   <delete id="deleteMenu" parameterType="map">
     DELETE FROM MENU_INFO
-    WHERE OBJID = #{menuId}::NUMERIC
+    WHERE OBJID = #{menu_id}::NUMERIC
   </delete>
 
   <!-- 메뉴 상태 토글 -->
   <update id="updateMenuStatus" parameterType="map">
     UPDATE MENU_INFO
     SET STATUS = #{status}
-    WHERE OBJID = #{menuId}::NUMERIC
+    WHERE OBJID = #{menu_id}::NUMERIC
   </update>
 
   <!-- ================================================================
@@ -400,8 +400,8 @@
         , COALESCE(LOCALE, '') AS LOCALE
     FROM USER_INFO
     WHERE 1=1
-    <if test='companyCode != null and companyCode != "*"'>
-      AND COMPANY_CODE = #{companyCode}
+    <if test='company_code != null and company_code != "*"'>
+      AND COMPANY_CODE = #{company_code}
     </if>
     <if test="search != null and search != ''">
       AND (USER_ID ILIKE #{search}
@@ -417,8 +417,8 @@
     <if test="status != null and status != ''">
       AND STATUS = #{status}
     </if>
-    <if test="deptCode != null and deptCode != ''">
-      AND DEPT_CODE = #{deptCode}
+    <if test="dept_code != null and dept_code != ''">
+      AND DEPT_CODE = #{dept_code}
     </if>
     ORDER BY CREATED_DATE DESC, USER_NAME ASC
     <include refid="common.pagination"/>
@@ -429,8 +429,8 @@
     SELECT COUNT(*)
     FROM USER_INFO
     WHERE 1=1
-    <if test='companyCode != null and companyCode != "*"'>
-      AND COMPANY_CODE = #{companyCode}
+    <if test='company_code != null and company_code != "*"'>
+      AND COMPANY_CODE = #{company_code}
     </if>
     <if test="search != null and search != ''">
       AND (USER_ID ILIKE #{search}
@@ -446,8 +446,8 @@
     <if test="status != null and status != ''">
       AND STATUS = #{status}
     </if>
-    <if test="deptCode != null and deptCode != ''">
-      AND DEPT_CODE = #{deptCode}
+    <if test="dept_code != null and dept_code != ''">
+      AND DEPT_CODE = #{dept_code}
     </if>
   </select>
 
@@ -474,14 +474,14 @@
         , STATUS
         , TO_CHAR(CREATED_DATE, 'YYYY-MM-DD') AS REG_DATE
     FROM USER_INFO
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </select>
 
   <!-- 사용자 변경이력 조회 -->
   <select id="selectUserHistory" parameterType="map" resultType="map">
     SELECT *
     FROM USER_CHANGE_HISTORY
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
     ORDER BY CHANGED_AT DESC
     <include refid="common.pagination"/>
   </select>
@@ -507,20 +507,20 @@
         , STATUS
         , CREATED_DATE
     ) VALUES (
-        #{userId}
-        , #{userPassword}
-        , #{userName}
-        , #{userNameEng}
-        , #{deptCode}
-        , #{deptName}
-        , #{positionCode}
-        , #{positionName}
+        #{user_id}
+        , #{user_password}
+        , #{user_name}
+        , #{user_name_eng}
+        , #{dept_code}
+        , #{dept_name}
+        , #{position_code}
+        , #{position_name}
         , #{email}
         , #{tel}
-        , #{cellPhone}
-        , #{userType}
-        , #{userTypeName}
-        , #{companyCode}
+        , #{cell_phone}
+        , #{user_type}
+        , #{user_type_name}
+        , #{company_code}
         , #{locale}
         , COALESCE(#{status}, 'active')
         , NOW()
@@ -531,32 +531,32 @@
   <update id="updateUser" parameterType="map">
     UPDATE USER_INFO
     SET
-        USER_NAME = #{userName}
-        , USER_NAME_ENG = #{userNameEng}
-        , DEPT_CODE = #{deptCode}
-        , DEPT_NAME = #{deptName}
-        , POSITION_CODE = #{positionCode}
-        , POSITION_NAME = #{positionName}
+        USER_NAME = #{user_name}
+        , USER_NAME_ENG = #{user_name_eng}
+        , DEPT_CODE = #{dept_code}
+        , DEPT_NAME = #{dept_name}
+        , POSITION_CODE = #{position_code}
+        , POSITION_NAME = #{position_name}
         , EMAIL = #{email}
         , TEL = #{tel}
-        , CELL_PHONE = #{cellPhone}
-        , USER_TYPE = #{userType}
-        , USER_TYPE_NAME = #{userTypeName}
-    WHERE USER_ID = #{userId}
+        , CELL_PHONE = #{cell_phone}
+        , USER_TYPE = #{user_type}
+        , USER_TYPE_NAME = #{user_type_name}
+    WHERE USER_ID = #{user_id}
   </update>
 
   <!-- 사용자 상태 변경 -->
   <update id="updateUserStatus" parameterType="map">
     UPDATE USER_INFO
     SET STATUS = #{status}
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </update>
 
   <!-- 비밀번호 초기화 -->
   <update id="updateUserPassword" parameterType="map">
     UPDATE USER_INFO
-    SET USER_PASSWORD = #{userPassword}
-    WHERE USER_ID = #{userId}
+    SET USER_PASSWORD = #{user_password}
+    WHERE USER_ID = #{user_id}
   </update>
 
   <!-- 사용자 로케일 조회 -->
@@ -564,14 +564,14 @@
     SELECT
         LOCALE
     FROM USER_INFO
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </select>
 
   <!-- 사용자 로케일 저장 -->
   <update id="updateUserLocale" parameterType="map">
     UPDATE USER_INFO
     SET LOCALE = #{locale}
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </update>
 
   <!-- ================================================================
@@ -637,7 +637,7 @@
         , WRITER
         , CREATED_DATE AS REGDATE
     FROM COMPANY_MNG
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <insert id="insertCompany" parameterType="map">
@@ -654,11 +654,11 @@
         , WRITER
         , CREATED_DATE
     ) VALUES (
-        #{companyCode}
-        , #{companyName}
-        , #{businessRegistrationNumber}
-        , #{representativeName}
-        , #{representativePhone}
+        #{company_code}
+        , #{company_name}
+        , #{business_registration_number}
+        , #{representative_name}
+        , #{representative_phone}
         , #{email}
         , #{website}
         , #{address}
@@ -671,21 +671,21 @@
   <update id="updateCompany" parameterType="map">
     UPDATE COMPANY_MNG
     SET
-        COMPANY_NAME = #{companyName}
-        , BUSINESS_REGISTRATION_NUMBER = #{businessRegistrationNumber}
-        , REPRESENTATIVE_NAME = #{representativeName}
-        , REPRESENTATIVE_PHONE = #{representativePhone}
+        COMPANY_NAME = #{company_name}
+        , BUSINESS_REGISTRATION_NUMBER = #{business_registration_number}
+        , REPRESENTATIVE_NAME = #{representative_name}
+        , REPRESENTATIVE_PHONE = #{representative_phone}
         , EMAIL = #{email}
         , WEBSITE = #{website}
         , ADDRESS = #{address}
         , STATUS = #{status}
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <delete id="deleteCompany" parameterType="map">
     UPDATE COMPANY_MNG
     SET STATUS = 'inactive'
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </delete>
 
   <!-- ================================================================
@@ -696,7 +696,7 @@
   <select id="selectUserDeptList" parameterType="map" resultType="map">
     SELECT *
     FROM USER_DEPT
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
     ORDER BY IS_PRIMARY DESC, CREATED_DATE ASC
   </select>
 
@@ -713,23 +713,23 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{userId}
-        , #{deptCode}
-        , #{isPrimary}
-        , #{deptName}
-        , #{userName}
-        , #{positionName}
-        , #{companyCode}
+        #{user_id}
+        , #{dept_code}
+        , #{is_primary}
+        , #{dept_name}
+        , #{user_name}
+        , #{position_name}
+        , #{company_code}
         , NOW()
         , NOW()
     )
     ON CONFLICT (USER_ID, DEPT_CODE) DO UPDATE
     SET
-        IS_PRIMARY = #{isPrimary}
-        , DEPT_NAME = #{deptName}
-        , USER_NAME = #{userName}
-        , POSITION_NAME = #{positionName}
-        , COMPANY_CODE = #{companyCode}
+        IS_PRIMARY = #{is_primary}
+        , DEPT_NAME = #{dept_name}
+        , USER_NAME = #{user_name}
+        , POSITION_NAME = #{position_name}
+        , COMPANY_CODE = #{company_code}
         , UPDATED_DATE = NOW()
   </insert>
 
@@ -739,14 +739,14 @@
     SET
         IS_PRIMARY = FALSE
         , UPDATED_DATE = NOW()
-    WHERE USER_ID = #{userId}
-      AND DEPT_CODE = #{deptCode}
+    WHERE USER_ID = #{user_id}
+      AND DEPT_CODE = #{dept_code}
   </update>
 
   <!-- 겸직 부서 전체 삭제 (메인 제외) -->
   <delete id="deleteUserDeptSub" parameterType="map">
     DELETE FROM USER_DEPT
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
       AND IS_PRIMARY = FALSE
   </delete>
 
@@ -754,25 +754,25 @@
   <update id="updateUserForDept" parameterType="map">
     UPDATE USER_INFO
     <set>
-      <if test="userName != null">USER_NAME = #{userName},</if>
-      <if test="userNameEng != null">USER_NAME_ENG = #{userNameEng},</if>
+      <if test="user_name != null">USER_NAME = #{user_name},</if>
+      <if test="user_name_eng != null">USER_NAME_ENG = #{user_name_eng},</if>
       <if test="email != null">EMAIL = #{email},</if>
       <if test="tel != null">TEL = #{tel},</if>
-      <if test="cellPhone != null">CELL_PHONE = #{cellPhone},</if>
+      <if test="cell_phone != null">CELL_PHONE = #{cell_phone},</if>
       <if test="sabun != null">SABUN = #{sabun},</if>
-      <if test="userType != null">USER_TYPE = #{userType},</if>
-      <if test="userTypeName != null">USER_TYPE_NAME = #{userTypeName},</if>
+      <if test="user_type != null">USER_TYPE = #{user_type},</if>
+      <if test="user_type_name != null">USER_TYPE_NAME = #{user_type_name},</if>
       <if test="status != null">STATUS = #{status},</if>
       <if test="locale != null">LOCALE = #{locale},</if>
-      <if test="deptCode != null">DEPT_CODE = #{deptCode},</if>
-      <if test="deptName != null">DEPT_NAME = #{deptName},</if>
-      <if test="positionCode != null">POSITION_CODE = #{positionCode},</if>
-      <if test="positionName != null">POSITION_NAME = #{positionName},</if>
-      <if test="companyCode != null">COMPANY_CODE = #{companyCode},</if>
-      <if test="userPassword != null">USER_PASSWORD = #{userPassword},</if>
-      USER_ID = #{userId}
+      <if test="dept_code != null">DEPT_CODE = #{dept_code},</if>
+      <if test="dept_name != null">DEPT_NAME = #{dept_name},</if>
+      <if test="position_code != null">POSITION_CODE = #{position_code},</if>
+      <if test="position_name != null">POSITION_NAME = #{position_name},</if>
+      <if test="company_code != null">COMPANY_CODE = #{company_code},</if>
+      <if test="user_password != null">USER_PASSWORD = #{user_password},</if>
+      USER_ID = #{user_id}
     </set>
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </update>
 
   <!-- ================================================================
@@ -788,7 +788,7 @@
         , ORDINAL_POSITION
     FROM INFORMATION_SCHEMA.COLUMNS
     WHERE TABLE_SCHEMA = 'public'
-      AND TABLE_NAME = #{tableName}
+      AND TABLE_NAME = #{table_name}
     ORDER BY ORDINAL_POSITION
   </select>
 
diff --git a/backend-spring/src/main/resources/mapper/analyticsReport.xml b/backend-spring/src/main/resources/mapper/analyticsReport.xml
index ed9e46c1..306cd050 100644
--- a/backend-spring/src/main/resources/mapper/analyticsReport.xml
+++ b/backend-spring/src/main/resources/mapper/analyticsReport.xml
@@ -39,14 +39,14 @@
       ORDER BY item_number, company_code, created_date DESC
     ) ii ON wi.item_id = ii.item_number AND wi.company_code = ii.company_code
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (wi.company_code = #{companyCode} OR wi.company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (wi.company_code = #{company_code} OR wi.company_code = '*')
     </if>
-    <if test="startDate != null and startDate != ''">
-      AND COALESCE(wi.start_date, wi.created_date::DATE::TEXT) &gt;= #{startDate}
+    <if test="start_date != null and start_date != ''">
+      AND COALESCE(wi.start_date, wi.created_date::DATE::TEXT) &gt;= #{start_date}
     </if>
-    <if test="endDate != null and endDate != ''">
-      AND COALESCE(wi.start_date, wi.created_date::DATE::TEXT) &lt;= #{endDate}
+    <if test="end_date != null and end_date != ''">
+      AND COALESCE(wi.start_date, wi.created_date::DATE::TEXT) &lt;= #{end_date}
     </if>
     ORDER BY date DESC NULLS LAST
   </select>
@@ -101,8 +101,8 @@
       GROUP BY item_code, company_code
     ) ih_out ON ist.item_code = ih_out.item_code AND ist.company_code = ih_out.company_code
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (ist.company_code = #{companyCode} OR ist.company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (ist.company_code = #{company_code} OR ist.company_code = '*')
     </if>
     ORDER BY date DESC NULLS LAST
   </select>
@@ -127,14 +127,14 @@
       po.company_code
     FROM purchase_order_mng po
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (po.company_code = #{companyCode} OR po.company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (po.company_code = #{company_code} OR po.company_code = '*')
     </if>
-    <if test="startDate != null and startDate != ''">
-      AND COALESCE(po.order_date, po.created_date::DATE::TEXT) &gt;= #{startDate}
+    <if test="start_date != null and start_date != ''">
+      AND COALESCE(po.order_date, po.created_date::DATE::TEXT) &gt;= #{start_date}
     </if>
-    <if test="endDate != null and endDate != ''">
-      AND COALESCE(po.order_date, po.created_date::DATE::TEXT) &lt;= #{endDate}
+    <if test="end_date != null and end_date != ''">
+      AND COALESCE(po.order_date, po.created_date::DATE::TEXT) &lt;= #{end_date}
     </if>
     ORDER BY date DESC NULLS LAST
   </select>
@@ -164,14 +164,14 @@
       ORDER BY item_number, company_code, created_date DESC
     ) ii ON wi.item_id = ii.item_number AND wi.company_code = ii.company_code
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (pr.company_code = #{companyCode} OR pr.company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (pr.company_code = #{company_code} OR pr.company_code = '*')
     </if>
-    <if test="startDate != null and startDate != ''">
-      AND COALESCE(pr.production_date, pr.created_date::DATE::TEXT) &gt;= #{startDate}
+    <if test="start_date != null and start_date != ''">
+      AND COALESCE(pr.production_date, pr.created_date::DATE::TEXT) &gt;= #{start_date}
     </if>
-    <if test="endDate != null and endDate != ''">
-      AND COALESCE(pr.production_date, pr.created_date::DATE::TEXT) &lt;= #{endDate}
+    <if test="end_date != null and end_date != ''">
+      AND COALESCE(pr.production_date, pr.created_date::DATE::TEXT) &lt;= #{end_date}
     </if>
     ORDER BY date DESC NULLS LAST
   </select>
@@ -201,8 +201,8 @@
       FROM user_info
     ) ui ON ei.manager_id = ui.user_id
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (ei.company_code = #{companyCode} OR ei.company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (ei.company_code = #{company_code} OR ei.company_code = '*')
     </if>
     ORDER BY equipment ASC
   </select>
@@ -240,8 +240,8 @@
       ORDER BY item_number, company_code, created_date DESC
     ) ii ON mm.mold_code = ii.item_number AND mm.company_code = ii.company_code
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (mm.company_code = #{companyCode} OR mm.company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (mm.company_code = #{company_code} OR mm.company_code = '*')
     </if>
     ORDER BY mold ASC
   </select>
diff --git a/backend-spring/src/main/resources/mapper/approval.xml b/backend-spring/src/main/resources/mapper/approval.xml
index 420ce6eb..1259b5e9 100644
--- a/backend-spring/src/main/resources/mapper/approval.xml
+++ b/backend-spring/src/main/resources/mapper/approval.xml
@@ -14,15 +14,15 @@
     <if test="is_active != null and is_active != ''">
       AND IS_ACTIVE = #{is_active}
     </if>
-    <if test="searchLike != null">
-      AND (DEFINITION_NAME ILIKE #{searchLike} OR DEFINITION_NAME_ENG ILIKE #{searchLike})
+    <if test="search_like != null">
+      AND (DEFINITION_NAME ILIKE #{search_like} OR DEFINITION_NAME_ENG ILIKE #{search_like})
     </if>
     ORDER BY COMPANY_CODE, DEFINITION_ID ASC
   </select>
 
   <select id="selectDefinitionById" parameterType="map" resultType="map">
     SELECT * FROM APPROVAL_DEFINITIONS
-    WHERE DEFINITION_ID = #{definitionId}
+    WHERE DEFINITION_ID = #{definition_id}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -35,7 +35,7 @@
       #{definition_name}, #{definition_name_eng}, #{description}, #{default_template_id},
       COALESCE(#{max_steps}, '5'), COALESCE(#{allow_self_approval}, 'false'),
       COALESCE(#{allow_cancel}, 'true'), COALESCE(#{is_active}, 'Y'),
-      #{companyCode}, #{userId}, #{userId}
+      #{company_code}, #{user_id}, #{user_id}
     )
   </insert>
 
@@ -66,17 +66,17 @@
       <if test="is_active != null">
         IS_ACTIVE = #{is_active},
       </if>
-      UPDATED_BY = #{userId},
+      UPDATED_BY = #{user_id},
       UPDATED_DATE = NOW()
     </set>
-    WHERE DEFINITION_ID = #{definitionId}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE DEFINITION_ID = #{definition_id}
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <delete id="deleteDefinition" parameterType="map">
     DELETE FROM APPROVAL_DEFINITIONS
-    WHERE DEFINITION_ID = #{definitionId}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE DEFINITION_ID = #{definition_id}
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </delete>
 
   <!-- ================================================================
@@ -89,8 +89,8 @@
     LEFT JOIN APPROVAL_DEFINITIONS D
       ON T.DEFINITION_ID = D.DEFINITION_ID AND T.COMPANY_CODE = D.COMPANY_CODE
     WHERE 1=1
-    <if test='companyCode != null and companyCode != "*"'>
-      AND T.COMPANY_CODE = #{companyCode}
+    <if test='company_code != null and company_code != "*"'>
+      AND T.COMPANY_CODE = #{company_code}
     </if>
     <if test="definition_id != null">
       AND T.DEFINITION_ID = #{definition_id}
@@ -106,9 +106,9 @@
     FROM APPROVAL_LINE_TEMPLATES T
     LEFT JOIN APPROVAL_DEFINITIONS D
       ON T.DEFINITION_ID = D.DEFINITION_ID AND T.COMPANY_CODE = D.COMPANY_CODE
-    WHERE T.TEMPLATE_ID = #{templateId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND T.COMPANY_CODE = #{companyCode}
+    WHERE T.TEMPLATE_ID = #{template_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND T.COMPANY_CODE = #{company_code}
     </if>
   </select>
 
@@ -119,7 +119,7 @@
     ) VALUES (
       #{template_name}, #{description}, #{definition_id},
       #{after_approval_flow_id},
-      COALESCE(#{is_active}, 'Y'), #{companyCode}, #{userId}, #{userId}
+      COALESCE(#{is_active}, 'Y'), #{company_code}, #{user_id}, #{user_id}
     )
   </insert>
 
@@ -141,17 +141,17 @@
       <if test="is_active != null">
         IS_ACTIVE = #{is_active},
       </if>
-      UPDATED_BY = #{userId},
+      UPDATED_BY = #{user_id},
       UPDATED_DATE = NOW()
     </set>
-    WHERE TEMPLATE_ID = #{templateId}
-    AND COMPANY_CODE = #{companyCode}
+    WHERE TEMPLATE_ID = #{template_id}
+    AND COMPANY_CODE = #{company_code}
   </update>
 
   <delete id="deleteTemplate" parameterType="map">
     DELETE FROM APPROVAL_LINE_TEMPLATES
-    WHERE TEMPLATE_ID = #{templateId}
-    AND COMPANY_CODE = #{companyCode}
+    WHERE TEMPLATE_ID = #{template_id}
+    AND COMPANY_CODE = #{company_code}
   </delete>
 
   <!-- ================================================================
@@ -160,9 +160,9 @@
 
   <select id="selectTemplateSteps" parameterType="map" resultType="map">
     SELECT * FROM APPROVAL_LINE_TEMPLATE_STEPS
-    WHERE TEMPLATE_ID = #{templateId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND COMPANY_CODE = #{companyCode}
+    WHERE TEMPLATE_ID = #{template_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND COMPANY_CODE = #{company_code}
     </if>
     ORDER BY STEP_ORDER ASC
   </select>
@@ -172,17 +172,17 @@
       TEMPLATE_ID, STEP_ORDER, APPROVER_TYPE, APPROVER_USER_ID,
       APPROVER_POSITION, APPROVER_DEPT_CODE, APPROVER_LABEL, COMPANY_CODE
     ) VALUES (
-      #{templateId}, #{step_order},
+      #{template_id}, #{step_order},
       COALESCE(#{approver_type}, 'user'),
       #{approver_user_id}, #{approver_position}, #{approver_dept_code},
-      #{approver_label}, #{companyCode}
+      #{approver_label}, #{company_code}
     )
   </insert>
 
   <delete id="deleteTemplateStepsByTemplateId" parameterType="map">
     DELETE FROM APPROVAL_LINE_TEMPLATE_STEPS
-    WHERE TEMPLATE_ID = #{templateId}
-    AND COMPANY_CODE = #{companyCode}
+    WHERE TEMPLATE_ID = #{template_id}
+    AND COMPANY_CODE = #{company_code}
   </delete>
 
   <!-- ================================================================
@@ -195,8 +195,8 @@
     LEFT JOIN APPROVAL_DEFINITIONS D
       ON R.DEFINITION_ID = D.DEFINITION_ID AND R.COMPANY_CODE = D.COMPANY_CODE
     WHERE 1=1
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (R.COMPANY_CODE = #{companyCode} OR R.COMPANY_CODE = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (R.COMPANY_CODE = #{company_code} OR R.COMPANY_CODE = '*')
     </if>
     <if test="status != null and status != ''">
       AND R.STATUS = #{status}
@@ -210,18 +210,18 @@
     <if test="requester_id != null and requester_id != ''">
       AND R.REQUESTER_ID = #{requester_id}
     </if>
-    <if test='myApprovals != null and myApprovals == "true"'>
+    <if test='my_approvals != null and my_approvals == "true"'>
       AND EXISTS (
         SELECT 1 FROM APPROVAL_LINES L
         WHERE L.REQUEST_ID = R.REQUEST_ID
-          AND L.APPROVER_ID = #{userId}
+          AND L.APPROVER_ID = #{user_id}
           AND L.STATUS = 'pending'
           AND L.COMPANY_CODE = R.COMPANY_CODE
       )
     </if>
     ORDER BY R.CREATED_DATE DESC
-    <if test="pageLimit != null">
-      LIMIT #{pageLimit} OFFSET #{pageOffset}
+    <if test="page_limit != null">
+      LIMIT #{page_limit} OFFSET #{page_offset}
     </if>
   </select>
 
@@ -229,8 +229,8 @@
     SELECT COUNT(*)
     FROM APPROVAL_REQUESTS R
     WHERE 1=1
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (R.COMPANY_CODE = #{companyCode} OR R.COMPANY_CODE = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (R.COMPANY_CODE = #{company_code} OR R.COMPANY_CODE = '*')
     </if>
     <if test="status != null and status != ''">
       AND R.STATUS = #{status}
@@ -244,11 +244,11 @@
     <if test="requester_id != null and requester_id != ''">
       AND R.REQUESTER_ID = #{requester_id}
     </if>
-    <if test='myApprovals != null and myApprovals == "true"'>
+    <if test='my_approvals != null and my_approvals == "true"'>
       AND EXISTS (
         SELECT 1 FROM APPROVAL_LINES L
         WHERE L.REQUEST_ID = R.REQUEST_ID
-          AND L.APPROVER_ID = #{userId}
+          AND L.APPROVER_ID = #{user_id}
           AND L.STATUS = 'pending'
           AND L.COMPANY_CODE = R.COMPANY_CODE
       )
@@ -261,17 +261,17 @@
     FROM APPROVAL_REQUESTS R
     LEFT JOIN APPROVAL_DEFINITIONS D
       ON R.DEFINITION_ID = D.DEFINITION_ID AND R.COMPANY_CODE = D.COMPANY_CODE
-    WHERE R.REQUEST_ID = #{requestId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (R.COMPANY_CODE = #{companyCode} OR R.COMPANY_CODE = '*')
+    WHERE R.REQUEST_ID = #{request_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND (R.COMPANY_CODE = #{company_code} OR R.COMPANY_CODE = '*')
     </if>
   </select>
 
   <select id="selectRequestByIdForUpdate" parameterType="map" resultType="map">
     SELECT R.*, R.TARGET_RECORD_DATA::TEXT AS TARGET_RECORD_DATA
     FROM APPROVAL_REQUESTS R
-    WHERE R.REQUEST_ID = #{requestId}
-    AND (R.COMPANY_CODE = #{companyCode} OR R.COMPANY_CODE = '*')
+    WHERE R.REQUEST_ID = #{request_id}
+    AND (R.COMPANY_CODE = #{company_code} OR R.COMPANY_CODE = '*')
     FOR UPDATE
   </select>
 
@@ -281,16 +281,16 @@
       TARGET_RECORD_DATA, STATUS, CURRENT_STEP, TOTAL_STEPS, APPROVAL_TYPE,
       REQUESTER_ID, REQUESTER_NAME, REQUESTER_DEPT,
       SCREEN_ID, BUTTON_COMPONENT_ID, COMPANY_CODE
-      <if test="finalApproverId != null">
+      <if test="final_approver_id != null">
         , FINAL_APPROVER_ID, COMPLETED_AT
       </if>
     ) VALUES (
-      #{title}, #{description}, #{definitionId}, #{templateId}, #{targetTable}, #{targetRecordId},
-      #{targetRecordData}::JSONB, #{status}, 1, #{totalSteps}, #{approvalType},
-      #{requesterId}, #{requesterName}, #{requesterDept},
-      #{screenId}, #{buttonComponentId}, #{companyCode}
-      <if test="finalApproverId != null">
-        , #{finalApproverId}, NOW()
+      #{title}, #{description}, #{definition_id}, #{template_id}, #{target_table}, #{target_record_id},
+      #{target_record_data}::JSONB, #{status}, 1, #{total_steps}, #{approval_type},
+      #{requester_id}, #{requester_name}, #{requester_dept},
+      #{screen_id}, #{button_component_id}, #{company_code}
+      <if test="final_approver_id != null">
+        , #{final_approver_id}, NOW()
       </if>
     )
   </insert>
@@ -298,31 +298,31 @@
   <update id="completeRequest" parameterType="map">
     UPDATE APPROVAL_REQUESTS
     SET STATUS = 'approved',
-        FINAL_APPROVER_ID = #{userId},
+        FINAL_APPROVER_ID = #{user_id},
         FINAL_COMMENT = #{comment},
         COMPLETED_AT = NOW(),
         UPDATED_DATE = NOW()
-    WHERE REQUEST_ID = #{requestId}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE REQUEST_ID = #{request_id}
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <update id="rejectRequest" parameterType="map">
     UPDATE APPROVAL_REQUESTS
     SET STATUS = 'rejected',
-        FINAL_APPROVER_ID = #{userId},
+        FINAL_APPROVER_ID = #{user_id},
         FINAL_COMMENT = #{comment},
         COMPLETED_AT = NOW(),
         UPDATED_DATE = NOW()
-    WHERE REQUEST_ID = #{requestId}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE REQUEST_ID = #{request_id}
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <update id="cancelRequest" parameterType="map">
     UPDATE APPROVAL_REQUESTS
     SET STATUS = 'cancelled',
         UPDATED_DATE = NOW()
-    WHERE REQUEST_ID = #{requestId}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE REQUEST_ID = #{request_id}
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <update id="postApproveRequest" parameterType="map">
@@ -330,28 +330,28 @@
     SET STATUS = 'approved',
         IS_POST_APPROVED = TRUE,
         POST_APPROVED_AT = NOW(),
-        FINAL_APPROVER_ID = #{userId},
+        FINAL_APPROVER_ID = #{user_id},
         FINAL_COMMENT = #{comment},
         COMPLETED_AT = NOW(),
         UPDATED_DATE = NOW()
-    WHERE REQUEST_ID = #{requestId}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE REQUEST_ID = #{request_id}
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <update id="updateRequestCurrentStep" parameterType="map">
     UPDATE APPROVAL_REQUESTS
-    SET CURRENT_STEP = #{nextStep},
+    SET CURRENT_STEP = #{next_step},
         UPDATED_DATE = NOW()
-    WHERE REQUEST_ID = #{requestId}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE REQUEST_ID = #{request_id}
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <update id="updateRequestStatus" parameterType="map">
     UPDATE APPROVAL_REQUESTS
     SET STATUS = #{status},
         UPDATED_DATE = NOW()
-    WHERE REQUEST_ID = #{requestId}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE REQUEST_ID = #{request_id}
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <!-- ================================================================
@@ -360,18 +360,18 @@
 
   <select id="selectLinesByRequestId" parameterType="map" resultType="map">
     SELECT * FROM APPROVAL_LINES
-    WHERE REQUEST_ID = #{requestId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE REQUEST_ID = #{request_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     ORDER BY STEP_ORDER ASC
   </select>
 
   <select id="selectLineByIdForUpdate" parameterType="map" resultType="map">
     SELECT * FROM APPROVAL_LINES
-    WHERE LINE_ID = #{lineId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND COMPANY_CODE IN (#{companyCode}, '*')
+    WHERE LINE_ID = #{line_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND COMPANY_CODE IN (#{company_code}, '*')
     </if>
     FOR UPDATE
   </select>
@@ -380,13 +380,13 @@
     INSERT INTO APPROVAL_LINES (
       REQUEST_ID, STEP_ORDER, APPROVER_ID, APPROVER_NAME, APPROVER_POSITION,
       APPROVER_DEPT, APPROVER_LABEL, STATUS, STEP_TYPE, COMPANY_CODE
-      <if test="processedAt != null">
+      <if test="processed_at != null">
         , PROCESSED_AT
       </if>
     ) VALUES (
-      #{requestId}, #{stepOrder}, #{approverId}, #{approverName}, #{approverPosition},
-      #{approverDept}, #{approverLabel}, #{status}, #{stepType}, #{companyCode}
-      <if test="processedAt != null">
+      #{request_id}, #{step_order}, #{approver_id}, #{approver_name}, #{approver_position},
+      #{approver_dept}, #{approver_label}, #{status}, #{step_type}, #{company_code}
+      <if test="processed_at != null">
         , NOW()
       </if>
     )
@@ -397,51 +397,51 @@
     SET STATUS = #{status},
         COMMENT = #{comment},
         PROCESSED_AT = NOW(),
-        PROXY_FOR = #{proxyFor},
-        PROXY_REASON = #{proxyReason}
-    WHERE LINE_ID = #{lineId}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+        PROXY_FOR = #{proxy_for},
+        PROXY_REASON = #{proxy_reason}
+    WHERE LINE_ID = #{line_id}
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <update id="skipRemainingLines" parameterType="map">
     UPDATE APPROVAL_LINES
     SET STATUS = 'skipped'
-    WHERE REQUEST_ID = #{requestId}
+    WHERE REQUEST_ID = #{request_id}
       AND STATUS IN ('pending', 'waiting')
-      AND LINE_ID != #{lineId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+      AND LINE_ID != #{line_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <update id="activateNextStepLines" parameterType="map">
     UPDATE APPROVAL_LINES
     SET STATUS = 'pending'
-    WHERE REQUEST_ID = #{requestId}
-      AND STEP_ORDER = #{nextStep}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE REQUEST_ID = #{request_id}
+      AND STEP_ORDER = #{next_step}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <select id="selectLinesForStep" parameterType="map" resultType="map">
     SELECT * FROM APPROVAL_LINES
-    WHERE REQUEST_ID = #{requestId}
-      AND STEP_ORDER = #{stepOrder}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE REQUEST_ID = #{request_id}
+      AND STEP_ORDER = #{step_order}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     FOR UPDATE
   </select>
 
   <select id="countRemainingLinesInStep" parameterType="map" resultType="int">
     SELECT COUNT(*) FROM APPROVAL_LINES
-    WHERE REQUEST_ID = #{requestId}
-      AND STEP_ORDER = #{stepOrder}
+    WHERE REQUEST_ID = #{request_id}
+      AND STEP_ORDER = #{step_order}
       AND STATUS NOT IN ('approved', 'skipped')
-      AND LINE_ID != #{lineId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+      AND LINE_ID != #{line_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <select id="countPendingLinesForRequest" parameterType="map" resultType="int">
     SELECT COUNT(*) FROM APPROVAL_LINES
-    WHERE REQUEST_ID = #{requestId}
+    WHERE REQUEST_ID = #{request_id}
       AND STATUS NOT IN ('approved', 'skipped')
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <!-- 통보 단계 라인 일괄 승인 (createRequest 내 첫 step이 notification일 때) -->
@@ -450,9 +450,9 @@
     SET STATUS = 'approved',
         COMMENT = '자동 통보 처리',
         PROCESSED_AT = NOW()
-    WHERE REQUEST_ID = #{requestId}
-      AND STEP_ORDER = #{stepOrder}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE REQUEST_ID = #{request_id}
+      AND STEP_ORDER = #{step_order}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <select id="selectMyPendingLines" parameterType="map" resultType="map">
@@ -463,9 +463,9 @@
     FROM APPROVAL_LINES L
     JOIN APPROVAL_REQUESTS R
       ON L.REQUEST_ID = R.REQUEST_ID AND L.COMPANY_CODE = R.COMPANY_CODE
-    WHERE L.APPROVER_ID = #{userId}
+    WHERE L.APPROVER_ID = #{user_id}
       AND L.STATUS = 'pending'
-      AND (L.COMPANY_CODE = #{companyCode} OR L.COMPANY_CODE = '*')
+      AND (L.COMPANY_CODE = #{company_code} OR L.COMPANY_CODE = '*')
     ORDER BY R.CREATED_DATE ASC
   </select>
 
@@ -480,14 +480,14 @@
     FROM APPROVAL_PROXY_SETTINGS PS
     LEFT JOIN USER_INFO U1 ON PS.ORIGINAL_USER_ID = U1.USER_ID AND PS.COMPANY_CODE = U1.COMPANY_CODE
     LEFT JOIN USER_INFO U2 ON PS.PROXY_USER_ID    = U2.USER_ID AND PS.COMPANY_CODE = U2.COMPANY_CODE
-    WHERE (PS.COMPANY_CODE = #{companyCode} OR PS.COMPANY_CODE = '*')
+    WHERE (PS.COMPANY_CODE = #{company_code} OR PS.COMPANY_CODE = '*')
     ORDER BY PS.CREATED_DATE DESC
   </select>
 
   <select id="selectProxyById" parameterType="map" resultType="map">
     SELECT * FROM APPROVAL_PROXY_SETTINGS
     WHERE ID = #{id}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <select id="countProxyOverlap" parameterType="map" resultType="int">
@@ -495,7 +495,7 @@
     WHERE ORIGINAL_USER_ID = #{original_user_id}
       AND IS_ACTIVE = 'Y'
       AND DATERANGE(START_DATE, END_DATE, '[]') &amp;&amp; DATERANGE(#{start_date}::DATE, #{end_date}::DATE, '[]')
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <insert id="insertProxySetting" parameterType="map" useGeneratedKeys="true" keyProperty="id" keyColumn="id">
@@ -503,7 +503,7 @@
       (ORIGINAL_USER_ID, PROXY_USER_ID, START_DATE, END_DATE, REASON, IS_ACTIVE, COMPANY_CODE)
     VALUES
       (#{original_user_id}, #{proxy_user_id}, #{start_date}, #{end_date},
-       #{reason}, COALESCE(#{is_active}, 'Y'), #{companyCode})
+       #{reason}, COALESCE(#{is_active}, 'Y'), #{company_code})
   </insert>
 
   <update id="updateProxySetting" parameterType="map">
@@ -527,23 +527,23 @@
       UPDATED_DATE = NOW()
     </set>
     WHERE ID = #{id}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <delete id="deleteProxySetting" parameterType="map">
     DELETE FROM APPROVAL_PROXY_SETTINGS
     WHERE ID = #{id}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </delete>
 
   <select id="selectActiveProxyForLine" parameterType="map" resultType="map">
     SELECT * FROM APPROVAL_PROXY_SETTINGS
-    WHERE ORIGINAL_USER_ID = #{originalUserId}
-      AND PROXY_USER_ID = #{proxyUserId}
+    WHERE ORIGINAL_USER_ID = #{original_user_id}
+      AND PROXY_USER_ID = #{proxy_user_id}
       AND IS_ACTIVE = 'Y'
       AND START_DATE &lt;= CURRENT_DATE
       AND END_DATE &gt;= CURRENT_DATE
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     LIMIT 1
   </select>
 
@@ -551,11 +551,11 @@
     SELECT PS.*, U.USER_NAME AS PROXY_USER_NAME
     FROM APPROVAL_PROXY_SETTINGS PS
     LEFT JOIN USER_INFO U ON PS.PROXY_USER_ID = U.USER_ID AND PS.COMPANY_CODE = U.COMPANY_CODE
-    WHERE PS.ORIGINAL_USER_ID = #{userId}
+    WHERE PS.ORIGINAL_USER_ID = #{user_id}
       AND PS.IS_ACTIVE = 'Y'
       AND PS.START_DATE &lt;= CURRENT_DATE
       AND PS.END_DATE &gt;= CURRENT_DATE
-      AND (PS.COMPANY_CODE = #{companyCode} OR PS.COMPANY_CODE = '*')
+      AND (PS.COMPANY_CODE = #{company_code} OR PS.COMPANY_CODE = '*')
   </select>
 
   <!-- ================================================================
@@ -565,23 +565,23 @@
   <select id="selectRequestForSync" parameterType="map" resultType="map">
     SELECT TARGET_TABLE, TARGET_RECORD_ID, APPROVAL_TYPE
     FROM APPROVAL_REQUESTS
-    WHERE REQUEST_ID = #{requestId}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE REQUEST_ID = #{request_id}
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <select id="checkTargetTableHasApprovalStatusColumn" parameterType="map" resultType="int">
     SELECT COUNT(*) FROM INFORMATION_SCHEMA.COLUMNS
-    WHERE TABLE_NAME = #{tableName}
+    WHERE TABLE_NAME = #{table_name}
     AND COLUMN_NAME = 'approval_status'
   </select>
 
   <!-- tableName은 Java에서 정규식으로 sanitize 후 전달 ([a-zA-Z0-9_] only) -->
   <update id="updateTargetTableApprovalStatus" parameterType="map">
     UPDATE ${tableName}
-    SET APPROVAL_STATUS = #{approvalStatus}
-    WHERE ID = #{targetRecordId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    SET APPROVAL_STATUS = #{approval_status}
+    WHERE ID = #{target_record_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </update>
 
diff --git a/backend-spring/src/main/resources/mapper/auditLog.xml b/backend-spring/src/main/resources/mapper/auditLog.xml
index 20581399..24cf2584 100644
--- a/backend-spring/src/main/resources/mapper/auditLog.xml
+++ b/backend-spring/src/main/resources/mapper/auditLog.xml
@@ -9,26 +9,26 @@
     FROM SYSTEM_AUDIT_LOG SAL
     LEFT JOIN COMPANY_MNG CI ON SAL.COMPANY_CODE = CI.COMPANY_CODE
     WHERE 1=1
-    <if test="filterCompany != null and filterCompany != ''">
-      AND (SAL.COMPANY_CODE = #{filterCompany} OR SAL.COMPANY_CODE = '*')
+    <if test="filter_company != null and filter_company != ''">
+      AND (SAL.COMPANY_CODE = #{filter_company} OR SAL.COMPANY_CODE = '*')
     </if>
-    <if test="userId != null and userId != ''">
-      AND SAL.USER_ID = #{userId}
+    <if test="user_id != null and user_id != ''">
+      AND SAL.USER_ID = #{user_id}
     </if>
-    <if test="resourceType != null and resourceType != ''">
-      AND SAL.RESOURCE_TYPE = #{resourceType}
+    <if test="resource_type != null and resource_type != ''">
+      AND SAL.RESOURCE_TYPE = #{resource_type}
     </if>
     <if test="action != null and action != ''">
       AND SAL.ACTION = #{action}
     </if>
-    <if test="tableName != null and tableName != ''">
-      AND SAL.TABLE_NAME = #{tableName}
+    <if test="table_name != null and table_name != ''">
+      AND SAL.TABLE_NAME = #{table_name}
     </if>
-    <if test="dateFrom != null and dateFrom != ''">
-      AND SAL.CREATED_DATE >= #{dateFrom}::TIMESTAMPTZ
+    <if test="date_from != null and date_from != ''">
+      AND SAL.CREATED_DATE >= #{date_from}::TIMESTAMPTZ
     </if>
-    <if test="dateTo != null and dateTo != ''">
-      AND SAL.CREATED_DATE &lt;= #{dateTo}::TIMESTAMPTZ
+    <if test="date_to != null and date_to != ''">
+      AND SAL.CREATED_DATE &lt;= #{date_to}::TIMESTAMPTZ
     </if>
     <if test="search != null and search != ''">
       AND (SAL.SUMMARY ILIKE CONCAT('%', #{search}, '%')
@@ -44,26 +44,26 @@
     SELECT COUNT(*)
     FROM SYSTEM_AUDIT_LOG SAL
     WHERE 1=1
-    <if test="filterCompany != null and filterCompany != ''">
-      AND (SAL.COMPANY_CODE = #{filterCompany} OR SAL.COMPANY_CODE = '*')
+    <if test="filter_company != null and filter_company != ''">
+      AND (SAL.COMPANY_CODE = #{filter_company} OR SAL.COMPANY_CODE = '*')
     </if>
-    <if test="userId != null and userId != ''">
-      AND SAL.USER_ID = #{userId}
+    <if test="user_id != null and user_id != ''">
+      AND SAL.USER_ID = #{user_id}
     </if>
-    <if test="resourceType != null and resourceType != ''">
-      AND SAL.RESOURCE_TYPE = #{resourceType}
+    <if test="resource_type != null and resource_type != ''">
+      AND SAL.RESOURCE_TYPE = #{resource_type}
     </if>
     <if test="action != null and action != ''">
       AND SAL.ACTION = #{action}
     </if>
-    <if test="tableName != null and tableName != ''">
-      AND SAL.TABLE_NAME = #{tableName}
+    <if test="table_name != null and table_name != ''">
+      AND SAL.TABLE_NAME = #{table_name}
     </if>
-    <if test="dateFrom != null and dateFrom != ''">
-      AND SAL.CREATED_DATE >= #{dateFrom}::TIMESTAMPTZ
+    <if test="date_from != null and date_from != ''">
+      AND SAL.CREATED_DATE >= #{date_from}::TIMESTAMPTZ
     </if>
-    <if test="dateTo != null and dateTo != ''">
-      AND SAL.CREATED_DATE &lt;= #{dateTo}::TIMESTAMPTZ
+    <if test="date_to != null and date_to != ''">
+      AND SAL.CREATED_DATE &lt;= #{date_to}::TIMESTAMPTZ
     </if>
     <if test="search != null and search != ''">
       AND (SAL.SUMMARY ILIKE CONCAT('%', #{search}, '%')
@@ -77,8 +77,8 @@
     SELECT DATE(CREATED_DATE) AS DATE, COUNT(*)::INT AS COUNT
     FROM SYSTEM_AUDIT_LOG
     WHERE CREATED_DATE >= NOW() - INTERVAL '1 day' * #{days}
-    <if test="companyCode != null and companyCode != ''">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != ''">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     GROUP BY DATE(CREATED_DATE)
     ORDER BY DATE DESC
@@ -89,8 +89,8 @@
     SELECT RESOURCE_TYPE, COUNT(*)::INT AS COUNT
     FROM SYSTEM_AUDIT_LOG
     WHERE CREATED_DATE >= NOW() - INTERVAL '1 day' * #{days}
-    <if test="companyCode != null and companyCode != ''">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != ''">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     GROUP BY RESOURCE_TYPE
     ORDER BY COUNT DESC
@@ -101,8 +101,8 @@
     SELECT ACTION, COUNT(*)::INT AS COUNT
     FROM SYSTEM_AUDIT_LOG
     WHERE CREATED_DATE >= NOW() - INTERVAL '1 day' * #{days}
-    <if test="companyCode != null and companyCode != ''">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != ''">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     GROUP BY ACTION
     ORDER BY COUNT DESC
@@ -113,8 +113,8 @@
     SELECT USER_ID, COALESCE(MAX(USER_NAME), USER_ID) AS USER_NAME, COUNT(*)::INT AS COUNT
     FROM SYSTEM_AUDIT_LOG
     WHERE CREATED_DATE >= NOW() - INTERVAL '1 day' * #{days}
-    <if test="companyCode != null and companyCode != ''">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != ''">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     GROUP BY USER_ID
     ORDER BY COUNT DESC
@@ -134,10 +134,10 @@
       GROUP BY USER_ID
     ) SAL ON U.USER_ID = SAL.USER_ID
     WHERE LOWER(U.STATUS) = 'active'
-    <if test="companyCode != null and companyCode != ''">
-      AND (U.COMPANY_CODE = #{companyCode} OR U.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != ''">
+      AND (U.COMPANY_CODE = #{company_code} OR U.COMPANY_CODE = '*')
     </if>
-    <if test="excludeWildcard != null and excludeWildcard == true">
+    <if test="exclude_wildcard != null and exclude_wildcard == true">
       AND U.COMPANY_CODE != '*'
     </if>
     ORDER BY COUNT DESC, U.USER_NAME ASC
@@ -150,10 +150,10 @@
       RESOURCE_ID, RESOURCE_NAME, TABLE_NAME, SUMMARY, CHANGES,
       IP_ADDRESS, REQUEST_PATH
     ) VALUES (
-      #{companyCode}, #{userId}, #{userName}, #{action}, #{resourceType},
-      #{resourceId}, #{resourceName}, #{tableName}, #{summary},
+      #{company_code}, #{user_id}, #{user_name}, #{action}, #{resource_type},
+      #{resource_id}, #{resource_name}, #{table_name}, #{summary},
       CAST(#{changes} AS JSONB),
-      #{ipAddress}, #{requestPath}
+      #{ip_address}, #{request_path}
     )
   </insert>
 
diff --git a/backend-spring/src/main/resources/mapper/auth.xml b/backend-spring/src/main/resources/mapper/auth.xml
index c7d95d66..2baed1f3 100644
--- a/backend-spring/src/main/resources/mapper/auth.xml
+++ b/backend-spring/src/main/resources/mapper/auth.xml
@@ -8,7 +8,7 @@
     SELECT
         USER_PASSWORD
     FROM USER_INFO
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </select>
 
   <!-- 사용자 전체 정보 조회 -->
@@ -33,7 +33,7 @@
         , LOCALE
         , PHOTO
     FROM USER_INFO
-    WHERE UPPER(USER_ID) = UPPER(#{userId})
+    WHERE UPPER(USER_ID) = UPPER(#{user_id})
   </select>
 
   <!-- 사용자 권한명 목록 조회 -->
@@ -43,7 +43,7 @@
     FROM AUTHORITY_SUB_USER ASU
     INNER JOIN AUTHORITY_MASTER AM
         ON ASU.MASTER_OBJID = AM.OBJID
-    WHERE ASU.USER_ID = #{userId}
+    WHERE ASU.USER_ID = #{user_id}
   </select>
 
   <!-- 회사명 조회 -->
@@ -51,7 +51,7 @@
     SELECT
         COMPANY_NAME
     FROM COMPANY_MNG
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <!-- 회사 코드 존재 여부 확인 (switch-company용) -->
@@ -60,7 +60,7 @@
         COMPANY_CODE
         , COMPANY_NAME
     FROM COMPANY_MNG
-    WHERE COMPANY_CODE = #{companyCode}
+    WHERE COMPANY_CODE = #{company_code}
   </select>
 
   <!-- 로그인 접근 로그 기록 -->
@@ -78,15 +78,15 @@
         , RECPTN_RSLT_CD
     ) VALUES (
         NOW()
-        , #{systemName}
-        , UPPER(#{userId})
-        , #{loginResult}
-        , #{errorMessage}
-        , #{remoteAddr}
-        , #{recptnDt}
-        , #{recptnRsltDtl}
-        , #{recptnRslt}
-        , #{recptnRsltCd}
+        , #{system_name}
+        , UPPER(#{user_id})
+        , #{login_result}
+        , #{error_message}
+        , #{remote_addr}
+        , #{recptn_dt}
+        , #{recptn_rslt_dtl}
+        , #{recptn_rslt}
+        , #{recptn_rslt_cd}
     )
   </insert>
 
@@ -95,7 +95,7 @@
     SELECT
         USER_ID
     FROM USER_INFO
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </select>
 
   <!-- 차량번호 중복 확인 (signup용) -->
@@ -103,7 +103,7 @@
     SELECT
         VEHICLE_NUMBER
     FROM VEHICLES
-    WHERE VEHICLE_NUMBER = #{vehicleNumber}
+    WHERE VEHICLE_NUMBER = #{vehicle_number}
   </select>
 
   <!-- 공차중계 회원가입 - 사용자 등록 -->
@@ -121,13 +121,13 @@
         , STATUS
         , CREATED_DATE
     ) VALUES (
-        #{userId}
-        , #{userPassword}
-        , #{userName}
-        , #{phoneNumber}
-        , #{licenseNumber}
-        , #{vehicleNumber}
-        , #{signupCompanyCode}
+        #{user_id}
+        , #{user_password}
+        , #{user_name}
+        , #{phone_number}
+        , #{license_number}
+        , #{vehicle_number}
+        , #{signup_company_code}
         , NULL
         , 'DRIVER'
         , 'active'
@@ -148,13 +148,13 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{vehicleNumber}
-        , #{vehicleType}
-        , #{userName}
-        , #{phoneNumber}
+        #{vehicle_number}
+        , #{vehicle_type}
+        , #{user_name}
+        , #{phone_number}
         , 'off'
-        , #{signupCompanyCode}
-        , #{userId}
+        , #{signup_company_code}
+        , #{user_id}
         , NOW()
         , NOW()
     )
diff --git a/backend-spring/src/main/resources/mapper/barcodeLabel.xml b/backend-spring/src/main/resources/mapper/barcodeLabel.xml
index 92396198..21af81dd 100644
--- a/backend-spring/src/main/resources/mapper/barcodeLabel.xml
+++ b/backend-spring/src/main/resources/mapper/barcodeLabel.xml
@@ -5,12 +5,12 @@
 
   <!-- ========== 검색 조건 ========== -->
   <sql id="barcodeLabelSearchCondition">
-    <if test="searchText != null and searchText != ''">
-      AND (LABEL_NAME_KOR ILIKE '%' || #{searchText} || '%'
-           OR LABEL_NAME_ENG ILIKE '%' || #{searchText} || '%')
+    <if test="search_text != null and search_text != ''">
+      AND (LABEL_NAME_KOR ILIKE '%' || #{search_text} || '%'
+           OR LABEL_NAME_ENG ILIKE '%' || #{search_text} || '%')
     </if>
-    <if test="useYn != null and useYn != ''">
-      AND USE_YN = #{useYn}
+    <if test="use_yn != null and use_yn != ''">
+      AND USE_YN = #{use_yn}
     </if>
   </sql>
 
@@ -58,7 +58,7 @@
         , UPDATED_DATE
         , UPDATED_BY
     FROM BARCODE_LABELS
-    WHERE LABEL_ID = #{labelId}
+    WHERE LABEL_ID = #{label_id}
   </select>
 
   <!-- ========== 라벨 생성 ========== -->
@@ -75,15 +75,15 @@
         , CREATED_BY
         , CREATED_DATE
     ) VALUES (
-        #{labelId}
-        , #{labelNameKor}
-        , #{labelNameEng}
+        #{label_id}
+        , #{label_name_kor}
+        , #{label_name_eng}
         , #{description}
-        , #{widthMm}
-        , #{heightMm}
-        , #{layoutJson}
+        , #{width_mm}
+        , #{height_mm}
+        , #{layout_json}
         , 'Y'
-        , #{createdBy}
+        , #{created_by}
         , NOW()
     )
   </insert>
@@ -92,32 +92,32 @@
   <update id="updateBarcodeLabel" parameterType="map">
     UPDATE BARCODE_LABELS
     <set>
-      <if test="labelNameKor != null">LABEL_NAME_KOR = #{labelNameKor},</if>
-      <if test="labelNameEng != null">LABEL_NAME_ENG = #{labelNameEng},</if>
+      <if test="label_name_kor != null">LABEL_NAME_KOR = #{label_name_kor},</if>
+      <if test="label_name_eng != null">LABEL_NAME_ENG = #{label_name_eng},</if>
       <if test="description != null">DESCRIPTION = #{description},</if>
-      <if test="useYn != null">USE_YN = #{useYn},</if>
+      <if test="use_yn != null">USE_YN = #{use_yn},</if>
       UPDATED_DATE = NOW()
-      <if test="updatedBy != null">, UPDATED_BY = #{updatedBy}</if>
+      <if test="updated_by != null">, UPDATED_BY = #{updated_by}</if>
     </set>
-    WHERE LABEL_ID = #{labelId}
+    WHERE LABEL_ID = #{label_id}
   </update>
 
   <!-- ========== 라벨 삭제 ========== -->
   <delete id="deleteBarcodeLabel" parameterType="map">
     DELETE FROM BARCODE_LABELS
-    WHERE LABEL_ID = #{labelId}
+    WHERE LABEL_ID = #{label_id}
   </delete>
 
   <!-- ========== 레이아웃 저장 ========== -->
   <update id="updateBarcodeLabelLayout" parameterType="map">
     UPDATE BARCODE_LABELS
     SET
-        WIDTH_MM = #{widthMm}
-        , HEIGHT_MM = #{heightMm}
-        , LAYOUT_JSON = #{layoutJson}
+        WIDTH_MM = #{width_mm}
+        , HEIGHT_MM = #{height_mm}
+        , LAYOUT_JSON = #{layout_json}
         , UPDATED_DATE = NOW()
-        <if test="updatedBy != null">, UPDATED_BY = #{updatedBy}</if>
-    WHERE LABEL_ID = #{labelId}
+        <if test="updated_by != null">, UPDATED_BY = #{updated_by}</if>
+    WHERE LABEL_ID = #{label_id}
   </update>
 
   <!-- ========== 라벨 복사 ========== -->
@@ -135,7 +135,7 @@
         , CREATED_DATE
     )
     SELECT
-        #{newLabelId}
+        #{new_label_id}
         , LABEL_NAME_KOR || ' (복사)'
         , LABEL_NAME_ENG
         , DESCRIPTION
@@ -143,10 +143,10 @@
         , HEIGHT_MM
         , LAYOUT_JSON
         , 'Y'
-        , #{createdBy}
+        , #{created_by}
         , NOW()
     FROM BARCODE_LABELS
-    WHERE LABEL_ID = #{labelId}
+    WHERE LABEL_ID = #{label_id}
   </insert>
 
   <!-- ========== 템플릿 목록 ========== -->
@@ -174,7 +174,7 @@
         , LAYOUT_JSON
         , SORT_ORDER
     FROM BARCODE_LABEL_TEMPLATES
-    WHERE TEMPLATE_ID = #{templateId}
+    WHERE TEMPLATE_ID = #{template_id}
   </select>
 
 </mapper>
diff --git a/backend-spring/src/main/resources/mapper/batch.xml b/backend-spring/src/main/resources/mapper/batch.xml
index c74fec12..43616f7c 100644
--- a/backend-spring/src/main/resources/mapper/batch.xml
+++ b/backend-spring/src/main/resources/mapper/batch.xml
@@ -63,7 +63,7 @@
             <when test="is_active != null">#{is_active}</when>
             <otherwise>'Y'</otherwise>
           </choose>
-        , #{companyCode}
+        , #{company_code}
         , <choose>
             <when test="save_mode != null">#{save_mode}</when>
             <otherwise>'INSERT'</otherwise>
@@ -134,7 +134,7 @@
         , COLUMN_DEFAULT
     FROM INFORMATION_SCHEMA.COLUMNS
     WHERE TABLE_SCHEMA = 'public'
-      AND TABLE_NAME = #{tableName}
+      AND TABLE_NAME = #{table_name}
     ORDER BY ORDINAL_POSITION
   </select>
 
diff --git a/backend-spring/src/main/resources/mapper/batchExecutionLog.xml b/backend-spring/src/main/resources/mapper/batchExecutionLog.xml
index b71710cd..95c1ac67 100644
--- a/backend-spring/src/main/resources/mapper/batchExecutionLog.xml
+++ b/backend-spring/src/main/resources/mapper/batchExecutionLog.xml
@@ -4,17 +4,17 @@
 <mapper namespace="batchExecutionLog">
 
   <sql id="batchExecutionLogSearchCondition">
-    <if test="batchConfigId != null">
-      AND bel.batch_config_id = #{batchConfigId}
+    <if test="batch_config_id != null">
+      AND bel.batch_config_id = #{batch_config_id}
     </if>
-    <if test="executionStatus != null and executionStatus != ''">
-      AND bel.execution_status = #{executionStatus}
+    <if test="execution_status != null and execution_status != ''">
+      AND bel.execution_status = #{execution_status}
     </if>
-    <if test="startDate != null and startDate != ''">
-      AND bel.start_time &gt;= #{startDate}::timestamp
+    <if test="start_date != null and start_date != ''">
+      AND bel.start_time &gt;= #{start_date}::timestamp
     </if>
-    <if test="endDate != null and endDate != ''">
-      AND bel.start_time &lt;= #{endDate}::timestamp
+    <if test="end_date != null and end_date != ''">
+      AND bel.start_time &lt;= #{end_date}::timestamp
     </if>
   </sql>
 
@@ -31,14 +31,14 @@
     LEFT JOIN batch_configs bc ON bel.batch_config_id::INTEGER = bc.id
 
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (bel.company_code = #{companyCode} OR bel.company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (bel.company_code = #{company_code} OR bel.company_code = '*')
     </if>
     <include refid="batchExecutionLogSearchCondition"/>
     <choose>
-      <when test="sortColumn != null and sortColumn != ''">
+      <when test="sort_column != null and sort_column != ''">
         ORDER BY ${sortColumn}
-        <if test="sortDirection != null and sortDirection != ''">
+        <if test="sort_direction != null and sort_direction != ''">
           ${sortDirection}
         </if>
       </when>
@@ -57,8 +57,8 @@
     LEFT JOIN batch_configs bc ON bel.batch_config_id::INTEGER = bc.id
 
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (bel.company_code = #{companyCode} OR bel.company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (bel.company_code = #{company_code} OR bel.company_code = '*')
     </if>
     <include refid="batchExecutionLogSearchCondition"/>
   </select>
@@ -76,15 +76,15 @@
     LEFT JOIN batch_configs bc ON bel.batch_config_id::INTEGER = bc.id
 
     WHERE bel.id = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (bel.company_code = #{companyCode} OR bel.company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (bel.company_code = #{company_code} OR bel.company_code = '*')
     </if>
   </select>
 
   <select id="getBatchExecutionLogLatest" parameterType="map" resultType="map">
     SELECT * FROM batch_execution_logs
 
-    WHERE batch_config_id = #{batchConfigId}
+    WHERE batch_config_id = #{batch_config_id}
 
     ORDER BY start_time DESC
     LIMIT 1
@@ -105,14 +105,14 @@
     FROM batch_execution_logs
 
     WHERE 1=1
-    <if test="batchConfigId != null">
-      AND batch_config_id = #{batchConfigId}
+    <if test="batch_config_id != null">
+      AND batch_config_id = #{batch_config_id}
     </if>
-    <if test="startDate != null and startDate != ''">
-      AND start_time &gt;= #{startDate}::timestamp
+    <if test="start_date != null and start_date != ''">
+      AND start_time &gt;= #{start_date}::timestamp
     </if>
-    <if test="endDate != null and endDate != ''">
-      AND start_time &lt;= #{endDate}::timestamp
+    <if test="end_date != null and end_date != ''">
+      AND start_time &lt;= #{end_date}::timestamp
     </if>
   </select>
 
@@ -123,34 +123,34 @@
       total_records, success_records, failed_records,
       error_message, error_details, server_name, process_id
     ) VALUES (
-      #{batchConfigId}, #{companyCode}, #{executionStatus},
-      COALESCE(#{startTime}::timestamp, NOW()),
-      #{endTime}::timestamp,
-      #{durationMs},
-      COALESCE(#{totalRecords}, '0'),
-      COALESCE(#{successRecords}, '0'),
-      COALESCE(#{failedRecords}, '0'),
-      #{errorMessage}, #{errorDetails},
-      #{serverName}, #{processId}
+      #{batch_config_id}, #{company_code}, #{execution_status},
+      COALESCE(#{start_time}::timestamp, NOW()),
+      #{end_time}::timestamp,
+      #{duration_ms},
+      COALESCE(#{total_records}, '0'),
+      COALESCE(#{success_records}, '0'),
+      COALESCE(#{failed_records}, '0'),
+      #{error_message}, #{error_details},
+      #{server_name}, #{process_id}
     )
   </insert>
 
   <update id="updateBatchExecutionLog" parameterType="map">
     UPDATE batch_execution_logs
     <set>
-      <if test="executionStatus != null">execution_status = #{executionStatus},</if>
-      <if test="endTime != null">end_time = #{endTime}::timestamp,</if>
-      <if test="durationMs != null">duration_ms = #{durationMs},</if>
-      <if test="totalRecords != null">total_records = #{totalRecords},</if>
-      <if test="successRecords != null">success_records = #{successRecords},</if>
-      <if test="failedRecords != null">failed_records = #{failedRecords},</if>
-      <if test="errorMessage != null">error_message = #{errorMessage},</if>
-      <if test="errorDetails != null">error_details = #{errorDetails},</if>
+      <if test="execution_status != null">execution_status = #{execution_status},</if>
+      <if test="end_time != null">end_time = #{end_time}::timestamp,</if>
+      <if test="duration_ms != null">duration_ms = #{duration_ms},</if>
+      <if test="total_records != null">total_records = #{total_records},</if>
+      <if test="success_records != null">success_records = #{success_records},</if>
+      <if test="failed_records != null">failed_records = #{failed_records},</if>
+      <if test="error_message != null">error_message = #{error_message},</if>
+      <if test="error_details != null">error_details = #{error_details},</if>
     </set>
 
     WHERE id = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </update>
 
@@ -158,8 +158,8 @@
     DELETE FROM batch_execution_logs
 
     WHERE id = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </delete>
 
diff --git a/backend-spring/src/main/resources/mapper/batchManagement.xml b/backend-spring/src/main/resources/mapper/batchManagement.xml
index 92401921..414a215a 100644
--- a/backend-spring/src/main/resources/mapper/batchManagement.xml
+++ b/backend-spring/src/main/resources/mapper/batchManagement.xml
@@ -79,7 +79,7 @@
 
     FROM batch_execution_log
 
-    WHERE batch_config_id = #{batchConfigId}
+    WHERE batch_config_id = #{batch_config_id}
       AND start_time >= NOW() - INTERVAL '24 hours'
 
     GROUP BY DATE_TRUNC('hour', start_time)
@@ -102,7 +102,7 @@
 
     FROM batch_execution_log
 
-    WHERE batch_config_id = #{batchConfigId}
+    WHERE batch_config_id = #{batch_config_id}
 
     ORDER BY start_time DESC
     LIMIT 20
diff --git a/backend-spring/src/main/resources/mapper/bom.xml b/backend-spring/src/main/resources/mapper/bom.xml
index a5a5c62c..01e01d3d 100644
--- a/backend-spring/src/main/resources/mapper/bom.xml
+++ b/backend-spring/src/main/resources/mapper/bom.xml
@@ -14,11 +14,11 @@
     LEFT JOIN ITEM_INFO II ON B.ITEM_ID = II.ID AND B.COMPANY_CODE = II.COMPANY_CODE
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
-    <if test="itemCode != null and itemCode != ''">
-      AND B.ITEM_CODE ILIKE '%' || #{itemCode} || '%'
+    <if test="item_code != null and item_code != ''">
+      AND B.ITEM_CODE ILIKE '%' || #{item_code} || '%'
     </if>
-    <if test="itemName != null and itemName != ''">
-      AND COALESCE(B.ITEM_NAME, II.ITEM_NAME) ILIKE '%' || #{itemName} || '%'
+    <if test="item_name != null and item_name != ''">
+      AND COALESCE(B.ITEM_NAME, II.ITEM_NAME) ILIKE '%' || #{item_name} || '%'
     </if>
     <if test="status != null and status != ''">
       AND B.STATUS = #{status}
@@ -33,11 +33,11 @@
     LEFT JOIN ITEM_INFO II ON B.ITEM_ID = II.ID AND B.COMPANY_CODE = II.COMPANY_CODE
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
-    <if test="itemCode != null and itemCode != ''">
-      AND B.ITEM_CODE ILIKE '%' || #{itemCode} || '%'
+    <if test="item_code != null and item_code != ''">
+      AND B.ITEM_CODE ILIKE '%' || #{item_code} || '%'
     </if>
-    <if test="itemName != null and itemName != ''">
-      AND COALESCE(B.ITEM_NAME, II.ITEM_NAME) ILIKE '%' || #{itemName} || '%'
+    <if test="item_name != null and item_name != ''">
+      AND COALESCE(B.ITEM_NAME, II.ITEM_NAME) ILIKE '%' || #{item_name} || '%'
     </if>
     <if test="status != null and status != ''">
       AND B.STATUS = #{status}
@@ -63,7 +63,7 @@
       COMPANY_CODE, ITEM_ID, ITEM_CODE, ITEM_NAME, BASE_QTY, UNIT, VERSION, STATUS, REMARK, WRITER
       , CREATED_DATE, UPDATED_DATE
     ) VALUES (
-      #{companyCode}, #{itemId}, #{itemCode}, #{itemName}, #{baseQty}, #{unit},
+      #{company_code}, #{item_id}, #{item_code}, #{item_name}, #{base_qty}, #{unit},
       COALESCE(#{version}, '1.0'), COALESCE(#{status}, 'active'), #{remark}, #{writer}
       , NOW(), NOW()
     )
@@ -72,14 +72,14 @@
   <update id="updateBom" parameterType="map">
     UPDATE BOM
     <set>
-      <if test="itemCode != null">
-        ITEM_CODE = #{itemCode},
+      <if test="item_code != null">
+        ITEM_CODE = #{item_code},
       </if>
-      <if test="itemName != null">
-        ITEM_NAME = #{itemName},
+      <if test="item_name != null">
+        ITEM_NAME = #{item_name},
       </if>
-      <if test="baseQty != null">
-        BASE_QTY = #{baseQty},
+      <if test="base_qty != null">
+        BASE_QTY = #{base_qty},
       </if>
       <if test="unit != null">
         UNIT = #{unit},
diff --git a/backend-spring/src/main/resources/mapper/booking.xml b/backend-spring/src/main/resources/mapper/booking.xml
index 9cf2323f..4288db26 100644
--- a/backend-spring/src/main/resources/mapper/booking.xml
+++ b/backend-spring/src/main/resources/mapper/booking.xml
@@ -86,7 +86,7 @@
         STATUS = 'rejected'
         , REJECTED_AT = NOW()
         , UPDATED_DATE = NOW()
-        , REJECTION_REASON = #{rejectionReason, jdbcType=VARCHAR}
+        , REJECTION_REASON = #{rejection_reason, jdbcType=VARCHAR}
 
     WHERE ID = #{id}
   </update>
diff --git a/backend-spring/src/main/resources/mapper/buttonActionStandard.xml b/backend-spring/src/main/resources/mapper/buttonActionStandard.xml
index 6457fe42..d3f9183e 100644
--- a/backend-spring/src/main/resources/mapper/buttonActionStandard.xml
+++ b/backend-spring/src/main/resources/mapper/buttonActionStandard.xml
@@ -42,7 +42,7 @@
 
     FROM button_action_standards
 
-    WHERE action_type = #{actionType}
+    WHERE action_type = #{action_type}
     LIMIT 1
   </select>
 
@@ -87,14 +87,14 @@
       <if test="updated_by != null">updated_by = #{updated_by},</if>
     </set>
 
-    WHERE action_type = #{actionType}
+    WHERE action_type = #{action_type}
   </update>
 
   <!-- 버튼 액션 삭제 -->
   <delete id="deleteButtonAction" parameterType="map">
     DELETE FROM button_action_standards
 
-    WHERE action_type = #{actionType}
+    WHERE action_type = #{action_type}
   </delete>
 
   <!-- 정렬 순서 개별 업데이트 -->
diff --git a/backend-spring/src/main/resources/mapper/buttonDataflow.xml b/backend-spring/src/main/resources/mapper/buttonDataflow.xml
index d0b136f1..abdea8f8 100644
--- a/backend-spring/src/main/resources/mapper/buttonDataflow.xml
+++ b/backend-spring/src/main/resources/mapper/buttonDataflow.xml
@@ -19,12 +19,12 @@
     FROM TABLE_RELATIONSHIPS
     WHERE IS_ACTIVE = 'Y'
       AND (
-        (FROM_TABLE_NAME = #{mainTable}   AND TO_TABLE_NAME = #{detailTable})
+        (FROM_TABLE_NAME = #{main_table}   AND TO_TABLE_NAME = #{detail_table})
         OR
-        (FROM_TABLE_NAME = #{detailTable} AND TO_TABLE_NAME = #{mainTable})
+        (FROM_TABLE_NAME = #{detail_table} AND TO_TABLE_NAME = #{main_table})
       )
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     LIMIT 1
   </select>
diff --git a/backend-spring/src/main/resources/mapper/cascadingAutoFill.xml b/backend-spring/src/main/resources/mapper/cascadingAutoFill.xml
index 36ba9be5..1b63e267 100644
--- a/backend-spring/src/main/resources/mapper/cascadingAutoFill.xml
+++ b/backend-spring/src/main/resources/mapper/cascadingAutoFill.xml
@@ -7,8 +7,8 @@
     <if test="keyword != null and keyword != ''">
       AND (G.GROUP_NAME ILIKE '%' || #{keyword} || '%')
     </if>
-    <if test="isActive != null and isActive != ''">
-      AND G.IS_ACTIVE = #{isActive}
+    <if test="is_active != null and is_active != ''">
+      AND G.IS_ACTIVE = #{is_active}
     </if>
   </sql>
 
@@ -18,8 +18,8 @@
     LEFT JOIN CASCADING_AUTO_FILL_MAPPING M
       ON G.GROUP_CODE = M.GROUP_CODE AND G.COMPANY_CODE = M.COMPANY_CODE
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (G.COMPANY_CODE = #{companyCode} OR G.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (G.COMPANY_CODE = #{company_code} OR G.COMPANY_CODE = '*')
     </if>
     <include refid="cascadingAutoFillGroupSearchCondition"/>
     GROUP BY G.GROUP_ID
@@ -31,8 +31,8 @@
     SELECT COUNT(DISTINCT G.GROUP_ID)
     FROM CASCADING_AUTO_FILL_GROUP G
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (G.COMPANY_CODE = #{companyCode} OR G.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (G.COMPANY_CODE = #{company_code} OR G.COMPANY_CODE = '*')
     </if>
     <include refid="cascadingAutoFillGroupSearchCondition"/>
   </select>
@@ -40,27 +40,27 @@
   <select id="getCascadingAutoFillGroupByCode" parameterType="map" resultType="map">
     SELECT *
     FROM CASCADING_AUTO_FILL_GROUP
-    WHERE GROUP_CODE = #{groupCode}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE GROUP_CODE = #{group_code}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
-    <if test="isActive != null">
-      AND IS_ACTIVE = #{isActive}
+    <if test="is_active != null">
+      AND IS_ACTIVE = #{is_active}
     </if>
   </select>
 
   <select id="getCascadingAutoFillMappingList" parameterType="map" resultType="map">
     SELECT *
     FROM CASCADING_AUTO_FILL_MAPPING
-    WHERE GROUP_CODE = #{groupCode}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE GROUP_CODE = #{group_code}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     ORDER BY SORT_ORDER, MAPPING_ID
   </select>
 
   <select id="getCascadingAutoFillGroupCount" parameterType="map" resultType="int">
     SELECT COUNT(*)
     FROM CASCADING_AUTO_FILL_GROUP
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <insert id="insertCascadingAutoFillGroup" parameterType="map" useGeneratedKeys="true" keyProperty="groupId">
@@ -69,14 +69,14 @@
       MASTER_TABLE, MASTER_VALUE_COLUMN, MASTER_LABEL_COLUMN,
       COMPANY_CODE, IS_ACTIVE, CREATED_DATE
     ) VALUES (
-      #{groupCode},
-      #{groupName},
+      #{group_code},
+      #{group_name},
       #{description,        jdbcType=VARCHAR},
-      #{masterTable},
-      #{masterValueColumn},
-      #{masterLabelColumn,  jdbcType=VARCHAR},
-      #{companyCode},
-      #{isActive,           jdbcType=VARCHAR},
+      #{master_table},
+      #{master_value_column},
+      #{master_label_column,  jdbcType=VARCHAR},
+      #{company_code},
+      #{is_active,           jdbcType=VARCHAR},
       CURRENT_TIMESTAMP
     )
   </insert>
@@ -86,42 +86,42 @@
       GROUP_CODE, COMPANY_CODE, SOURCE_COLUMN, TARGET_FIELD, TARGET_LABEL,
       IS_EDITABLE, IS_REQUIRED, DEFAULT_VALUE, SORT_ORDER
     ) VALUES (
-      #{groupCode},
-      #{companyCode},
-      #{sourceColumn},
-      #{targetField},
-      #{targetLabel,    jdbcType=VARCHAR},
-      #{isEditable,     jdbcType=VARCHAR},
-      #{isRequired,     jdbcType=VARCHAR},
-      #{defaultValue,   jdbcType=VARCHAR},
-      #{sortOrder}
+      #{group_code},
+      #{company_code},
+      #{source_column},
+      #{target_field},
+      #{target_label,    jdbcType=VARCHAR},
+      #{is_editable,     jdbcType=VARCHAR},
+      #{is_required,     jdbcType=VARCHAR},
+      #{default_value,   jdbcType=VARCHAR},
+      #{sort_order}
     )
   </insert>
 
   <update id="updateCascadingAutoFillGroup" parameterType="map">
     UPDATE CASCADING_AUTO_FILL_GROUP SET
-      GROUP_NAME          = COALESCE(#{groupName,         jdbcType=VARCHAR}, GROUP_NAME),
+      GROUP_NAME          = COALESCE(#{group_name,         jdbcType=VARCHAR}, GROUP_NAME),
       DESCRIPTION         = COALESCE(#{description,       jdbcType=VARCHAR}, DESCRIPTION),
-      MASTER_TABLE        = COALESCE(#{masterTable,       jdbcType=VARCHAR}, MASTER_TABLE),
-      MASTER_VALUE_COLUMN = COALESCE(#{masterValueColumn, jdbcType=VARCHAR}, MASTER_VALUE_COLUMN),
-      MASTER_LABEL_COLUMN = COALESCE(#{masterLabelColumn, jdbcType=VARCHAR}, MASTER_LABEL_COLUMN),
-      IS_ACTIVE           = COALESCE(#{isActive,          jdbcType=VARCHAR}, IS_ACTIVE),
+      MASTER_TABLE        = COALESCE(#{master_table,       jdbcType=VARCHAR}, MASTER_TABLE),
+      MASTER_VALUE_COLUMN = COALESCE(#{master_value_column, jdbcType=VARCHAR}, MASTER_VALUE_COLUMN),
+      MASTER_LABEL_COLUMN = COALESCE(#{master_label_column, jdbcType=VARCHAR}, MASTER_LABEL_COLUMN),
+      IS_ACTIVE           = COALESCE(#{is_active,          jdbcType=VARCHAR}, IS_ACTIVE),
       UPDATED_DATE        = CURRENT_TIMESTAMP
-    WHERE GROUP_CODE = #{groupCode}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE GROUP_CODE = #{group_code}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <delete id="deleteCascadingAutoFillMappings" parameterType="map">
     DELETE FROM CASCADING_AUTO_FILL_MAPPING
-    WHERE GROUP_CODE = #{groupCode}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE GROUP_CODE = #{group_code}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </delete>
 
   <delete id="deleteCascadingAutoFillGroup" parameterType="map">
     DELETE FROM CASCADING_AUTO_FILL_GROUP
-    WHERE GROUP_CODE = #{groupCode}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE GROUP_CODE = #{group_code}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
diff --git a/backend-spring/src/main/resources/mapper/cascadingCondition.xml b/backend-spring/src/main/resources/mapper/cascadingCondition.xml
index f5fd876f..ae0515f8 100644
--- a/backend-spring/src/main/resources/mapper/cascadingCondition.xml
+++ b/backend-spring/src/main/resources/mapper/cascadingCondition.xml
@@ -7,14 +7,14 @@
     <if test="keyword != null and keyword != ''">
       AND CONDITION_NAME ILIKE '%' || #{keyword} || '%'
     </if>
-    <if test="isActive != null and isActive != ''">
-      AND IS_ACTIVE = #{isActive}
+    <if test="is_active != null and is_active != ''">
+      AND IS_ACTIVE = #{is_active}
     </if>
-    <if test="relationCode != null and relationCode != ''">
-      AND RELATION_CODE = #{relationCode}
+    <if test="relation_code != null and relation_code != ''">
+      AND RELATION_CODE = #{relation_code}
     </if>
-    <if test="relationType != null and relationType != ''">
-      AND RELATION_TYPE = #{relationType}
+    <if test="relation_type != null and relation_type != ''">
+      AND RELATION_TYPE = #{relation_type}
     </if>
   </sql>
 
@@ -25,9 +25,9 @@
     <include refid="common.companyCodeFilter"/>
     <include refid="cascadingConditionSearchCondition"/>
     <choose>
-      <when test="sortColumn != null and sortColumn != ''">
+      <when test="sort_column != null and sort_column != ''">
         ORDER BY ${sortColumn}
-        <if test="sortDirection != null and sortDirection != ''">
+        <if test="sort_direction != null and sort_direction != ''">
           ${sortDirection}
         </if>
       </when>
@@ -49,7 +49,7 @@
   <select id="getCascadingConditionInfo" parameterType="map" resultType="map">
     SELECT *
     FROM CASCADING_CONDITION
-    WHERE CONDITION_ID = #{conditionId}
+    WHERE CONDITION_ID = #{condition_id}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -60,38 +60,38 @@
       FILTER_COLUMN, FILTER_VALUES, PRIORITY,
       COMPANY_CODE, IS_ACTIVE, CREATED_DATE
     ) VALUES (
-      COALESCE(#{relationType}, 'RELATION'), #{relationCode}, #{conditionName},
-      #{conditionField}, COALESCE(#{conditionOperator}, 'EQ'), #{conditionValue},
-      #{filterColumn}, #{filterValues}, COALESCE(#{priority}, 0),
-      #{companyCode}, COALESCE(#{isActive}, 'Y'), CURRENT_TIMESTAMP
+      COALESCE(#{relation_type}, 'RELATION'), #{relation_code}, #{condition_name},
+      #{condition_field}, COALESCE(#{condition_operator}, 'EQ'), #{condition_value},
+      #{filter_column}, #{filter_values}, COALESCE(#{priority}, 0),
+      #{company_code}, COALESCE(#{is_active}, 'Y'), CURRENT_TIMESTAMP
     )
   </insert>
 
   <update id="updateCascadingCondition" parameterType="map">
     UPDATE CASCADING_CONDITION SET
-      CONDITION_NAME     = COALESCE(#{conditionName},     CONDITION_NAME),
-      CONDITION_FIELD    = COALESCE(#{conditionField},    CONDITION_FIELD),
-      CONDITION_OPERATOR = COALESCE(#{conditionOperator}, CONDITION_OPERATOR),
-      CONDITION_VALUE    = COALESCE(#{conditionValue},    CONDITION_VALUE),
-      FILTER_COLUMN      = COALESCE(#{filterColumn},      FILTER_COLUMN),
-      FILTER_VALUES      = COALESCE(#{filterValues},      FILTER_VALUES),
+      CONDITION_NAME     = COALESCE(#{condition_name},     CONDITION_NAME),
+      CONDITION_FIELD    = COALESCE(#{condition_field},    CONDITION_FIELD),
+      CONDITION_OPERATOR = COALESCE(#{condition_operator}, CONDITION_OPERATOR),
+      CONDITION_VALUE    = COALESCE(#{condition_value},    CONDITION_VALUE),
+      FILTER_COLUMN      = COALESCE(#{filter_column},      FILTER_COLUMN),
+      FILTER_VALUES      = COALESCE(#{filter_values},      FILTER_VALUES),
       PRIORITY           = COALESCE(#{priority},          PRIORITY),
-      IS_ACTIVE          = COALESCE(#{isActive},          IS_ACTIVE),
+      IS_ACTIVE          = COALESCE(#{is_active},          IS_ACTIVE),
       UPDATED_DATE       = CURRENT_TIMESTAMP
-    WHERE CONDITION_ID = #{conditionId}
+    WHERE CONDITION_ID = #{condition_id}
     <include refid="common.companyCodeFilter"/>
   </update>
 
   <delete id="deleteCascadingCondition" parameterType="map">
     DELETE FROM CASCADING_CONDITION
-    WHERE CONDITION_ID = #{conditionId}
+    WHERE CONDITION_ID = #{condition_id}
     <include refid="common.companyCodeFilter"/>
   </delete>
 
   <select id="getCascadingConditionsByRelationCode" parameterType="map" resultType="map">
     SELECT *
     FROM CASCADING_CONDITION
-    WHERE RELATION_CODE = #{relationCode}
+    WHERE RELATION_CODE = #{relation_code}
       AND IS_ACTIVE = 'Y'
     <include refid="common.companyCodeFilter"/>
     ORDER BY PRIORITY DESC
diff --git a/backend-spring/src/main/resources/mapper/cascadingHierarchy.xml b/backend-spring/src/main/resources/mapper/cascadingHierarchy.xml
index a5bb9713..e5e83783 100644
--- a/backend-spring/src/main/resources/mapper/cascadingHierarchy.xml
+++ b/backend-spring/src/main/resources/mapper/cascadingHierarchy.xml
@@ -7,11 +7,11 @@
     <if test="keyword != null and keyword != ''">
       AND (G.GROUP_NAME ILIKE '%' || #{keyword} || '%')
     </if>
-    <if test="isActive != null and isActive != ''">
-      AND G.IS_ACTIVE = #{isActive}
+    <if test="is_active != null and is_active != ''">
+      AND G.IS_ACTIVE = #{is_active}
     </if>
-    <if test="hierarchyType != null and hierarchyType != ''">
-      AND G.HIERARCHY_TYPE = #{hierarchyType}
+    <if test="hierarchy_type != null and hierarchy_type != ''">
+      AND G.HIERARCHY_TYPE = #{hierarchy_type}
     </if>
   </sql>
 
@@ -22,8 +22,8 @@
        WHERE L.GROUP_CODE = G.GROUP_CODE AND L.COMPANY_CODE = G.COMPANY_CODE) AS LEVEL_COUNT
     FROM CASCADING_HIERARCHY_GROUP G
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (G.COMPANY_CODE = #{companyCode} OR G.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (G.COMPANY_CODE = #{company_code} OR G.COMPANY_CODE = '*')
     </if>
     <include refid="cascadingHierarchyGroupSearchCondition"/>
     ORDER BY G.GROUP_NAME
@@ -34,8 +34,8 @@
     SELECT COUNT(DISTINCT G.GROUP_ID)
     FROM CASCADING_HIERARCHY_GROUP G
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (G.COMPANY_CODE = #{companyCode} OR G.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (G.COMPANY_CODE = #{company_code} OR G.COMPANY_CODE = '*')
     </if>
     <include refid="cascadingHierarchyGroupSearchCondition"/>
   </select>
@@ -43,24 +43,24 @@
   <select id="getCascadingHierarchyGroupByCode" parameterType="map" resultType="map">
     SELECT *
     FROM CASCADING_HIERARCHY_GROUP
-    WHERE GROUP_CODE = #{groupCode}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE GROUP_CODE = #{group_code}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </select>
 
   <select id="getCascadingHierarchyGroupCount" parameterType="map" resultType="int">
     SELECT COUNT(*)
     FROM CASCADING_HIERARCHY_GROUP
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <select id="getCascadingHierarchyLevelList" parameterType="map" resultType="map">
     SELECT *
     FROM CASCADING_HIERARCHY_LEVEL
-    WHERE GROUP_CODE = #{groupCode}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE GROUP_CODE = #{group_code}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     ORDER BY LEVEL_ORDER
   </select>
@@ -68,9 +68,9 @@
   <select id="getCascadingHierarchyLevelInfo" parameterType="map" resultType="map">
     SELECT *
     FROM CASCADING_HIERARCHY_LEVEL
-    WHERE LEVEL_ID = #{levelId}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE LEVEL_ID = #{level_id}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </select>
 
@@ -79,11 +79,11 @@
     FROM CASCADING_HIERARCHY_LEVEL L
     JOIN CASCADING_HIERARCHY_GROUP G
       ON L.GROUP_CODE = G.GROUP_CODE AND L.COMPANY_CODE = G.COMPANY_CODE
-    WHERE L.GROUP_CODE = #{groupCode}
-      AND L.LEVEL_ORDER = #{levelOrder}
+    WHERE L.GROUP_CODE = #{group_code}
+      AND L.LEVEL_ORDER = #{level_order}
       AND L.IS_ACTIVE = 'Y'
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (L.COMPANY_CODE = #{companyCode} OR L.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (L.COMPANY_CODE = #{company_code} OR L.COMPANY_CODE = '*')
     </if>
   </select>
 
@@ -98,33 +98,33 @@
       EMPTY_MESSAGE, NO_OPTIONS_MESSAGE, LOADING_MESSAGE,
       COMPANY_CODE, IS_ACTIVE, CREATED_BY, CREATED_DATE
     ) VALUES (
-      #{groupCode},
-      #{groupName},
+      #{group_code},
+      #{group_name},
       #{description,         jdbcType=VARCHAR},
-      #{hierarchyType},
-      #{maxLevels,           jdbcType=INTEGER},
-      #{isFixedLevels,       jdbcType=VARCHAR},
-      #{selfRefTable,        jdbcType=VARCHAR},
-      #{selfRefIdColumn,     jdbcType=VARCHAR},
-      #{selfRefParentColumn, jdbcType=VARCHAR},
-      #{selfRefValueColumn,  jdbcType=VARCHAR},
-      #{selfRefLabelColumn,  jdbcType=VARCHAR},
-      #{selfRefLevelColumn,  jdbcType=VARCHAR},
-      #{selfRefOrderColumn,  jdbcType=VARCHAR},
-      #{bomTable,            jdbcType=VARCHAR},
-      #{bomParentColumn,     jdbcType=VARCHAR},
-      #{bomChildColumn,      jdbcType=VARCHAR},
-      #{bomItemTable,        jdbcType=VARCHAR},
-      #{bomItemIdColumn,     jdbcType=VARCHAR},
-      #{bomItemLabelColumn,  jdbcType=VARCHAR},
-      #{bomQtyColumn,        jdbcType=VARCHAR},
-      #{bomLevelColumn,      jdbcType=VARCHAR},
-      #{emptyMessage,        jdbcType=VARCHAR},
-      #{noOptionsMessage,    jdbcType=VARCHAR},
-      #{loadingMessage,      jdbcType=VARCHAR},
-      #{companyCode},
+      #{hierarchy_type},
+      #{max_levels,           jdbcType=INTEGER},
+      #{is_fixed_levels,       jdbcType=VARCHAR},
+      #{self_ref_table,        jdbcType=VARCHAR},
+      #{self_ref_id_column,     jdbcType=VARCHAR},
+      #{self_ref_parent_column, jdbcType=VARCHAR},
+      #{self_ref_value_column,  jdbcType=VARCHAR},
+      #{self_ref_label_column,  jdbcType=VARCHAR},
+      #{self_ref_level_column,  jdbcType=VARCHAR},
+      #{self_ref_order_column,  jdbcType=VARCHAR},
+      #{bom_table,            jdbcType=VARCHAR},
+      #{bom_parent_column,     jdbcType=VARCHAR},
+      #{bom_child_column,      jdbcType=VARCHAR},
+      #{bom_item_table,        jdbcType=VARCHAR},
+      #{bom_item_id_column,     jdbcType=VARCHAR},
+      #{bom_item_label_column,  jdbcType=VARCHAR},
+      #{bom_qty_column,        jdbcType=VARCHAR},
+      #{bom_level_column,      jdbcType=VARCHAR},
+      #{empty_message,        jdbcType=VARCHAR},
+      #{no_options_message,    jdbcType=VARCHAR},
+      #{loading_message,      jdbcType=VARCHAR},
+      #{company_code},
       'Y',
-      #{createdBy,           jdbcType=VARCHAR},
+      #{created_by,           jdbcType=VARCHAR},
       CURRENT_TIMESTAMP
     )
   </insert>
@@ -136,22 +136,22 @@
       FILTER_COLUMN, FILTER_VALUE, ORDER_COLUMN, ORDER_DIRECTION,
       PLACEHOLDER, IS_REQUIRED, IS_SEARCHABLE, IS_ACTIVE, CREATED_DATE
     ) VALUES (
-      #{groupCode},
-      #{companyCode},
-      #{levelOrder},
-      #{levelName},
-      #{levelCode,       jdbcType=VARCHAR},
-      #{tableName},
-      #{valueColumn},
-      #{labelColumn},
-      #{parentKeyColumn, jdbcType=VARCHAR},
-      #{filterColumn,    jdbcType=VARCHAR},
-      #{filterValue,     jdbcType=VARCHAR},
-      #{orderColumn,     jdbcType=VARCHAR},
-      #{orderDirection,  jdbcType=VARCHAR},
+      #{group_code},
+      #{company_code},
+      #{level_order},
+      #{level_name},
+      #{level_code,       jdbcType=VARCHAR},
+      #{table_name},
+      #{value_column},
+      #{label_column},
+      #{parent_key_column, jdbcType=VARCHAR},
+      #{filter_column,    jdbcType=VARCHAR},
+      #{filter_value,     jdbcType=VARCHAR},
+      #{order_column,     jdbcType=VARCHAR},
+      #{order_direction,  jdbcType=VARCHAR},
       #{placeholder,     jdbcType=VARCHAR},
-      #{isRequired,      jdbcType=VARCHAR},
-      #{isSearchable,    jdbcType=VARCHAR},
+      #{is_required,      jdbcType=VARCHAR},
+      #{is_searchable,    jdbcType=VARCHAR},
       'Y',
       CURRENT_TIMESTAMP
     )
@@ -159,60 +159,60 @@
 
   <update id="updateCascadingHierarchyGroup" parameterType="map">
     UPDATE CASCADING_HIERARCHY_GROUP SET
-      GROUP_NAME         = COALESCE(#{groupName,         jdbcType=VARCHAR}, GROUP_NAME),
+      GROUP_NAME         = COALESCE(#{group_name,         jdbcType=VARCHAR}, GROUP_NAME),
       DESCRIPTION        = COALESCE(#{description,       jdbcType=VARCHAR}, DESCRIPTION),
-      MAX_LEVELS         = COALESCE(#{maxLevels,         jdbcType=INTEGER}, MAX_LEVELS),
-      IS_FIXED_LEVELS    = COALESCE(#{isFixedLevels,     jdbcType=VARCHAR}, IS_FIXED_LEVELS),
-      EMPTY_MESSAGE      = COALESCE(#{emptyMessage,      jdbcType=VARCHAR}, EMPTY_MESSAGE),
-      NO_OPTIONS_MESSAGE = COALESCE(#{noOptionsMessage,  jdbcType=VARCHAR}, NO_OPTIONS_MESSAGE),
-      LOADING_MESSAGE    = COALESCE(#{loadingMessage,    jdbcType=VARCHAR}, LOADING_MESSAGE),
-      IS_ACTIVE          = COALESCE(#{isActive,          jdbcType=VARCHAR}, IS_ACTIVE),
-      UPDATED_BY         = #{updatedBy,                  jdbcType=VARCHAR},
+      MAX_LEVELS         = COALESCE(#{max_levels,         jdbcType=INTEGER}, MAX_LEVELS),
+      IS_FIXED_LEVELS    = COALESCE(#{is_fixed_levels,     jdbcType=VARCHAR}, IS_FIXED_LEVELS),
+      EMPTY_MESSAGE      = COALESCE(#{empty_message,      jdbcType=VARCHAR}, EMPTY_MESSAGE),
+      NO_OPTIONS_MESSAGE = COALESCE(#{no_options_message,  jdbcType=VARCHAR}, NO_OPTIONS_MESSAGE),
+      LOADING_MESSAGE    = COALESCE(#{loading_message,    jdbcType=VARCHAR}, LOADING_MESSAGE),
+      IS_ACTIVE          = COALESCE(#{is_active,          jdbcType=VARCHAR}, IS_ACTIVE),
+      UPDATED_BY         = #{updated_by,                  jdbcType=VARCHAR},
       UPDATED_DATE       = CURRENT_TIMESTAMP
-    WHERE GROUP_CODE = #{groupCode}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE GROUP_CODE = #{group_code}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <update id="updateCascadingHierarchyLevel" parameterType="map">
     UPDATE CASCADING_HIERARCHY_LEVEL SET
-      LEVEL_NAME        = COALESCE(#{levelName,        jdbcType=VARCHAR}, LEVEL_NAME),
-      TABLE_NAME        = COALESCE(#{tableName,        jdbcType=VARCHAR}, TABLE_NAME),
-      VALUE_COLUMN      = COALESCE(#{valueColumn,      jdbcType=VARCHAR}, VALUE_COLUMN),
-      LABEL_COLUMN      = COALESCE(#{labelColumn,      jdbcType=VARCHAR}, LABEL_COLUMN),
-      PARENT_KEY_COLUMN = COALESCE(#{parentKeyColumn,  jdbcType=VARCHAR}, PARENT_KEY_COLUMN),
-      FILTER_COLUMN     = COALESCE(#{filterColumn,     jdbcType=VARCHAR}, FILTER_COLUMN),
-      FILTER_VALUE      = COALESCE(#{filterValue,      jdbcType=VARCHAR}, FILTER_VALUE),
-      ORDER_COLUMN      = COALESCE(#{orderColumn,      jdbcType=VARCHAR}, ORDER_COLUMN),
-      ORDER_DIRECTION   = COALESCE(#{orderDirection,   jdbcType=VARCHAR}, ORDER_DIRECTION),
+      LEVEL_NAME        = COALESCE(#{level_name,        jdbcType=VARCHAR}, LEVEL_NAME),
+      TABLE_NAME        = COALESCE(#{table_name,        jdbcType=VARCHAR}, TABLE_NAME),
+      VALUE_COLUMN      = COALESCE(#{value_column,      jdbcType=VARCHAR}, VALUE_COLUMN),
+      LABEL_COLUMN      = COALESCE(#{label_column,      jdbcType=VARCHAR}, LABEL_COLUMN),
+      PARENT_KEY_COLUMN = COALESCE(#{parent_key_column,  jdbcType=VARCHAR}, PARENT_KEY_COLUMN),
+      FILTER_COLUMN     = COALESCE(#{filter_column,     jdbcType=VARCHAR}, FILTER_COLUMN),
+      FILTER_VALUE      = COALESCE(#{filter_value,      jdbcType=VARCHAR}, FILTER_VALUE),
+      ORDER_COLUMN      = COALESCE(#{order_column,      jdbcType=VARCHAR}, ORDER_COLUMN),
+      ORDER_DIRECTION   = COALESCE(#{order_direction,   jdbcType=VARCHAR}, ORDER_DIRECTION),
       PLACEHOLDER       = COALESCE(#{placeholder,      jdbcType=VARCHAR}, PLACEHOLDER),
-      IS_REQUIRED       = COALESCE(#{isRequired,       jdbcType=VARCHAR}, IS_REQUIRED),
-      IS_SEARCHABLE     = COALESCE(#{isSearchable,     jdbcType=VARCHAR}, IS_SEARCHABLE),
-      IS_ACTIVE         = COALESCE(#{isActive,         jdbcType=VARCHAR}, IS_ACTIVE),
+      IS_REQUIRED       = COALESCE(#{is_required,       jdbcType=VARCHAR}, IS_REQUIRED),
+      IS_SEARCHABLE     = COALESCE(#{is_searchable,     jdbcType=VARCHAR}, IS_SEARCHABLE),
+      IS_ACTIVE         = COALESCE(#{is_active,         jdbcType=VARCHAR}, IS_ACTIVE),
       UPDATED_DATE      = CURRENT_TIMESTAMP
-    WHERE LEVEL_ID = #{levelId}
+    WHERE LEVEL_ID = #{level_id}
   </update>
 
   <delete id="deleteCascadingHierarchyLevels" parameterType="map">
     DELETE FROM CASCADING_HIERARCHY_LEVEL
-    WHERE GROUP_CODE = #{groupCode}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE GROUP_CODE = #{group_code}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
   <delete id="deleteCascadingHierarchyLevel" parameterType="map">
     DELETE FROM CASCADING_HIERARCHY_LEVEL
-    WHERE LEVEL_ID = #{levelId}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE LEVEL_ID = #{level_id}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
   <delete id="deleteCascadingHierarchyGroup" parameterType="map">
     DELETE FROM CASCADING_HIERARCHY_GROUP
-    WHERE GROUP_CODE = #{groupCode}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE GROUP_CODE = #{group_code}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
diff --git a/backend-spring/src/main/resources/mapper/cascadingMutualExclusion.xml b/backend-spring/src/main/resources/mapper/cascadingMutualExclusion.xml
index 25d47f3d..246396db 100644
--- a/backend-spring/src/main/resources/mapper/cascadingMutualExclusion.xml
+++ b/backend-spring/src/main/resources/mapper/cascadingMutualExclusion.xml
@@ -4,8 +4,8 @@
 <mapper namespace="cascadingMutualExclusion">
 
   <sql id="cascadingMutualExclusionSearchCondition">
-    <if test="isActive != null and isActive != ''">
-      AND IS_ACTIVE = #{isActive}
+    <if test="is_active != null and is_active != ''">
+      AND IS_ACTIVE = #{is_active}
     </if>
     <if test="keyword != null and keyword != ''">
       AND EXCLUSION_NAME ILIKE '%' || #{keyword} || '%'
@@ -88,7 +88,7 @@
     SELECT
         COUNT(*)
     FROM CASCADING_MUTUAL_EXCLUSION
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <insert id="insertCascadingMutualExclusion" parameterType="map"
@@ -106,15 +106,15 @@
         , IS_ACTIVE
         , CREATED_DATE
     ) VALUES (
-        #{exclusionCode,   jdbcType=VARCHAR}
-        , #{exclusionName,   jdbcType=VARCHAR}
-        , #{fieldNames,      jdbcType=VARCHAR}
-        , #{sourceTable,     jdbcType=VARCHAR}
-        , #{valueColumn,     jdbcType=VARCHAR}
-        , #{labelColumn,     jdbcType=VARCHAR}
-        , #{exclusionType,   jdbcType=VARCHAR}
-        , #{errorMessage,    jdbcType=VARCHAR}
-        , #{companyCode}
+        #{exclusion_code,   jdbcType=VARCHAR}
+        , #{exclusion_name,   jdbcType=VARCHAR}
+        , #{field_names,      jdbcType=VARCHAR}
+        , #{source_table,     jdbcType=VARCHAR}
+        , #{value_column,     jdbcType=VARCHAR}
+        , #{label_column,     jdbcType=VARCHAR}
+        , #{exclusion_type,   jdbcType=VARCHAR}
+        , #{error_message,    jdbcType=VARCHAR}
+        , #{company_code}
         , 'Y'
         , CURRENT_TIMESTAMP
     )
@@ -123,14 +123,14 @@
   <update id="updateCascadingMutualExclusion" parameterType="map">
     UPDATE CASCADING_MUTUAL_EXCLUSION
     SET
-        EXCLUSION_NAME = COALESCE(#{exclusionName,  jdbcType=VARCHAR}, EXCLUSION_NAME)
-        , FIELD_NAMES    = COALESCE(#{fieldNames,     jdbcType=VARCHAR}, FIELD_NAMES)
-        , SOURCE_TABLE   = COALESCE(#{sourceTable,    jdbcType=VARCHAR}, SOURCE_TABLE)
-        , VALUE_COLUMN   = COALESCE(#{valueColumn,    jdbcType=VARCHAR}, VALUE_COLUMN)
-        , LABEL_COLUMN   = COALESCE(#{labelColumn,    jdbcType=VARCHAR}, LABEL_COLUMN)
-        , EXCLUSION_TYPE = COALESCE(#{exclusionType,  jdbcType=VARCHAR}, EXCLUSION_TYPE)
-        , ERROR_MESSAGE  = COALESCE(#{errorMessage,   jdbcType=VARCHAR}, ERROR_MESSAGE)
-        , IS_ACTIVE      = COALESCE(#{isActive,       jdbcType=VARCHAR}, IS_ACTIVE)
+        EXCLUSION_NAME = COALESCE(#{exclusion_name,  jdbcType=VARCHAR}, EXCLUSION_NAME)
+        , FIELD_NAMES    = COALESCE(#{field_names,     jdbcType=VARCHAR}, FIELD_NAMES)
+        , SOURCE_TABLE   = COALESCE(#{source_table,    jdbcType=VARCHAR}, SOURCE_TABLE)
+        , VALUE_COLUMN   = COALESCE(#{value_column,    jdbcType=VARCHAR}, VALUE_COLUMN)
+        , LABEL_COLUMN   = COALESCE(#{label_column,    jdbcType=VARCHAR}, LABEL_COLUMN)
+        , EXCLUSION_TYPE = COALESCE(#{exclusion_type,  jdbcType=VARCHAR}, EXCLUSION_TYPE)
+        , ERROR_MESSAGE  = COALESCE(#{error_message,   jdbcType=VARCHAR}, ERROR_MESSAGE)
+        , IS_ACTIVE      = COALESCE(#{is_active,       jdbcType=VARCHAR}, IS_ACTIVE)
     WHERE EXCLUSION_ID = #{id}
     <include refid="common.companyCodeFilter"/>
   </update>
diff --git a/backend-spring/src/main/resources/mapper/cascadingRelation.xml b/backend-spring/src/main/resources/mapper/cascadingRelation.xml
index 84632ade..e6d186b4 100644
--- a/backend-spring/src/main/resources/mapper/cascadingRelation.xml
+++ b/backend-spring/src/main/resources/mapper/cascadingRelation.xml
@@ -30,8 +30,8 @@
   </sql>
 
   <sql id="cascadingRelationSearchCondition">
-    <if test="isActive != null and isActive != ''">
-      AND IS_ACTIVE = #{isActive}
+    <if test="is_active != null and is_active != ''">
+      AND IS_ACTIVE = #{is_active}
     </if>
     <if test="keyword != null and keyword != ''">
       AND (RELATION_NAME ILIKE '%' || #{keyword} || '%'
@@ -98,25 +98,25 @@
         , CREATED_BY
         , CREATED_DATE
     ) VALUES (
-        #{relationCode,          jdbcType=VARCHAR}
-        , #{relationName,          jdbcType=VARCHAR}
+        #{relation_code,          jdbcType=VARCHAR}
+        , #{relation_name,          jdbcType=VARCHAR}
         , #{description,           jdbcType=VARCHAR}
-        , #{parentTable,           jdbcType=VARCHAR}
-        , #{parentValueColumn,     jdbcType=VARCHAR}
-        , #{parentLabelColumn,     jdbcType=VARCHAR}
-        , #{childTable,            jdbcType=VARCHAR}
-        , #{childFilterColumn,     jdbcType=VARCHAR}
-        , #{childValueColumn,      jdbcType=VARCHAR}
-        , #{childLabelColumn,      jdbcType=VARCHAR}
-        , #{childOrderColumn,      jdbcType=VARCHAR}
-        , #{childOrderDirection,   jdbcType=VARCHAR}
-        , #{emptyParentMessage,    jdbcType=VARCHAR}
-        , #{noOptionsMessage,      jdbcType=VARCHAR}
-        , #{loadingMessage,        jdbcType=VARCHAR}
-        , #{clearOnParentChange,   jdbcType=VARCHAR}
-        , #{companyCode}
-        , #{isActive,              jdbcType=VARCHAR}
-        , #{userId,                jdbcType=VARCHAR}
+        , #{parent_table,           jdbcType=VARCHAR}
+        , #{parent_value_column,     jdbcType=VARCHAR}
+        , #{parent_label_column,     jdbcType=VARCHAR}
+        , #{child_table,            jdbcType=VARCHAR}
+        , #{child_filter_column,     jdbcType=VARCHAR}
+        , #{child_value_column,      jdbcType=VARCHAR}
+        , #{child_label_column,      jdbcType=VARCHAR}
+        , #{child_order_column,      jdbcType=VARCHAR}
+        , #{child_order_direction,   jdbcType=VARCHAR}
+        , #{empty_parent_message,    jdbcType=VARCHAR}
+        , #{no_options_message,      jdbcType=VARCHAR}
+        , #{loading_message,        jdbcType=VARCHAR}
+        , #{clear_on_parent_change,   jdbcType=VARCHAR}
+        , #{company_code}
+        , #{is_active,              jdbcType=VARCHAR}
+        , #{user_id,                jdbcType=VARCHAR}
         , CURRENT_TIMESTAMP
     )
   </insert>
@@ -124,23 +124,23 @@
   <update id="updateCascadingRelation" parameterType="map">
     UPDATE CASCADING_RELATION
     SET
-        RELATION_NAME          = COALESCE(#{relationName,         jdbcType=VARCHAR}, RELATION_NAME)
+        RELATION_NAME          = COALESCE(#{relation_name,         jdbcType=VARCHAR}, RELATION_NAME)
         , DESCRIPTION            = COALESCE(#{description,          jdbcType=VARCHAR}, DESCRIPTION)
-        , PARENT_TABLE           = COALESCE(#{parentTable,          jdbcType=VARCHAR}, PARENT_TABLE)
-        , PARENT_VALUE_COLUMN    = COALESCE(#{parentValueColumn,    jdbcType=VARCHAR}, PARENT_VALUE_COLUMN)
-        , PARENT_LABEL_COLUMN    = COALESCE(#{parentLabelColumn,    jdbcType=VARCHAR}, PARENT_LABEL_COLUMN)
-        , CHILD_TABLE            = COALESCE(#{childTable,           jdbcType=VARCHAR}, CHILD_TABLE)
-        , CHILD_FILTER_COLUMN    = COALESCE(#{childFilterColumn,    jdbcType=VARCHAR}, CHILD_FILTER_COLUMN)
-        , CHILD_VALUE_COLUMN     = COALESCE(#{childValueColumn,     jdbcType=VARCHAR}, CHILD_VALUE_COLUMN)
-        , CHILD_LABEL_COLUMN     = COALESCE(#{childLabelColumn,     jdbcType=VARCHAR}, CHILD_LABEL_COLUMN)
-        , CHILD_ORDER_COLUMN     = COALESCE(#{childOrderColumn,     jdbcType=VARCHAR}, CHILD_ORDER_COLUMN)
-        , CHILD_ORDER_DIRECTION  = COALESCE(#{childOrderDirection,  jdbcType=VARCHAR}, CHILD_ORDER_DIRECTION)
-        , EMPTY_PARENT_MESSAGE   = COALESCE(#{emptyParentMessage,   jdbcType=VARCHAR}, EMPTY_PARENT_MESSAGE)
-        , NO_OPTIONS_MESSAGE     = COALESCE(#{noOptionsMessage,     jdbcType=VARCHAR}, NO_OPTIONS_MESSAGE)
-        , LOADING_MESSAGE        = COALESCE(#{loadingMessage,       jdbcType=VARCHAR}, LOADING_MESSAGE)
-        , CLEAR_ON_PARENT_CHANGE = COALESCE(#{clearOnParentChange,  jdbcType=VARCHAR}, CLEAR_ON_PARENT_CHANGE)
-        , IS_ACTIVE              = COALESCE(#{isActive,             jdbcType=VARCHAR}, IS_ACTIVE)
-        , UPDATED_BY             = #{userId,   jdbcType=VARCHAR}
+        , PARENT_TABLE           = COALESCE(#{parent_table,          jdbcType=VARCHAR}, PARENT_TABLE)
+        , PARENT_VALUE_COLUMN    = COALESCE(#{parent_value_column,    jdbcType=VARCHAR}, PARENT_VALUE_COLUMN)
+        , PARENT_LABEL_COLUMN    = COALESCE(#{parent_label_column,    jdbcType=VARCHAR}, PARENT_LABEL_COLUMN)
+        , CHILD_TABLE            = COALESCE(#{child_table,           jdbcType=VARCHAR}, CHILD_TABLE)
+        , CHILD_FILTER_COLUMN    = COALESCE(#{child_filter_column,    jdbcType=VARCHAR}, CHILD_FILTER_COLUMN)
+        , CHILD_VALUE_COLUMN     = COALESCE(#{child_value_column,     jdbcType=VARCHAR}, CHILD_VALUE_COLUMN)
+        , CHILD_LABEL_COLUMN     = COALESCE(#{child_label_column,     jdbcType=VARCHAR}, CHILD_LABEL_COLUMN)
+        , CHILD_ORDER_COLUMN     = COALESCE(#{child_order_column,     jdbcType=VARCHAR}, CHILD_ORDER_COLUMN)
+        , CHILD_ORDER_DIRECTION  = COALESCE(#{child_order_direction,  jdbcType=VARCHAR}, CHILD_ORDER_DIRECTION)
+        , EMPTY_PARENT_MESSAGE   = COALESCE(#{empty_parent_message,   jdbcType=VARCHAR}, EMPTY_PARENT_MESSAGE)
+        , NO_OPTIONS_MESSAGE     = COALESCE(#{no_options_message,     jdbcType=VARCHAR}, NO_OPTIONS_MESSAGE)
+        , LOADING_MESSAGE        = COALESCE(#{loading_message,       jdbcType=VARCHAR}, LOADING_MESSAGE)
+        , CLEAR_ON_PARENT_CHANGE = COALESCE(#{clear_on_parent_change,  jdbcType=VARCHAR}, CLEAR_ON_PARENT_CHANGE)
+        , IS_ACTIVE              = COALESCE(#{is_active,             jdbcType=VARCHAR}, IS_ACTIVE)
+        , UPDATED_BY             = #{user_id,   jdbcType=VARCHAR}
         , UPDATED_DATE           = CURRENT_TIMESTAMP
     WHERE RELATION_ID = #{id}
     <include refid="common.companyCodeFilter"/>
@@ -151,7 +151,7 @@
     UPDATE CASCADING_RELATION
     SET
         IS_ACTIVE    = 'N'
-        , UPDATED_BY   = #{userId,  jdbcType=VARCHAR}
+        , UPDATED_BY   = #{user_id,  jdbcType=VARCHAR}
         , UPDATED_DATE = CURRENT_TIMESTAMP
     WHERE RELATION_ID = #{id}
     <include refid="common.companyCodeFilter"/>
diff --git a/backend-spring/src/main/resources/mapper/categoryTree.xml b/backend-spring/src/main/resources/mapper/categoryTree.xml
index dc65a051..0aca88cb 100644
--- a/backend-spring/src/main/resources/mapper/categoryTree.xml
+++ b/backend-spring/src/main/resources/mapper/categoryTree.xml
@@ -18,9 +18,9 @@
 
     FROM category_values
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
-      AND table_name  = #{tableName}
-      AND column_name = #{columnName}
+    WHERE (company_code = #{company_code} OR company_code = '*')
+      AND table_name  = #{table_name}
+      AND column_name = #{column_name}
 
     ORDER BY depth ASC, value_order ASC, value_label ASC
   </select>
@@ -32,8 +32,8 @@
 
     FROM category_values
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
-      AND value_id = #{valueId}
+    WHERE (company_code = #{company_code} OR company_code = '*')
+      AND value_id = #{value_id}
   </select>
 
   <!-- 카테고리 값 생성 -->
@@ -44,9 +44,9 @@
       parent_value_id, depth, path, description, color, icon,
       is_active, is_default, company_code, created_by, updated_by
     ) VALUES (
-      #{tableName}, #{columnName}, #{valueCode}, #{valueLabel}, #{valueOrder},
-      #{parentValueId}, #{depth}, #{path}, #{description}, #{color}, #{icon},
-      #{isActive}, #{isDefault}, #{companyCode}, #{createdBy}, #{createdBy}
+      #{table_name}, #{column_name}, #{value_code}, #{value_label}, #{value_order},
+      #{parent_value_id}, #{depth}, #{path}, #{description}, #{color}, #{icon},
+      #{is_active}, #{is_default}, #{company_code}, #{created_by}, #{created_by}
     )
   </insert>
 
@@ -54,38 +54,38 @@
   <update id="updateCategoryTree" parameterType="map">
     UPDATE category_values
     SET
-      value_code      = COALESCE(#{valueCode},    value_code),
-      value_label     = COALESCE(#{valueLabel},   value_label),
-      value_order     = COALESCE(#{valueOrder},   value_order),
-      parent_value_id = #{parentValueId},
+      value_code      = COALESCE(#{value_code},    value_code),
+      value_label     = COALESCE(#{value_label},   value_label),
+      value_order     = COALESCE(#{value_order},   value_order),
+      parent_value_id = #{parent_value_id},
       depth           = #{depth},
       path            = #{path},
       description     = COALESCE(#{description},  description),
       color           = COALESCE(#{color},         color),
       icon            = COALESCE(#{icon},          icon),
-      is_active       = COALESCE(#{isActive},      is_active),
-      is_default      = COALESCE(#{isDefault},     is_default),
+      is_active       = COALESCE(#{is_active},      is_active),
+      is_default      = COALESCE(#{is_default},     is_default),
       UPDATED_DATE      = NOW(),
-      updated_by      = #{updatedBy}
+      updated_by      = #{updated_by}
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
-      AND value_id = #{valueId}
+    WHERE (company_code = #{company_code} OR company_code = '*')
+      AND value_id = #{value_id}
   </update>
 
   <!-- 카테고리 값 삭제 -->
   <delete id="deleteCategoryTree" parameterType="map">
     DELETE FROM category_values
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
-      AND value_id = #{valueId}
+    WHERE (company_code = #{company_code} OR company_code = '*')
+      AND value_id = #{value_id}
   </delete>
 
   <!-- 자식 카테고리 수 조회 -->
   <select id="getCategoryTreeChildrenCnt" parameterType="map" resultType="int">
     SELECT COUNT(*) FROM category_values
 
-    WHERE parent_value_id = #{valueId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE parent_value_id = #{value_id}
+      AND (company_code = #{company_code} OR company_code = '*')
   </select>
 
   <!-- 테이블 존재 여부 확인 (0 또는 1 반환) -->
@@ -93,7 +93,7 @@
     SELECT COUNT(*) FROM information_schema.tables
 
     WHERE table_schema = 'public'
-      AND table_name = #{tableName}
+      AND table_name = #{table_name}
   </select>
 
   <!-- 컬럼 존재 여부 확인 (0 또는 1 반환) -->
@@ -101,8 +101,8 @@
     SELECT COUNT(*) FROM information_schema.columns
 
     WHERE table_schema = 'public'
-      AND table_name  = #{tableName}
-      AND column_name = #{columnName}
+      AND table_name  = #{table_name}
+      AND column_name = #{column_name}
   </select>
 
   <!-- 카테고리 값 사용 건수 조회 (company_code 필터 포함) -->
@@ -110,9 +110,9 @@
     <![CDATA[
     SELECT COUNT(*) FROM "${tableName}"
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
-      AND (#{valueCode} = ANY(string_to_array("${columnName}"::text, ','))
-           OR "${columnName}"::text = #{valueCode})
+    WHERE (company_code = #{company_code} OR company_code = '*')
+      AND (#{value_code} = ANY(string_to_array("${columnName}"::text, ','))
+           OR "${columnName}"::text = #{value_code})
     ]]>
   </select>
 
@@ -121,8 +121,8 @@
     <![CDATA[
     SELECT COUNT(*) FROM "${tableName}"
 
-    WHERE #{valueCode} = ANY(string_to_array("${columnName}"::text, ','))
-       OR "${columnName}"::text = #{valueCode}
+    WHERE #{value_code} = ANY(string_to_array("${columnName}"::text, ','))
+       OR "${columnName}"::text = #{value_code}
     ]]>
   </select>
 
@@ -132,8 +132,8 @@
 
     FROM category_values
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
-      AND parent_value_id = #{parentValueId}
+    WHERE (company_code = #{company_code} OR company_code = '*')
+      AND parent_value_id = #{parent_value_id}
   </select>
 
   <!-- 자식 path 단건 업데이트 -->
@@ -141,7 +141,7 @@
     UPDATE category_values
     SET path = #{path}, UPDATED_DATE = NOW()
 
-    WHERE value_id = #{valueId}
+    WHERE value_id = #{value_id}
   </update>
 
   <!-- 테이블의 카테고리 컬럼 목록 조회 -->
@@ -150,9 +150,9 @@
 
     FROM table_type_columns
 
-    WHERE table_name  = #{tableName}
+    WHERE table_name  = #{table_name}
       AND input_type  = 'category'
-      AND (company_code = #{companyCode} OR company_code = '*')
+      AND (company_code = #{company_code} OR company_code = '*')
 
     ORDER BY column_name
   </select>
@@ -173,7 +173,7 @@
                                      AND ttc.column_name = cv.column_name
                                      AND ttc.company_code = '*'
 
-    WHERE (cv.company_code = #{companyCode} OR cv.company_code = '*')
+    WHERE (cv.company_code = #{company_code} OR cv.company_code = '*')
        OR cv.company_code = '*'
 
     ORDER BY cv.table_name, cv.column_name
diff --git a/backend-spring/src/main/resources/mapper/categoryValueCascading.xml b/backend-spring/src/main/resources/mapper/categoryValueCascading.xml
index ea2e6c97..0716c2b7 100644
--- a/backend-spring/src/main/resources/mapper/categoryValueCascading.xml
+++ b/backend-spring/src/main/resources/mapper/categoryValueCascading.xml
@@ -7,8 +7,8 @@
     <if test="keyword != null and keyword != ''">
       AND (RELATION_NAME ILIKE '%' || #{keyword} || '%' OR RELATION_CODE ILIKE '%' || #{keyword} || '%')
     </if>
-    <if test="isActive != null and isActive != ''">
-      AND IS_ACTIVE = #{isActive}
+    <if test="is_active != null and is_active != ''">
+      AND IS_ACTIVE = #{is_active}
     </if>
   </sql>
 
@@ -20,9 +20,9 @@
     <include refid="common.companyCodeFilter"/>
     <include refid="groupSearchCondition"/>
     <choose>
-      <when test="sortColumn != null and sortColumn != ''">
+      <when test="sort_column != null and sort_column != ''">
         ORDER BY ${sortColumn}
-        <if test="sortDirection != null and sortDirection != ''">
+        <if test="sort_direction != null and sort_direction != ''">
           ${sortDirection}
         </if>
       </when>
@@ -46,7 +46,7 @@
     SELECT
         *
     FROM CATEGORY_VALUE_CASCADING_GROUP
-    WHERE GROUP_ID = #{groupId}
+    WHERE GROUP_ID = #{group_id}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -80,22 +80,22 @@
         , CREATED_BY
         , CREATED_DATE
     ) VALUES (
-        #{relationCode}
-        , #{relationName}
+        #{relation_code}
+        , #{relation_name}
         , #{description}
-        , #{parentTableName}
-        , #{parentColumnName}
-        , #{parentMenuObjid}
-        , #{childTableName}
-        , #{childColumnName}
-        , #{childMenuObjid}
-        , COALESCE(#{clearOnParentChange}, 'Y')
-        , COALESCE(#{showGroupLabel}, 'Y')
-        , COALESCE(#{emptyParentMessage}, '상위 항목을 먼저 선택하세요')
-        , COALESCE(#{noOptionsMessage}, '선택 가능한 항목이 없습니다')
-        , #{companyCode}
+        , #{parent_table_name}
+        , #{parent_column_name}
+        , #{parent_menu_objid}
+        , #{child_table_name}
+        , #{child_column_name}
+        , #{child_menu_objid}
+        , COALESCE(#{clear_on_parent_change}, 'Y')
+        , COALESCE(#{show_group_label}, 'Y')
+        , COALESCE(#{empty_parent_message}, '상위 항목을 먼저 선택하세요')
+        , COALESCE(#{no_options_message}, '선택 가능한 항목이 없습니다')
+        , #{company_code}
         , 'Y'
-        , #{createdBy}
+        , #{created_by}
         , NOW()
     )
   </insert>
@@ -103,22 +103,22 @@
   <update id="updateCategoryValueCascadingGroup" parameterType="map">
     UPDATE CATEGORY_VALUE_CASCADING_GROUP
     SET
-        RELATION_NAME          = COALESCE(#{relationName},          RELATION_NAME)
+        RELATION_NAME          = COALESCE(#{relation_name},          RELATION_NAME)
         , DESCRIPTION            = COALESCE(#{description},           DESCRIPTION)
-        , PARENT_TABLE_NAME      = COALESCE(#{parentTableName},       PARENT_TABLE_NAME)
-        , PARENT_COLUMN_NAME     = COALESCE(#{parentColumnName},      PARENT_COLUMN_NAME)
-        , PARENT_MENU_OBJID      = COALESCE(#{parentMenuObjid},       PARENT_MENU_OBJID)
-        , CHILD_TABLE_NAME       = COALESCE(#{childTableName},        CHILD_TABLE_NAME)
-        , CHILD_COLUMN_NAME      = COALESCE(#{childColumnName},       CHILD_COLUMN_NAME)
-        , CHILD_MENU_OBJID       = COALESCE(#{childMenuObjid},        CHILD_MENU_OBJID)
-        , CLEAR_ON_PARENT_CHANGE = COALESCE(#{clearOnParentChange},   CLEAR_ON_PARENT_CHANGE)
-        , SHOW_GROUP_LABEL       = COALESCE(#{showGroupLabel},        SHOW_GROUP_LABEL)
-        , EMPTY_PARENT_MESSAGE   = COALESCE(#{emptyParentMessage},    EMPTY_PARENT_MESSAGE)
-        , NO_OPTIONS_MESSAGE     = COALESCE(#{noOptionsMessage},      NO_OPTIONS_MESSAGE)
-        , IS_ACTIVE              = COALESCE(#{isActive},              IS_ACTIVE)
-        , UPDATED_BY             = #{updatedBy}
+        , PARENT_TABLE_NAME      = COALESCE(#{parent_table_name},       PARENT_TABLE_NAME)
+        , PARENT_COLUMN_NAME     = COALESCE(#{parent_column_name},      PARENT_COLUMN_NAME)
+        , PARENT_MENU_OBJID      = COALESCE(#{parent_menu_objid},       PARENT_MENU_OBJID)
+        , CHILD_TABLE_NAME       = COALESCE(#{child_table_name},        CHILD_TABLE_NAME)
+        , CHILD_COLUMN_NAME      = COALESCE(#{child_column_name},       CHILD_COLUMN_NAME)
+        , CHILD_MENU_OBJID       = COALESCE(#{child_menu_objid},        CHILD_MENU_OBJID)
+        , CLEAR_ON_PARENT_CHANGE = COALESCE(#{clear_on_parent_change},   CLEAR_ON_PARENT_CHANGE)
+        , SHOW_GROUP_LABEL       = COALESCE(#{show_group_label},        SHOW_GROUP_LABEL)
+        , EMPTY_PARENT_MESSAGE   = COALESCE(#{empty_parent_message},    EMPTY_PARENT_MESSAGE)
+        , NO_OPTIONS_MESSAGE     = COALESCE(#{no_options_message},      NO_OPTIONS_MESSAGE)
+        , IS_ACTIVE              = COALESCE(#{is_active},              IS_ACTIVE)
+        , UPDATED_BY             = #{updated_by}
         , UPDATED_DATE           = NOW()
-    WHERE GROUP_ID = #{groupId}
+    WHERE GROUP_ID = #{group_id}
     <include refid="common.companyCodeFilter"/>
   </update>
 
@@ -126,9 +126,9 @@
     UPDATE CATEGORY_VALUE_CASCADING_GROUP
     SET
         IS_ACTIVE    = 'N'
-        , UPDATED_BY   = #{updatedBy}
+        , UPDATED_BY   = #{updated_by}
         , UPDATED_DATE = NOW()
-    WHERE GROUP_ID = #{groupId}
+    WHERE GROUP_ID = #{group_id}
     <include refid="common.companyCodeFilter"/>
   </update>
 
@@ -142,14 +142,14 @@
         , DISPLAY_ORDER
         , IS_ACTIVE
     FROM CATEGORY_VALUE_CASCADING_MAPPING
-    WHERE GROUP_ID = #{groupId}
+    WHERE GROUP_ID = #{group_id}
       AND IS_ACTIVE = 'Y'
     ORDER BY PARENT_VALUE_CODE, DISPLAY_ORDER, CHILD_VALUE_LABEL
   </select>
 
   <delete id="deleteCategoryValueCascadingMappingsByGroupId" parameterType="map">
     DELETE FROM CATEGORY_VALUE_CASCADING_MAPPING
-    WHERE GROUP_ID = #{groupId}
+    WHERE GROUP_ID = #{group_id}
   </delete>
 
   <insert id="insertCategoryValueCascadingMapping" parameterType="map" useGeneratedKeys="true" keyProperty="mappingId">
@@ -164,13 +164,13 @@
         , IS_ACTIVE
         , CREATED_DATE
     ) VALUES (
-        #{groupId}
-        , #{parentValueCode}
-        , #{parentValueLabel}
-        , #{childValueCode}
-        , #{childValueLabel}
-        , COALESCE(#{displayOrder}, 0)
-        , #{companyCode}
+        #{group_id}
+        , #{parent_value_code}
+        , #{parent_value_label}
+        , #{child_value_code}
+        , #{child_value_label}
+        , COALESCE(#{display_order}, 0)
+        , #{company_code}
         , 'Y'
         , NOW()
     )
diff --git a/backend-spring/src/main/resources/mapper/codeMerge.xml b/backend-spring/src/main/resources/mapper/codeMerge.xml
index e6362027..efac5d45 100644
--- a/backend-spring/src/main/resources/mapper/codeMerge.xml
+++ b/backend-spring/src/main/resources/mapper/codeMerge.xml
@@ -15,7 +15,7 @@
     JOIN information_schema.tables t
       ON c.table_name = t.table_name
 
-    WHERE c.column_name = #{columnName}
+    WHERE c.column_name = #{column_name}
       AND t.table_schema = 'public'
       AND t.table_type = 'BASE TABLE'
       AND EXISTS (
diff --git a/backend-spring/src/main/resources/mapper/collection.xml b/backend-spring/src/main/resources/mapper/collection.xml
index 591cb8aa..df0d06f8 100644
--- a/backend-spring/src/main/resources/mapper/collection.xml
+++ b/backend-spring/src/main/resources/mapper/collection.xml
@@ -4,17 +4,17 @@
 <mapper namespace="collection">
 
   <sql id="collectionSearchCondition">
-    <if test="configName != null and configName != ''">
-      AND CONFIG_NAME ILIKE '%' || #{configName} || '%'
+    <if test="config_name != null and config_name != ''">
+      AND CONFIG_NAME ILIKE '%' || #{config_name} || '%'
     </if>
-    <if test="sourceConnectionId != null and sourceConnectionId != ''">
-      AND SOURCE_CONNECTION_ID = #{sourceConnectionId}
+    <if test="source_connection_id != null and source_connection_id != ''">
+      AND SOURCE_CONNECTION_ID = #{source_connection_id}
     </if>
-    <if test="collectionType != null and collectionType != ''">
-      AND COLLECTION_TYPE = #{collectionType}
+    <if test="collection_type != null and collection_type != ''">
+      AND COLLECTION_TYPE = #{collection_type}
     </if>
-    <if test="isActive != null and isActive != ''">
-      AND IS_ACTIVE = (#{isActive} = 'Y')
+    <if test="is_active != null and is_active != ''">
+      AND IS_ACTIVE = (#{is_active} = 'Y')
     </if>
     <if test="search != null and search != ''">
       AND (CONFIG_NAME ILIKE '%' || #{search} || '%'
@@ -94,22 +94,22 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{companyCode}
-        , #{configName}
+        #{company_code}
+        , #{config_name}
         , #{description}
-        , #{sourceConnectionId, jdbcType=INTEGER}
-        , #{collectionType}
+        , #{source_connection_id, jdbcType=INTEGER}
+        , #{collection_type}
         , <choose>
-            <when test="collectionOptions != null">#{collectionOptions}::JSONB</when>
+            <when test="collection_options != null">#{collection_options}::JSONB</when>
             <otherwise>NULL</otherwise>
           </choose>
-        , #{scheduleCron}
+        , #{schedule_cron}
         , <choose>
-            <when test="isActive != null">(#{isActive} = 'Y')</when>
+            <when test="is_active != null">(#{is_active} = 'Y')</when>
             <otherwise>TRUE</otherwise>
           </choose>
-        , #{createdBy}
-        , #{updatedBy}
+        , #{created_by}
+        , #{updated_by}
         , NOW()
         , NOW()
     )
@@ -118,18 +118,18 @@
   <update id="updateCollection" parameterType="map">
     UPDATE DATA_COLLECTION_CONFIGS
     SET
-        CONFIG_NAME = COALESCE(#{configName}, CONFIG_NAME)
+        CONFIG_NAME = COALESCE(#{config_name}, CONFIG_NAME)
         , DESCRIPTION = #{description}
-        , SOURCE_CONNECTION_ID = COALESCE(#{sourceConnectionId, jdbcType=INTEGER}, SOURCE_CONNECTION_ID)
-        , COLLECTION_TYPE = COALESCE(#{collectionType}, COLLECTION_TYPE)
-        , COLLECTION_OPTIONS = CASE WHEN #{collectionOptions} IS NOT NULL
-                                    THEN #{collectionOptions}::JSONB
+        , SOURCE_CONNECTION_ID = COALESCE(#{source_connection_id, jdbcType=INTEGER}, SOURCE_CONNECTION_ID)
+        , COLLECTION_TYPE = COALESCE(#{collection_type}, COLLECTION_TYPE)
+        , COLLECTION_OPTIONS = CASE WHEN #{collection_options} IS NOT NULL
+                                    THEN #{collection_options}::JSONB
                                     ELSE COLLECTION_OPTIONS END
-        , SCHEDULE_CRON = #{scheduleCron}
-        , IS_ACTIVE = CASE WHEN #{isActive} IS NOT NULL
-                           THEN (#{isActive} = 'Y')
+        , SCHEDULE_CRON = #{schedule_cron}
+        , IS_ACTIVE = CASE WHEN #{is_active} IS NOT NULL
+                           THEN (#{is_active} = 'Y')
                            ELSE IS_ACTIVE END
-        , UPDATED_BY = #{updatedBy}
+        , UPDATED_BY = #{updated_by}
         , UPDATED_DATE = NOW()
     WHERE ID = #{id}
     <include refid="common.companyCodeFilter"/>
@@ -148,8 +148,8 @@
         , STARTED_AT
         , CREATED_DATE
     ) VALUES (
-        #{configId}
-        , #{jobStatus}
+        #{config_id}
+        , #{job_status}
         , NOW()
         , NOW()
     )
@@ -158,10 +158,10 @@
   <update id="updateCollectionJob" parameterType="map">
     UPDATE DATA_COLLECTION_JOBS
     SET
-        JOB_STATUS = #{jobStatus}
+        JOB_STATUS = #{job_status}
         , COMPLETED_AT = NOW()
-    <if test="recordsProcessed != null">, RECORDS_PROCESSED = #{recordsProcessed}</if>
-    <if test="errorMessage != null">, ERROR_MESSAGE = #{errorMessage}</if>
+    <if test="records_processed != null">, RECORDS_PROCESSED = #{records_processed}</if>
+    <if test="error_message != null">, ERROR_MESSAGE = #{error_message}</if>
     WHERE ID = #{id}
   </update>
 
@@ -180,7 +180,7 @@
     INNER JOIN DATA_COLLECTION_CONFIGS C
       ON C.ID = J.CONFIG_ID
     WHERE 1=1
-    <if test="configId != null">AND J.CONFIG_ID = #{configId}</if>
+    <if test="config_id != null">AND J.CONFIG_ID = #{config_id}</if>
     ORDER BY J.STARTED_AT DESC
     <include refid="common.pagination"/>
   </select>
@@ -199,7 +199,7 @@
                THEN EXTRACT(EPOCH FROM (COMPLETED_AT - STARTED_AT)) * 1000
                ELSE NULL END AS EXECUTION_TIME_MS
     FROM DATA_COLLECTION_JOBS
-    WHERE CONFIG_ID = #{configId}
+    WHERE CONFIG_ID = #{config_id}
     ORDER BY STARTED_AT DESC
     LIMIT 50
   </select>
diff --git a/backend-spring/src/main/resources/mapper/common.xml b/backend-spring/src/main/resources/mapper/common.xml
index 96539b1d..48b7eefa 100644
--- a/backend-spring/src/main/resources/mapper/common.xml
+++ b/backend-spring/src/main/resources/mapper/common.xml
@@ -5,8 +5,8 @@
 
   <!-- company_code 필터: SUPER_ADMIN("*")은 전체, 나머지는 자사 데이터만 -->
   <sql id="companyCodeFilter">
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </sql>
 
@@ -20,9 +20,9 @@
   <!-- 동적 정렬 -->
   <sql id="dynamicOrderBy">
     <choose>
-      <when test="sortColumn != null and sortColumn != ''">
+      <when test="sort_column != null and sort_column != ''">
         ORDER BY ${sortColumn}
-        <if test="sortDirection != null and sortDirection != ''">
+        <if test="sort_direction != null and sort_direction != ''">
           ${sortDirection}
         </if>
       </when>
@@ -42,12 +42,12 @@
     CREATED_BY, CREATED_DATE, UPDATED_BY, UPDATED_DATE
   </sql>
   <sql id="auditInsertValues">
-    #{createdBy}, NOW(), #{updatedBy}, NOW()
+    #{created_by}, NOW(), #{updated_by}, NOW()
   </sql>
 
   <!-- 감사 필드 (UPDATE용) -->
   <sql id="auditUpdateSet">
-    UPDATED_BY = #{updatedBy}, UPDATED_DATE = NOW()
+    UPDATED_BY = #{updated_by}, UPDATED_DATE = NOW()
   </sql>
 
   <!-- 공통 코드 목록 조회 -->
@@ -55,8 +55,8 @@
     SELECT *
     FROM COMMON_CODE
     WHERE 1=1
-    <if test="codeType != null">
-      AND CODE_TYPE = #{codeType}
+    <if test="code_type != null">
+      AND CODE_TYPE = #{code_type}
     </if>
     <include refid="companyCodeFilter"/>
     ORDER BY SORT_ORDER ASC
diff --git a/backend-spring/src/main/resources/mapper/commonCode.xml b/backend-spring/src/main/resources/mapper/commonCode.xml
index 37a73331..934b2373 100644
--- a/backend-spring/src/main/resources/mapper/commonCode.xml
+++ b/backend-spring/src/main/resources/mapper/commonCode.xml
@@ -33,11 +33,11 @@
         OR LOWER(COALESCE(category_name_eng, '')) LIKE LOWER(CONCAT('%', #{search}, '%'))
       )
     </if>
-    <if test="isActive != null">
-      AND is_active = #{isActive}
+    <if test="is_active != null">
+      AND is_active = #{is_active}
     </if>
-    <if test="menuObjid != null">
-      AND menu_objid = #{menuObjid}
+    <if test="menu_objid != null">
+      AND menu_objid = #{menu_objid}
     </if>
 
     ORDER BY sort_order ASC, category_code ASC
@@ -58,11 +58,11 @@
         OR LOWER(COALESCE(category_name_eng, '')) LIKE LOWER(CONCAT('%', #{search}, '%'))
       )
     </if>
-    <if test="isActive != null">
-      AND is_active = #{isActive}
+    <if test="is_active != null">
+      AND is_active = #{is_active}
     </if>
-    <if test="menuObjid != null">
-      AND menu_objid = #{menuObjid}
+    <if test="menu_objid != null">
+      AND menu_objid = #{menu_objid}
     </if>
   </select>
 
@@ -83,7 +83,7 @@
 
     FROM code_category
 
-    WHERE category_code = #{categoryCode}
+    WHERE category_code = #{category_code}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -102,16 +102,16 @@
       created_date,
       updated_date
     ) VALUES (
-      #{categoryCode},
-      #{categoryName},
-      #{categoryNameEng},
+      #{category_code},
+      #{category_name},
+      #{category_name_eng},
       #{description},
-      #{sortOrder},
-      #{isActive},
-      #{menuObjid},
-      #{companyCode},
-      #{createdBy},
-      #{updatedBy},
+      #{sort_order},
+      #{is_active},
+      #{menu_objid},
+      #{company_code},
+      #{created_by},
+      #{updated_by},
       NOW(),
       NOW()
     )
@@ -120,23 +120,23 @@
   <update id="updateCommonCodeCategory" parameterType="map">
     UPDATE code_category
     <set>
-      <if test="categoryName != null">category_name = #{categoryName},</if>
-      <if test="categoryNameEng != null">category_name_eng = #{categoryNameEng},</if>
+      <if test="category_name != null">category_name = #{category_name},</if>
+      <if test="category_name_eng != null">category_name_eng = #{category_name_eng},</if>
       <if test="description != null">description = #{description},</if>
-      <if test="sortOrder != null">sort_order = #{sortOrder},</if>
-      <if test="isActive != null">is_active = #{isActive},</if>
-      updated_by = #{updatedBy},
+      <if test="sort_order != null">sort_order = #{sort_order},</if>
+      <if test="is_active != null">is_active = #{is_active},</if>
+      updated_by = #{updated_by},
       updated_date = NOW()
     </set>
 
-    WHERE category_code = #{categoryCode}
+    WHERE category_code = #{category_code}
     <include refid="common.companyCodeFilter"/>
   </update>
 
   <delete id="deleteCommonCodeCategory" parameterType="map">
     DELETE FROM code_category
 
-    WHERE category_code = #{categoryCode}
+    WHERE category_code = #{category_code}
     <include refid="common.companyCodeFilter"/>
   </delete>
 
@@ -145,7 +145,7 @@
 
     FROM code_category
 
-    WHERE category_code = #{categoryCode}
+    WHERE category_code = #{category_code}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -162,8 +162,8 @@
       <when test="field == 'categoryNameEng'">AND category_name_eng = #{value}</when>
       <otherwise>AND category_code = #{value}</otherwise>
     </choose>
-    <if test="excludeCode != null and excludeCode != ''">
-      AND category_code != #{excludeCode}
+    <if test="exclude_code != null and exclude_code != ''">
+      AND category_code != #{exclude_code}
     </if>
   </select>
 
@@ -191,7 +191,7 @@
 
     FROM code_info
 
-    WHERE code_category = #{categoryCode}
+    WHERE code_category = #{category_code}
     <include refid="common.companyCodeFilter"/>
     <if test="search != null and search != ''">
       AND (
@@ -200,8 +200,8 @@
         OR LOWER(COALESCE(code_name_eng, '')) LIKE LOWER(CONCAT('%', #{search}, '%'))
       )
     </if>
-    <if test="isActive != null">
-      AND is_active = #{isActive}
+    <if test="is_active != null">
+      AND is_active = #{is_active}
     </if>
 
     ORDER BY sort_order ASC, code_value ASC
@@ -213,7 +213,7 @@
 
     FROM code_info
 
-    WHERE code_category = #{categoryCode}
+    WHERE code_category = #{category_code}
     <include refid="common.companyCodeFilter"/>
     <if test="search != null and search != ''">
       AND (
@@ -222,8 +222,8 @@
         OR LOWER(COALESCE(code_name_eng, '')) LIKE LOWER(CONCAT('%', #{search}, '%'))
       )
     </if>
-    <if test="isActive != null">
-      AND is_active = #{isActive}
+    <if test="is_active != null">
+      AND is_active = #{is_active}
     </if>
   </select>
 
@@ -247,8 +247,8 @@
 
     FROM code_info
 
-    WHERE code_category = #{categoryCode}
-      AND code_value    = #{codeValue}
+    WHERE code_category = #{category_code}
+      AND code_value    = #{code_value}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -270,19 +270,19 @@
       created_date,
       updated_date
     ) VALUES (
-      #{categoryCode},
-      #{codeValue},
-      #{codeName},
-      #{codeNameEng},
+      #{category_code},
+      #{code_value},
+      #{code_name},
+      #{code_name_eng},
       #{description},
-      #{sortOrder},
-      #{isActive},
-      #{menuObjid},
-      #{companyCode},
-      #{parentCodeValue},
+      #{sort_order},
+      #{is_active},
+      #{menu_objid},
+      #{company_code},
+      #{parent_code_value},
       #{depth},
-      #{createdBy},
-      #{updatedBy},
+      #{created_by},
+      #{updated_by},
       NOW(),
       NOW()
     )
@@ -291,37 +291,37 @@
   <update id="updateCommonCode" parameterType="map">
     UPDATE code_info
     <set>
-      <if test="codeName != null">code_name = #{codeName},</if>
-      <if test="codeNameEng != null">code_name_eng = #{codeNameEng},</if>
+      <if test="code_name != null">code_name = #{code_name},</if>
+      <if test="code_name_eng != null">code_name_eng = #{code_name_eng},</if>
       <if test="description != null">description = #{description},</if>
-      <if test="sortOrder != null">sort_order = #{sortOrder},</if>
-      <if test="isActive != null">is_active = #{isActive},</if>
-      <if test="parentCodeValue != null">parent_code_value = #{parentCodeValue},</if>
+      <if test="sort_order != null">sort_order = #{sort_order},</if>
+      <if test="is_active != null">is_active = #{is_active},</if>
+      <if test="parent_code_value != null">parent_code_value = #{parent_code_value},</if>
       <if test="depth != null">depth = #{depth},</if>
-      updated_by = #{updatedBy},
+      updated_by = #{updated_by},
       updated_date = NOW()
     </set>
 
-    WHERE code_category = #{categoryCode}
-      AND code_value    = #{codeValue}
+    WHERE code_category = #{category_code}
+      AND code_value    = #{code_value}
     <include refid="common.companyCodeFilter"/>
   </update>
 
   <delete id="deleteCommonCode" parameterType="map">
     DELETE FROM code_info
 
-    WHERE code_category = #{categoryCode}
-      AND code_value    = #{codeValue}
+    WHERE code_category = #{category_code}
+      AND code_value    = #{code_value}
     <include refid="common.companyCodeFilter"/>
   </delete>
 
   <update id="updateCommonCodeSortOrder" parameterType="map">
     UPDATE code_info
-    SET sort_order   = #{sortOrder},
+    SET sort_order   = #{sort_order},
         updated_date = NOW()
 
-    WHERE code_category = #{categoryCode}
-      AND code_value    = #{codeValue}
+    WHERE code_category = #{category_code}
+      AND code_value    = #{code_value}
     <include refid="common.companyCodeFilter"/>
   </update>
 
@@ -330,8 +330,8 @@
 
     FROM code_info
 
-    WHERE code_category = #{categoryCode}
-      AND code_value    = #{codeValue}
+    WHERE code_category = #{category_code}
+      AND code_value    = #{code_value}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -340,7 +340,7 @@
 
     FROM code_info
 
-    WHERE code_category = #{categoryCode}
+    WHERE code_category = #{category_code}
     <include refid="common.companyCodeFilter"/>
     <choose>
       <when test="field == 'codeValue'">AND code_value = #{value}</when>
@@ -348,8 +348,8 @@
       <when test="field == 'codeNameEng'">AND code_name_eng = #{value}</when>
       <otherwise>AND code_value = #{value}</otherwise>
     </choose>
-    <if test="excludeCode != null and excludeCode != ''">
-      AND code_value != #{excludeCode}
+    <if test="exclude_code != null and exclude_code != ''">
+      AND code_value != #{exclude_code}
     </if>
   </select>
 
@@ -358,8 +358,8 @@
 
     FROM code_info
 
-    WHERE code_category = #{categoryCode}
-      AND code_value    = #{codeValue}
+    WHERE code_category = #{category_code}
+      AND code_value    = #{code_value}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -368,8 +368,8 @@
 
     FROM code_info
 
-    WHERE code_category     = #{categoryCode}
-      AND parent_code_value = #{codeValue}
+    WHERE code_category     = #{category_code}
+      AND parent_code_value = #{code_value}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -397,13 +397,13 @@
 
     FROM code_info
 
-    WHERE code_category = #{categoryCode}
+    WHERE code_category = #{category_code}
     <include refid="common.companyCodeFilter"/>
-    <if test="isActive != null">
-      AND is_active = #{isActive}
+    <if test="is_active != null">
+      AND is_active = #{is_active}
     </if>
-    <if test="parentCodeValue != null">
-      AND parent_code_value = #{parentCodeValue}
+    <if test="parent_code_value != null">
+      AND parent_code_value = #{parent_code_value}
     </if>
     <if test="depth != null">
       AND depth = #{depth}
@@ -432,7 +432,7 @@
 
     FROM code_info
 
-    WHERE code_category = #{categoryCode}
+    WHERE code_category = #{category_code}
     <include refid="common.companyCodeFilter"/>
 
     ORDER BY depth ASC, sort_order ASC, code_value ASC
@@ -446,10 +446,10 @@
 
     FROM code_info
 
-    WHERE code_category = #{categoryCode}
+    WHERE code_category = #{category_code}
     <include refid="common.companyCodeFilter"/>
-    <if test="isActive != null">
-      AND is_active = #{isActive}
+    <if test="is_active != null">
+      AND is_active = #{is_active}
     </if>
 
     ORDER BY sort_order ASC, code_value ASC
diff --git a/backend-spring/src/main/resources/mapper/companyManagement.xml b/backend-spring/src/main/resources/mapper/companyManagement.xml
index a3d4b9ee..2e3c02c0 100644
--- a/backend-spring/src/main/resources/mapper/companyManagement.xml
+++ b/backend-spring/src/main/resources/mapper/companyManagement.xml
@@ -7,14 +7,14 @@
   <select id="selectCompanyByCode" parameterType="map" resultType="map">
     SELECT COMPANY_CODE, COMPANY_NAME, STATUS
     FROM COMPANY_MNG
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <!-- 회사 soft delete (status = 'deleted') -->
   <update id="softDeleteCompany" parameterType="map">
     UPDATE COMPANY_MNG
     SET STATUS = 'deleted'
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <!-- 전체 회사 코드 목록 (disk usage 전체 조회용) -->
diff --git a/backend-spring/src/main/resources/mapper/componentStandard.xml b/backend-spring/src/main/resources/mapper/componentStandard.xml
index e13dc3ea..b0d7738e 100644
--- a/backend-spring/src/main/resources/mapper/componentStandard.xml
+++ b/backend-spring/src/main/resources/mapper/componentStandard.xml
@@ -27,21 +27,21 @@
     <if test="is_public != null">
       AND is_public = #{is_public}
     </if>
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (is_public = 'Y' OR (company_code = #{companyCode} OR company_code = '*'))
+    <if test='company_code != null and company_code != "*"'>
+      AND (is_public = 'Y' OR (company_code = #{company_code} OR company_code = '*'))
     </if>
-    <if test="searchPattern != null">
-      AND (component_name   ILIKE #{searchPattern}
-        OR component_name_eng ILIKE #{searchPattern}
-        OR description        ILIKE #{searchPattern})
+    <if test="search_pattern != null">
+      AND (component_name   ILIKE #{search_pattern}
+        OR component_name_eng ILIKE #{search_pattern}
+        OR description        ILIKE #{search_pattern})
     </if>
   </sql>
 
   <!-- 카테고리/통계용 필터 (active + company) -->
   <sql id="publicCompanyFilter">
     AND is_active = 'Y'
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (is_public = 'Y' OR (company_code = #{companyCode} OR company_code = '*'))
+    <if test='company_code != null and company_code != "*"'>
+      AND (is_public = 'Y' OR (company_code = #{company_code} OR company_code = '*'))
     </if>
   </sql>
 
@@ -231,8 +231,8 @@
     FROM component_standards
 
     WHERE component_code = #{component_code}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
     LIMIT 1
   </select>
diff --git a/backend-spring/src/main/resources/mapper/dashboard.xml b/backend-spring/src/main/resources/mapper/dashboard.xml
index 7096a0a5..bba1544e 100644
--- a/backend-spring/src/main/resources/mapper/dashboard.xml
+++ b/backend-spring/src/main/resources/mapper/dashboard.xml
@@ -40,7 +40,7 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{companyCode}
+        #{company_code}
         , NOW()
         , NOW()
     )
diff --git a/backend-spring/src/main/resources/mapper/dataflow.xml b/backend-spring/src/main/resources/mapper/dataflow.xml
index 9fd8e229..5c40b735 100644
--- a/backend-spring/src/main/resources/mapper/dataflow.xml
+++ b/backend-spring/src/main/resources/mapper/dataflow.xml
@@ -20,7 +20,7 @@
   <select id="getTableRelationshipInfo" parameterType="map" resultType="map">
     SELECT *
     FROM TABLE_RELATIONSHIPS
-    WHERE RELATIONSHIP_ID = #{relationshipId}
+    WHERE RELATIONSHIP_ID = #{relationship_id}
       AND IS_ACTIVE = 'Y'
     <include refid="common.companyCodeFilter"/>
     LIMIT 1
@@ -30,12 +30,12 @@
   <select id="getExistingRelationshipInfo" parameterType="map" resultType="map">
     SELECT *
     FROM TABLE_RELATIONSHIPS
-    WHERE DIAGRAM_ID = #{diagramId}
-      AND FROM_TABLE_NAME = #{fromTableName}
-      AND FROM_COLUMN_NAME = #{fromColumnName}
-      AND TO_TABLE_NAME = #{toTableName}
-      AND TO_COLUMN_NAME = #{toColumnName}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE DIAGRAM_ID = #{diagram_id}
+      AND FROM_TABLE_NAME = #{from_table_name}
+      AND FROM_COLUMN_NAME = #{from_column_name}
+      AND TO_TABLE_NAME = #{to_table_name}
+      AND TO_COLUMN_NAME = #{to_column_name}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       AND IS_ACTIVE = 'Y'
     LIMIT 1
   </select>
@@ -45,7 +45,7 @@
     SELECT
         COALESCE(MAX(DIAGRAM_ID), 0) AS MAX_DIAGRAM_ID
     FROM TABLE_RELATIONSHIPS
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <!-- 생성 -->
@@ -68,22 +68,22 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{diagramId}
-        , #{relationshipName}
-        , #{fromTableName}
-        , #{fromColumnName}
-        , #{toTableName}
-        , #{toColumnName}
-        , #{relationshipType}
-        , #{connectionType}
-        , #{companyCode}
+        #{diagram_id}
+        , #{relationship_name}
+        , #{from_table_name}
+        , #{from_column_name}
+        , #{to_table_name}
+        , #{to_column_name}
+        , #{relationship_type}
+        , #{connection_type}
+        , #{company_code}
         , <choose>
             <when test="settings != null">#{settings}::JSONB</when>
             <otherwise>'{}'::JSONB</otherwise>
           </choose>
         , 'Y'
-        , #{createdBy}
-        , #{createdBy}
+        , #{created_by}
+        , #{created_by}
         , NOW()
         , NOW()
     )
@@ -93,18 +93,18 @@
   <update id="updateTableRelationship" parameterType="map">
     UPDATE TABLE_RELATIONSHIPS
     <set>
-      UPDATED_BY = #{updatedBy},
+      UPDATED_BY = #{updated_by},
       UPDATED_DATE = NOW(),
-      <if test="relationshipName  != null">RELATIONSHIP_NAME = #{relationshipName},</if>
-      <if test="fromTableName     != null">FROM_TABLE_NAME = #{fromTableName},</if>
-      <if test="fromColumnName    != null">FROM_COLUMN_NAME = #{fromColumnName},</if>
-      <if test="toTableName       != null">TO_TABLE_NAME = #{toTableName},</if>
-      <if test="toColumnName      != null">TO_COLUMN_NAME = #{toColumnName},</if>
-      <if test="relationshipType  != null">RELATIONSHIP_TYPE = #{relationshipType},</if>
-      <if test="connectionType    != null">CONNECTION_TYPE = #{connectionType},</if>
+      <if test="relationship_name  != null">RELATIONSHIP_NAME = #{relationship_name},</if>
+      <if test="from_table_name     != null">FROM_TABLE_NAME = #{from_table_name},</if>
+      <if test="from_column_name    != null">FROM_COLUMN_NAME = #{from_column_name},</if>
+      <if test="to_table_name       != null">TO_TABLE_NAME = #{to_table_name},</if>
+      <if test="to_column_name      != null">TO_COLUMN_NAME = #{to_column_name},</if>
+      <if test="relationship_type  != null">RELATIONSHIP_TYPE = #{relationship_type},</if>
+      <if test="connection_type    != null">CONNECTION_TYPE = #{connection_type},</if>
       <if test="settings          != null">SETTINGS = #{settings}::JSONB,</if>
     </set>
-    WHERE RELATIONSHIP_ID = #{relationshipId}
+    WHERE RELATIONSHIP_ID = #{relationship_id}
       AND IS_ACTIVE = 'Y'
     <include refid="common.companyCodeFilter"/>
   </update>
@@ -115,7 +115,7 @@
     SET
         IS_ACTIVE = 'N'
         , UPDATED_DATE = NOW()
-    WHERE RELATIONSHIP_ID = #{relationshipId}
+    WHERE RELATIONSHIP_ID = #{relationship_id}
       AND IS_ACTIVE = 'Y'
     <include refid="common.companyCodeFilter"/>
   </update>
@@ -140,11 +140,11 @@
         , UPDATED_BY
     FROM TABLE_RELATIONSHIPS
     WHERE IS_ACTIVE = 'Y'
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-    <if test="searchTerm != null and searchTerm != ''">
-      AND (RELATIONSHIP_NAME ILIKE '%' || #{searchTerm} || '%'
-        OR FROM_TABLE_NAME ILIKE '%' || #{searchTerm} || '%'
-        OR TO_TABLE_NAME ILIKE '%' || #{searchTerm} || '%')
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+    <if test="search_term != null and search_term != ''">
+      AND (RELATIONSHIP_NAME ILIKE '%' || #{search_term} || '%'
+        OR FROM_TABLE_NAME ILIKE '%' || #{search_term} || '%'
+        OR TO_TABLE_NAME ILIKE '%' || #{search_term} || '%')
     </if>
     ORDER BY DIAGRAM_ID ASC, CREATED_DATE DESC
   </select>
@@ -153,7 +153,7 @@
   <select id="getDiagramRelationshipListByDiagramId" parameterType="map" resultType="map">
     SELECT *
     FROM TABLE_RELATIONSHIPS
-    WHERE DIAGRAM_ID = #{diagramId}
+    WHERE DIAGRAM_ID = #{diagram_id}
       AND IS_ACTIVE = 'Y'
     <include refid="common.companyCodeFilter"/>
     ORDER BY CREATED_DATE ASC
@@ -166,8 +166,8 @@
     WHERE DIAGRAM_ID IN (
       SELECT DISTINCT DIAGRAM_ID
       FROM TABLE_RELATIONSHIPS
-      WHERE RELATIONSHIP_NAME = #{diagramName}
-        AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+      WHERE RELATIONSHIP_NAME = #{diagram_name}
+        AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
         AND IS_ACTIVE = 'Y'
     )
     AND IS_ACTIVE = 'Y'
@@ -182,7 +182,7 @@
     WHERE DIAGRAM_ID = (
       SELECT DIAGRAM_ID
       FROM TABLE_RELATIONSHIPS
-      WHERE RELATIONSHIP_ID = #{relationshipId}
+      WHERE RELATIONSHIP_ID = #{relationship_id}
         AND IS_ACTIVE = 'Y'
       LIMIT 1
     )
@@ -207,7 +207,7 @@
     SET
         IS_ACTIVE = 'N'
         , UPDATED_DATE = NOW()
-    WHERE DIAGRAM_ID = #{diagramId}
+    WHERE DIAGRAM_ID = #{diagram_id}
       AND IS_ACTIVE = 'Y'
     <include refid="common.companyCodeFilter"/>
   </update>
@@ -232,19 +232,19 @@
         , CREATED_BY
         , CREATED_DATE
     ) VALUES (
-        #{relationshipId}
-        , #{fromTableName}
-        , #{fromColumnName}
-        , #{toTableName}
-        , #{toColumnName}
-        , #{connectionType}
-        , #{companyCode}
+        #{relationship_id}
+        , #{from_table_name}
+        , #{from_column_name}
+        , #{to_table_name}
+        , #{to_column_name}
+        , #{connection_type}
+        , #{company_code}
         , <choose>
-            <when test="bridgeData != null">#{bridgeData}::JSONB</when>
+            <when test="bridge_data != null">#{bridge_data}::JSONB</when>
             <otherwise>'{}'::JSONB</otherwise>
           </choose>
         , 'Y'
-        , #{createdBy}
+        , #{created_by}
         , NOW()
     )
   </insert>
@@ -253,7 +253,7 @@
   <select id="getDataLinkList" parameterType="map" resultType="map">
     SELECT *
     FROM DATA_RELATIONSHIP_BRIDGE
-    WHERE RELATIONSHIP_ID = #{relationshipId}
+    WHERE RELATIONSHIP_ID = #{relationship_id}
       AND IS_ACTIVE = 'Y'
     <include refid="common.companyCodeFilter"/>
     ORDER BY CREATED_DATE DESC
@@ -265,7 +265,7 @@
     SET
         IS_ACTIVE = 'N'
         , UPDATED_DATE = NOW()
-    WHERE BRIDGE_ID = #{bridgeId}
+    WHERE BRIDGE_ID = #{bridge_id}
       AND IS_ACTIVE = 'Y'
     <include refid="common.companyCodeFilter"/>
   </update>
@@ -280,7 +280,7 @@
     SELECT
         TABLE_NAME
     FROM INFORMATION_SCHEMA.TABLES
-    WHERE TABLE_NAME = #{tableName}
+    WHERE TABLE_NAME = #{table_name}
       AND TABLE_SCHEMA = 'public'
     LIMIT 1
   </select>
@@ -290,7 +290,7 @@
     SELECT
         COUNT(*)
     FROM "${tableName}"
-    <if test="search != null and search != '' and searchColumn != null and searchColumn != ''">
+    <if test="search != null and search != '' and search_column != null and search_column != ''">
       WHERE "${searchColumn}" ILIKE '%' || #{search} || '%'
     </if>
   </select>
@@ -299,7 +299,7 @@
   <select id="getTableDataList" parameterType="map" resultType="map">
     SELECT *
     FROM "${tableName}"
-    <if test="search != null and search != '' and searchColumn != null and searchColumn != ''">
+    <if test="search != null and search != '' and search_column != null and search_column != ''">
       WHERE "${searchColumn}" ILIKE '%' || #{search} || '%'
     </if>
     ORDER BY 1
diff --git a/backend-spring/src/main/resources/mapper/dataflowDiagram.xml b/backend-spring/src/main/resources/mapper/dataflowDiagram.xml
index bbf03506..34407c1b 100644
--- a/backend-spring/src/main/resources/mapper/dataflowDiagram.xml
+++ b/backend-spring/src/main/resources/mapper/dataflowDiagram.xml
@@ -11,8 +11,8 @@
     FROM DATAFLOW_DIAGRAMS
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
-    <if test="searchTerm != null and searchTerm != ''">
-      AND DIAGRAM_NAME ILIKE '%' || #{searchTerm} || '%'
+    <if test="search_term != null and search_term != ''">
+      AND DIAGRAM_NAME ILIKE '%' || #{search_term} || '%'
     </if>
     ORDER BY UPDATED_DATE DESC
     <include refid="common.pagination"/>
@@ -25,8 +25,8 @@
     FROM DATAFLOW_DIAGRAMS
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
-    <if test="searchTerm != null and searchTerm != ''">
-      AND DIAGRAM_NAME ILIKE '%' || #{searchTerm} || '%'
+    <if test="search_term != null and search_term != ''">
+      AND DIAGRAM_NAME ILIKE '%' || #{search_term} || '%'
     </if>
   </select>
 
@@ -77,7 +77,7 @@
             <when test="plan != null">#{plan}::JSONB</when>
             <otherwise>NULL</otherwise>
           </choose>
-        , #{companyCode}
+        , #{company_code}
         , #{created_by}
         , #{updated_by}
         , NOW()
@@ -99,25 +99,25 @@
       UPDATED_DATE = NOW(),
       <if test="diagram_name != null">DIAGRAM_NAME = #{diagram_name},</if>
       <if test="relationships != null">RELATIONSHIPS = #{relationships}::JSONB,</if>
-      <if test="updateNodePositions == true">
+      <if test="update_node_positions == true">
         NODE_POSITIONS = <choose>
           <when test="node_positions != null">#{node_positions}::JSONB</when>
           <otherwise>NULL</otherwise>
         </choose>,
       </if>
-      <if test="updateCategory == true">
+      <if test="update_category == true">
         CATEGORY = <choose>
           <when test="category != null">#{category}::JSONB</when>
           <otherwise>NULL</otherwise>
         </choose>,
       </if>
-      <if test="updateControl == true">
+      <if test="update_control == true">
         CONTROL = <choose>
           <when test="control != null">#{control}::JSONB</when>
           <otherwise>NULL</otherwise>
         </choose>,
       </if>
-      <if test="updatePlan == true">
+      <if test="update_plan == true">
         PLAN = <choose>
           <when test="plan != null">#{plan}::JSONB</when>
           <otherwise>NULL</otherwise>
diff --git a/backend-spring/src/main/resources/mapper/dataflowExecution.xml b/backend-spring/src/main/resources/mapper/dataflowExecution.xml
index c2d7befc..d20f8155 100644
--- a/backend-spring/src/main/resources/mapper/dataflowExecution.xml
+++ b/backend-spring/src/main/resources/mapper/dataflowExecution.xml
@@ -13,7 +13,7 @@
     FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC
     JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU
         ON TC.CONSTRAINT_NAME = KCU.CONSTRAINT_NAME
-    WHERE TC.TABLE_NAME = #{tableName}
+    WHERE TC.TABLE_NAME = #{table_name}
       AND TC.CONSTRAINT_TYPE = 'PRIMARY KEY'
     ORDER BY KCU.ORDINAL_POSITION
   </select>
@@ -31,7 +31,7 @@
         , PASSWORD
         , CONNECTION_TIMEOUT
     FROM EXTERNAL_DB_CONNECTIONS
-    WHERE ID = #{connectionId}
+    WHERE ID = #{connection_id}
   </select>
 
 </mapper>
diff --git a/backend-spring/src/main/resources/mapper/dbTypeCategory.xml b/backend-spring/src/main/resources/mapper/dbTypeCategory.xml
index b1c2c6e4..d45bf8af 100644
--- a/backend-spring/src/main/resources/mapper/dbTypeCategory.xml
+++ b/backend-spring/src/main/resources/mapper/dbTypeCategory.xml
@@ -19,7 +19,7 @@
 
         FROM db_type_categories
 
-        WHERE type_code = #{typeCode}
+        WHERE type_code = #{type_code}
     </select>
 
     <!-- typeCode 존재 여부 확인 -->
@@ -28,7 +28,7 @@
 
         FROM db_type_categories
 
-        WHERE type_code = #{typeCode}
+        WHERE type_code = #{type_code}
     </select>
 
     <!-- 카테고리 생성 -->
@@ -51,14 +51,14 @@
             <if test="is_active != null">is_active = #{is_active},</if>
             UPDATED_DATE = NOW()
         </set>
-        WHERE type_code = #{typeCode}
+        WHERE type_code = #{type_code}
     </update>
 
     <!-- 카테고리 비활성화 (소프트 삭제) -->
     <update id="deactivateCategory" parameterType="map">
         UPDATE db_type_categories
         SET is_active = FALSE, UPDATED_DATE = NOW()
-        WHERE type_code = #{typeCode}
+        WHERE type_code = #{type_code}
     </update>
 
     <!-- 해당 DB 타입 사용 중인 연결 수 조회 -->
@@ -67,7 +67,7 @@
 
         FROM external_db_connections
 
-        WHERE db_type = #{typeCode}
+        WHERE db_type = #{type_code}
           AND is_active = 'Y'
     </select>
 
diff --git a/backend-spring/src/main/resources/mapper/ddl.xml b/backend-spring/src/main/resources/mapper/ddl.xml
index 2af7314b..842854f9 100644
--- a/backend-spring/src/main/resources/mapper/ddl.xml
+++ b/backend-spring/src/main/resources/mapper/ddl.xml
@@ -14,13 +14,13 @@
             , ERROR_MESSAGE
             , EXECUTED_AT
         ) VALUES (
-            #{userId}
-            , #{companyCode}
-            , #{ddlType}
-            , #{tableName}
-            , #{ddlQuery}
+            #{user_id}
+            , #{company_code}
+            , #{ddl_type}
+            , #{table_name}
+            , #{ddl_query}
             , #{success}
-            , #{errorMessage}
+            , #{error_message}
             , NOW()
         )
     </insert>
@@ -42,11 +42,11 @@
               END AS DDL_QUERY_PREVIEW
         FROM DDL_EXECUTION_LOG
         WHERE 1=1
-        <if test="userId != null and userId != ''">
-            AND USER_ID = #{userId}
+        <if test="user_id != null and user_id != ''">
+            AND USER_ID = #{user_id}
         </if>
-        <if test="ddlType != null and ddlType != ''">
-            AND DDL_TYPE = #{ddlType}
+        <if test="ddl_type != null and ddl_type != ''">
+            AND DDL_TYPE = #{ddl_type}
         </if>
         ORDER BY EXECUTED_AT DESC
         LIMIT #{limit}
@@ -60,11 +60,11 @@
             , SUM(CASE WHEN SUCCESS = 'false' THEN 1 ELSE 0 END) AS FAILED_EXECUTIONS
         FROM DDL_EXECUTION_LOG
         WHERE 1=1
-        <if test="fromDate != null and fromDate != ''">
-            AND EXECUTED_AT >= CAST(#{fromDate} AS TIMESTAMP)
+        <if test="from_date != null and from_date != ''">
+            AND EXECUTED_AT >= CAST(#{from_date} AS TIMESTAMP)
         </if>
-        <if test="toDate != null and toDate != ''">
-            AND EXECUTED_AT &lt;= CAST(#{toDate} AS TIMESTAMP)
+        <if test="to_date != null and to_date != ''">
+            AND EXECUTED_AT &lt;= CAST(#{to_date} AS TIMESTAMP)
         </if>
     </select>
 
@@ -75,11 +75,11 @@
             , COUNT(*) AS COUNT
         FROM DDL_EXECUTION_LOG
         WHERE 1=1
-        <if test="fromDate != null and fromDate != ''">
-            AND EXECUTED_AT >= CAST(#{fromDate} AS TIMESTAMP)
+        <if test="from_date != null and from_date != ''">
+            AND EXECUTED_AT >= CAST(#{from_date} AS TIMESTAMP)
         </if>
-        <if test="toDate != null and toDate != ''">
-            AND EXECUTED_AT &lt;= CAST(#{toDate} AS TIMESTAMP)
+        <if test="to_date != null and to_date != ''">
+            AND EXECUTED_AT &lt;= CAST(#{to_date} AS TIMESTAMP)
         </if>
         GROUP BY DDL_TYPE
         ORDER BY COUNT DESC
@@ -92,11 +92,11 @@
             , COUNT(*) AS COUNT
         FROM DDL_EXECUTION_LOG
         WHERE 1=1
-        <if test="fromDate != null and fromDate != ''">
-            AND EXECUTED_AT >= CAST(#{fromDate} AS TIMESTAMP)
+        <if test="from_date != null and from_date != ''">
+            AND EXECUTED_AT >= CAST(#{from_date} AS TIMESTAMP)
         </if>
-        <if test="toDate != null and toDate != ''">
-            AND EXECUTED_AT &lt;= CAST(#{toDate} AS TIMESTAMP)
+        <if test="to_date != null and to_date != ''">
+            AND EXECUTED_AT &lt;= CAST(#{to_date} AS TIMESTAMP)
         </if>
         GROUP BY USER_ID
         ORDER BY COUNT DESC
@@ -113,11 +113,11 @@
             , EXECUTED_AT
         FROM DDL_EXECUTION_LOG
         WHERE SUCCESS = 'false'
-        <if test="fromDate != null and fromDate != ''">
-            AND EXECUTED_AT >= CAST(#{fromDate} AS TIMESTAMP)
+        <if test="from_date != null and from_date != ''">
+            AND EXECUTED_AT >= CAST(#{from_date} AS TIMESTAMP)
         </if>
-        <if test="toDate != null and toDate != ''">
-            AND EXECUTED_AT &lt;= CAST(#{toDate} AS TIMESTAMP)
+        <if test="to_date != null and to_date != ''">
+            AND EXECUTED_AT &lt;= CAST(#{to_date} AS TIMESTAMP)
         </if>
         ORDER BY EXECUTED_AT DESC
         LIMIT 10
@@ -134,7 +134,7 @@
             , ERROR_MESSAGE
             , EXECUTED_AT
         FROM DDL_EXECUTION_LOG
-        WHERE TABLE_NAME = #{tableName}
+        WHERE TABLE_NAME = #{table_name}
         ORDER BY EXECUTED_AT DESC
         LIMIT 20
     </select>
@@ -142,7 +142,7 @@
     <!-- ── 오래된 DDL 로그 삭제 ──────────────────────────── -->
     <delete id="deleteOldDdlLogs" parameterType="map">
         DELETE FROM DDL_EXECUTION_LOG
-        WHERE EXECUTED_AT &lt; CAST(#{cutoffDate} AS TIMESTAMP)
+        WHERE EXECUTED_AT &lt; CAST(#{cutoff_date} AS TIMESTAMP)
     </delete>
 
     <!-- ── 테이블 메타데이터 조회 ────────────────────────── -->
@@ -154,14 +154,14 @@
             , CREATED_DATE
             , UPDATED_DATE
         FROM TABLE_LABELS
-        WHERE TABLE_NAME = #{tableName}
+        WHERE TABLE_NAME = #{table_name}
     </select>
 
     <!-- ── 테이블 컬럼 메타데이터 조회 ──────────────────── -->
     <select id="selectTableColumns" parameterType="map" resultType="map">
         SELECT *
         FROM TABLE_TYPE_COLUMNS
-        WHERE TABLE_NAME = #{tableName}
+        WHERE TABLE_NAME = #{table_name}
           AND COMPANY_CODE = '*'
         ORDER BY DISPLAY_ORDER ASC
     </select>
diff --git a/backend-spring/src/main/resources/mapper/delivery.xml b/backend-spring/src/main/resources/mapper/delivery.xml
index 702beb16..1d2da47b 100644
--- a/backend-spring/src/main/resources/mapper/delivery.xml
+++ b/backend-spring/src/main/resources/mapper/delivery.xml
@@ -76,7 +76,7 @@
   <update id="updateDeliveryStatus" parameterType="map">
     UPDATE DELIVERIES
     SET STATUS = #{status}
-      , DELAY_REASON = #{delayReason}
+      , DELAY_REASON = #{delay_reason}
       , UPDATED_DATE = NOW()
     WHERE ID = #{id}
     <include refid="common.companyCodeFilter"/>
diff --git a/backend-spring/src/main/resources/mapper/department.xml b/backend-spring/src/main/resources/mapper/department.xml
index 4bdf9f74..a49b97e4 100644
--- a/backend-spring/src/main/resources/mapper/department.xml
+++ b/backend-spring/src/main/resources/mapper/department.xml
@@ -13,7 +13,7 @@
       COUNT(DISTINCT UD.USER_ID) AS MEMBER_COUNT
     FROM DEPT_INFO D
     LEFT JOIN USER_DEPT UD ON D.DEPT_CODE = UD.DEPT_CODE
-    WHERE (D.COMPANY_CODE = #{companyCode} OR D.COMPANY_CODE = '*')
+    WHERE (D.COMPANY_CODE = #{company_code} OR D.COMPANY_CODE = '*')
     GROUP BY D.DEPT_CODE, D.DEPT_NAME, D.COMPANY_CODE, D.PARENT_DEPT_CODE
     ORDER BY D.DEPT_NAME
   </select>
@@ -26,22 +26,22 @@
       COMPANY_CODE,
       PARENT_DEPT_CODE
     FROM DEPT_INFO
-    WHERE DEPT_CODE = #{deptCode}
+    WHERE DEPT_CODE = #{dept_code}
   </select>
 
   <!-- 중복 부서명 확인 -->
   <select id="selectDuplicateDeptName" parameterType="map" resultType="map">
     SELECT DEPT_CODE, DEPT_NAME
     FROM DEPT_INFO
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-      AND DEPT_NAME = #{deptName}
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+      AND DEPT_NAME = #{dept_name}
   </select>
 
   <!-- 회사명 조회 -->
   <select id="selectCompanyName" parameterType="map" resultType="map">
     SELECT COMPANY_NAME
     FROM COMPANY_MNG
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <!-- 다음 부서 코드 번호 조회 (전역 카운트) -->
@@ -62,11 +62,11 @@
       STATUS,
       CREATED_DATE
     ) VALUES (
-      #{deptCode},
-      #{deptName},
-      #{companyCode},
-      #{companyName},
-      #{parentDeptCode},
+      #{dept_code},
+      #{dept_name},
+      #{company_code},
+      #{company_name},
+      #{parent_dept_code},
       'active',
       NOW()
     )
@@ -76,28 +76,28 @@
   <update id="updateDepartment" parameterType="map">
     UPDATE DEPT_INFO
     SET
-      DEPT_NAME = #{deptName},
-      PARENT_DEPT_CODE = #{parentDeptCode}
-    WHERE DEPT_CODE = #{deptCode}
+      DEPT_NAME = #{dept_name},
+      PARENT_DEPT_CODE = #{parent_dept_code}
+    WHERE DEPT_CODE = #{dept_code}
   </update>
 
   <!-- 하위 부서 수 조회 -->
   <select id="selectChildDeptCount" parameterType="map" resultType="int">
     SELECT COUNT(*)
     FROM DEPT_INFO
-    WHERE PARENT_DEPT_CODE = #{deptCode}
+    WHERE PARENT_DEPT_CODE = #{dept_code}
   </select>
 
   <!-- 부서 삭제 전 user_dept 삭제 -->
   <delete id="deleteUserDeptByDeptCode" parameterType="map">
     DELETE FROM USER_DEPT
-    WHERE DEPT_CODE = #{deptCode}
+    WHERE DEPT_CODE = #{dept_code}
   </delete>
 
   <!-- 부서 삭제 -->
   <delete id="deleteDepartment" parameterType="map">
     DELETE FROM DEPT_INFO
-    WHERE DEPT_CODE = #{deptCode}
+    WHERE DEPT_CODE = #{dept_code}
   </delete>
 
   <!-- 부서원 목록 조회 -->
@@ -115,7 +115,7 @@
     FROM USER_DEPT UD
     JOIN USER_INFO U ON UD.USER_ID = U.USER_ID
     JOIN DEPT_INFO D ON UD.DEPT_CODE = D.DEPT_CODE
-    WHERE UD.DEPT_CODE = #{deptCode}
+    WHERE UD.DEPT_CODE = #{dept_code}
     ORDER BY UD.IS_PRIMARY DESC, U.USER_NAME
   </select>
 
@@ -128,7 +128,7 @@
       POSITION_NAME,
       COMPANY_CODE
     FROM USER_INFO
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       AND (
         USER_ID ILIKE #{search}
         OR USER_NAME ILIKE #{search}
@@ -141,51 +141,51 @@
   <select id="selectUserById" parameterType="map" resultType="map">
     SELECT USER_ID, USER_NAME
     FROM USER_INFO
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </select>
 
   <!-- 기존 부서원 확인 -->
   <select id="selectExistingMember" parameterType="map" resultType="map">
     SELECT USER_ID, DEPT_CODE
     FROM USER_DEPT
-    WHERE USER_ID = #{userId}
-      AND DEPT_CODE = #{deptCode}
+    WHERE USER_ID = #{user_id}
+      AND DEPT_CODE = #{dept_code}
   </select>
 
   <!-- 사용자의 주 부서 확인 -->
   <select id="selectUserPrimaryDept" parameterType="map" resultType="map">
     SELECT USER_ID, DEPT_CODE
     FROM USER_DEPT
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
       AND IS_PRIMARY = TRUE
   </select>
 
   <!-- 부서원 추가 -->
   <insert id="insertDeptMember" parameterType="map">
     INSERT INTO USER_DEPT (USER_ID, DEPT_CODE, IS_PRIMARY, CREATED_DATE)
-    VALUES (#{userId}, #{deptCode}, #{isPrimary}, NOW())
+    VALUES (#{user_id}, #{dept_code}, #{is_primary}, NOW())
   </insert>
 
   <!-- 부서원 제거 -->
   <delete id="deleteDeptMember" parameterType="map">
     DELETE FROM USER_DEPT
-    WHERE USER_ID = #{userId}
-      AND DEPT_CODE = #{deptCode}
+    WHERE USER_ID = #{user_id}
+      AND DEPT_CODE = #{dept_code}
   </delete>
 
   <!-- 사용자 주 부서 전체 해제 -->
   <update id="clearUserPrimaryDept" parameterType="map">
     UPDATE USER_DEPT
     SET IS_PRIMARY = FALSE
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </update>
 
   <!-- 특정 부서를 주 부서로 설정 -->
   <update id="setUserPrimaryDept" parameterType="map">
     UPDATE USER_DEPT
     SET IS_PRIMARY = TRUE
-    WHERE USER_ID = #{userId}
-      AND DEPT_CODE = #{deptCode}
+    WHERE USER_ID = #{user_id}
+      AND DEPT_CODE = #{dept_code}
   </update>
 
 </mapper>
diff --git a/backend-spring/src/main/resources/mapper/design.xml b/backend-spring/src/main/resources/mapper/design.xml
index 17797ddb..cb00360f 100644
--- a/backend-spring/src/main/resources/mapper/design.xml
+++ b/backend-spring/src/main/resources/mapper/design.xml
@@ -5,8 +5,8 @@
 
   <!-- 설계의뢰 검색 조건 -->
   <sql id="designRequestSearchCondition">
-    <if test="sourceType != null and sourceType != ''">
-      AND r.source_type = #{sourceType}
+    <if test="source_type != null and source_type != ''">
+      AND r.source_type = #{source_type}
     </if>
     <if test="status != null and status != ''">
       AND r.status = #{status}
@@ -171,39 +171,39 @@
       content, apply_timing, review_memo, project_id, ecn_no,
       writer, company_code
     ) VALUES (
-      #{requestNo}, #{sourceType}, #{requestDate}, #{dueDate},
+      #{request_no}, #{source_type}, #{request_date}, #{due_date},
       COALESCE(#{priority}, 'NORMAL'), COALESCE(#{status}, 'PENDING'),
-      #{targetName}, #{customer}, #{reqDept}, #{requester}, #{designer}, #{orderNo},
-      #{designType}, #{spec}, #{changeType}, #{drawingNo}, #{urgency}, #{reason},
-      #{content}, #{applyTiming}, #{reviewMemo}, #{projectId, jdbcType=INTEGER}, #{ecnNo},
-      #{writer}, #{companyCode}
+      #{target_name}, #{customer}, #{req_dept}, #{requester}, #{designer}, #{order_no},
+      #{design_type}, #{spec}, #{change_type}, #{drawing_no}, #{urgency}, #{reason},
+      #{content}, #{apply_timing}, #{review_memo}, #{project_id, jdbcType=INTEGER}, #{ecn_no},
+      #{writer}, #{company_code}
     )
   </insert>
 
   <update id="updateDesignRequest" parameterType="map">
     UPDATE dsn_design_request SET
-      source_type = #{sourceType},
-      request_date = #{requestDate},
-      due_date = #{dueDate},
+      source_type = #{source_type},
+      request_date = #{request_date},
+      due_date = #{due_date},
       priority = COALESCE(#{priority}, priority),
       status = COALESCE(#{status}, status),
-      target_name = COALESCE(#{targetName}, target_name),
+      target_name = COALESCE(#{target_name}, target_name),
       customer = #{customer},
-      req_dept = #{reqDept},
+      req_dept = #{req_dept},
       requester = #{requester},
       designer = #{designer},
-      order_no = #{orderNo},
-      design_type = #{designType},
+      order_no = #{order_no},
+      design_type = #{design_type},
       spec = #{spec},
-      change_type = #{changeType},
-      drawing_no = #{drawingNo},
+      change_type = #{change_type},
+      drawing_no = #{drawing_no},
       urgency = #{urgency},
       reason = #{reason},
       content = #{content},
-      apply_timing = #{applyTiming},
-      review_memo = #{reviewMemo},
-      project_id = #{projectId, jdbcType=INTEGER},
-      ecn_no = #{ecnNo},
+      apply_timing = #{apply_timing},
+      review_memo = #{review_memo},
+      project_id = #{project_id, jdbcType=INTEGER},
+      ecn_no = #{ecn_no},
       updated_date = NOW()
 
     WHERE id = #{id}
@@ -234,9 +234,9 @@
       project_no, name, customer, description, status, manager,
       start_date, end_date, company_code, writer
     ) VALUES (
-      #{projectNo}, #{name}, #{customer}, #{description},
+      #{project_no}, #{name}, #{customer}, #{description},
       COALESCE(#{status}, 'ACTIVE'), #{manager},
-      #{startDate}, #{endDate}, #{companyCode}, #{writer}
+      #{start_date}, #{end_date}, #{company_code}, #{writer}
     )
   </insert>
 
@@ -247,8 +247,8 @@
       description = #{description},
       status = COALESCE(#{status}, status),
       manager = #{manager},
-      start_date = #{startDate},
-      end_date = #{endDate},
+      start_date = #{start_date},
+      end_date = #{end_date},
       updated_date = NOW()
 
     WHERE id = #{id}
@@ -279,9 +279,9 @@
       ecn_no, target, description, change_reason, status,
       issued_by, apply_date, company_code, writer
     ) VALUES (
-      #{ecnNo}, #{target}, #{description}, #{changeReason},
-      COALESCE(#{status}, 'DRAFT'), #{issuedBy}, #{applyDate},
-      #{companyCode}, #{writer}
+      #{ecn_no}, #{target}, #{description}, #{change_reason},
+      COALESCE(#{status}, 'DRAFT'), #{issued_by}, #{apply_date},
+      #{company_code}, #{writer}
     )
   </insert>
 
@@ -289,10 +289,10 @@
     UPDATE dsn_ecn SET
       target = COALESCE(#{target}, target),
       description = #{description},
-      change_reason = #{changeReason},
+      change_reason = #{change_reason},
       status = COALESCE(#{status}, status),
-      issued_by = #{issuedBy},
-      apply_date = #{applyDate},
+      issued_by = #{issued_by},
+      apply_date = #{apply_date},
       updated_date = NOW()
 
     WHERE id = #{id}
diff --git a/backend-spring/src/main/resources/mapper/digitalTwin.xml b/backend-spring/src/main/resources/mapper/digitalTwin.xml
index e591899c..99238851 100644
--- a/backend-spring/src/main/resources/mapper/digitalTwin.xml
+++ b/backend-spring/src/main/resources/mapper/digitalTwin.xml
@@ -9,11 +9,11 @@
       AND (L.LAYOUT_NAME ILIKE '%' || #{keyword} || '%'
            OR L.DESCRIPTION ILIKE '%' || #{keyword} || '%')
     </if>
-    <if test="externalDbConnectionId != null">
-      AND L.EXTERNAL_DB_CONNECTION_ID = #{externalDbConnectionId}
+    <if test="external_db_connection_id != null">
+      AND L.EXTERNAL_DB_CONNECTION_ID = #{external_db_connection_id}
     </if>
-    <if test="warehouseKey != null and warehouseKey != ''">
-      AND L.WAREHOUSE_KEY = #{warehouseKey}
+    <if test="warehouse_key != null and warehouse_key != ''">
+      AND L.WAREHOUSE_KEY = #{warehouse_key}
     </if>
   </sql>
 
@@ -32,8 +32,8 @@
     LEFT JOIN DIGITAL_TWIN_OBJECTS O
         ON L.ID = O.LAYOUT_ID
     WHERE 1=1
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (L.COMPANY_CODE = #{companyCode} OR L.COMPANY_CODE = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (L.COMPANY_CODE = #{company_code} OR L.COMPANY_CODE = '*')
     </if>
     <include refid="layoutSearchCondition"/>
     GROUP BY L.ID, U1.USER_NAME, U2.USER_NAME
@@ -45,8 +45,8 @@
     SELECT COUNT(DISTINCT L.ID)
     FROM DIGITAL_TWIN_LAYOUT L
     WHERE 1=1
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (L.COMPANY_CODE = #{companyCode} OR L.COMPANY_CODE = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (L.COMPANY_CODE = #{company_code} OR L.COMPANY_CODE = '*')
     </if>
     <include refid="layoutSearchCondition"/>
   </select>
@@ -56,8 +56,8 @@
     SELECT L.*
     FROM DIGITAL_TWIN_LAYOUT L
     WHERE L.ID = #{id}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (L.COMPANY_CODE = #{companyCode} OR L.COMPANY_CODE = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (L.COMPANY_CODE = #{company_code} OR L.COMPANY_CODE = '*')
     </if>
   </select>
 
@@ -65,7 +65,7 @@
   <select id="getDigitalTwinObjectListByLayoutId" parameterType="map" resultType="map">
     SELECT *
     FROM DIGITAL_TWIN_OBJECTS
-    WHERE LAYOUT_ID = #{layoutId}
+    WHERE LAYOUT_ID = #{layout_id}
     ORDER BY DISPLAY_ORDER ASC, CREATED_DATE ASC
   </select>
 
@@ -83,17 +83,17 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{companyCode}
-        , #{externalDbConnectionId}
-        , #{warehouseKey}
-        , #{layoutName}
+        #{company_code}
+        , #{external_db_connection_id}
+        , #{warehouse_key}
+        , #{layout_name}
         , #{description}
         , <choose>
-            <when test="hierarchyConfig != null">#{hierarchyConfig}::jsonb</when>
+            <when test="hierarchy_config != null">#{hierarchy_config}::jsonb</when>
             <otherwise>NULL</otherwise>
           </choose>
-        , #{createdBy}
-        , #{createdBy}
+        , #{created_by}
+        , #{created_by}
         , NOW()
         , NOW()
     )
@@ -126,28 +126,28 @@
         , EXTERNAL_KEY
         , CREATED_DATE
     ) VALUES (
-        #{layoutId}
+        #{layout_id}
         , #{type}
         , #{name}
-        , #{posX}
-        , #{posY}
-        , #{posZ}
-        , #{sizeX}
-        , #{sizeY}
-        , #{sizeZ}
+        , #{pos_x}
+        , #{pos_y}
+        , #{pos_z}
+        , #{size_x}
+        , #{size_y}
+        , #{size_z}
         , COALESCE(#{rotation}, 0)
         , #{color}
-        , #{areaKey}
-        , #{locaKey}
-        , #{locType}
-        , COALESCE(#{materialCount}, 0)
-        , #{materialPreviewHeight}
-        , #{parentDbId}
-        , COALESCE(#{displayOrder}, 0)
+        , #{area_key}
+        , #{loca_key}
+        , #{loc_type}
+        , COALESCE(#{material_count}, 0)
+        , #{material_preview_height}
+        , #{parent_db_id}
+        , COALESCE(#{display_order}, 0)
         , COALESCE(#{locked}, FALSE)
-        , COALESCE(#{hierarchyLevel}, 1)
-        , #{parentKey}
-        , #{externalKey}
+        , COALESCE(#{hierarchy_level}, 1)
+        , #{parent_key}
+        , #{external_key}
         , NOW()
     )
   </insert>
@@ -156,20 +156,20 @@
   <update id="updateDigitalTwinLayout" parameterType="map">
     UPDATE DIGITAL_TWIN_LAYOUT
     SET
-        LAYOUT_NAME = COALESCE(#{layoutName}, LAYOUT_NAME)
+        LAYOUT_NAME = COALESCE(#{layout_name}, LAYOUT_NAME)
         , DESCRIPTION = COALESCE(#{description}, DESCRIPTION)
         , HIERARCHY_CONFIG =
             <choose>
-                <when test="hierarchyConfig != null">#{hierarchyConfig}::jsonb</when>
+                <when test="hierarchy_config != null">#{hierarchy_config}::jsonb</when>
                 <otherwise>HIERARCHY_CONFIG</otherwise>
             </choose>
-        , EXTERNAL_DB_CONNECTION_ID = COALESCE(#{externalDbConnectionId}, EXTERNAL_DB_CONNECTION_ID)
-        , WAREHOUSE_KEY = COALESCE(#{warehouseKey}, WAREHOUSE_KEY)
-        , UPDATED_BY = COALESCE(#{updatedBy}, UPDATED_BY)
+        , EXTERNAL_DB_CONNECTION_ID = COALESCE(#{external_db_connection_id}, EXTERNAL_DB_CONNECTION_ID)
+        , WAREHOUSE_KEY = COALESCE(#{warehouse_key}, WAREHOUSE_KEY)
+        , UPDATED_BY = COALESCE(#{updated_by}, UPDATED_BY)
         , UPDATED_DATE = NOW()
     WHERE ID = #{id}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </update>
 
@@ -177,15 +177,15 @@
   <delete id="deleteDigitalTwinLayout" parameterType="map">
     DELETE FROM DIGITAL_TWIN_LAYOUT
     WHERE ID = #{id}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
   <!-- ========== 레이아웃 객체 전체 삭제 ========== -->
   <delete id="deleteDigitalTwinObjectsByLayoutId" parameterType="map">
     DELETE FROM DIGITAL_TWIN_OBJECTS
-    WHERE LAYOUT_ID = #{layoutId}
+    WHERE LAYOUT_ID = #{layout_id}
   </delete>
 
   <!-- ========== 매핑 템플릿 검색 조건 ========== -->
@@ -194,11 +194,11 @@
       AND (NAME ILIKE '%' || #{keyword} || '%'
            OR DESCRIPTION ILIKE '%' || #{keyword} || '%')
     </if>
-    <if test="externalDbConnectionId != null">
-      AND EXTERNAL_DB_CONNECTION_ID = #{externalDbConnectionId}
+    <if test="external_db_connection_id != null">
+      AND EXTERNAL_DB_CONNECTION_ID = #{external_db_connection_id}
     </if>
-    <if test="layoutType != null and layoutType != ''">
-      AND LAYOUT_TYPE = #{layoutType}
+    <if test="layout_type != null and layout_type != ''">
+      AND LAYOUT_TYPE = #{layout_type}
     </if>
   </sql>
 
@@ -243,15 +243,15 @@
         , UPDATED_BY
         , UPDATED_DATE
     ) VALUES (
-        #{companyCode}
+        #{company_code}
         , #{name}
         , #{description}
-        , #{externalDbConnectionId}
-        , COALESCE(#{layoutType}, 'yard-3d')
+        , #{external_db_connection_id}
+        , COALESCE(#{layout_type}, 'yard-3d')
         , #{config}::jsonb
-        , #{createdBy}
+        , #{created_by}
         , NOW()
-        , #{createdBy}
+        , #{created_by}
         , NOW()
     )
   </insert>
diff --git a/backend-spring/src/main/resources/mapper/driver.xml b/backend-spring/src/main/resources/mapper/driver.xml
index d3a3eba8..f8d2c448 100644
--- a/backend-spring/src/main/resources/mapper/driver.xml
+++ b/backend-spring/src/main/resources/mapper/driver.xml
@@ -30,9 +30,9 @@
     <include refid="driverSearchCondition"/>
 
     <choose>
-      <when test="sortColumn != null and sortColumn != ''">
+      <when test="sort_column != null and sort_column != ''">
         ORDER BY ${sortColumn}
-        <if test="sortDirection != null and sortDirection != ''">
+        <if test="sort_direction != null and sort_direction != ''">
           ${sortDirection}
         </if>
       </when>
@@ -67,7 +67,7 @@
 
     FROM USER_INFO
 
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </select>
 
   <!-- 차량 정보 조회 (user_id 기준) -->
@@ -83,7 +83,7 @@
 
     FROM VEHICLES
 
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </select>
 
   <!-- 사용자 정보 수정 -->
@@ -91,13 +91,13 @@
     UPDATE USER_INFO
 
     SET
-        USER_NAME      = COALESCE(#{userName},      USER_NAME)
-        , CELL_PHONE     = COALESCE(#{phoneNumber},   CELL_PHONE)
-        , LICENSE_NUMBER = COALESCE(#{licenseNumber}, LICENSE_NUMBER)
-        , VEHICLE_NUMBER = COALESCE(#{vehicleNumber}, VEHICLE_NUMBER)
-        , BRANCH_NAME    = COALESCE(#{branchName},    BRANCH_NAME)
+        USER_NAME      = COALESCE(#{user_name},      USER_NAME)
+        , CELL_PHONE     = COALESCE(#{phone_number},   CELL_PHONE)
+        , LICENSE_NUMBER = COALESCE(#{license_number}, LICENSE_NUMBER)
+        , VEHICLE_NUMBER = COALESCE(#{vehicle_number}, VEHICLE_NUMBER)
+        , BRANCH_NAME    = COALESCE(#{branch_name},    BRANCH_NAME)
 
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </update>
 
   <!-- 차량 정보 수정 -->
@@ -105,14 +105,14 @@
     UPDATE VEHICLES
 
     SET
-        VEHICLE_NUMBER = COALESCE(#{vehicleNumber}, VEHICLE_NUMBER)
-        , VEHICLE_TYPE   = COALESCE(#{vehicleType},   VEHICLE_TYPE)
-        , DRIVER_NAME    = COALESCE(#{userName},       DRIVER_NAME)
-        , DRIVER_PHONE   = COALESCE(#{phoneNumber},    DRIVER_PHONE)
-        , BRANCH_NAME    = COALESCE(#{branchName},     BRANCH_NAME)
+        VEHICLE_NUMBER = COALESCE(#{vehicle_number}, VEHICLE_NUMBER)
+        , VEHICLE_TYPE   = COALESCE(#{vehicle_type},   VEHICLE_TYPE)
+        , DRIVER_NAME    = COALESCE(#{user_name},       DRIVER_NAME)
+        , DRIVER_PHONE   = COALESCE(#{phone_number},    DRIVER_PHONE)
+        , BRANCH_NAME    = COALESCE(#{branch_name},     BRANCH_NAME)
         , UPDATED_DATE     = NOW()
 
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </update>
 
   <!-- 차량 상태 변경 (대기: off, 정비: maintenance) -->
@@ -123,7 +123,7 @@
         STATUS     = #{status}
         , UPDATED_DATE = NOW()
 
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </update>
 
   <!-- 차량 소프트 삭제 (user_id = NULL, status = 'disabled') -->
@@ -135,7 +135,7 @@
         , STATUS     = 'disabled'
         , UPDATED_DATE = NOW()
 
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </update>
 
   <!-- user_info.vehicle_number 초기화 -->
@@ -144,7 +144,7 @@
 
     SET VEHICLE_NUMBER = NULL
 
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </update>
 
   <!-- 새 차량 등록 -->
@@ -161,14 +161,14 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{vehicleNumber}
-        , #{vehicleType}
-        , #{userId}
-        , #{userName}
-        , #{phoneNumber}
-        , #{branchName}
+        #{vehicle_number}
+        , #{vehicle_type}
+        , #{user_id}
+        , #{user_name}
+        , #{phone_number}
+        , #{branch_name}
         , 'off'
-        , #{companyCode}
+        , #{company_code}
         , NOW()
         , NOW()
     )
@@ -178,14 +178,14 @@
   <delete id="deleteDriverVehicles" parameterType="map">
     DELETE FROM VEHICLES
 
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </delete>
 
   <!-- 사용자 계정 삭제 -->
   <delete id="deleteDriverUserInfo" parameterType="map">
     DELETE FROM USER_INFO
 
-    WHERE USER_ID = #{userId}
+    WHERE USER_ID = #{user_id}
   </delete>
 
 </mapper>
diff --git a/backend-spring/src/main/resources/mapper/dynamicForm.xml b/backend-spring/src/main/resources/mapper/dynamicForm.xml
index 8b7e4e27..05ea4377 100644
--- a/backend-spring/src/main/resources/mapper/dynamicForm.xml
+++ b/backend-spring/src/main/resources/mapper/dynamicForm.xml
@@ -30,18 +30,18 @@
             , CREATED_BY
             , UPDATED_BY
         FROM DYNAMIC_FORM_DATA
-        WHERE SCREEN_ID = #{screenId}
+        WHERE SCREEN_ID = #{screen_id}
         <if test="search != null and search != ''">
             AND (FORM_DATA::TEXT ILIKE #{search} OR TABLE_NAME ILIKE #{search})
         </if>
         ORDER BY
         <choose>
-            <when test='sortBy == "UPDATED_DATE"'>UPDATED_DATE</when>
-            <when test='sortBy == "id"'>ID</when>
+            <when test='sort_by == "UPDATED_DATE"'>UPDATED_DATE</when>
+            <when test='sort_by == "id"'>ID</when>
             <otherwise>CREATED_DATE</otherwise>
         </choose>
         <choose>
-            <when test='sortOrder == "asc"'>ASC</when>
+            <when test='sort_order == "asc"'>ASC</when>
             <otherwise>DESC</otherwise>
         </choose>
         LIMIT #{size} OFFSET #{offset}
@@ -51,7 +51,7 @@
         SELECT
             COUNT(*)
         FROM DYNAMIC_FORM_DATA
-        WHERE SCREEN_ID = #{screenId}
+        WHERE SCREEN_ID = #{screen_id}
         <if test="search != null and search != ''">
             AND (FORM_DATA::TEXT ILIKE #{search} OR TABLE_NAME ILIKE #{search})
         </if>
@@ -67,7 +67,7 @@
             , COLUMN_DEFAULT
             , CHARACTER_MAXIMUM_LENGTH
         FROM INFORMATION_SCHEMA.COLUMNS
-        WHERE TABLE_NAME = #{tableName}
+        WHERE TABLE_NAME = #{table_name}
           AND TABLE_SCHEMA = 'public'
         ORDER BY ORDINAL_POSITION
     </select>
@@ -78,7 +78,7 @@
         FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS TC
         JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU
           ON TC.CONSTRAINT_NAME = KCU.CONSTRAINT_NAME
-        WHERE TC.TABLE_NAME = #{tableName}
+        WHERE TC.TABLE_NAME = #{table_name}
           AND TC.CONSTRAINT_TYPE = 'PRIMARY KEY'
           AND TC.TABLE_SCHEMA = 'public'
     </select>
@@ -87,7 +87,7 @@
         SELECT
             COLUMN_NAME
         FROM INFORMATION_SCHEMA.COLUMNS
-        WHERE TABLE_NAME = #{tableName}
+        WHERE TABLE_NAME = #{table_name}
           AND TABLE_SCHEMA = 'public'
     </select>
 
@@ -96,7 +96,7 @@
             COLUMN_NAME
             , DATA_TYPE
         FROM INFORMATION_SCHEMA.COLUMNS
-        WHERE TABLE_NAME = #{tableName}
+        WHERE TABLE_NAME = #{table_name}
           AND TABLE_SCHEMA = 'public'
     </select>
 
@@ -104,7 +104,7 @@
         SELECT
             TABLE_TYPE
         FROM INFORMATION_SCHEMA.TABLES
-        WHERE TABLE_NAME = #{tableName}
+        WHERE TABLE_NAME = #{table_name}
           AND TABLE_SCHEMA = 'public'
         LIMIT 1
     </select>
@@ -113,7 +113,7 @@
         SELECT
             VIEW_DEFINITION
         FROM INFORMATION_SCHEMA.VIEWS
-        WHERE TABLE_NAME = #{tableName}
+        WHERE TABLE_NAME = #{table_name}
           AND TABLE_SCHEMA = 'public'
         LIMIT 1
     </select>
@@ -129,7 +129,7 @@
           ON KCU.COLUMN_NAME = C.COLUMN_NAME
          AND KCU.TABLE_NAME = C.TABLE_NAME
          AND C.TABLE_SCHEMA = 'public'
-        WHERE TC.TABLE_NAME = #{tableName}
+        WHERE TC.TABLE_NAME = #{table_name}
           AND TC.CONSTRAINT_TYPE = 'PRIMARY KEY'
           AND TC.TABLE_SCHEMA = 'public'
         LIMIT 1
@@ -157,22 +157,22 @@
             , RECORDED_AT
             , VEHICLE_ID
         ) VALUES (
-            #{userId}
-            , #{companyCode}
+            #{user_id}
+            , #{company_code}
             , #{latitude}
             , #{longitude}
             , #{accuracy}
             , #{altitude}
             , #{speed}
             , #{heading}
-            , #{tripId}
-            , #{tripStatus}
+            , #{trip_id}
+            , #{trip_status}
             , #{departure}
             , #{arrival}
-            , #{departureName}
-            , #{destinationName}
-            , #{recordedAt}
-            , #{vehicleId}
+            , #{departure_name}
+            , #{destination_name}
+            , #{recorded_at}
+            , #{vehicle_id}
         )
     </insert>
 
@@ -198,20 +198,20 @@
             , COMPANY_CODE
         FROM VEHICLE_LOCATION_HISTORY
         <where>
-            <if test='companyCode != null and companyCode != "*"'>
-                AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+            <if test='company_code != null and company_code != "*"'>
+                AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
             </if>
-            <if test="tripId != null">
-                AND TRIP_ID = #{tripId}
+            <if test="trip_id != null">
+                AND TRIP_ID = #{trip_id}
             </if>
-            <if test="userId != null">
-                AND USER_ID = #{userId}
+            <if test="user_id != null">
+                AND USER_ID = #{user_id}
             </if>
-            <if test="startDate != null">
-                AND RECORDED_AT &gt;= #{startDate}
+            <if test="start_date != null">
+                AND RECORDED_AT &gt;= #{start_date}
             </if>
-            <if test="endDate != null">
-                AND RECORDED_AT &lt;= #{endDate}
+            <if test="end_date != null">
+                AND RECORDED_AT &lt;= #{end_date}
             </if>
         </where>
         ORDER BY RECORDED_AT ASC
diff --git a/backend-spring/src/main/resources/mapper/entityJoin.xml b/backend-spring/src/main/resources/mapper/entityJoin.xml
index 72e0aabb..4633ee9c 100644
--- a/backend-spring/src/main/resources/mapper/entityJoin.xml
+++ b/backend-spring/src/main/resources/mapper/entityJoin.xml
@@ -16,12 +16,12 @@
 
     FROM table_type_columns
 
-    WHERE table_name = #{tableName}
+    WHERE table_name = #{table_name}
       AND input_type IN ('entity', 'category')
       AND reference_table IS NOT NULL
       AND reference_table != ''
-      <if test="companyCode != null and companyCode != &quot;&quot; and companyCode != &quot;*&quot;">
-        AND company_code IN (#{companyCode}, '*')
+      <if test="company_code != null and company_code != &quot;&quot; and company_code != &quot;*&quot;">
+        AND company_code IN (#{company_code}, '*')
       </if>
 
     ORDER BY column_name,
@@ -36,9 +36,9 @@
 
     FROM table_type_columns
 
-    WHERE table_name = #{tableName}
-      <if test="companyCode != null and companyCode != &quot;&quot; and companyCode != &quot;*&quot;">
-        AND company_code IN (#{companyCode}, '*')
+    WHERE table_name = #{table_name}
+      <if test="company_code != null and company_code != &quot;&quot; and company_code != &quot;*&quot;">
+        AND company_code IN (#{company_code}, '*')
       </if>
 
     ORDER BY column_name,
@@ -57,11 +57,11 @@
       display_order, is_visible, is_nullable, company_code,
       created_date, updated_date
     ) VALUES (
-      #{tableName}, #{columnName},
-      COALESCE(#{columnLabel}, #{columnName}),
-      COALESCE(#{webType}, 'text'),
-      #{referenceTable}, #{referenceColumn},
-      #{displayColumn}, #{description},
+      #{table_name}, #{column_name},
+      COALESCE(#{column_label}, #{column_name}),
+      COALESCE(#{web_type}, 'text'),
+      #{reference_table}, #{reference_column},
+      #{display_column}, #{description},
       0, TRUE, 'Y', '*',
       NOW(), NOW()
     )
@@ -84,7 +84,7 @@
     FROM information_schema.tables
 
     WHERE table_schema = 'public'
-      AND table_name   = #{tableName}
+      AND table_name   = #{table_name}
 
     LIMIT 1
   </select>
@@ -96,8 +96,8 @@
     FROM information_schema.columns
 
     WHERE table_schema = 'public'
-      AND table_name   = #{tableName}
-      AND column_name  = #{columnName}
+      AND table_name   = #{table_name}
+      AND column_name  = #{column_name}
 
     LIMIT 1
   </select>
@@ -109,7 +109,7 @@
     FROM information_schema.columns
 
     WHERE table_schema = 'public'
-      AND table_name   = #{tableName}
+      AND table_name   = #{table_name}
 
     ORDER BY ordinal_position
   </select>
diff --git a/backend-spring/src/main/resources/mapper/entityReference.xml b/backend-spring/src/main/resources/mapper/entityReference.xml
index 8a439c25..ca94a17f 100644
--- a/backend-spring/src/main/resources/mapper/entityReference.xml
+++ b/backend-spring/src/main/resources/mapper/entityReference.xml
@@ -13,8 +13,8 @@
 
     FROM table_type_columns
 
-    WHERE table_name  = #{tableName}
-      AND column_name = #{columnName}
+    WHERE table_name  = #{table_name}
+      AND column_name = #{column_name}
       AND company_code = '*'
 
     LIMIT 1
@@ -27,7 +27,7 @@
     FROM information_schema.tables
 
     WHERE table_schema = 'public'
-      AND table_name   = #{tableName}
+      AND table_name   = #{table_name}
   </select>
 
   <!-- company_code 컬럼 존재 여부 -->
@@ -37,7 +37,7 @@
     FROM information_schema.columns
 
     WHERE table_schema = 'public'
-      AND table_name   = #{tableName}
+      AND table_name   = #{table_name}
       AND column_name  = 'company_code'
   </select>
 
@@ -52,11 +52,11 @@
 
     FROM ${tableName}
     <where>
-      <if test='hasCompanyCode and companyCode != null and companyCode != "*"'>
-        (company_code = #{companyCode} OR company_code = '*')
+      <if test='has_company_code and company_code != null and company_code != "*"'>
+        (company_code = #{company_code} OR company_code = '*')
       </if>
-      <if test="searchLike != null">
-        AND ${displayColumn} ILIKE #{searchLike}
+      <if test="search_like != null">
+        AND ${displayColumn} ILIKE #{search_like}
       </if>
     </where>
 
@@ -70,13 +70,13 @@
 
     FROM code_info
 
-    WHERE code_category = #{codeCategory}
+    WHERE code_category = #{code_category}
       AND is_active     = 'Y'
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
-    <if test="searchLike != null">
-      AND code_name ILIKE #{searchLike}
+    <if test="search_like != null">
+      AND code_name ILIKE #{search_like}
     </if>
 
     ORDER BY code_name ASC
diff --git a/backend-spring/src/main/resources/mapper/entitySearch.xml b/backend-spring/src/main/resources/mapper/entitySearch.xml
index cade6981..ea7f0db2 100644
--- a/backend-spring/src/main/resources/mapper/entitySearch.xml
+++ b/backend-spring/src/main/resources/mapper/entitySearch.xml
@@ -13,7 +13,7 @@
     FROM information_schema.columns
 
     WHERE table_schema = 'public'
-      AND table_name = #{tableName}
+      AND table_name = #{table_name}
   </select>
 
   <!-- ================================================================
@@ -25,15 +25,15 @@
 
     FROM category_values
 
-    WHERE table_name = #{tableName}
-      AND column_name = #{columnName}
+    WHERE table_name = #{table_name}
+      AND column_name = #{column_name}
       AND value_code IN
       <foreach collection="rawValues" item="v" open="(" separator="," close=")">
         #{v}
       </foreach>
       AND is_active = TRUE
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </select>
 
@@ -46,8 +46,8 @@
 
     FROM table_type_columns
 
-    WHERE table_name = #{tableName}
-      AND column_name = #{columnName}
+    WHERE table_name = #{table_name}
+      AND column_name = #{column_name}
       AND code_category IS NOT NULL
 
     LIMIT 1
@@ -62,14 +62,14 @@
 
     FROM code_info
 
-    WHERE code_category = #{codeCategory}
+    WHERE code_category = #{code_category}
       AND code_value IN
       <foreach collection="rawValues" item="v" open="(" separator="," close=")">
         #{v}
       </foreach>
       AND is_active = 'Y'
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </select>
 
@@ -84,7 +84,7 @@
 
     JOIN pg_attribute a ON a.attrelid = i.indrelid AND a.attnum = ANY(i.indkey)
 
-    WHERE i.indrelid = #{tableName}::regclass
+    WHERE i.indrelid = #{table_name}::regclass
       AND i.indisprimary
 
     ORDER BY array_position(i.indkey, a.attnum)
@@ -103,7 +103,7 @@
     WHERE 1=1 ${whereClause}
 
     ORDER BY ${orderByColumn} DESC
-    LIMIT #{pageLimit} OFFSET #{pageOffset}
+    LIMIT #{page_limit} OFFSET #{page_offset}
   </select>
 
   <select id="getEntitySearchListCnt" parameterType="map" resultType="int">
diff --git a/backend-spring/src/main/resources/mapper/excelMapping.xml b/backend-spring/src/main/resources/mapper/excelMapping.xml
index b9bc4b95..0476bd4c 100644
--- a/backend-spring/src/main/resources/mapper/excelMapping.xml
+++ b/backend-spring/src/main/resources/mapper/excelMapping.xml
@@ -14,8 +14,8 @@
         , CREATED_DATE
         , UPDATED_DATE
     FROM EXCEL_MAPPING_TEMPLATE
-    WHERE TABLE_NAME = #{tableName}
-    AND EXCEL_COLUMNS_HASH = #{excelColumnsHash}
+    WHERE TABLE_NAME = #{table_name}
+    AND EXCEL_COLUMNS_HASH = #{excel_columns_hash}
     ORDER BY UPDATED_DATE DESC
     LIMIT 1
   </select>
@@ -31,11 +31,11 @@
         , CREATED_DATE
         , UPDATED_DATE
     FROM EXCEL_MAPPING_TEMPLATE
-    WHERE TABLE_NAME = #{tableName}
-    AND EXCEL_COLUMNS_HASH = #{excelColumnsHash}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE TABLE_NAME = #{table_name}
+    AND EXCEL_COLUMNS_HASH = #{excel_columns_hash}
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     ORDER BY
-        CASE WHEN COMPANY_CODE = #{companyCode} THEN 0 ELSE 1 END
+        CASE WHEN COMPANY_CODE = #{company_code} THEN 0 ELSE 1 END
         , UPDATED_DATE DESC
     LIMIT 1
   </select>
@@ -51,7 +51,7 @@
         , CREATED_DATE
         , UPDATED_DATE
     FROM EXCEL_MAPPING_TEMPLATE
-    WHERE TABLE_NAME = #{tableName}
+    WHERE TABLE_NAME = #{table_name}
     ORDER BY UPDATED_DATE DESC
   </select>
 
@@ -66,8 +66,8 @@
         , CREATED_DATE
         , UPDATED_DATE
     FROM EXCEL_MAPPING_TEMPLATE
-    WHERE TABLE_NAME = #{tableName}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE TABLE_NAME = #{table_name}
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     ORDER BY UPDATED_DATE DESC
   </select>
 
@@ -81,11 +81,11 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{tableName}
-        , #{excelColumns}::jsonb
-        , #{excelColumnsHash}
-        , #{columnMappings}::jsonb
-        , #{companyCode}
+        #{table_name}
+        , #{excel_columns}::jsonb
+        , #{excel_columns_hash}
+        , #{column_mappings}::jsonb
+        , #{company_code}
         , NOW()
         , NOW()
     )
@@ -103,7 +103,7 @@
   <delete id="deleteExcelMappingByCompany" parameterType="map">
     DELETE FROM EXCEL_MAPPING_TEMPLATE
     WHERE ID = #{id}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </delete>
 
 </mapper>
diff --git a/backend-spring/src/main/resources/mapper/externalCall.xml b/backend-spring/src/main/resources/mapper/externalCall.xml
index 130e40a5..077db3fd 100644
--- a/backend-spring/src/main/resources/mapper/externalCall.xml
+++ b/backend-spring/src/main/resources/mapper/externalCall.xml
@@ -18,16 +18,16 @@
         , COMPANY_CODE
         , CREATED_BY
     ) VALUES (
-        #{diagramId}
-        , #{relationshipId}
-        , #{callType}
-        , #{apiType}
+        #{diagram_id}
+        , #{relationship_id}
+        , #{call_type}
+        , #{api_type}
         , #{success}
-        , #{statusCode}
-        , #{errorMessage}
-        , #{executionTime}
-        , #{companyCode}
-        , #{createdBy}
+        , #{status_code}
+        , #{error_message}
+        , #{execution_time}
+        , #{company_code}
+        , #{created_by}
     )
   </insert>
   -->
diff --git a/backend-spring/src/main/resources/mapper/externalCallConfig.xml b/backend-spring/src/main/resources/mapper/externalCallConfig.xml
index 207af963..72f92273 100644
--- a/backend-spring/src/main/resources/mapper/externalCallConfig.xml
+++ b/backend-spring/src/main/resources/mapper/externalCallConfig.xml
@@ -89,7 +89,7 @@
             <otherwise>'{}'::JSONB</otherwise>
           </choose>
         , #{description}
-        , #{companyCode}
+        , #{company_code}
         , <choose>
             <when test="is_active != null">#{is_active}</when>
             <otherwise>'Y'</otherwise>
@@ -121,11 +121,11 @@
   <update id="deleteExternalCallConfig" parameterType="map">
     UPDATE EXTERNAL_CALL_CONFIGS
     SET IS_ACTIVE = 'N',
-        <if test="updatedBy != null">UPDATED_BY = #{updatedBy},</if>
+        <if test="updated_by != null">UPDATED_BY = #{updated_by},</if>
         UPDATED_DATE = NOW()
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </update>
 
diff --git a/backend-spring/src/main/resources/mapper/externalDbConnection.xml b/backend-spring/src/main/resources/mapper/externalDbConnection.xml
index c78a64b7..4dbac711 100644
--- a/backend-spring/src/main/resources/mapper/externalDbConnection.xml
+++ b/backend-spring/src/main/resources/mapper/externalDbConnection.xml
@@ -40,8 +40,8 @@
     LEFT JOIN COMPANY_MNG C
         ON E.COMPANY_CODE = C.COMPANY_CODE
     <where>
-      <if test="filterCompanyCode != null and filterCompanyCode != &quot;*&quot;">
-        AND (E.COMPANY_CODE = #{filterCompanyCode} OR E.COMPANY_CODE = '*')
+      <if test="filter_company_code != null and filter_company_code != &quot;*&quot;">
+        AND (E.COMPANY_CODE = #{filter_company_code} OR E.COMPANY_CODE = '*')
       </if>
       <if test="db_type != null and db_type != ''">
         AND E.DB_TYPE = #{db_type}
@@ -123,8 +123,8 @@
   <select id="getExternalDbConnectionByName" parameterType="map" resultType="map">
     SELECT ID
     FROM EXTERNAL_DB_CONNECTIONS
-    WHERE CONNECTION_NAME = #{connectionName}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE CONNECTION_NAME = #{connection_name}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     LIMIT 1
   </select>
 
@@ -132,9 +132,9 @@
   <select id="getExternalDbConnectionByNameExclude" parameterType="map" resultType="map">
     SELECT ID
     FROM EXTERNAL_DB_CONNECTIONS
-    WHERE CONNECTION_NAME = #{connectionName}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-      AND ID != #{excludeId}
+    WHERE CONNECTION_NAME = #{connection_name}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+      AND ID != #{exclude_id}
     LIMIT 1
   </select>
 
@@ -215,8 +215,8 @@
   <delete id="deleteExternalDbConnection" parameterType="map">
     DELETE FROM EXTERNAL_DB_CONNECTIONS
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
diff --git a/backend-spring/src/main/resources/mapper/externalRestApiConnection.xml b/backend-spring/src/main/resources/mapper/externalRestApiConnection.xml
index 69986a8b..9b4434e8 100644
--- a/backend-spring/src/main/resources/mapper/externalRestApiConnection.xml
+++ b/backend-spring/src/main/resources/mapper/externalRestApiConnection.xml
@@ -42,17 +42,17 @@
         ON E.COMPANY_CODE = C.COMPANY_CODE
     WHERE 1=1
     <!-- inline company_code filter: CommonMapper.companyCodeFilter 사용 불가 (JOIN 시 컬럼명 ambiguous) -->
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (E.COMPANY_CODE = #{companyCode} OR E.COMPANY_CODE = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (E.COMPANY_CODE = #{company_code} OR E.COMPANY_CODE = '*')
     </if>
-    <if test='companyCode == "*" and filterCompanyCode != null and filterCompanyCode != ""'>
-      AND (E.COMPANY_CODE = #{filterCompanyCode} OR E.COMPANY_CODE = '*')
+    <if test='company_code == "*" and filter_company_code != null and filter_company_code != ""'>
+      AND (E.COMPANY_CODE = #{filter_company_code} OR E.COMPANY_CODE = '*')
     </if>
-    <if test="isActive != null and isActive != ''">
-      AND E.IS_ACTIVE = #{isActive}
+    <if test="is_active != null and is_active != ''">
+      AND E.IS_ACTIVE = #{is_active}
     </if>
-    <if test="authType != null and authType != ''">
-      AND E.AUTH_TYPE = #{authType}
+    <if test="auth_type != null and auth_type != ''">
+      AND E.AUTH_TYPE = #{auth_type}
     </if>
     <if test="search != null and search != ''">
       AND (
@@ -93,22 +93,22 @@
         , CREATED_BY
         , SAVE_TO_HISTORY
     ) VALUES (
-        #{connectionName}
+        #{connection_name}
         , #{description}
-        , #{baseUrl}
-        , #{endpointPath}
-        , #{defaultHeaders,jdbcType=OTHER}::JSONB
-        , #{defaultMethod}
-        , #{defaultBody}
-        , #{authType}
-        , #{authConfig,jdbcType=OTHER}::JSONB
+        , #{base_url}
+        , #{endpoint_path}
+        , #{default_headers,jdbcType=OTHER}::JSONB
+        , #{default_method}
+        , #{default_body}
+        , #{auth_type}
+        , #{auth_config,jdbcType=OTHER}::JSONB
         , #{timeout}
-        , #{retryCount}
-        , #{retryDelay}
-        , #{companyCode}
-        , #{isActive}
-        , #{createdBy}
-        , #{saveToHistory}
+        , #{retry_count}
+        , #{retry_delay}
+        , #{company_code}
+        , #{is_active}
+        , #{created_by}
+        , #{save_to_history}
     )
   </insert>
 
@@ -117,21 +117,21 @@
     UPDATE EXTERNAL_REST_API_CONNECTIONS
     <set>
       UPDATED_DATE = NOW(),
-      <if test="connectionName != null">CONNECTION_NAME = #{connectionName},</if>
+      <if test="connection_name != null">CONNECTION_NAME = #{connection_name},</if>
       <if test="description != null">DESCRIPTION = #{description},</if>
-      <if test="baseUrl != null">BASE_URL = #{baseUrl},</if>
-      <if test="endpointPath != null">ENDPOINT_PATH = #{endpointPath},</if>
-      <if test="defaultHeaders != null">DEFAULT_HEADERS = #{defaultHeaders,jdbcType=OTHER}::JSONB,</if>
-      <if test="defaultMethod != null">DEFAULT_METHOD = #{defaultMethod},</if>
-      <if test="hasDefaultBody != null">DEFAULT_REQUEST_BODY = #{defaultBody},</if>
-      <if test="authType != null">AUTH_TYPE = #{authType},</if>
-      <if test="authConfig != null">AUTH_CONFIG = #{authConfig,jdbcType=OTHER}::JSONB,</if>
+      <if test="base_url != null">BASE_URL = #{base_url},</if>
+      <if test="endpoint_path != null">ENDPOINT_PATH = #{endpoint_path},</if>
+      <if test="default_headers != null">DEFAULT_HEADERS = #{default_headers,jdbcType=OTHER}::JSONB,</if>
+      <if test="default_method != null">DEFAULT_METHOD = #{default_method},</if>
+      <if test="has_default_body != null">DEFAULT_REQUEST_BODY = #{default_body},</if>
+      <if test="auth_type != null">AUTH_TYPE = #{auth_type},</if>
+      <if test="auth_config != null">AUTH_CONFIG = #{auth_config,jdbcType=OTHER}::JSONB,</if>
       <if test="timeout != null">TIMEOUT = #{timeout},</if>
-      <if test="retryCount != null">RETRY_COUNT = #{retryCount},</if>
-      <if test="retryDelay != null">RETRY_DELAY = #{retryDelay},</if>
-      <if test="isActive != null">IS_ACTIVE = #{isActive},</if>
-      <if test="saveToHistory != null">SAVE_TO_HISTORY = #{saveToHistory},</if>
-      <if test="updatedBy != null">UPDATED_BY = #{updatedBy},</if>
+      <if test="retry_count != null">RETRY_COUNT = #{retry_count},</if>
+      <if test="retry_delay != null">RETRY_DELAY = #{retry_delay},</if>
+      <if test="is_active != null">IS_ACTIVE = #{is_active},</if>
+      <if test="save_to_history != null">SAVE_TO_HISTORY = #{save_to_history},</if>
+      <if test="updated_by != null">UPDATED_BY = #{updated_by},</if>
     </set>
     WHERE ID = #{id}
     <include refid="common.companyCodeFilter"/>
@@ -149,8 +149,8 @@
     UPDATE EXTERNAL_REST_API_CONNECTIONS
     SET
         LAST_TEST_DATE = NOW()
-        , LAST_TEST_RESULT = #{lastTestResult}
-        , LAST_TEST_MESSAGE = #{lastTestMessage}
+        , LAST_TEST_RESULT = #{last_test_result}
+        , LAST_TEST_MESSAGE = #{last_test_message}
     WHERE ID = #{id}
   </update>
 
@@ -159,9 +159,9 @@
   <select id="getExternalRestApiConnectionDbToken" parameterType="map" resultType="map">
     SELECT ${valueColumn} AS TOKEN_VALUE
     FROM ${tableName}
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-    <if test="whereColumn != null and whereValue != null">
-      AND ${whereColumn} = #{whereValue}
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+    <if test="where_column != null and where_value != null">
+      AND ${whereColumn} = #{where_value}
     </if>
     ORDER BY UPDATED_DATE DESC
     LIMIT 1
diff --git a/backend-spring/src/main/resources/mapper/file.xml b/backend-spring/src/main/resources/mapper/file.xml
index 1643d6a5..a2ee3f43 100644
--- a/backend-spring/src/main/resources/mapper/file.xml
+++ b/backend-spring/src/main/resources/mapper/file.xml
@@ -4,8 +4,8 @@
 <mapper namespace="file">
 
   <sql id="fileSearchCondition">
-    <if test="targetObjid != null and targetObjid != ''">
-      AND TARGET_OBJID LIKE #{targetObjid} || '%'
+    <if test="target_objid != null and target_objid != ''">
+      AND TARGET_OBJID LIKE #{target_objid} || '%'
     </if>
     <if test="status != null and status != ''">
       AND STATUS = #{status}
@@ -91,30 +91,30 @@
         , IS_REPRESENTATIVE
     ) VALUES (
         #{objid}
-        , #{targetObjid}
-        , #{savedFileName}
-        , #{realFileName}
-        , #{docType}
-        , #{docTypeName}
-        , #{fileSize}
-        , #{fileExt}
-        , #{filePath}
-        , #{companyCode}
+        , #{target_objid}
+        , #{saved_file_name}
+        , #{real_file_name}
+        , #{doc_type}
+        , #{doc_type_name}
+        , #{file_size}
+        , #{file_ext}
+        , #{file_path}
+        , #{company_code}
         , #{writer}
         , NOW()
         , COALESCE(#{status}, 'ACTIVE')
-        , #{parentTargetObjid}
-        , COALESCE(#{isRepresentative}, FALSE)
+        , #{parent_target_objid}
+        , COALESCE(#{is_representative}, FALSE)
     )
   </insert>
 
   <update id="updateFile" parameterType="map">
     UPDATE ATTACH_FILE_INFO
     SET
-        DOC_TYPE = COALESCE(#{docType}, DOC_TYPE)
-        , DOC_TYPE_NAME = COALESCE(#{docTypeName}, DOC_TYPE_NAME)
-        , TARGET_OBJID = COALESCE(#{targetObjid}, TARGET_OBJID)
-        , IS_REPRESENTATIVE = COALESCE(#{isRepresentative}, IS_REPRESENTATIVE)
+        DOC_TYPE = COALESCE(#{doc_type}, DOC_TYPE)
+        , DOC_TYPE_NAME = COALESCE(#{doc_type_name}, DOC_TYPE_NAME)
+        , TARGET_OBJID = COALESCE(#{target_objid}, TARGET_OBJID)
+        , IS_REPRESENTATIVE = COALESCE(#{is_representative}, IS_REPRESENTATIVE)
     WHERE OBJID = #{objid}
     <include refid="common.companyCodeFilter"/>
   </update>
@@ -143,7 +143,7 @@
         , STATUS
         , IS_REPRESENTATIVE
     FROM ATTACH_FILE_INFO
-    WHERE TARGET_OBJID LIKE #{targetObjid} || '%'
+    WHERE TARGET_OBJID LIKE #{target_objid} || '%'
       AND STATUS = 'ACTIVE'
     <include refid="common.companyCodeFilter"/>
     ORDER BY CREATED_DATE DESC
diff --git a/backend-spring/src/main/resources/mapper/flow.xml b/backend-spring/src/main/resources/mapper/flow.xml
index 8e886ccd..35a2eedb 100644
--- a/backend-spring/src/main/resources/mapper/flow.xml
+++ b/backend-spring/src/main/resources/mapper/flow.xml
@@ -12,11 +12,11 @@
     FROM FLOW_DEFINITIONS
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
-    <if test="tableName != null and tableName != ''">
-      AND TABLE_NAME = #{tableName}
+    <if test="table_name != null and table_name != ''">
+      AND TABLE_NAME = #{table_name}
     </if>
-    <if test="isActive != null">
-      AND IS_ACTIVE = #{isActive}
+    <if test="is_active != null">
+      AND IS_ACTIVE = #{is_active}
     </if>
     ORDER BY CREATED_DATE DESC
   </select>
@@ -50,20 +50,20 @@
     ) VALUES (
         #{name}
         , #{description}
-        , #{tableName}
-        , #{dbSourceType}
-        , #{dbConnectionId}
-        , #{restApiConnectionId}
-        , #{restApiEndpoint}
-        , #{restApiJsonPath}
+        , #{table_name}
+        , #{db_source_type}
+        , #{db_connection_id}
+        , #{rest_api_connection_id}
+        , #{rest_api_endpoint}
+        , #{rest_api_json_path}
         , <choose>
-            <when test="restApiConnections != null">#{restApiConnections}::JSONB</when>
+            <when test="rest_api_connections != null">#{rest_api_connections}::JSONB</when>
             <otherwise>NULL</otherwise>
           </choose>
-        , #{companyCode}
-        , COALESCE(#{isActive}, TRUE)
-        , #{createdBy}
-        , #{createdBy}
+        , #{company_code}
+        , COALESCE(#{is_active}, TRUE)
+        , #{created_by}
+        , #{created_by}
         , NOW()
         , NOW()
     )
@@ -75,7 +75,7 @@
       UPDATED_DATE = NOW(),
       <if test="name != null">NAME = #{name},</if>
       <if test="description != null">DESCRIPTION = #{description},</if>
-      <if test="isActive != null">IS_ACTIVE = #{isActive},</if>
+      <if test="is_active != null">IS_ACTIVE = #{is_active},</if>
     </set>
     WHERE ID = #{id}
     <include refid="common.companyCodeFilter"/>
@@ -92,7 +92,7 @@
         COUNT(*)
     FROM INFORMATION_SCHEMA.TABLES
     WHERE TABLE_SCHEMA = 'public'
-      AND TABLE_NAME = #{tableName}
+      AND TABLE_NAME = #{table_name}
   </select>
 
   <!-- ═══════════════════════════════════════════════════════
@@ -102,7 +102,7 @@
   <select id="getFlowStepList" parameterType="map" resultType="map">
     SELECT *
     FROM FLOW_STEPS
-    WHERE FLOW_DEFINITION_ID = #{flowId}
+    WHERE FLOW_DEFINITION_ID = #{flow_id}
     ORDER BY STEP_ORDER ASC
   </select>
 
@@ -135,32 +135,32 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{flowDefinitionId}
-        , #{stepName}
-        , #{stepOrder}
-        , #{tableName}
+        #{flow_definition_id}
+        , #{step_name}
+        , #{step_order}
+        , #{table_name}
         , <choose>
-            <when test="conditionJson != null">#{conditionJson}::JSONB</when>
+            <when test="condition_json != null">#{condition_json}::JSONB</when>
             <otherwise>NULL</otherwise>
           </choose>
         , #{color}
-        , #{positionX}
-        , #{positionY}
-        , #{moveType}
-        , #{statusColumn}
-        , #{statusValue}
-        , #{targetTable}
+        , #{position_x}
+        , #{position_y}
+        , #{move_type}
+        , #{status_column}
+        , #{status_value}
+        , #{target_table}
         , <choose>
-            <when test="fieldMappings != null">#{fieldMappings}::JSONB</when>
+            <when test="field_mappings != null">#{field_mappings}::JSONB</when>
             <otherwise>NULL</otherwise>
           </choose>
-        , #{integrationType}
+        , #{integration_type}
         , <choose>
-            <when test="integrationConfig != null">#{integrationConfig}::JSONB</when>
+            <when test="integration_config != null">#{integration_config}::JSONB</when>
             <otherwise>NULL</otherwise>
           </choose>
         , <choose>
-            <when test="displayConfig != null">#{displayConfig}::JSONB</when>
+            <when test="display_config != null">#{display_config}::JSONB</when>
             <otherwise>NULL</otherwise>
           </choose>
         , NOW()
@@ -172,21 +172,21 @@
     UPDATE FLOW_STEPS
     <set>
       UPDATED_DATE = NOW(),
-      <if test="stepName       != null">STEP_NAME = #{stepName},</if>
-      <if test="stepOrder      != null">STEP_ORDER = #{stepOrder},</if>
-      <if test="tableName      != null">TABLE_NAME = #{tableName},</if>
-      <if test="conditionJson  != null">CONDITION_JSON = #{conditionJson}::JSONB,</if>
+      <if test="step_name       != null">STEP_NAME = #{step_name},</if>
+      <if test="step_order      != null">STEP_ORDER = #{step_order},</if>
+      <if test="table_name      != null">TABLE_NAME = #{table_name},</if>
+      <if test="condition_json  != null">CONDITION_JSON = #{condition_json}::JSONB,</if>
       <if test="color          != null">COLOR = #{color},</if>
-      <if test="positionX      != null">POSITION_X = #{positionX},</if>
-      <if test="positionY      != null">POSITION_Y = #{positionY},</if>
-      <if test="moveType       != null">MOVE_TYPE = #{moveType},</if>
-      <if test="statusColumn   != null">STATUS_COLUMN = #{statusColumn},</if>
-      <if test="statusValue    != null">STATUS_VALUE = #{statusValue},</if>
-      <if test="targetTable    != null">TARGET_TABLE = #{targetTable},</if>
-      <if test="fieldMappings  != null">FIELD_MAPPINGS = #{fieldMappings}::JSONB,</if>
-      <if test="integrationType!= null">INTEGRATION_TYPE = #{integrationType},</if>
-      <if test="integrationConfig != null">INTEGRATION_CONFIG = #{integrationConfig}::JSONB,</if>
-      <if test="displayConfig  != null">DISPLAY_CONFIG = #{displayConfig}::JSONB,</if>
+      <if test="position_x      != null">POSITION_X = #{position_x},</if>
+      <if test="position_y      != null">POSITION_Y = #{position_y},</if>
+      <if test="move_type       != null">MOVE_TYPE = #{move_type},</if>
+      <if test="status_column   != null">STATUS_COLUMN = #{status_column},</if>
+      <if test="status_value    != null">STATUS_VALUE = #{status_value},</if>
+      <if test="target_table    != null">TARGET_TABLE = #{target_table},</if>
+      <if test="field_mappings  != null">FIELD_MAPPINGS = #{field_mappings}::JSONB,</if>
+      <if test="integration_type!= null">INTEGRATION_TYPE = #{integration_type},</if>
+      <if test="integration_config != null">INTEGRATION_CONFIG = #{integration_config}::JSONB,</if>
+      <if test="display_config  != null">DISPLAY_CONFIG = #{display_config}::JSONB,</if>
     </set>
     WHERE ID = #{id}
   </update>
@@ -203,7 +203,7 @@
   <select id="getFlowConnectionList" parameterType="map" resultType="map">
     SELECT *
     FROM FLOW_CONNECTIONS
-    WHERE FLOW_DEFINITION_ID = #{flowId}
+    WHERE FLOW_DEFINITION_ID = #{flow_id}
     ORDER BY ID ASC
   </select>
 
@@ -223,9 +223,9 @@
         , LABEL
         , CREATED_DATE
     ) VALUES (
-        #{flowDefinitionId}
-        , #{fromStepId}
-        , #{toStepId}
+        #{flow_definition_id}
+        , #{from_step_id}
+        , #{to_step_id}
         , #{label}
         , NOW()
     )
@@ -247,8 +247,8 @@
         COUNT(*)
     FROM ${tableName}
     WHERE 1=1
-    <if test="statusColumn != null and statusValue != null">
-      AND ${statusColumn} = #{statusValue}
+    <if test="status_column != null and status_value != null">
+      AND ${statusColumn} = #{status_value}
     </if>
   </select>
 
@@ -256,8 +256,8 @@
     SELECT *
     FROM ${tableName}
     WHERE 1=1
-    <if test="statusColumn != null and statusValue != null">
-      AND ${statusColumn} = #{statusValue}
+    <if test="status_column != null and status_value != null">
+      AND ${statusColumn} = #{status_value}
     </if>
     ORDER BY ID DESC
     <include refid="common.pagination"/>
@@ -268,7 +268,7 @@
         COLUMN_NAME
         , COLUMN_LABEL
     FROM TABLE_TYPE_COLUMNS
-    WHERE TABLE_NAME = #{tableName}
+    WHERE TABLE_NAME = #{table_name}
       AND COLUMN_LABEL IS NOT NULL
       AND COMPANY_CODE = '*'
   </select>
@@ -279,8 +279,8 @@
   -->
   <update id="updateFlowRecordStatus" parameterType="map">
     UPDATE ${tableName}
-    SET ${statusColumn} = #{toStatusValue}
-    WHERE ID = #{recordId}
+    SET ${statusColumn} = #{to_status_value}
+    WHERE ID = #{record_id}
   </update>
 
   <!-- ═══════════════════════════════════════════════════════
@@ -290,15 +290,15 @@
   <select id="getFlowAuditLogListByRecord" parameterType="map" resultType="map">
     SELECT *
     FROM FLOW_STEP_AUDIT_LOGS
-    WHERE FLOW_DEFINITION_ID = #{flowId}
-      AND RECORD_ID = #{recordId}
+    WHERE FLOW_DEFINITION_ID = #{flow_id}
+      AND RECORD_ID = #{record_id}
     ORDER BY CREATED_DATE DESC
   </select>
 
   <select id="getFlowAuditLogList" parameterType="map" resultType="map">
     SELECT *
     FROM FLOW_STEP_AUDIT_LOGS
-    WHERE FLOW_DEFINITION_ID = #{flowId}
+    WHERE FLOW_DEFINITION_ID = #{flow_id}
     ORDER BY CREATED_DATE DESC
     <if test="limit != null">
       LIMIT #{limit}
@@ -318,13 +318,13 @@
         , METADATA
         , CREATED_DATE
     ) VALUES (
-        #{flowDefinitionId}
-        , #{recordId}
-        , #{fromStepId}
-        , #{toStepId}
-        , #{fromStepName}
-        , #{toStepName}
-        , #{movedBy}
+        #{flow_definition_id}
+        , #{record_id}
+        , #{from_step_id}
+        , #{to_step_id}
+        , #{from_step_name}
+        , #{to_step_name}
+        , #{moved_by}
         , #{note}
         , <choose>
             <when test="metadata != null">#{metadata}::JSONB</when>
diff --git a/backend-spring/src/main/resources/mapper/flowExternalDbConnection.xml b/backend-spring/src/main/resources/mapper/flowExternalDbConnection.xml
index 8c74518c..c0709cda 100644
--- a/backend-spring/src/main/resources/mapper/flowExternalDbConnection.xml
+++ b/backend-spring/src/main/resources/mapper/flowExternalDbConnection.xml
@@ -28,7 +28,7 @@
         , UPDATED_DATE
     FROM FLOW_EXTERNAL_DB_CONNECTION
     <where>
-      <if test="activeOnly == true">
+      <if test="active_only == true">
         IS_ACTIVE = TRUE
       </if>
     </where>
@@ -74,16 +74,16 @@
     ) VALUES (
         #{name}
         , #{description}
-        , #{dbType}
+        , #{db_type}
         , #{host}
         , #{port}
-        , #{databaseName}
+        , #{database_name}
         , #{username}
-        , #{passwordEncrypted}
-        , #{sslEnabled}
-        , #{connectionOptions}::JSONB
-        , #{createdBy}
-        , #{updatedBy}
+        , #{password_encrypted}
+        , #{ssl_enabled}
+        , #{connection_options}::JSONB
+        , #{created_by}
+        , #{updated_by}
     )
   </insert>
 
@@ -95,13 +95,13 @@
       <if test="description != null">DESCRIPTION = #{description},</if>
       <if test="host != null">HOST = #{host},</if>
       <if test="port != null">PORT = #{port},</if>
-      <if test="databaseName != null">DATABASE_NAME = #{databaseName},</if>
+      <if test="database_name != null">DATABASE_NAME = #{database_name},</if>
       <if test="username != null">USERNAME = #{username},</if>
-      <if test="passwordEncrypted != null">PASSWORD_ENCRYPTED = #{passwordEncrypted},</if>
-      <if test="sslEnabled != null">SSL_ENABLED = #{sslEnabled},</if>
-      <if test="connectionOptions != null">CONNECTION_OPTIONS = #{connectionOptions}::JSONB,</if>
-      <if test="isActive != null">IS_ACTIVE = #{isActive},</if>
-      UPDATED_BY = #{updatedBy},
+      <if test="password_encrypted != null">PASSWORD_ENCRYPTED = #{password_encrypted},</if>
+      <if test="ssl_enabled != null">SSL_ENABLED = #{ssl_enabled},</if>
+      <if test="connection_options != null">CONNECTION_OPTIONS = #{connection_options}::JSONB,</if>
+      <if test="is_active != null">IS_ACTIVE = #{is_active},</if>
+      UPDATED_BY = #{updated_by},
       UPDATED_DATE = NOW()
     </set>
     WHERE ID = #{id}
diff --git a/backend-spring/src/main/resources/mapper/layout.xml b/backend-spring/src/main/resources/mapper/layout.xml
index c7a96e02..6f1106cf 100644
--- a/backend-spring/src/main/resources/mapper/layout.xml
+++ b/backend-spring/src/main/resources/mapper/layout.xml
@@ -6,8 +6,8 @@
   <!--
     LAYOUT_STANDARDS 공통 WHERE 절
     - IS_ACTIVE = 'Y' 필수
-    - includePublic=true  → (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*') OR IS_PUBLIC = 'Y'
-    - includePublic=false → (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*') 만
+    - includePublic=true  → (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*') OR IS_PUBLIC = 'Y'
+    - includePublic=false → (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*') 만
     - 검색: CATEGORY / LAYOUT_TYPE / SEARCH_TERM 옵션
     ※ CompanyCodeFilter 공통 fragment 대신 커스텀 SQL 사용:
       IS_PUBLIC 조건이 추가되므로 CommonMapper.companyCodeFilter 와 로직이 다름.
@@ -15,23 +15,23 @@
   <sql id="layoutWhereClause">
     WHERE IS_ACTIVE = 'Y'
     <choose>
-      <when test="includePublic == true">
-        AND ((COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*') OR IS_PUBLIC = 'Y')
+      <when test="include_public == true">
+        AND ((COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*') OR IS_PUBLIC = 'Y')
       </when>
       <otherwise>
-        AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+        AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       </otherwise>
     </choose>
     <if test="category != null and category != ''">
       AND CATEGORY = #{category}
     </if>
-    <if test="layoutType != null and layoutType != ''">
-      AND LAYOUT_TYPE = #{layoutType}
+    <if test="layout_type != null and layout_type != ''">
+      AND LAYOUT_TYPE = #{layout_type}
     </if>
-    <if test="searchTerm != null and searchTerm != ''">
-      AND (LAYOUT_NAME      ILIKE '%' || #{searchTerm} || '%'
-        OR LAYOUT_NAME_ENG  ILIKE '%' || #{searchTerm} || '%'
-        OR DESCRIPTION      ILIKE '%' || #{searchTerm} || '%')
+    <if test="search_term != null and search_term != ''">
+      AND (LAYOUT_NAME      ILIKE '%' || #{search_term} || '%'
+        OR LAYOUT_NAME_ENG  ILIKE '%' || #{search_term} || '%'
+        OR DESCRIPTION      ILIKE '%' || #{search_term} || '%')
     </if>
   </sql>
 
@@ -55,9 +55,9 @@
   <select id="selectLayoutByCode" parameterType="map" resultType="map">
     SELECT *
     FROM LAYOUT_STANDARDS
-    WHERE LAYOUT_CODE = #{layoutCode}
+    WHERE LAYOUT_CODE = #{layout_code}
       AND IS_ACTIVE = 'Y'
-      AND ((COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*') OR IS_PUBLIC = 'Y')
+      AND ((COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*') OR IS_PUBLIC = 'Y')
     LIMIT 1
   </select>
 
@@ -65,8 +65,8 @@
   <select id="selectLayoutByCodeAndCompany" parameterType="map" resultType="map">
     SELECT *
     FROM LAYOUT_STANDARDS
-    WHERE LAYOUT_CODE  = #{layoutCode}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE LAYOUT_CODE  = #{layout_code}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       AND IS_ACTIVE    = 'Y'
     LIMIT 1
   </select>
@@ -85,21 +85,21 @@
       ICON_NAME, DEFAULT_SIZE, LAYOUT_CONFIG, ZONES_CONFIG, IS_PUBLIC, IS_ACTIVE,
       COMPANY_CODE, CREATED_BY, UPDATED_BY, CREATED_DATE, UPDATED_DATE, SORT_ORDER
     ) VALUES (
-      #{layoutCode}, #{layoutName}, #{layoutNameEng}, #{description}, #{layoutType}, #{category},
-      #{iconName},
+      #{layout_code}, #{layout_name}, #{layout_name_eng}, #{description}, #{layout_type}, #{category},
+      #{icon_name},
       <choose>
-        <when test="defaultSize != null">#{defaultSize}::JSONB</when>
+        <when test="default_size != null">#{default_size}::JSONB</when>
         <otherwise>NULL</otherwise>
       </choose>,
       <choose>
-        <when test="layoutConfig != null">#{layoutConfig}::JSONB</when>
+        <when test="layout_config != null">#{layout_config}::JSONB</when>
         <otherwise>NULL</otherwise>
       </choose>,
       <choose>
-        <when test="zonesConfig != null">#{zonesConfig}::JSONB</when>
+        <when test="zones_config != null">#{zones_config}::JSONB</when>
         <otherwise>NULL</otherwise>
       </choose>,
-      #{isPublic}, 'Y', #{companyCode}, #{userId}, #{userId}, NOW(), NOW(), 0
+      #{is_public}, 'Y', #{company_code}, #{user_id}, #{user_id}, NOW(), NOW(), 0
     )
   </insert>
 
@@ -107,21 +107,21 @@
   <update id="updateLayout" parameterType="map">
     UPDATE LAYOUT_STANDARDS
     <set>
-      UPDATED_BY   = #{userId},
+      UPDATED_BY   = #{user_id},
       UPDATED_DATE = NOW(),
-      <if test="layoutName    != null">LAYOUT_NAME     = #{layoutName},</if>
-      <if test="layoutNameEng != null">LAYOUT_NAME_ENG = #{layoutNameEng},</if>
+      <if test="layout_name    != null">LAYOUT_NAME     = #{layout_name},</if>
+      <if test="layout_name_eng != null">LAYOUT_NAME_ENG = #{layout_name_eng},</if>
       <if test="description   != null">DESCRIPTION     = #{description},</if>
-      <if test="layoutType    != null">LAYOUT_TYPE     = #{layoutType},</if>
+      <if test="layout_type    != null">LAYOUT_TYPE     = #{layout_type},</if>
       <if test="category      != null">CATEGORY        = #{category},</if>
-      <if test="iconName      != null">ICON_NAME       = #{iconName},</if>
-      <if test="defaultSize   != null">DEFAULT_SIZE    = #{defaultSize}::JSONB,</if>
-      <if test="layoutConfig  != null">LAYOUT_CONFIG   = #{layoutConfig}::JSONB,</if>
-      <if test="zonesConfig   != null">ZONES_CONFIG    = #{zonesConfig}::JSONB,</if>
-      <if test="isPublic      != null">IS_PUBLIC       = #{isPublic},</if>
+      <if test="icon_name      != null">ICON_NAME       = #{icon_name},</if>
+      <if test="default_size   != null">DEFAULT_SIZE    = #{default_size}::JSONB,</if>
+      <if test="layout_config  != null">LAYOUT_CONFIG   = #{layout_config}::JSONB,</if>
+      <if test="zones_config   != null">ZONES_CONFIG    = #{zones_config}::JSONB,</if>
+      <if test="is_public      != null">IS_PUBLIC       = #{is_public},</if>
     </set>
-    WHERE LAYOUT_CODE  = #{layoutCode}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE LAYOUT_CODE  = #{layout_code}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       AND IS_ACTIVE    = 'Y'
   </update>
 
@@ -129,10 +129,10 @@
   <update id="softDeleteLayout" parameterType="map">
     UPDATE LAYOUT_STANDARDS
     SET IS_ACTIVE    = 'N',
-        UPDATED_BY   = #{userId},
+        UPDATED_BY   = #{user_id},
         UPDATED_DATE = NOW()
-    WHERE LAYOUT_CODE  = #{layoutCode}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE LAYOUT_CODE  = #{layout_code}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       AND IS_ACTIVE    = 'Y'
   </update>
 
@@ -141,7 +141,7 @@
     SELECT CATEGORY, COUNT(*) AS COUNT
     FROM LAYOUT_STANDARDS
     WHERE IS_ACTIVE = 'Y'
-      AND ((COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*') OR IS_PUBLIC = 'Y')
+      AND ((COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*') OR IS_PUBLIC = 'Y')
     GROUP BY CATEGORY
   </select>
 
diff --git a/backend-spring/src/main/resources/mapper/mailAccountFile.xml b/backend-spring/src/main/resources/mapper/mailAccountFile.xml
index f3617047..4127437b 100644
--- a/backend-spring/src/main/resources/mapper/mailAccountFile.xml
+++ b/backend-spring/src/main/resources/mapper/mailAccountFile.xml
@@ -74,15 +74,15 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{companyCode}
+        #{company_code}
         , #{name,           jdbcType=VARCHAR}
         , #{email,          jdbcType=VARCHAR}
-        , #{smtpHost,       jdbcType=VARCHAR}
-        , #{smtpPort,       jdbcType=INTEGER}
-        , #{smtpSecure,     jdbcType=BOOLEAN}
-        , #{smtpUsername,   jdbcType=VARCHAR}
-        , #{smtpPassword,   jdbcType=VARCHAR}
-        , #{dailyLimit,     jdbcType=INTEGER}
+        , #{smtp_host,       jdbcType=VARCHAR}
+        , #{smtp_port,       jdbcType=INTEGER}
+        , #{smtp_secure,     jdbcType=BOOLEAN}
+        , #{smtp_username,   jdbcType=VARCHAR}
+        , #{smtp_password,   jdbcType=VARCHAR}
+        , #{daily_limit,     jdbcType=INTEGER}
         , #{status,         jdbcType=VARCHAR}
         , NOW()
         , NOW()
@@ -94,12 +94,12 @@
     SET
         NAME          = COALESCE(#{name,         jdbcType=VARCHAR}, NAME)
         , EMAIL         = COALESCE(#{email,        jdbcType=VARCHAR}, EMAIL)
-        , SMTP_HOST     = COALESCE(#{smtpHost,     jdbcType=VARCHAR}, SMTP_HOST)
-        , SMTP_PORT     = COALESCE(#{smtpPort,     jdbcType=INTEGER}, SMTP_PORT)
-        , SMTP_SECURE   = COALESCE(#{smtpSecure,   jdbcType=BOOLEAN}, SMTP_SECURE)
-        , SMTP_USERNAME = COALESCE(#{smtpUsername, jdbcType=VARCHAR}, SMTP_USERNAME)
-        , SMTP_PASSWORD = COALESCE(#{smtpPassword, jdbcType=VARCHAR}, SMTP_PASSWORD)
-        , DAILY_LIMIT   = COALESCE(#{dailyLimit,   jdbcType=INTEGER}, DAILY_LIMIT)
+        , SMTP_HOST     = COALESCE(#{smtp_host,     jdbcType=VARCHAR}, SMTP_HOST)
+        , SMTP_PORT     = COALESCE(#{smtp_port,     jdbcType=INTEGER}, SMTP_PORT)
+        , SMTP_SECURE   = COALESCE(#{smtp_secure,   jdbcType=BOOLEAN}, SMTP_SECURE)
+        , SMTP_USERNAME = COALESCE(#{smtp_username, jdbcType=VARCHAR}, SMTP_USERNAME)
+        , SMTP_PASSWORD = COALESCE(#{smtp_password, jdbcType=VARCHAR}, SMTP_PASSWORD)
+        , DAILY_LIMIT   = COALESCE(#{daily_limit,   jdbcType=INTEGER}, DAILY_LIMIT)
         , STATUS        = COALESCE(#{status,       jdbcType=VARCHAR}, STATUS)
         , UPDATED_DATE  = NOW()
     WHERE ID = #{id}
diff --git a/backend-spring/src/main/resources/mapper/mailReceiveBasic.xml b/backend-spring/src/main/resources/mapper/mailReceiveBasic.xml
index 57d6cade..9f2032c6 100644
--- a/backend-spring/src/main/resources/mapper/mailReceiveBasic.xml
+++ b/backend-spring/src/main/resources/mapper/mailReceiveBasic.xml
@@ -8,14 +8,14 @@
       AND (SUBJECT ILIKE '%' || #{keyword} || '%'
            OR FROM_ADDRESS ILIKE '%' || #{keyword} || '%')
     </if>
-    <if test="isRead != null and isRead != ''">
-      AND IS_READ = #{isRead}
+    <if test="is_read != null and is_read != ''">
+      AND IS_READ = #{is_read}
     </if>
-    <if test="startDate != null and startDate != ''">
-      AND RECEIVED_DATE &gt;= #{startDate}::TIMESTAMP
+    <if test="start_date != null and start_date != ''">
+      AND RECEIVED_DATE &gt;= #{start_date}::TIMESTAMP
     </if>
-    <if test="endDate != null and endDate != ''">
-      AND RECEIVED_DATE &lt;= #{endDate}::TIMESTAMP
+    <if test="end_date != null and end_date != ''">
+      AND RECEIVED_DATE &lt;= #{end_date}::TIMESTAMP
     </if>
   </sql>
 
@@ -34,7 +34,7 @@
         , HAS_ATTACHMENT
         , CREATED_DATE
     FROM MAIL_RECEIVE_BASIC
-    WHERE ACCOUNT_ID = #{accountId}
+    WHERE ACCOUNT_ID = #{account_id}
       AND DELETED_DATE IS NULL
     <include refid="common.companyCodeFilter"/>
     <include refid="mailReceiveBasicSearchCondition"/>
@@ -45,7 +45,7 @@
   <select id="getMailReceiveBasicListCnt" parameterType="map" resultType="int">
     SELECT COUNT(*)
     FROM MAIL_RECEIVE_BASIC
-    WHERE ACCOUNT_ID = #{accountId}
+    WHERE ACCOUNT_ID = #{account_id}
       AND DELETED_DATE IS NULL
     <include refid="common.companyCodeFilter"/>
     <include refid="mailReceiveBasicSearchCondition"/>
@@ -77,7 +77,7 @@
         , BODY_HTML
         , CREATED_DATE
     FROM MAIL_RECEIVE_BASIC
-    WHERE ACCOUNT_ID = #{accountId}
+    WHERE ACCOUNT_ID = #{account_id}
       AND SEQNO = #{seqno}
       AND DELETED_DATE IS NULL
     <include refid="common.companyCodeFilter"/>
@@ -88,7 +88,7 @@
     SET
         IS_READ = TRUE
         , UPDATED_DATE = NOW()
-    WHERE ACCOUNT_ID = #{accountId}
+    WHERE ACCOUNT_ID = #{account_id}
       AND SEQNO = #{seqno}
       AND DELETED_DATE IS NULL
     <include refid="common.companyCodeFilter"/>
@@ -99,7 +99,7 @@
     SET
         DELETED_DATE = NOW()
         , UPDATED_DATE = NOW()
-    WHERE ACCOUNT_ID = #{accountId}
+    WHERE ACCOUNT_ID = #{account_id}
       AND SEQNO = #{seqno}
     <include refid="common.companyCodeFilter"/>
   </update>
@@ -115,12 +115,12 @@
         , A.ATTACH_INDEX
     FROM MAIL_RECEIVE_ATTACHMENT A
     INNER JOIN MAIL_RECEIVE_BASIC M ON A.MAIL_ID = M.ID
-    WHERE M.ACCOUNT_ID = #{accountId}
+    WHERE M.ACCOUNT_ID = #{account_id}
       AND M.SEQNO = #{seqno}
-      AND A.ATTACH_INDEX = #{attachIndex}
+      AND A.ATTACH_INDEX = #{attach_index}
       AND M.DELETED_DATE IS NULL
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (M.COMPANY_CODE = #{companyCode} OR M.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (M.COMPANY_CODE = #{company_code} OR M.COMPANY_CODE = '*')
     </if>
   </select>
 
@@ -135,7 +135,7 @@
         , IMAP_USERNAME
         , IMAP_PASSWORD
     FROM MAIL_ACCOUNTS
-    WHERE ID = #{accountId}
+    WHERE ID = #{account_id}
     <include refid="common.companyCodeFilter"/>
   </select>
 
diff --git a/backend-spring/src/main/resources/mapper/mailSendSimple.xml b/backend-spring/src/main/resources/mapper/mailSendSimple.xml
index 0ee8f815..29a5bd4e 100644
--- a/backend-spring/src/main/resources/mapper/mailSendSimple.xml
+++ b/backend-spring/src/main/resources/mapper/mailSendSimple.xml
@@ -10,7 +10,7 @@
   <select id="getMailAccount" parameterType="map" resultType="map">
     SELECT *
     FROM MAIL_ACCOUNT_FILE
-    WHERE ID = #{accountId}
+    WHERE ID = #{account_id}
     <include refid="common.companyCodeFilter"/>
   </select>
 
diff --git a/backend-spring/src/main/resources/mapper/mailSentHistory.xml b/backend-spring/src/main/resources/mapper/mailSentHistory.xml
index def999bc..e23ba5a9 100644
--- a/backend-spring/src/main/resources/mapper/mailSentHistory.xml
+++ b/backend-spring/src/main/resources/mapper/mailSentHistory.xml
@@ -11,10 +11,10 @@
   <sql id="mailSentHistorySearchCondition">
     <!-- 삭제 상태 필터 -->
     <choose>
-      <when test="onlyDeleted != null and onlyDeleted == true">
+      <when test="only_deleted != null and only_deleted == true">
         AND DELETED_DATE IS NOT NULL
       </when>
-      <when test="includeDeleted == null or includeDeleted == false">
+      <when test="include_deleted == null or include_deleted == false">
         AND DELETED_DATE IS NULL
       </when>
       <!-- includeDeleted == true → 필터 없음 -->
@@ -26,23 +26,23 @@
     </if>
 
     <!-- 계정 필터 -->
-    <if test="accountId != null and accountId != ''">
-      AND ACCOUNT_ID = #{accountId}
+    <if test="account_id != null and account_id != ''">
+      AND ACCOUNT_ID = #{account_id}
     </if>
 
     <!-- 날짜 범위 -->
-    <if test="startDate != null and startDate != ''">
-      AND SENT_AT &gt;= #{startDate}::TIMESTAMP
+    <if test="start_date != null and start_date != ''">
+      AND SENT_AT &gt;= #{start_date}::TIMESTAMP
     </if>
-    <if test="endDate != null and endDate != ''">
-      AND SENT_AT &lt;= #{endDate}::TIMESTAMP
+    <if test="end_date != null and end_date != ''">
+      AND SENT_AT &lt;= #{end_date}::TIMESTAMP
     </if>
 
     <!-- 검색어 (제목, 받는사람, 참조) -->
-    <if test="searchTerm != null and searchTerm != ''">
-      AND (SUBJECT ILIKE '%' || #{searchTerm} || '%'
-           OR TO_EMAILS  ILIKE '%' || #{searchTerm} || '%'
-           OR CC_EMAILS  ILIKE '%' || #{searchTerm} || '%')
+    <if test="search_term != null and search_term != ''">
+      AND (SUBJECT ILIKE '%' || #{search_term} || '%'
+           OR TO_EMAILS  ILIKE '%' || #{search_term} || '%'
+           OR CC_EMAILS  ILIKE '%' || #{search_term} || '%')
     </if>
   </sql>
 
@@ -150,25 +150,25 @@
         , UPDATED_DATE
     ) VALUES (
         #{id}
-        , #{companyCode}
-        , #{accountId}
-        , #{accountName}
-        , #{accountEmail}
-        , #{toEmails}
-        , #{ccEmails}
-        , #{bccEmails}
+        , #{company_code}
+        , #{account_id}
+        , #{account_name}
+        , #{account_email}
+        , #{to_emails}
+        , #{cc_emails}
+        , #{bcc_emails}
         , #{subject}
-        , #{htmlContent}
-        , #{templateId}
-        , #{templateName}
+        , #{html_content}
+        , #{template_id}
+        , #{template_name}
         , #{attachments}
         , #{status}
-        , #{messageId}
-        , #{errorMessage}
+        , #{message_id}
+        , #{error_message}
         , #{accepted}
         , #{rejected}
-        , #{isDraft}
-        , #{sentAt}
+        , #{is_draft}
+        , #{sent_at}
         , NOW()
         , NOW()
     )
@@ -181,19 +181,19 @@
     UPDATE MAIL_SENT_HISTORY
     <set>
       <if test="subject != null">SUBJECT = #{subject},</if>
-      <if test="htmlContent != null">HTML_CONTENT = #{htmlContent},</if>
-      <if test="toEmails != null">TO_EMAILS = #{toEmails},</if>
-      <if test="ccEmails != null">CC_EMAILS = #{ccEmails},</if>
-      <if test="bccEmails != null">BCC_EMAILS = #{bccEmails},</if>
+      <if test="html_content != null">HTML_CONTENT = #{html_content},</if>
+      <if test="to_emails != null">TO_EMAILS = #{to_emails},</if>
+      <if test="cc_emails != null">CC_EMAILS = #{cc_emails},</if>
+      <if test="bcc_emails != null">BCC_EMAILS = #{bcc_emails},</if>
       <if test="attachments != null">ATTACHMENTS = #{attachments},</if>
       <if test="status != null">STATUS = #{status},</if>
-      <if test="isDraft != null">IS_DRAFT = #{isDraft},</if>
-      <if test="accountId != null">ACCOUNT_ID = #{accountId},</if>
-      <if test="accountName != null">ACCOUNT_NAME = #{accountName},</if>
-      <if test="accountEmail != null">ACCOUNT_EMAIL = #{accountEmail},</if>
-      <if test="templateId != null">TEMPLATE_ID = #{templateId},</if>
-      <if test="templateName != null">TEMPLATE_NAME = #{templateName},</if>
-      <if test="errorMessage != null">ERROR_MESSAGE = #{errorMessage},</if>
+      <if test="is_draft != null">IS_DRAFT = #{is_draft},</if>
+      <if test="account_id != null">ACCOUNT_ID = #{account_id},</if>
+      <if test="account_name != null">ACCOUNT_NAME = #{account_name},</if>
+      <if test="account_email != null">ACCOUNT_EMAIL = #{account_email},</if>
+      <if test="template_id != null">TEMPLATE_ID = #{template_id},</if>
+      <if test="template_name != null">TEMPLATE_NAME = #{template_name},</if>
+      <if test="error_message != null">ERROR_MESSAGE = #{error_message},</if>
       UPDATED_DATE = NOW()
     </set>
     WHERE ID = #{id}
@@ -289,8 +289,8 @@
     FROM MAIL_SENT_HISTORY
     WHERE DELETED_DATE IS NULL
     <include refid="common.companyCodeFilter"/>
-    <if test="accountId != null and accountId != ''">
-      AND ACCOUNT_ID = #{accountId}
+    <if test="account_id != null and account_id != ''">
+      AND ACCOUNT_ID = #{account_id}
     </if>
   </select>
 
diff --git a/backend-spring/src/main/resources/mapper/mailTemplateFile.xml b/backend-spring/src/main/resources/mapper/mailTemplateFile.xml
index e3e26d0c..2c0d1969 100644
--- a/backend-spring/src/main/resources/mapper/mailTemplateFile.xml
+++ b/backend-spring/src/main/resources/mapper/mailTemplateFile.xml
@@ -66,12 +66,12 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{companyCode}
+        #{company_code}
         , #{name}
         , #{subject}
         , CAST(#{components} AS JSONB)
-        , CAST(#{queryConfig} AS JSONB)
-        , CAST(#{recipientConfig} AS JSONB)
+        , CAST(#{query_config} AS JSONB)
+        , CAST(#{recipient_config} AS JSONB)
         , #{category}
         , NOW()
         , NOW()
@@ -84,8 +84,8 @@
       <if test="name != null">NAME = #{name},</if>
       <if test="subject != null">SUBJECT = #{subject},</if>
       <if test="components != null">COMPONENTS = CAST(#{components} AS JSONB),</if>
-      <if test="queryConfig != null">QUERY_CONFIG = CAST(#{queryConfig} AS JSONB),</if>
-      <if test="recipientConfig != null">RECIPIENT_CONFIG = CAST(#{recipientConfig} AS JSONB),</if>
+      <if test="query_config != null">QUERY_CONFIG = CAST(#{query_config} AS JSONB),</if>
+      <if test="recipient_config != null">RECIPIENT_CONFIG = CAST(#{recipient_config} AS JSONB),</if>
       <if test="category != null">CATEGORY = #{category},</if>
       UPDATED_DATE = NOW()
     </set>
diff --git a/backend-spring/src/main/resources/mapper/mold.xml b/backend-spring/src/main/resources/mapper/mold.xml
index b6686fbd..68bd452e 100644
--- a/backend-spring/src/main/resources/mapper/mold.xml
+++ b/backend-spring/src/main/resources/mapper/mold.xml
@@ -53,7 +53,7 @@
 
     FROM mold_mng
 
-    WHERE mold_code = #{moldCode}
+    WHERE mold_code = #{mold_code}
     <include refid="common.companyCodeFilter"/>
 
     LIMIT 1
@@ -67,34 +67,34 @@
       cavity_count, shot_count, mold_quantity, base_input_qty,
       operation_status, remarks, image_path, memo, writer
     ) VALUES (
-      #{companyCode}, #{moldCode}, #{moldName}, #{moldType}, #{category},
-      #{manufacturer}, #{manufacturingNumber}, #{manufacturingDate},
-      #{cavityCount, jdbcType=INTEGER}, #{shotCount, jdbcType=INTEGER},
-      #{moldQuantity, jdbcType=INTEGER}, #{baseInputQty, jdbcType=INTEGER},
-      #{operationStatus}, #{remarks}, #{imagePath}, #{memo}, #{writer}
+      #{company_code}, #{mold_code}, #{mold_name}, #{mold_type}, #{category},
+      #{manufacturer}, #{manufacturing_number}, #{manufacturing_date},
+      #{cavity_count, jdbcType=INTEGER}, #{shot_count, jdbcType=INTEGER},
+      #{mold_quantity, jdbcType=INTEGER}, #{base_input_qty, jdbcType=INTEGER},
+      #{operation_status}, #{remarks}, #{image_path}, #{memo}, #{writer}
     )
   </insert>
 
   <!-- ── 금형 수정 ─────────────────────────────────────────────────────────── -->
   <update id="updateMold" parameterType="map">
     UPDATE mold_mng SET
-      mold_name = COALESCE(#{moldName}, mold_name),
-      mold_type = #{moldType},
+      mold_name = COALESCE(#{mold_name}, mold_name),
+      mold_type = #{mold_type},
       category = #{category},
       manufacturer = #{manufacturer},
-      manufacturing_number = #{manufacturingNumber},
-      manufacturing_date = #{manufacturingDate},
-      cavity_count = COALESCE(#{cavityCount, jdbcType=INTEGER}, cavity_count),
-      shot_count = COALESCE(#{shotCount, jdbcType=INTEGER}, shot_count),
-      mold_quantity = COALESCE(#{moldQuantity, jdbcType=INTEGER}, mold_quantity),
-      base_input_qty = COALESCE(#{baseInputQty, jdbcType=INTEGER}, base_input_qty),
-      operation_status = COALESCE(#{operationStatus}, operation_status),
+      manufacturing_number = #{manufacturing_number},
+      manufacturing_date = #{manufacturing_date},
+      cavity_count = COALESCE(#{cavity_count, jdbcType=INTEGER}, cavity_count),
+      shot_count = COALESCE(#{shot_count, jdbcType=INTEGER}, shot_count),
+      mold_quantity = COALESCE(#{mold_quantity, jdbcType=INTEGER}, mold_quantity),
+      base_input_qty = COALESCE(#{base_input_qty, jdbcType=INTEGER}, base_input_qty),
+      operation_status = COALESCE(#{operation_status}, operation_status),
       remarks = #{remarks},
-      image_path = #{imagePath},
+      image_path = #{image_path},
       memo = #{memo},
       updated_date = NOW()
 
-    WHERE mold_code = #{moldCode}
+    WHERE mold_code = #{mold_code}
     <include refid="common.companyCodeFilter"/>
   </update>
 
@@ -102,28 +102,28 @@
   <delete id="deleteMold" parameterType="map">
     DELETE FROM mold_mng
 
-    WHERE mold_code = #{moldCode}
+    WHERE mold_code = #{mold_code}
     <include refid="common.companyCodeFilter"/>
   </delete>
 
   <delete id="deleteMoldSerialByMoldCode" parameterType="map">
     DELETE FROM mold_serial
 
-    WHERE mold_code = #{moldCode}
+    WHERE mold_code = #{mold_code}
     <include refid="common.companyCodeFilter"/>
   </delete>
 
   <delete id="deleteMoldInspectionByMoldCode" parameterType="map">
     DELETE FROM mold_inspection_item
 
-    WHERE mold_code = #{moldCode}
+    WHERE mold_code = #{mold_code}
     <include refid="common.companyCodeFilter"/>
   </delete>
 
   <delete id="deleteMoldPartByMoldCode" parameterType="map">
     DELETE FROM mold_part
 
-    WHERE mold_code = #{moldCode}
+    WHERE mold_code = #{mold_code}
     <include refid="common.companyCodeFilter"/>
   </delete>
 
@@ -133,7 +133,7 @@
 
     FROM mold_serial
 
-    WHERE mold_code = #{moldCode}
+    WHERE mold_code = #{mold_code}
     <include refid="common.companyCodeFilter"/>
 
     ORDER BY serial_number
@@ -144,9 +144,9 @@
       company_code, mold_code, serial_number, status, progress,
       work_description, manager, completion_date, remarks, writer
     ) VALUES (
-      #{companyCode}, #{moldCode}, #{serialNumber}, #{status},
-      #{progress, jdbcType=INTEGER}, #{workDescription}, #{manager},
-      #{completionDate}, #{remarks}, #{writer}
+      #{company_code}, #{mold_code}, #{serial_number}, #{status},
+      #{progress, jdbcType=INTEGER}, #{work_description}, #{manager},
+      #{completion_date}, #{remarks}, #{writer}
     )
   </insert>
 
@@ -167,7 +167,7 @@
 
     FROM mold_serial
 
-    WHERE mold_code = #{moldCode}
+    WHERE mold_code = #{mold_code}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -177,7 +177,7 @@
 
     FROM mold_inspection_item
 
-    WHERE mold_code = #{moldCode}
+    WHERE mold_code = #{mold_code}
     <include refid="common.companyCodeFilter"/>
 
     ORDER BY created_date
@@ -189,9 +189,9 @@
       inspection_method, inspection_content, lower_limit, upper_limit,
       unit, is_active, checklist, remarks, writer
     ) VALUES (
-      #{companyCode}, #{moldCode}, #{inspectionItem}, #{inspectionCycle},
-      #{inspectionMethod}, #{inspectionContent}, #{lowerLimit}, #{upperLimit},
-      #{unit}, #{isActive}, #{checklist}, #{remarks}, #{writer}
+      #{company_code}, #{mold_code}, #{inspection_item}, #{inspection_cycle},
+      #{inspection_method}, #{inspection_content}, #{lower_limit}, #{upper_limit},
+      #{unit}, #{is_active}, #{checklist}, #{remarks}, #{writer}
     )
   </insert>
 
@@ -208,7 +208,7 @@
 
     FROM mold_part
 
-    WHERE mold_code = #{moldCode}
+    WHERE mold_code = #{mold_code}
     <include refid="common.companyCodeFilter"/>
 
     ORDER BY created_date
@@ -220,9 +220,9 @@
       unit, specification, manufacturer, manufacturer_code,
       image_path, remarks, writer
     ) VALUES (
-      #{companyCode}, #{moldCode}, #{partName}, #{replacementCycle},
-      #{unit}, #{specification}, #{manufacturer}, #{manufacturerCode},
-      #{imagePath}, #{remarks}, #{writer}
+      #{company_code}, #{mold_code}, #{part_name}, #{replacement_cycle},
+      #{unit}, #{specification}, #{manufacturer}, #{manufacturer_code},
+      #{image_path}, #{remarks}, #{writer}
     )
   </insert>
 
diff --git a/backend-spring/src/main/resources/mapper/multiConnection.xml b/backend-spring/src/main/resources/mapper/multiConnection.xml
index a336a742..51b621d8 100644
--- a/backend-spring/src/main/resources/mapper/multiConnection.xml
+++ b/backend-spring/src/main/resources/mapper/multiConnection.xml
@@ -36,7 +36,7 @@
 
   <insert id="insertMultiConnection" parameterType="map" useGeneratedKeys="true" keyProperty="id">
     INSERT INTO MULTI_CONNECTION (COMPANY_CODE, CREATED_DATE, UPDATED_DATE)
-    VALUES (#{companyCode}, NOW(), NOW())
+    VALUES (#{company_code}, NOW(), NOW())
   </insert>
 
   <update id="updateMultiConnection" parameterType="map">
diff --git a/backend-spring/src/main/resources/mapper/multilang.xml b/backend-spring/src/main/resources/mapper/multilang.xml
index a277db0c..e822d714 100644
--- a/backend-spring/src/main/resources/mapper/multilang.xml
+++ b/backend-spring/src/main/resources/mapper/multilang.xml
@@ -34,7 +34,7 @@
             , UPDATED_DATE
             , UPDATED_BY
         FROM LANGUAGE_MASTER
-        WHERE LANG_CODE = #{langCode}
+        WHERE LANG_CODE = #{lang_code}
     </select>
 
     <insert id="insertMultilangLanguage" parameterType="map" useGeneratedKeys="false">
@@ -47,46 +47,46 @@
             , CREATED_BY
             , UPDATED_BY
         ) VALUES (
-            #{langCode}
-            , #{langName}
-            , #{langNative}
-            , #{isActive}
-            , #{sortOrder}
-            , #{createdBy}
-            , #{updatedBy}
+            #{lang_code}
+            , #{lang_name}
+            , #{lang_native}
+            , #{is_active}
+            , #{sort_order}
+            , #{created_by}
+            , #{updated_by}
         )
     </insert>
 
     <update id="updateMultilangLanguage" parameterType="map">
         UPDATE LANGUAGE_MASTER
         <set>
-            <if test="langName != null">LANG_NAME = #{langName},</if>
-            <if test="langNative != null">LANG_NATIVE = #{langNative},</if>
-            <if test="isActive != null">IS_ACTIVE = #{isActive},</if>
-            <if test="sortOrder != null">SORT_ORDER = #{sortOrder},</if>
-            UPDATED_BY = #{updatedBy},
+            <if test="lang_name != null">LANG_NAME = #{lang_name},</if>
+            <if test="lang_native != null">LANG_NATIVE = #{lang_native},</if>
+            <if test="is_active != null">IS_ACTIVE = #{is_active},</if>
+            <if test="sort_order != null">SORT_ORDER = #{sort_order},</if>
+            UPDATED_BY = #{updated_by},
             UPDATED_DATE = NOW()
         </set>
-        WHERE LANG_CODE = #{langCode}
+        WHERE LANG_CODE = #{lang_code}
     </update>
 
     <update id="updateMultilangLanguageStatus" parameterType="map">
         UPDATE LANGUAGE_MASTER
         SET
-            IS_ACTIVE = #{newStatus}
-            , UPDATED_BY = #{updatedBy}
+            IS_ACTIVE = #{new_status}
+            , UPDATED_BY = #{updated_by}
             , UPDATED_DATE = NOW()
-        WHERE LANG_CODE = #{langCode}
+        WHERE LANG_CODE = #{lang_code}
     </update>
 
     <delete id="deleteMultilangTextByLangCode" parameterType="map">
         DELETE FROM MULTI_LANG_TEXT
-        WHERE LANG_CODE = #{langCode}
+        WHERE LANG_CODE = #{lang_code}
     </delete>
 
     <delete id="deleteMultilangLanguage" parameterType="map">
         DELETE FROM LANGUAGE_MASTER
-        WHERE LANG_CODE = #{langCode}
+        WHERE LANG_CODE = #{lang_code}
     </delete>
 
     <!-- ═══════════════════════════════════════════════════════════════════════
@@ -108,18 +108,18 @@
             , UPDATED_BY
         FROM MULTI_LANG_KEY_MASTER
         WHERE 1=1
-        <if test="filterCompanyCode != null and filterCompanyCode != ''">
-            AND (COMPANY_CODE = #{filterCompanyCode} OR COMPANY_CODE = '*')
+        <if test="filter_company_code != null and filter_company_code != ''">
+            AND (COMPANY_CODE = #{filter_company_code} OR COMPANY_CODE = '*')
         </if>
-        <if test="menuCode != null and menuCode != ''">
-            AND USAGE_NOTE = #{menuCode}
+        <if test="menu_code != null and menu_code != ''">
+            AND USAGE_NOTE = #{menu_code}
         </if>
-        <if test="categoryId != null">
+        <if test="category_id != null">
             AND CATEGORY_ID IN (
                 WITH RECURSIVE CATEGORY_TREE AS (
                     SELECT CATEGORY_ID
                     FROM MULTI_LANG_CATEGORY
-                    WHERE CATEGORY_ID = #{categoryId}
+                    WHERE CATEGORY_ID = #{category_id}
                     UNION ALL
                     SELECT C.CATEGORY_ID
                     FROM MULTI_LANG_CATEGORY C
@@ -128,10 +128,10 @@
                 SELECT CATEGORY_ID FROM CATEGORY_TREE
             )
         </if>
-        <if test="searchText != null and searchText != ''">
-            AND (LANG_KEY ILIKE '%' || #{searchText} || '%'
-              OR DESCRIPTION ILIKE '%' || #{searchText} || '%'
-              OR USAGE_NOTE ILIKE '%' || #{searchText} || '%')
+        <if test="search_text != null and search_text != ''">
+            AND (LANG_KEY ILIKE '%' || #{search_text} || '%'
+              OR DESCRIPTION ILIKE '%' || #{search_text} || '%'
+              OR USAGE_NOTE ILIKE '%' || #{search_text} || '%')
         </if>
         ORDER BY COMPANY_CODE ASC, USAGE_NOTE ASC, LANG_KEY ASC
     </select>
@@ -152,22 +152,22 @@
             , UPDATED_DATE
             , UPDATED_BY
         FROM MULTI_LANG_KEY_MASTER
-        WHERE KEY_ID = #{keyId}
+        WHERE KEY_ID = #{key_id}
     </select>
 
     <select id="getMultilangKeyByCompanyAndKey" parameterType="map" resultType="map">
         SELECT KEY_ID
         FROM MULTI_LANG_KEY_MASTER
-        WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-          AND LANG_KEY = #{langKey}
+        WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+          AND LANG_KEY = #{lang_key}
     </select>
 
     <select id="getMultilangKeyByCompanyAndKeyExclude" parameterType="map" resultType="map">
         SELECT KEY_ID
         FROM MULTI_LANG_KEY_MASTER
-        WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-          AND LANG_KEY = #{langKey}
-          AND KEY_ID != #{keyId}
+        WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+          AND LANG_KEY = #{lang_key}
+          AND KEY_ID != #{key_id}
     </select>
 
     <insert id="insertMultilangKey" parameterType="map" useGeneratedKeys="true" keyProperty="keyId" keyColumn="key_id">
@@ -180,13 +180,13 @@
             , CREATED_BY
             , UPDATED_BY
         ) VALUES (
-            #{companyCode}
-            , #{menuName}
-            , #{langKey}
+            #{company_code}
+            , #{menu_name}
+            , #{lang_key}
             , #{description}
-            , #{isActive}
-            , #{createdBy}
-            , #{updatedBy}
+            , #{is_active}
+            , #{created_by}
+            , #{updated_by}
         )
     </insert>
 
@@ -202,46 +202,46 @@
             , CREATED_BY
             , UPDATED_BY
         ) VALUES (
-            #{companyCode}
-            , #{langKey}
-            , #{categoryId}
-            , #{keyMeaning}
-            , #{usageNote}
+            #{company_code}
+            , #{lang_key}
+            , #{category_id}
+            , #{key_meaning}
+            , #{usage_note}
             , #{description}
             , 'Y'
-            , #{createdBy}
-            , #{createdBy}
+            , #{created_by}
+            , #{created_by}
         )
     </insert>
 
     <update id="updateMultilangKey" parameterType="map">
         UPDATE MULTI_LANG_KEY_MASTER
         <set>
-            <if test="companyCode != null">COMPANY_CODE = #{companyCode},</if>
-            <if test="menuName != null">USAGE_NOTE = #{menuName},</if>
-            <if test="langKey != null">LANG_KEY = #{langKey},</if>
+            <if test="company_code != null">COMPANY_CODE = #{company_code},</if>
+            <if test="menu_name != null">USAGE_NOTE = #{menu_name},</if>
+            <if test="lang_key != null">LANG_KEY = #{lang_key},</if>
             <if test="description != null">DESCRIPTION = #{description},</if>
-            UPDATED_BY = #{updatedBy}
+            UPDATED_BY = #{updated_by}
         </set>
-        WHERE KEY_ID = #{keyId}
+        WHERE KEY_ID = #{key_id}
     </update>
 
     <update id="updateMultilangKeyStatus" parameterType="map">
         UPDATE MULTI_LANG_KEY_MASTER
         SET
-            IS_ACTIVE = #{newStatus}
-            , UPDATED_BY = #{updatedBy}
-        WHERE KEY_ID = #{keyId}
+            IS_ACTIVE = #{new_status}
+            , UPDATED_BY = #{updated_by}
+        WHERE KEY_ID = #{key_id}
     </update>
 
     <delete id="deleteMultilangTextByKeyId" parameterType="map">
         DELETE FROM MULTI_LANG_TEXT
-        WHERE KEY_ID = #{keyId}
+        WHERE KEY_ID = #{key_id}
     </delete>
 
     <delete id="deleteMultilangKey" parameterType="map">
         DELETE FROM MULTI_LANG_KEY_MASTER
-        WHERE KEY_ID = #{keyId}
+        WHERE KEY_ID = #{key_id}
     </delete>
 
     <!-- ═══════════════════════════════════════════════════════════════════════
@@ -260,7 +260,7 @@
             , UPDATED_DATE
             , UPDATED_BY
         FROM MULTI_LANG_TEXT
-        WHERE KEY_ID = #{keyId}
+        WHERE KEY_ID = #{key_id}
           AND IS_ACTIVE = 'Y'
         ORDER BY LANG_CODE ASC
     </select>
@@ -274,12 +274,12 @@
             , CREATED_BY
             , UPDATED_BY
         ) VALUES (
-            #{keyId}
-            , #{langCode}
-            , #{langText}
-            , #{isActive}
-            , #{createdBy}
-            , #{updatedBy}
+            #{key_id}
+            , #{lang_code}
+            , #{lang_text}
+            , #{is_active}
+            , #{created_by}
+            , #{updated_by}
         )
     </insert>
 
@@ -292,15 +292,15 @@
             , CREATED_DATE
             , CREATED_BY
         ) VALUES (
-            #{keyId}
-            , #{langCode}
-            , #{langText}
+            #{key_id}
+            , #{lang_code}
+            , #{lang_text}
             , 'Y'
             , NOW()
             , 'system'
         )
         ON CONFLICT (KEY_ID, LANG_CODE)
-        DO UPDATE SET LANG_TEXT = #{langText}, UPDATED_DATE = NOW()
+        DO UPDATE SET LANG_TEXT = #{lang_text}, UPDATED_DATE = NOW()
     </insert>
 
     <!-- ═══════════════════════════════════════════════════════════════════════
@@ -311,11 +311,11 @@
         SELECT MLT.LANG_TEXT
         FROM MULTI_LANG_TEXT MLT
         INNER JOIN MULTI_LANG_KEY_MASTER MLKM ON MLT.KEY_ID = MLKM.KEY_ID
-        WHERE MLT.LANG_CODE = #{userLang}
+        WHERE MLT.LANG_CODE = #{user_lang}
           AND MLT.IS_ACTIVE = 'Y'
-          AND (MLKM.COMPANY_CODE = #{companyCode} OR MLKM.COMPANY_CODE = '*')
-          AND MLKM.USAGE_NOTE = #{menuCode}
-          AND MLKM.LANG_KEY = #{langKey}
+          AND (MLKM.COMPANY_CODE = #{company_code} OR MLKM.COMPANY_CODE = '*')
+          AND MLKM.USAGE_NOTE = #{menu_code}
+          AND MLKM.LANG_KEY = #{lang_key}
           AND MLKM.IS_ACTIVE = 'Y'
     </select>
 
@@ -323,10 +323,10 @@
         SELECT MLT.LANG_TEXT
         FROM MULTI_LANG_TEXT MLT
         INNER JOIN MULTI_LANG_KEY_MASTER MLKM ON MLT.KEY_ID = MLKM.KEY_ID
-        WHERE MLT.LANG_CODE = #{langCode}
+        WHERE MLT.LANG_CODE = #{lang_code}
           AND MLT.IS_ACTIVE = 'Y'
-          AND (MLKM.COMPANY_CODE = #{companyCode} OR MLKM.COMPANY_CODE = '*')
-          AND MLKM.LANG_KEY = #{langKey}
+          AND (MLKM.COMPANY_CODE = #{company_code} OR MLKM.COMPANY_CODE = '*')
+          AND MLKM.LANG_KEY = #{lang_key}
           AND MLKM.IS_ACTIVE = 'Y'
     </select>
 
@@ -335,16 +335,16 @@
             MLT.LANG_TEXT
             , MLKM.LANG_KEY
             , MLKM.COMPANY_CODE
-            , CASE WHEN MLKM.COMPANY_CODE = #{companyCode} THEN 1 ELSE 2 END AS PRIORITY
+            , CASE WHEN MLKM.COMPANY_CODE = #{company_code} THEN 1 ELSE 2 END AS PRIORITY
         FROM MULTI_LANG_TEXT MLT
         INNER JOIN MULTI_LANG_KEY_MASTER MLKM ON MLT.KEY_ID = MLKM.KEY_ID
-        WHERE MLT.LANG_CODE = #{userLang}
+        WHERE MLT.LANG_CODE = #{user_lang}
           AND MLT.IS_ACTIVE = 'Y'
           AND MLKM.LANG_KEY IN
               <foreach collection="langKeys" item="key" open="(" separator="," close=")">
                   #{key}
               </foreach>
-          AND MLKM.COMPANY_CODE IN (#{companyCode}, '*')
+          AND MLKM.COMPANY_CODE IN (#{company_code}, '*')
           AND MLKM.IS_ACTIVE = 'Y'
         ORDER BY MLKM.LANG_KEY ASC, PRIORITY ASC
     </select>
@@ -354,7 +354,7 @@
             MLT.LANG_TEXT
             , MLKM.LANG_KEY
             , MLKM.COMPANY_CODE
-            , CASE WHEN MLKM.COMPANY_CODE = #{companyCode} THEN 1 ELSE 2 END AS PRIORITY
+            , CASE WHEN MLKM.COMPANY_CODE = #{company_code} THEN 1 ELSE 2 END AS PRIORITY
         FROM MULTI_LANG_TEXT MLT
         INNER JOIN MULTI_LANG_KEY_MASTER MLKM ON MLT.KEY_ID = MLKM.KEY_ID
         WHERE MLT.LANG_CODE = 'KR'
@@ -363,7 +363,7 @@
               <foreach collection="missingKeys" item="key" open="(" separator="," close=")">
                   #{key}
               </foreach>
-          AND MLKM.COMPANY_CODE IN (#{companyCode}, '*')
+          AND MLKM.COMPANY_CODE IN (#{company_code}, '*')
           AND MLKM.IS_ACTIVE = 'Y'
         ORDER BY MLKM.LANG_KEY ASC, PRIORITY ASC
     </select>
@@ -400,7 +400,7 @@
             , SORT_ORDER
             , IS_ACTIVE
         FROM MULTI_LANG_CATEGORY
-        WHERE CATEGORY_ID = #{categoryId}
+        WHERE CATEGORY_ID = #{category_id}
     </select>
 
     <select id="getMultilangCategoryPath" parameterType="map" resultType="map">
@@ -416,7 +416,7 @@
                 , SORT_ORDER
                 , IS_ACTIVE
             FROM MULTI_LANG_CATEGORY
-            WHERE CATEGORY_ID = #{categoryId}
+            WHERE CATEGORY_ID = #{category_id}
             UNION ALL
             SELECT
                 C.CATEGORY_ID
@@ -439,15 +439,15 @@
     <select id="getMultilangCategoryByCodeAndParent" parameterType="map" resultType="map">
         SELECT CATEGORY_ID
         FROM MULTI_LANG_CATEGORY
-        WHERE CATEGORY_CODE = #{categoryCode}
-          AND PARENT_ID = #{parentId}
+        WHERE CATEGORY_CODE = #{category_code}
+          AND PARENT_ID = #{parent_id}
     </select>
 
     <select id="getMultilangCategoryByNameAndParent" parameterType="map" resultType="map">
         SELECT CATEGORY_ID
         FROM MULTI_LANG_CATEGORY
-        WHERE CATEGORY_NAME = #{categoryName}
-          AND PARENT_ID = #{parentId}
+        WHERE CATEGORY_NAME = #{category_name}
+          AND PARENT_ID = #{parent_id}
     </select>
 
     <insert id="insertMultilangCategory" parameterType="map" useGeneratedKeys="true" keyProperty="categoryId" keyColumn="category_id">
@@ -462,13 +462,13 @@
             , IS_ACTIVE
             , CREATED_DATE
         ) VALUES (
-            #{categoryCode}
-            , #{categoryName}
-            , #{parentId, jdbcType=INTEGER}
+            #{category_code}
+            , #{category_name}
+            , #{parent_id, jdbcType=INTEGER}
             , #{level}
-            , #{keyPrefix}
+            , #{key_prefix}
             , #{description}
-            , #{sortOrder}
+            , #{sort_order}
             , 'Y'
             , NOW()
         )
@@ -490,7 +490,7 @@
             , IS_ACTIVE
             , CREATED_DATE
         FROM MULTI_LANG_KEY_MASTER
-        WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+        WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
           AND BASE_KEY_ID IS NOT NULL
         ORDER BY LANG_KEY ASC
     </select>
@@ -503,7 +503,7 @@
             , CATEGORY_ID
             , KEY_MEANING
         FROM MULTI_LANG_KEY_MASTER
-        WHERE KEY_ID = #{keyId}
+        WHERE KEY_ID = #{key_id}
     </select>
 
     <insert id="insertMultilangOverrideKey" parameterType="map" useGeneratedKeys="true" keyProperty="keyId" keyColumn="key_id">
@@ -517,14 +517,14 @@
             , CREATED_BY
             , UPDATED_BY
         ) VALUES (
-            #{companyCode}
-            , #{langKey}
-            , #{categoryId}
-            , #{keyMeaning}
-            , #{baseKeyId}
+            #{company_code}
+            , #{lang_key}
+            , #{category_id}
+            , #{key_meaning}
+            , #{base_key_id}
             , 'Y'
-            , #{createdBy}
-            , #{createdBy}
+            , #{created_by}
+            , #{created_by}
         )
     </insert>
 
@@ -535,14 +535,14 @@
     <select id="getMultilangRootCategoryByCode" parameterType="map" resultType="map">
         SELECT CATEGORY_ID
         FROM MULTI_LANG_CATEGORY
-        WHERE CATEGORY_CODE = #{categoryCode}
+        WHERE CATEGORY_CODE = #{category_code}
           AND PARENT_ID IS NULL
     </select>
 
     <select id="getMultilangScreenGroupId" parameterType="map" resultType="map">
         SELECT GROUP_ID
         FROM SCREEN_GROUP_SCREENS
-        WHERE SCREEN_ID = #{screenId}
+        WHERE SCREEN_ID = #{screen_id}
         LIMIT 1
     </select>
 
@@ -555,7 +555,7 @@
                 , GROUP_LEVEL
                 , 1 AS DEPTH
             FROM SCREEN_GROUPS
-            WHERE ID = #{groupId}
+            WHERE ID = #{group_id}
             UNION ALL
             SELECT
                 G.ID
@@ -577,13 +577,13 @@
     <select id="getMultilangScreenCompanyCode" parameterType="map" resultType="map">
         SELECT COMPANY_CODE
         FROM SCREEN_DEFINITIONS
-        WHERE SCREEN_ID = #{screenId}
+        WHERE SCREEN_ID = #{screen_id}
     </select>
 
     <select id="getMultilangCompanyName" parameterType="map" resultType="map">
         SELECT COMPANY_NAME
         FROM COMPANY_MNG
-        WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+        WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </select>
 
 </mapper>
diff --git a/backend-spring/src/main/resources/mapper/nodeFlow.xml b/backend-spring/src/main/resources/mapper/nodeFlow.xml
index 3982b202..a3cfbc99 100644
--- a/backend-spring/src/main/resources/mapper/nodeFlow.xml
+++ b/backend-spring/src/main/resources/mapper/nodeFlow.xml
@@ -24,8 +24,8 @@
         , UPDATED_DATE AS "updatedAt"
     FROM NODE_FLOWS
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     ORDER BY UPDATED_DATE DESC
   </select>
@@ -42,7 +42,7 @@
         , CREATED_DATE AS "createdAt"
         , UPDATED_DATE AS "updatedAt"
     FROM NODE_FLOWS
-    WHERE FLOW_ID = #{flowId}
+    WHERE FLOW_ID = #{flow_id}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -55,7 +55,7 @@
         , FLOW_NAME AS "flowName"
         , FLOW_DATA AS "flowData"
     FROM NODE_FLOWS
-    WHERE FLOW_ID = #{flowId}
+    WHERE FLOW_ID = #{flow_id}
   </select>
 
   <!-- ────────────────────────────────────────────────────── -->
@@ -67,7 +67,7 @@
         , FLOW_DESCRIPTION AS "flowDescription"
         , COMPANY_CODE AS "companyCode"
     FROM NODE_FLOWS
-    WHERE FLOW_ID = #{flowId}
+    WHERE FLOW_ID = #{flow_id}
   </select>
 
   <!-- ────────────────────────────────────────────────────── -->
@@ -81,10 +81,10 @@
         , FLOW_DATA
         , COMPANY_CODE
     ) VALUES (
-        #{flowName}
-        , #{flowDescription}
-        , #{flowData}::JSONB
-        , #{companyCode}
+        #{flow_name}
+        , #{flow_description}
+        , #{flow_data}::JSONB
+        , #{company_code}
     )
   </insert>
 
@@ -94,11 +94,11 @@
   <update id="updateNodeFlow" parameterType="map">
     UPDATE NODE_FLOWS
     SET
-        FLOW_NAME = #{flowName}
-        , FLOW_DESCRIPTION = #{flowDescription}
-        , FLOW_DATA = #{flowData}::JSONB
+        FLOW_NAME = #{flow_name}
+        , FLOW_DESCRIPTION = #{flow_description}
+        , FLOW_DATA = #{flow_data}::JSONB
         , UPDATED_DATE = NOW()
-    WHERE FLOW_ID = #{flowId}
+    WHERE FLOW_ID = #{flow_id}
   </update>
 
   <!-- ────────────────────────────────────────────────────── -->
@@ -106,7 +106,7 @@
   <!-- ────────────────────────────────────────────────────── -->
   <delete id="deleteNodeFlow" parameterType="map">
     DELETE FROM NODE_FLOWS
-    WHERE FLOW_ID = #{flowId}
+    WHERE FLOW_ID = #{flow_id}
   </delete>
 
 </mapper>
diff --git a/backend-spring/src/main/resources/mapper/numberingRule.xml b/backend-spring/src/main/resources/mapper/numberingRule.xml
index e1555a46..8d961b5c 100644
--- a/backend-spring/src/main/resources/mapper/numberingRule.xml
+++ b/backend-spring/src/main/resources/mapper/numberingRule.xml
@@ -38,8 +38,8 @@
 
     WHERE 1=1
     <choose>
-      <when test="companyCode == &quot;*&quot;"><!-- 최고관리자: 전체 --></when>
-      <otherwise>AND (company_code = #{companyCode} OR company_code = '*')</otherwise>
+      <when test="company_code == &quot;*&quot;"><!-- 최고관리자: 전체 --></when>
+      <otherwise>AND (company_code = #{company_code} OR company_code = '*')</otherwise>
     </choose>
 
     ORDER BY CREATED_DATE DESC
@@ -50,10 +50,10 @@
 
     FROM numbering_rules
 
-    WHERE rule_id = #{ruleId}
+    WHERE rule_id = #{rule_id}
     <choose>
-      <when test="companyCode == &quot;*&quot;"><!-- 최고관리자: 전체 --></when>
-      <otherwise>AND (company_code = #{companyCode} OR company_code = '*')</otherwise>
+      <when test="company_code == &quot;*&quot;"><!-- 최고관리자: 전체 --></when>
+      <otherwise>AND (company_code = #{company_code} OR company_code = '*')</otherwise>
     </choose>
   </select>
 
@@ -63,18 +63,18 @@
       current_sequence, table_name, column_name, company_code,
       category_column, category_value_id, created_by, CREATED_DATE, UPDATED_DATE
     ) VALUES (
-      #{ruleId},
-      #{ruleName},
+      #{rule_id},
+      #{rule_name},
       #{description,       jdbcType=VARCHAR},
       #{separator,         jdbcType=VARCHAR},
-      #{resetPeriod,       jdbcType=VARCHAR},
-      #{currentSequence,   jdbcType=INTEGER},
-      #{tableName,         jdbcType=VARCHAR},
-      #{columnName,        jdbcType=VARCHAR},
-      #{companyCode},
-      #{categoryColumn,    jdbcType=VARCHAR},
-      #{categoryValueId,   jdbcType=INTEGER},
-      #{createdBy,         jdbcType=VARCHAR},
+      #{reset_period,       jdbcType=VARCHAR},
+      #{current_sequence,   jdbcType=INTEGER},
+      #{table_name,         jdbcType=VARCHAR},
+      #{column_name,        jdbcType=VARCHAR},
+      #{company_code},
+      #{category_column,    jdbcType=VARCHAR},
+      #{category_value_id,   jdbcType=INTEGER},
+      #{created_by,         jdbcType=VARCHAR},
       NOW(), NOW()
     )
   </insert>
@@ -82,25 +82,25 @@
   <update id="updateRule" parameterType="map">
     UPDATE numbering_rules
     SET
-      rule_name         = COALESCE(#{ruleName,         jdbcType=VARCHAR}, rule_name),
+      rule_name         = COALESCE(#{rule_name,         jdbcType=VARCHAR}, rule_name),
       description       = COALESCE(#{description,      jdbcType=VARCHAR}, description),
       separator         = COALESCE(#{separator,        jdbcType=VARCHAR}, separator),
-      reset_period      = COALESCE(#{resetPeriod,      jdbcType=VARCHAR}, reset_period),
-      table_name        = COALESCE(#{tableName,        jdbcType=VARCHAR}, table_name),
-      column_name       = COALESCE(#{columnName,       jdbcType=VARCHAR}, column_name),
-      category_column   = COALESCE(#{categoryColumn,   jdbcType=VARCHAR}, category_column),
-      category_value_id = COALESCE(#{categoryValueId,  jdbcType=INTEGER}, category_value_id),
+      reset_period      = COALESCE(#{reset_period,      jdbcType=VARCHAR}, reset_period),
+      table_name        = COALESCE(#{table_name,        jdbcType=VARCHAR}, table_name),
+      column_name       = COALESCE(#{column_name,       jdbcType=VARCHAR}, column_name),
+      category_column   = COALESCE(#{category_column,   jdbcType=VARCHAR}, category_column),
+      category_value_id = COALESCE(#{category_value_id,  jdbcType=INTEGER}, category_value_id),
       UPDATED_DATE = NOW()
 
-    WHERE rule_id = #{ruleId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE rule_id = #{rule_id}
+      AND (company_code = #{company_code} OR company_code = '*')
   </update>
 
   <delete id="deleteRule" parameterType="map">
     DELETE FROM numbering_rules
 
-    WHERE rule_id = #{ruleId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE rule_id = #{rule_id}
+      AND (company_code = #{company_code} OR company_code = '*')
   </delete>
 
   <!-- ===================== numbering_rule_parts ===================== -->
@@ -110,10 +110,10 @@
 
     FROM numbering_rule_parts
 
-    WHERE rule_id = #{ruleId}
+    WHERE rule_id = #{rule_id}
     <choose>
-      <when test="companyCode == &quot;*&quot;"><!-- 최고관리자: 전체 --></when>
-      <otherwise>AND (company_code = #{companyCode} OR company_code = '*')</otherwise>
+      <when test="company_code == &quot;*&quot;"><!-- 최고관리자: 전체 --></when>
+      <otherwise>AND (company_code = #{company_code} OR company_code = '*')</otherwise>
     </choose>
 
     ORDER BY part_order
@@ -124,13 +124,13 @@
       rule_id, part_order, part_type, generation_method,
       auto_config, manual_config, company_code, CREATED_DATE
     ) VALUES (
-      #{ruleId},
+      #{rule_id},
       #{order},
-      #{partType},
-      #{generationMethod},
-      #{autoConfig}::jsonb,
-      #{manualConfig}::jsonb,
-      #{companyCode},
+      #{part_type},
+      #{generation_method},
+      #{auto_config}::jsonb,
+      #{manual_config}::jsonb,
+      #{company_code},
       NOW()
     )
   </insert>
@@ -138,8 +138,8 @@
   <delete id="deleteRulePartsByRuleId" parameterType="map">
     DELETE FROM numbering_rule_parts
 
-    WHERE rule_id = #{ruleId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE rule_id = #{rule_id}
+      AND (company_code = #{company_code} OR company_code = '*')
   </delete>
 
   <!-- ===================== numbering_rule_sequences ===================== -->
@@ -149,25 +149,25 @@
 
     FROM numbering_rule_sequences
 
-    WHERE rule_id    = #{ruleId}
-      AND (company_code = #{companyCode} OR company_code = '*')
-      AND prefix_key   = #{prefixKey}
+    WHERE rule_id    = #{rule_id}
+      AND (company_code = #{company_code} OR company_code = '*')
+      AND prefix_key   = #{prefix_key}
   </select>
 
   <delete id="deleteSequencesByRuleId" parameterType="map">
     DELETE FROM numbering_rule_sequences
 
-    WHERE rule_id    = #{ruleId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE rule_id    = #{rule_id}
+      AND (company_code = #{company_code} OR company_code = '*')
   </delete>
 
   <update id="updateCurrentSequenceInRule" parameterType="map">
     UPDATE numbering_rules
-    SET current_sequence = GREATEST(COALESCE(current_sequence, '0'), #{currentSequence}),
+    SET current_sequence = GREATEST(COALESCE(current_sequence, '0'), #{current_sequence}),
         UPDATED_DATE = NOW()
 
-    WHERE rule_id    = #{ruleId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE rule_id    = #{rule_id}
+      AND (company_code = #{company_code} OR company_code = '*')
   </update>
 
   <!-- ===================== available rules ===================== -->
@@ -179,8 +179,8 @@
 
     WHERE 1=1
     <choose>
-      <when test="companyCode == &quot;*&quot;"><!-- 최고관리자: 전체 --></when>
-      <otherwise>AND (company_code = #{companyCode} OR company_code = '*')</otherwise>
+      <when test="company_code == &quot;*&quot;"><!-- 최고관리자: 전체 --></when>
+      <otherwise>AND (company_code = #{company_code} OR company_code = '*')</otherwise>
     </choose>
 
     ORDER BY CREATED_DATE DESC
@@ -193,11 +193,11 @@
 
     WHERE 1=1
     <choose>
-      <when test="companyCode == &quot;*&quot;"><!-- 최고관리자: 전체 --></when>
-      <otherwise>AND (company_code = #{companyCode} OR company_code = '*')</otherwise>
+      <when test="company_code == &quot;*&quot;"><!-- 최고관리자: 전체 --></when>
+      <otherwise>AND (company_code = #{company_code} OR company_code = '*')</otherwise>
     </choose>
-    <if test="tableName != null and tableName != ''">
-      AND table_name = #{tableName}
+    <if test="table_name != null and table_name != ''">
+      AND table_name = #{table_name}
     </if>
 
     ORDER BY CREATED_DATE DESC
@@ -225,9 +225,9 @@
 
     LEFT JOIN category_values cv ON r.category_value_id = cv.value_id
 
-    WHERE (r.company_code  = #{companyCode} OR r.company_code = '*')
-      AND r.table_name    = #{tableName}
-      AND r.column_name   = #{columnName}
+    WHERE (r.company_code  = #{company_code} OR r.company_code = '*')
+      AND r.table_name    = #{table_name}
+      AND r.column_name   = #{column_name}
       AND r.category_value_id IS NULL
     LIMIT 1
   </select>
@@ -254,8 +254,8 @@
 
     LEFT JOIN category_values cv ON r.category_value_id = cv.value_id
 
-    WHERE (r.company_code  = #{companyCode} OR r.company_code = '*')
-      AND r.table_name    = #{tableName}
+    WHERE (r.company_code  = #{company_code} OR r.company_code = '*')
+      AND r.table_name    = #{table_name}
       AND (r.column_name IS NULL OR r.column_name = '')
       AND r.category_value_id IS NULL
 
@@ -265,10 +265,10 @@
 
   <update id="updateRuleColumnName" parameterType="map">
     UPDATE numbering_rules
-    SET column_name = #{columnName}
+    SET column_name = #{column_name}
 
-    WHERE rule_id    = #{ruleId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE rule_id    = #{rule_id}
+      AND (company_code = #{company_code} OR company_code = '*')
   </update>
 
   <!-- ===================== copy-for-company ===================== -->
@@ -278,7 +278,7 @@
 
     FROM numbering_rules
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
+    WHERE (company_code = #{company_code} OR company_code = '*')
 
     ORDER BY CREATED_DATE
   </select>
@@ -288,8 +288,8 @@
 
     FROM numbering_rule_parts
 
-    WHERE rule_id    = #{ruleId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE rule_id    = #{rule_id}
+      AND (company_code = #{company_code} OR company_code = '*')
 
     ORDER BY part_order
   </select>
diff --git a/backend-spring/src/main/resources/mapper/openApiProxy.xml b/backend-spring/src/main/resources/mapper/openApiProxy.xml
index 59e2259f..3e2ef3d2 100644
--- a/backend-spring/src/main/resources/mapper/openApiProxy.xml
+++ b/backend-spring/src/main/resources/mapper/openApiProxy.xml
@@ -36,7 +36,7 @@
 
   <insert id="insertOpenApiProxy" parameterType="map" useGeneratedKeys="true" keyProperty="id">
     INSERT INTO OPEN_API_PROXY (COMPANY_CODE, CREATED_DATE, UPDATED_DATE)
-    VALUES (#{companyCode}, NOW(), NOW())
+    VALUES (#{company_code}, NOW(), NOW())
   </insert>
 
   <update id="updateOpenApiProxy" parameterType="map">
diff --git a/backend-spring/src/main/resources/mapper/packaging.xml b/backend-spring/src/main/resources/mapper/packaging.xml
index 371eec95..c9b30c19 100644
--- a/backend-spring/src/main/resources/mapper/packaging.xml
+++ b/backend-spring/src/main/resources/mapper/packaging.xml
@@ -11,12 +11,12 @@
     SELECT *
     FROM pkg_unit
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
     ORDER BY
     <choose>
-      <when test="companyCode != null and companyCode == &quot;*&quot;">company_code, created_date DESC</when>
+      <when test="company_code != null and company_code == &quot;*&quot;">company_code, created_date DESC</when>
       <otherwise>created_date DESC</otherwise>
     </choose>
   </select>
@@ -26,7 +26,7 @@
       (company_code, pkg_code, pkg_name, pkg_type, status,
        width_mm, length_mm, height_mm, self_weight_kg, max_load_kg, volume_l, remarks, writer)
     VALUES
-      (#{companyCode}, #{pkg_code}, #{pkg_name}, #{pkg_type},
+      (#{company_code}, #{pkg_code}, #{pkg_name}, #{pkg_type},
        COALESCE(#{status}, 'ACTIVE'),
        #{width_mm}, #{length_mm}, #{height_mm}, #{self_weight_kg}, #{max_load_kg}, #{volume_l},
        #{remarks}, #{writer})
@@ -47,7 +47,7 @@
       updated_date   = NOW(),
       writer         = #{writer}
     WHERE id = #{id}
-      AND (company_code = #{companyCode} OR company_code = '*')
+      AND (company_code = #{company_code} OR company_code = '*')
   </update>
 
   <delete id="deletePkgUnitItemsByUnitId" parameterType="map">
@@ -56,15 +56,15 @@
       SELECT pkg_code
       FROM pkg_unit
       WHERE id = #{id}
-        AND (company_code = #{companyCode} OR company_code = '*')
+        AND (company_code = #{company_code} OR company_code = '*')
     )
-    AND (company_code = #{companyCode} OR company_code = '*')
+    AND (company_code = #{company_code} OR company_code = '*')
   </delete>
 
   <delete id="deletePkgUnit" parameterType="map">
     DELETE FROM pkg_unit
     WHERE id = #{id}
-      AND (company_code = #{companyCode} OR company_code = '*')
+      AND (company_code = #{company_code} OR company_code = '*')
   </delete>
 
   <!-- ──────────────────────────────────────────────────────────
@@ -74,20 +74,20 @@
   <select id="getPkgUnitItems" parameterType="map" resultType="map">
     SELECT *
     FROM pkg_unit_item
-    WHERE pkg_code = #{pkgCode}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE pkg_code = #{pkg_code}
+      AND (company_code = #{company_code} OR company_code = '*')
     ORDER BY created_date DESC
   </select>
 
   <insert id="insertPkgUnitItem" parameterType="map" useGeneratedKeys="true" keyProperty="id">
     INSERT INTO pkg_unit_item (company_code, pkg_code, item_number, pkg_qty, writer)
-    VALUES (#{companyCode}, #{pkg_code}, #{item_number}, #{pkg_qty}, #{writer})
+    VALUES (#{company_code}, #{pkg_code}, #{item_number}, #{pkg_qty}, #{writer})
   </insert>
 
   <delete id="deletePkgUnitItem" parameterType="map">
     DELETE FROM pkg_unit_item
     WHERE id = #{id}
-      AND (company_code = #{companyCode} OR company_code = '*')
+      AND (company_code = #{company_code} OR company_code = '*')
   </delete>
 
   <!-- ──────────────────────────────────────────────────────────
@@ -98,12 +98,12 @@
     SELECT *
     FROM loading_unit
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
     ORDER BY
     <choose>
-      <when test="companyCode != null and companyCode == &quot;*&quot;">company_code, created_date DESC</when>
+      <when test="company_code != null and company_code == &quot;*&quot;">company_code, created_date DESC</when>
       <otherwise>created_date DESC</otherwise>
     </choose>
   </select>
@@ -113,7 +113,7 @@
       (company_code, loading_code, loading_name, loading_type, status,
        width_mm, length_mm, height_mm, self_weight_kg, max_load_kg, max_stack, remarks, writer)
     VALUES
-      (#{companyCode}, #{loading_code}, #{loading_name}, #{loading_type},
+      (#{company_code}, #{loading_code}, #{loading_name}, #{loading_type},
        COALESCE(#{status}, 'ACTIVE'),
        #{width_mm}, #{length_mm}, #{height_mm}, #{self_weight_kg}, #{max_load_kg}, #{max_stack},
        #{remarks}, #{writer})
@@ -134,7 +134,7 @@
       updated_date   = NOW(),
       writer         = #{writer}
     WHERE id = #{id}
-      AND (company_code = #{companyCode} OR company_code = '*')
+      AND (company_code = #{company_code} OR company_code = '*')
   </update>
 
   <delete id="deleteLoadingUnitPkgsByUnitId" parameterType="map">
@@ -143,15 +143,15 @@
       SELECT loading_code
       FROM loading_unit
       WHERE id = #{id}
-        AND (company_code = #{companyCode} OR company_code = '*')
+        AND (company_code = #{company_code} OR company_code = '*')
     )
-    AND (company_code = #{companyCode} OR company_code = '*')
+    AND (company_code = #{company_code} OR company_code = '*')
   </delete>
 
   <delete id="deleteLoadingUnit" parameterType="map">
     DELETE FROM loading_unit
     WHERE id = #{id}
-      AND (company_code = #{companyCode} OR company_code = '*')
+      AND (company_code = #{company_code} OR company_code = '*')
   </delete>
 
   <!-- ──────────────────────────────────────────────────────────
@@ -161,20 +161,20 @@
   <select id="getLoadingUnitPkgs" parameterType="map" resultType="map">
     SELECT *
     FROM loading_unit_pkg
-    WHERE loading_code = #{loadingCode}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE loading_code = #{loading_code}
+      AND (company_code = #{company_code} OR company_code = '*')
     ORDER BY created_date DESC
   </select>
 
   <insert id="insertLoadingUnitPkg" parameterType="map" useGeneratedKeys="true" keyProperty="id">
     INSERT INTO loading_unit_pkg (company_code, loading_code, pkg_code, max_load_qty, load_method, writer)
-    VALUES (#{companyCode}, #{loading_code}, #{pkg_code}, #{max_load_qty}, #{load_method}, #{writer})
+    VALUES (#{company_code}, #{loading_code}, #{pkg_code}, #{max_load_qty}, #{load_method}, #{writer})
   </insert>
 
   <delete id="deleteLoadingUnitPkg" parameterType="map">
     DELETE FROM loading_unit_pkg
     WHERE id = #{id}
-      AND (company_code = #{companyCode} OR company_code = '*')
+      AND (company_code = #{company_code} OR company_code = '*')
   </delete>
 
 </mapper>
diff --git a/backend-spring/src/main/resources/mapper/processWorkStandard.xml b/backend-spring/src/main/resources/mapper/processWorkStandard.xml
index 21e7d5d2..fb055d8f 100644
--- a/backend-spring/src/main/resources/mapper/processWorkStandard.xml
+++ b/backend-spring/src/main/resources/mapper/processWorkStandard.xml
@@ -7,8 +7,8 @@
     <if test="keyword != null and keyword != ''">
       AND (i.item_code ILIKE '%' || #{keyword} || '%' OR i.item_name ILIKE '%' || #{keyword} || '%')
     </if>
-    <if test="itemType != null and itemType != ''">
-      AND i.item_type = #{itemType}
+    <if test="item_type != null and item_type != ''">
+      AND i.item_type = #{item_type}
     </if>
   </sql>
 
@@ -23,8 +23,8 @@
     LEFT JOIN process_routing pr ON i.item_code = pr.item_code
 
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (i.company_code = #{companyCode} OR i.company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (i.company_code = #{company_code} OR i.company_code = '*')
     </if>
     <include refid="processWorkStandardItemSearchCondition"/>
 
@@ -39,8 +39,8 @@
       FROM items i
       LEFT JOIN process_routing pr ON i.item_code = pr.item_code
       WHERE 1=1
-      <if test="companyCode != null and companyCode != &quot;*&quot;">
-        AND (i.company_code = #{companyCode} OR i.company_code = '*')
+      <if test="company_code != null and company_code != &quot;*&quot;">
+        AND (i.company_code = #{company_code} OR i.company_code = '*')
       </if>
       <include refid="processWorkStandardItemSearchCondition"/>
       GROUP BY i.item_code
@@ -56,9 +56,9 @@
 
     LEFT JOIN process_routing_detail prd ON pr.id = prd.routing_id
 
-    WHERE pr.item_code = #{itemCode}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (pr.company_code = #{companyCode} OR pr.company_code = '*')
+    WHERE pr.item_code = #{item_code}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (pr.company_code = #{company_code} OR pr.company_code = '*')
     </if>
 
     GROUP BY pr.id
@@ -68,11 +68,11 @@
 
   <update id="setProcessWorkStandardDefaultVersion" parameterType="map">
     UPDATE process_routing
-    SET is_default = CASE WHEN id = #{versionId} THEN TRUE ELSE FALSE END
+    SET is_default = CASE WHEN id = #{version_id} THEN TRUE ELSE FALSE END
 
-    WHERE item_code = (SELECT item_code FROM process_routing WHERE id = #{versionId})
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE item_code = (SELECT item_code FROM process_routing WHERE id = #{version_id})
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </update>
 
@@ -80,9 +80,9 @@
     UPDATE process_routing
     SET is_default = FALSE
 
-    WHERE id = #{versionId}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE id = #{version_id}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </update>
 
@@ -95,9 +95,9 @@
 
     LEFT JOIN process_routing_detail prd ON pwi.routing_detail_id = prd.id
 
-    WHERE pwi.routing_detail_id = #{routingDetailId}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (pwi.company_code = #{companyCode} OR pwi.company_code = '*')
+    WHERE pwi.routing_detail_id = #{routing_detail_id}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (pwi.company_code = #{company_code} OR pwi.company_code = '*')
     </if>
 
     ORDER BY pwi.sequence_no ASC
@@ -108,24 +108,24 @@
       company_code, routing_detail_id, work_item_code, work_item_name,
       sequence_no, work_time, description, CREATED_DATE, UPDATED_DATE
     ) VALUES (
-      #{companyCode}, #{routingDetailId}, #{workItemCode}, #{workItemName},
-      COALESCE(#{sequenceNo}, 0), COALESCE(#{workTime}, 0), #{description}, NOW(), NOW()
+      #{company_code}, #{routing_detail_id}, #{work_item_code}, #{work_item_name},
+      COALESCE(#{sequence_no}, 0), COALESCE(#{work_time}, 0), #{description}, NOW(), NOW()
     )
   </insert>
 
   <update id="updateProcessWorkStandardWorkItem" parameterType="map">
     UPDATE process_work_item
     <set>
-      <if test="workItemName != null">work_item_name = #{workItemName},</if>
-      <if test="sequenceNo != null">sequence_no = #{sequenceNo},</if>
-      <if test="workTime != null">work_time = #{workTime},</if>
+      <if test="work_item_name != null">work_item_name = #{work_item_name},</if>
+      <if test="sequence_no != null">sequence_no = #{sequence_no},</if>
+      <if test="work_time != null">work_time = #{work_time},</if>
       <if test="description != null">description = #{description},</if>
       UPDATED_DATE = NOW()
     </set>
 
     WHERE id = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </update>
 
@@ -133,17 +133,17 @@
     DELETE FROM process_work_item
 
     WHERE id = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </delete>
 
   <select id="getProcessWorkStandardWorkItemDetailList" parameterType="map" resultType="map">
     SELECT * FROM process_work_item_detail
 
-    WHERE work_item_id = #{workItemId}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE work_item_id = #{work_item_id}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
 
     ORDER BY detail_no ASC
@@ -154,25 +154,25 @@
       company_code, work_item_id, detail_no, content,
       standard_time, quality_point, safety_note, CREATED_DATE, UPDATED_DATE
     ) VALUES (
-      #{companyCode}, #{workItemId}, COALESCE(#{detailNo}, 1), #{content},
-      COALESCE(#{standardTime}, 0), #{qualityPoint}, #{safetyNote}, NOW(), NOW()
+      #{company_code}, #{work_item_id}, COALESCE(#{detail_no}, 1), #{content},
+      COALESCE(#{standard_time}, 0), #{quality_point}, #{safety_note}, NOW(), NOW()
     )
   </insert>
 
   <update id="updateProcessWorkStandardWorkItemDetail" parameterType="map">
     UPDATE process_work_item_detail
     <set>
-      <if test="detailNo != null">detail_no = #{detailNo},</if>
+      <if test="detail_no != null">detail_no = #{detail_no},</if>
       <if test="content != null">content = #{content},</if>
-      <if test="standardTime != null">standard_time = #{standardTime},</if>
-      <if test="qualityPoint != null">quality_point = #{qualityPoint},</if>
-      <if test="safetyNote != null">safety_note = #{safetyNote},</if>
+      <if test="standard_time != null">standard_time = #{standard_time},</if>
+      <if test="quality_point != null">quality_point = #{quality_point},</if>
+      <if test="safety_note != null">safety_note = #{safety_note},</if>
       UPDATED_DATE = NOW()
     </set>
 
     WHERE id = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </update>
 
@@ -180,8 +180,8 @@
     DELETE FROM process_work_item_detail
 
     WHERE id = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </delete>
 
@@ -192,9 +192,9 @@
 
     LEFT JOIN items i ON pri.item_code = i.item_code
 
-    WHERE pri.screen_code = #{screenCode}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (pri.company_code = #{companyCode} OR pri.company_code = '*')
+    WHERE pri.screen_code = #{screen_code}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (pri.company_code = #{company_code} OR pri.company_code = '*')
     </if>
 
     ORDER BY pri.id ASC
@@ -204,7 +204,7 @@
     INSERT INTO process_registered_item (
       company_code, screen_code, item_code, routing_id, CREATED_DATE, UPDATED_DATE
     ) VALUES (
-      #{companyCode}, #{screenCode}, #{itemCode}, #{routingId}, NOW(), NOW()
+      #{company_code}, #{screen_code}, #{item_code}, #{routing_id}, NOW(), NOW()
     )
   </insert>
 
@@ -213,7 +213,7 @@
       company_code, screen_code, item_code, routing_id, CREATED_DATE, UPDATED_DATE
     ) VALUES
     <foreach collection="items" item="item" separator=",">
-      (#{companyCode}, #{item.screenCode}, #{item.itemCode}, #{item.routingId}, NOW(), NOW())
+      (#{company_code}, #{item.screenCode}, #{item.itemCode}, #{item.routingId}, NOW(), NOW())
     </foreach>
   </insert>
 
@@ -221,8 +221,8 @@
     DELETE FROM process_registered_item
 
     WHERE id = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </delete>
 
diff --git a/backend-spring/src/main/resources/mapper/production.xml b/backend-spring/src/main/resources/mapper/production.xml
index cc8fdc3c..13fc292c 100644
--- a/backend-spring/src/main/resources/mapper/production.xml
+++ b/backend-spring/src/main/resources/mapper/production.xml
@@ -16,23 +16,23 @@
     FROM PRODUCTION_PLAN_MNG
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
-    <if test="itemCode != null and itemCode != ''">
-      AND ITEM_CODE ILIKE CONCAT('%', #{itemCode}, '%')
+    <if test="item_code != null and item_code != ''">
+      AND ITEM_CODE ILIKE CONCAT('%', #{item_code}, '%')
     </if>
-    <if test="itemName != null and itemName != ''">
-      AND ITEM_NAME ILIKE CONCAT('%', #{itemName}, '%')
+    <if test="item_name != null and item_name != ''">
+      AND ITEM_NAME ILIKE CONCAT('%', #{item_name}, '%')
     </if>
     <if test="status != null and status != ''">
       AND STATUS = #{status}
     </if>
-    <if test="productType != null and productType != ''">
-      AND PRODUCT_TYPE = #{productType}
+    <if test="product_type != null and product_type != ''">
+      AND PRODUCT_TYPE = #{product_type}
     </if>
-    <if test="startDateFrom != null and startDateFrom != ''">
-      AND START_DATE &gt;= #{startDateFrom}::DATE
+    <if test="start_date_from != null and start_date_from != ''">
+      AND START_DATE &gt;= #{start_date_from}::DATE
     </if>
-    <if test="startDateTo != null and startDateTo != ''">
-      AND START_DATE &lt;= #{startDateTo}::DATE
+    <if test="start_date_to != null and start_date_to != ''">
+      AND START_DATE &lt;= #{start_date_to}::DATE
     </if>
     ORDER BY CREATED_DATE DESC
     <include refid="common.pagination"/>
@@ -43,23 +43,23 @@
     FROM PRODUCTION_PLAN_MNG
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
-    <if test="itemCode != null and itemCode != ''">
-      AND ITEM_CODE ILIKE CONCAT('%', #{itemCode}, '%')
+    <if test="item_code != null and item_code != ''">
+      AND ITEM_CODE ILIKE CONCAT('%', #{item_code}, '%')
     </if>
-    <if test="itemName != null and itemName != ''">
-      AND ITEM_NAME ILIKE CONCAT('%', #{itemName}, '%')
+    <if test="item_name != null and item_name != ''">
+      AND ITEM_NAME ILIKE CONCAT('%', #{item_name}, '%')
     </if>
     <if test="status != null and status != ''">
       AND STATUS = #{status}
     </if>
-    <if test="productType != null and productType != ''">
-      AND PRODUCT_TYPE = #{productType}
+    <if test="product_type != null and product_type != ''">
+      AND PRODUCT_TYPE = #{product_type}
     </if>
-    <if test="startDateFrom != null and startDateFrom != ''">
-      AND START_DATE &gt;= #{startDateFrom}::DATE
+    <if test="start_date_from != null and start_date_from != ''">
+      AND START_DATE &gt;= #{start_date_from}::DATE
     </if>
-    <if test="startDateTo != null and startDateTo != ''">
-      AND START_DATE &lt;= #{startDateTo}::DATE
+    <if test="start_date_to != null and start_date_to != ''">
+      AND START_DATE &lt;= #{start_date_to}::DATE
     </if>
   </select>
 
@@ -88,45 +88,45 @@
       WORK_SHIFT, WORK_ORDER_NO, MANAGER_NAME, ORDER_NO, PARTNER_ID,
       PARENT_PLAN_ID, REMARKS, CREATED_BY, CREATED_DATE, UPDATED_DATE
     ) VALUES (
-      #{companyCode}, #{planNo}, #{planDate}, #{itemCode}, #{itemName},
-      #{productType}, #{planQty}, #{completedQty}, #{progressRate},
-      #{startDate}, #{endDate}, #{dueDate},
-      #{equipmentId}, #{equipmentCode}, #{equipmentName},
-      #{status}, #{priority}, #{hourlyCapacity}, #{dailyCapacity}, #{leadTime},
-      #{workShift}, #{workOrderNo}, #{managerName}, #{orderNo}, #{partnerId},
-      #{parentPlanId}, #{remarks}, #{createdBy}, NOW(), NOW()
+      #{company_code}, #{plan_no}, #{plan_date}, #{item_code}, #{item_name},
+      #{product_type}, #{plan_qty}, #{completed_qty}, #{progress_rate},
+      #{start_date}, #{end_date}, #{due_date},
+      #{equipment_id}, #{equipment_code}, #{equipment_name},
+      #{status}, #{priority}, #{hourly_capacity}, #{daily_capacity}, #{lead_time},
+      #{work_shift}, #{work_order_no}, #{manager_name}, #{order_no}, #{partner_id},
+      #{parent_plan_id}, #{remarks}, #{created_by}, NOW(), NOW()
     )
   </insert>
 
   <update id="updateProduction" parameterType="map">
     UPDATE PRODUCTION_PLAN_MNG
     <set>
-      <if test="planQty != null">
-        PLAN_QTY = #{planQty},
+      <if test="plan_qty != null">
+        PLAN_QTY = #{plan_qty},
       </if>
-      <if test="completedQty != null">
-        COMPLETED_QTY = #{completedQty},
+      <if test="completed_qty != null">
+        COMPLETED_QTY = #{completed_qty},
       </if>
-      <if test="progressRate != null">
-        PROGRESS_RATE = #{progressRate},
+      <if test="progress_rate != null">
+        PROGRESS_RATE = #{progress_rate},
       </if>
-      <if test="startDate != null">
-        START_DATE = #{startDate},
+      <if test="start_date != null">
+        START_DATE = #{start_date},
       </if>
-      <if test="endDate != null">
-        END_DATE = #{endDate},
+      <if test="end_date != null">
+        END_DATE = #{end_date},
       </if>
-      <if test="dueDate != null">
-        DUE_DATE = #{dueDate},
+      <if test="due_date != null">
+        DUE_DATE = #{due_date},
       </if>
-      <if test="equipmentId != null">
-        EQUIPMENT_ID = #{equipmentId},
+      <if test="equipment_id != null">
+        EQUIPMENT_ID = #{equipment_id},
       </if>
-      <if test="equipmentCode != null">
-        EQUIPMENT_CODE = #{equipmentCode},
+      <if test="equipment_code != null">
+        EQUIPMENT_CODE = #{equipment_code},
       </if>
-      <if test="equipmentName != null">
-        EQUIPMENT_NAME = #{equipmentName},
+      <if test="equipment_name != null">
+        EQUIPMENT_NAME = #{equipment_name},
       </if>
       <if test="status != null">
         STATUS = #{status},
@@ -134,29 +134,29 @@
       <if test="priority != null">
         PRIORITY = #{priority},
       </if>
-      <if test="managerName != null">
-        MANAGER_NAME = #{managerName},
+      <if test="manager_name != null">
+        MANAGER_NAME = #{manager_name},
       </if>
-      <if test="workShift != null">
-        WORK_SHIFT = #{workShift},
+      <if test="work_shift != null">
+        WORK_SHIFT = #{work_shift},
       </if>
       <if test="remarks != null">
         REMARKS = #{remarks},
       </if>
-      <if test="itemCode != null">
-        ITEM_CODE = #{itemCode},
+      <if test="item_code != null">
+        ITEM_CODE = #{item_code},
       </if>
-      <if test="itemName != null">
-        ITEM_NAME = #{itemName},
+      <if test="item_name != null">
+        ITEM_NAME = #{item_name},
       </if>
-      <if test="productType != null">
-        PRODUCT_TYPE = #{productType},
+      <if test="product_type != null">
+        PRODUCT_TYPE = #{product_type},
       </if>
-      <if test="orderNo != null">
-        ORDER_NO = #{orderNo},
+      <if test="order_no != null">
+        ORDER_NO = #{order_no},
       </if>
-      <if test="updatedBy != null">
-        UPDATED_BY = #{updatedBy},
+      <if test="updated_by != null">
+        UPDATED_BY = #{updated_by},
       </if>
       UPDATED_DATE = NOW()
     </set>
diff --git a/backend-spring/src/main/resources/mapper/report.xml b/backend-spring/src/main/resources/mapper/report.xml
index f7db3669..6f86828f 100644
--- a/backend-spring/src/main/resources/mapper/report.xml
+++ b/backend-spring/src/main/resources/mapper/report.xml
@@ -10,11 +10,11 @@
       AND (REPORT_NAME_KOR ILIKE '%' || #{keyword} || '%'
         OR REPORT_NAME_ENG ILIKE '%' || #{keyword} || '%')
     </if>
-    <if test="reportType != null and reportType != ''">
-      AND REPORT_TYPE = #{reportType}
+    <if test="report_type != null and report_type != ''">
+      AND REPORT_TYPE = #{report_type}
     </if>
-    <if test="useYn != null and useYn != ''">
-      AND USE_YN = #{useYn}
+    <if test="use_yn != null and use_yn != ''">
+      AND USE_YN = #{use_yn}
     </if>
   </sql>
 
@@ -63,7 +63,7 @@
         , UPDATED_DATE
         , UPDATED_BY
     FROM REPORT_MASTER
-    WHERE REPORT_ID = #{reportId}
+    WHERE REPORT_ID = #{report_id}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -79,15 +79,15 @@
         , USE_YN
         , CREATED_BY
     ) VALUES (
-        #{reportId}
-        , #{reportNameKor}
-        , #{reportNameEng, jdbcType=VARCHAR}
-        , #{templateId, jdbcType=VARCHAR}
-        , #{reportType}
-        , #{companyCode}
+        #{report_id}
+        , #{report_name_kor}
+        , #{report_name_eng, jdbcType=VARCHAR}
+        , #{template_id, jdbcType=VARCHAR}
+        , #{report_type}
+        , #{company_code}
         , #{description, jdbcType=VARCHAR}
         , 'Y'
-        , #{createdBy}
+        , #{created_by}
     )
   </insert>
 
@@ -95,19 +95,19 @@
     UPDATE REPORT_MASTER
     SET
         UPDATED_DATE = NOW()
-        <if test="reportNameKor != null">, REPORT_NAME_KOR = #{reportNameKor}</if>
-        <if test="reportNameEng != null">, REPORT_NAME_ENG = #{reportNameEng}</if>
-        <if test="reportType != null">, REPORT_TYPE = #{reportType}</if>
+        <if test="report_name_kor != null">, REPORT_NAME_KOR = #{report_name_kor}</if>
+        <if test="report_name_eng != null">, REPORT_NAME_ENG = #{report_name_eng}</if>
+        <if test="report_type != null">, REPORT_TYPE = #{report_type}</if>
         <if test="description != null">, DESCRIPTION = #{description}</if>
-        <if test="useYn != null">, USE_YN = #{useYn}</if>
-        <if test="updatedBy != null">, UPDATED_BY = #{updatedBy}</if>
-    WHERE REPORT_ID = #{reportId}
+        <if test="use_yn != null">, USE_YN = #{use_yn}</if>
+        <if test="updated_by != null">, UPDATED_BY = #{updated_by}</if>
+    WHERE REPORT_ID = #{report_id}
     <include refid="common.companyCodeFilter"/>
   </update>
 
   <delete id="deleteReport" parameterType="map">
     DELETE FROM REPORT_MASTER
-    WHERE REPORT_ID = #{reportId}
+    WHERE REPORT_ID = #{report_id}
     <include refid="common.companyCodeFilter"/>
   </delete>
 
@@ -130,7 +130,7 @@
         , UPDATED_DATE
         , UPDATED_BY
     FROM REPORT_LAYOUT
-    WHERE REPORT_ID = #{reportId}
+    WHERE REPORT_ID = #{report_id}
   </select>
 
   <insert id="insertReportLayout" parameterType="map">
@@ -147,39 +147,39 @@
         , COMPONENTS
         , CREATED_BY
     ) VALUES (
-        #{layoutId}
-        , #{reportId}
-        , #{canvasWidth, jdbcType=INTEGER}
-        , #{canvasHeight, jdbcType=INTEGER}
-        , #{pageOrientation, jdbcType=VARCHAR}
-        , #{marginTop, jdbcType=NUMERIC}
-        , #{marginBottom, jdbcType=NUMERIC}
-        , #{marginLeft, jdbcType=NUMERIC}
-        , #{marginRight, jdbcType=NUMERIC}
+        #{layout_id}
+        , #{report_id}
+        , #{canvas_width, jdbcType=INTEGER}
+        , #{canvas_height, jdbcType=INTEGER}
+        , #{page_orientation, jdbcType=VARCHAR}
+        , #{margin_top, jdbcType=NUMERIC}
+        , #{margin_bottom, jdbcType=NUMERIC}
+        , #{margin_left, jdbcType=NUMERIC}
+        , #{margin_right, jdbcType=NUMERIC}
         , #{components}::jsonb
-        , #{createdBy}
+        , #{created_by}
     )
   </insert>
 
   <update id="updateReportLayout" parameterType="map">
     UPDATE REPORT_LAYOUT
     SET
-        CANVAS_WIDTH = #{canvasWidth, jdbcType=INTEGER}
-        , CANVAS_HEIGHT = #{canvasHeight, jdbcType=INTEGER}
-        , PAGE_ORIENTATION = #{pageOrientation, jdbcType=VARCHAR}
-        , MARGIN_TOP = #{marginTop, jdbcType=NUMERIC}
-        , MARGIN_BOTTOM = #{marginBottom, jdbcType=NUMERIC}
-        , MARGIN_LEFT = #{marginLeft, jdbcType=NUMERIC}
-        , MARGIN_RIGHT = #{marginRight, jdbcType=NUMERIC}
+        CANVAS_WIDTH = #{canvas_width, jdbcType=INTEGER}
+        , CANVAS_HEIGHT = #{canvas_height, jdbcType=INTEGER}
+        , PAGE_ORIENTATION = #{page_orientation, jdbcType=VARCHAR}
+        , MARGIN_TOP = #{margin_top, jdbcType=NUMERIC}
+        , MARGIN_BOTTOM = #{margin_bottom, jdbcType=NUMERIC}
+        , MARGIN_LEFT = #{margin_left, jdbcType=NUMERIC}
+        , MARGIN_RIGHT = #{margin_right, jdbcType=NUMERIC}
         , COMPONENTS = #{components}::jsonb
         , UPDATED_DATE = NOW()
-        , UPDATED_BY = #{updatedBy, jdbcType=VARCHAR}
-    WHERE REPORT_ID = #{reportId}
+        , UPDATED_BY = #{updated_by, jdbcType=VARCHAR}
+    WHERE REPORT_ID = #{report_id}
   </update>
 
   <delete id="deleteReportLayout" parameterType="map">
     DELETE FROM REPORT_LAYOUT
-    WHERE REPORT_ID = #{reportId}
+    WHERE REPORT_ID = #{report_id}
   </delete>
 
   <!-- ===== Report Query ===== -->
@@ -199,7 +199,7 @@
         , UPDATED_DATE
         , UPDATED_BY
     FROM REPORT_QUERY
-    WHERE REPORT_ID = #{reportId}
+    WHERE REPORT_ID = #{report_id}
     ORDER BY DISPLAY_ORDER ASC, CREATED_DATE ASC
   </select>
 
@@ -218,8 +218,8 @@
         , UPDATED_DATE
         , UPDATED_BY
     FROM REPORT_QUERY
-    WHERE QUERY_ID = #{queryId}
-    AND REPORT_ID = #{reportId}
+    WHERE QUERY_ID = #{query_id}
+    AND REPORT_ID = #{report_id}
   </select>
 
   <insert id="insertReportQuery" parameterType="map">
@@ -234,21 +234,21 @@
         , DISPLAY_ORDER
         , CREATED_BY
     ) VALUES (
-        #{queryId}
-        , #{reportId}
-        , #{queryName}
-        , #{queryType}
-        , #{sqlQuery}
+        #{query_id}
+        , #{report_id}
+        , #{query_name}
+        , #{query_type}
+        , #{sql_query}
         , #{parameters}::jsonb
-        , #{externalConnectionId, jdbcType=BIGINT}
-        , #{displayOrder, jdbcType=INTEGER}
-        , #{createdBy}
+        , #{external_connection_id, jdbcType=BIGINT}
+        , #{display_order, jdbcType=INTEGER}
+        , #{created_by}
     )
   </insert>
 
   <delete id="deleteReportQueriesByReportId" parameterType="map">
     DELETE FROM REPORT_QUERY
-    WHERE REPORT_ID = #{reportId}
+    WHERE REPORT_ID = #{report_id}
   </delete>
 
   <!-- ===== Report Template ===== -->
@@ -293,7 +293,7 @@
         , UPDATED_DATE
         , UPDATED_BY
     FROM REPORT_TEMPLATE
-    WHERE TEMPLATE_ID = #{templateId}
+    WHERE TEMPLATE_ID = #{template_id}
   </select>
 
   <insert id="insertReportTemplate" parameterType="map">
@@ -310,23 +310,23 @@
         , SORT_ORDER
         , CREATED_BY
     ) VALUES (
-        #{templateId}
-        , #{templateNameKor}
-        , #{templateNameEng, jdbcType=VARCHAR}
-        , #{templateType}
+        #{template_id}
+        , #{template_name_kor}
+        , #{template_name_eng, jdbcType=VARCHAR}
+        , #{template_type}
         , 'N'
         , #{description, jdbcType=VARCHAR}
-        , #{layoutConfig}::jsonb
-        , #{defaultQueries}::jsonb
+        , #{layout_config}::jsonb
+        , #{default_queries}::jsonb
         , 'Y'
-        , COALESCE(#{sortOrder, jdbcType=INTEGER}, 999)
-        , #{createdBy}
+        , COALESCE(#{sort_order, jdbcType=INTEGER}, 999)
+        , #{created_by}
     )
   </insert>
 
   <delete id="deleteReportTemplate" parameterType="map">
     DELETE FROM REPORT_TEMPLATE
-    WHERE TEMPLATE_ID = #{templateId}
+    WHERE TEMPLATE_ID = #{template_id}
     AND IS_SYSTEM = 'N'
   </delete>
 
@@ -340,7 +340,7 @@
         , CREATED_DATE
         , CREATED_BY
     FROM REPORT_MENU_MAPPING
-    WHERE REPORT_ID = #{reportId}
+    WHERE REPORT_ID = #{report_id}
     ORDER BY CREATED_DATE ASC
   </select>
 
@@ -351,16 +351,16 @@
         , COMPANY_CODE
         , CREATED_BY
     ) VALUES (
-        #{reportId}
-        , #{menuObjid}
-        , #{companyCode}
-        , #{createdBy}
+        #{report_id}
+        , #{menu_objid}
+        , #{company_code}
+        , #{created_by}
     )
   </insert>
 
   <delete id="deleteReportMenuMappingsByReportId" parameterType="map">
     DELETE FROM REPORT_MENU_MAPPING
-    WHERE REPORT_ID = #{reportId}
+    WHERE REPORT_ID = #{report_id}
   </delete>
 
 </mapper>
diff --git a/backend-spring/src/main/resources/mapper/riskAlert.xml b/backend-spring/src/main/resources/mapper/riskAlert.xml
index 49246318..728cef7d 100644
--- a/backend-spring/src/main/resources/mapper/riskAlert.xml
+++ b/backend-spring/src/main/resources/mapper/riskAlert.xml
@@ -13,8 +13,8 @@
     <if test="severity != null and severity != ''">
       AND SEVERITY = #{severity}
     </if>
-    <if test="isActive != null and isActive != ''">
-      AND IS_ACTIVE = #{isActive}
+    <if test="is_active != null and is_active != ''">
+      AND IS_ACTIVE = #{is_active}
     </if>
   </sql>
 
@@ -65,11 +65,11 @@
     FROM RISK_ALERT
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
-    <if test="alertType != null and alertType != ''">
-      AND ALERT_TYPE = #{alertType}
+    <if test="alert_type != null and alert_type != ''">
+      AND ALERT_TYPE = #{alert_type}
     </if>
-    <if test="isActive != null and isActive != ''">
-      AND IS_ACTIVE = #{isActive}
+    <if test="is_active != null and is_active != ''">
+      AND IS_ACTIVE = #{is_active}
     </if>
     ORDER BY CREATED_DATE DESC
   </select>
diff --git a/backend-spring/src/main/resources/mapper/role.xml b/backend-spring/src/main/resources/mapper/role.xml
index 27a8b96b..bd465500 100644
--- a/backend-spring/src/main/resources/mapper/role.xml
+++ b/backend-spring/src/main/resources/mapper/role.xml
@@ -17,8 +17,8 @@
         , CREATED_DATE
     FROM AUTHORITY_MASTER
     WHERE 1=1
-    <if test="companyCode != null and companyCode != ''">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != ''">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     <if test="search != null and search != ''">
       AND AUTH_NAME ILIKE '%' || #{search} || '%'
@@ -51,9 +51,9 @@
         , WRITER
         , CREATED_DATE
     ) VALUES (
-        #{authName}
-        , #{authCode}
-        , #{companyCode}
+        #{auth_name}
+        , #{auth_code}
+        , #{company_code}
         , 'active'
         , #{writer}
         , NOW()
@@ -64,11 +64,11 @@
   <update id="updateRoleGroup" parameterType="map">
     UPDATE AUTHORITY_MASTER
     SET
-      <if test="authName != null">
-        AUTH_NAME = #{authName},
+      <if test="auth_name != null">
+        AUTH_NAME = #{auth_name},
       </if>
-      <if test="authCode != null">
-        AUTH_CODE = #{authCode},
+      <if test="auth_code != null">
+        AUTH_CODE = #{auth_code},
       </if>
       <if test="status != null">
         STATUS = #{status},
@@ -98,7 +98,7 @@
         , UI.EMAIL
     FROM AUTHORITY_SUB_USER ASU
     LEFT JOIN USER_INFO UI ON ASU.USER_ID = UI.USER_ID
-    WHERE ASU.MASTER_OBJID = #{masterObjid}
+    WHERE ASU.MASTER_OBJID = #{master_objid}
     ORDER BY ASU.CREATED_DATE ASC
   </select>
 
@@ -111,24 +111,24 @@
         , CREATED_DATE
     ) VALUES
     <foreach collection="userIds" item="userId" separator=",">
-      (#{masterObjid}, #{userId}, #{writer}, NOW())
+      (#{master_objid}, #{user_id}, #{writer}, NOW())
     </foreach>
   </insert>
 
   <!-- 지정 멤버 일괄 삭제 -->
   <delete id="deleteRoleMembers" parameterType="map">
     DELETE FROM AUTHORITY_SUB_USER
-    WHERE MASTER_OBJID = #{masterObjid}
+    WHERE MASTER_OBJID = #{master_objid}
     AND USER_ID IN
     <foreach collection="userIds" item="userId" open="(" separator="," close=")">
-      #{userId}
+      #{user_id}
     </foreach>
   </delete>
 
   <!-- 그룹의 전체 멤버 삭제 -->
   <delete id="deleteAllRoleMembers" parameterType="map">
     DELETE FROM AUTHORITY_SUB_USER
-    WHERE MASTER_OBJID = #{masterObjid}
+    WHERE MASTER_OBJID = #{master_objid}
   </delete>
 
   <!-- ──────────────────────────────────────────────────
@@ -147,14 +147,14 @@
         , MI.SORT_ORDER
     FROM AUTHORITY_SUB_MENU ASM
     INNER JOIN MENU_INFO MI ON ASM.MENU_OBJID = MI.OBJID
-    WHERE ASM.MASTER_OBJID = #{authObjid}
+    WHERE ASM.MASTER_OBJID = #{auth_objid}
     ORDER BY MI.SORT_ORDER ASC
   </select>
 
   <!-- 해당 권한 그룹의 메뉴 권한 전체 삭제 -->
   <delete id="deleteMenuPermissions" parameterType="map">
     DELETE FROM AUTHORITY_SUB_MENU
-    WHERE MASTER_OBJID = #{authObjid}
+    WHERE MASTER_OBJID = #{auth_objid}
   </delete>
 
   <!-- 메뉴 권한 일괄 추가 -->
@@ -166,7 +166,7 @@
         , CREATED_DATE
     ) VALUES
     <foreach collection="permissions" item="perm" separator=",">
-      (#{authObjid}, #{perm.menuObjid}, #{writer}, NOW())
+      (#{auth_objid}, #{perm.menuObjid}, #{writer}, NOW())
     </foreach>
   </insert>
 
@@ -185,8 +185,8 @@
         , USE_YN
     FROM MENU_INFO
     WHERE 1=1
-    <if test="companyCode != null and companyCode != ''">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != ''">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     ORDER BY SORT_ORDER ASC, LEV ASC
   </select>
@@ -203,9 +203,9 @@
         , AM.STATUS
     FROM AUTHORITY_MASTER AM
     INNER JOIN AUTHORITY_SUB_USER ASU ON AM.OBJID = ASU.MASTER_OBJID
-    WHERE ASU.USER_ID = #{userId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (AM.COMPANY_CODE = #{companyCode} OR AM.COMPANY_CODE = '*')
+    WHERE ASU.USER_ID = #{user_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND (AM.COMPANY_CODE = #{company_code} OR AM.COMPANY_CODE = '*')
     </if>
     ORDER BY AM.AUTH_NAME ASC
   </select>
diff --git a/backend-spring/src/main/resources/mapper/salesReport.xml b/backend-spring/src/main/resources/mapper/salesReport.xml
index f8edcb4e..341273be 100644
--- a/backend-spring/src/main/resources/mapper/salesReport.xml
+++ b/backend-spring/src/main/resources/mapper/salesReport.xml
@@ -24,14 +24,14 @@
 
   <!-- 검색 조건 (table alias 포함) -->
   <sql id="salesReportSearchCondition">
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (SOM.COMPANY_CODE = #{companyCode} OR SOM.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (SOM.COMPANY_CODE = #{company_code} OR SOM.COMPANY_CODE = '*')
     </if>
-    <if test="startDate != null and startDate != ''">
-      AND COALESCE(SOD.DUE_DATE, SOM.ORDER_DATE::TEXT, SOM.CREATED_DATE::DATE::TEXT) &gt;= #{startDate}
+    <if test="start_date != null and start_date != ''">
+      AND COALESCE(SOD.DUE_DATE, SOM.ORDER_DATE::TEXT, SOM.CREATED_DATE::DATE::TEXT) &gt;= #{start_date}
     </if>
-    <if test="endDate != null and endDate != ''">
-      AND COALESCE(SOD.DUE_DATE, SOM.ORDER_DATE::TEXT, SOM.CREATED_DATE::DATE::TEXT) &lt;= #{endDate}
+    <if test="end_date != null and end_date != ''">
+      AND COALESCE(SOD.DUE_DATE, SOM.ORDER_DATE::TEXT, SOM.CREATED_DATE::DATE::TEXT) &lt;= #{end_date}
     </if>
   </sql>
 
@@ -108,8 +108,8 @@
     SELECT DISTINCT CUSTOMER_CODE AS VALUE, CUSTOMER_NAME AS LABEL
     FROM CUSTOMER_MNG
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     ORDER BY CUSTOMER_NAME
   </select>
@@ -119,8 +119,8 @@
     SELECT DISTINCT STATUS AS VALUE, STATUS AS LABEL
     FROM SALES_ORDER_MNG
     WHERE STATUS IS NOT NULL
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     ORDER BY STATUS
   </select>
@@ -135,30 +135,30 @@
       SOM.UPDATED_DATE AS UPDATED_DATE
     FROM SALES_ORDER_MNG SOM
     WHERE SOM.ORDER_NO = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (SOM.COMPANY_CODE = #{companyCode} OR SOM.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (SOM.COMPANY_CODE = #{company_code} OR SOM.COMPANY_CODE = '*')
     </if>
   </select>
 
   <insert id="insertSalesReport" parameterType="map">
     INSERT INTO SALES_ORDER_MNG (COMPANY_CODE, CREATED_DATE, UPDATED_DATE)
-    VALUES (#{companyCode}, NOW(), NOW())
+    VALUES (#{company_code}, NOW(), NOW())
   </insert>
 
   <update id="updateSalesReport" parameterType="map">
     UPDATE SALES_ORDER_MNG
     SET UPDATED_DATE = NOW()
     WHERE ORDER_NO = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </update>
 
   <delete id="deleteSalesReport" parameterType="map">
     DELETE FROM SALES_ORDER_MNG
     WHERE ORDER_NO = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
diff --git a/backend-spring/src/main/resources/mapper/schedule.xml b/backend-spring/src/main/resources/mapper/schedule.xml
index 74f63a18..1ca1d5c3 100644
--- a/backend-spring/src/main/resources/mapper/schedule.xml
+++ b/backend-spring/src/main/resources/mapper/schedule.xml
@@ -4,20 +4,20 @@
 <mapper namespace="schedule">
 
   <sql id="scheduleSearchCondition">
-    <if test="scheduleType != null and scheduleType != ''">
-      AND schedule_type = #{scheduleType}
+    <if test="schedule_type != null and schedule_type != ''">
+      AND schedule_type = #{schedule_type}
     </if>
-    <if test="resourceType != null and resourceType != ''">
-      AND resource_type = #{resourceType}
+    <if test="resource_type != null and resource_type != ''">
+      AND resource_type = #{resource_type}
     </if>
-    <if test="resourceId != null and resourceId != ''">
-      AND resource_id = #{resourceId}
+    <if test="resource_id != null and resource_id != ''">
+      AND resource_id = #{resource_id}
     </if>
-    <if test="startDate != null and startDate != ''">
-      AND end_date >= #{startDate}::date
+    <if test="start_date != null and start_date != ''">
+      AND end_date >= #{start_date}::date
     </if>
-    <if test="endDate != null and endDate != ''">
-      AND start_date &lt;= #{endDate}::date
+    <if test="end_date != null and end_date != ''">
+      AND start_date &lt;= #{end_date}::date
     </if>
     <if test="status != null and status != ''">
       AND status = #{status}
@@ -55,7 +55,7 @@
   <select id="getScheduleInfo" parameterType="map" resultType="map">
     SELECT * FROM schedule_mng
 
-    WHERE schedule_id = #{scheduleId}
+    WHERE schedule_id = #{schedule_id}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -63,15 +63,15 @@
   <select id="getExistingScheduleList" parameterType="map" resultType="map">
     SELECT * FROM schedule_mng
 
-    WHERE schedule_type = #{scheduleType}
-    <if test="resourceIds != null and !resourceIds.isEmpty()">
+    WHERE schedule_type = #{schedule_type}
+    <if test="resource_ids != null and !resource_ids.is_empty()">
       AND resource_id IN
       <foreach item="rid" collection="resourceIds" open="(" separator="," close=")">
         #{rid}
       </foreach>
     </if>
-    AND end_date >= #{periodStart}::date
-    AND start_date &lt;= #{periodEnd}::date
+    AND end_date >= #{period_start}::date
+    AND start_date &lt;= #{period_end}::date
     AND auto_generated = TRUE
     <include refid="common.companyCodeFilter"/>
   </select>
@@ -86,7 +86,7 @@
       auto_generated, generated_at, generated_by,
       metadata, created_by, updated_by
     ) VALUES (
-      #{companyCode}, #{schedule_type}, #{schedule_name},
+      #{company_code}, #{schedule_type}, #{schedule_name},
       #{resource_type}, #{resource_id}, #{resource_name},
       #{start_date}::timestamp, #{end_date}::timestamp,
       <choose>
@@ -120,17 +120,17 @@
       <if test="start_date != null">start_date = #{start_date}::timestamp,</if>
       <if test="end_date != null">end_date = #{end_date}::timestamp,</if>
       <if test="updated_by != null">updated_by = #{updated_by},</if>
-      schedule_id = #{scheduleId}
+      schedule_id = #{schedule_id}
     </set>
 
-    WHERE schedule_id = #{scheduleId}
+    WHERE schedule_id = #{schedule_id}
     <include refid="common.companyCodeFilter"/>
   </update>
 
   <delete id="deleteSchedule" parameterType="map">
     DELETE FROM schedule_mng
 
-    WHERE schedule_id = #{scheduleId}
+    WHERE schedule_id = #{schedule_id}
     <include refid="common.companyCodeFilter"/>
   </delete>
 
@@ -148,7 +148,7 @@
   <!-- 스케줄 이력 저장 -->
   <insert id="insertScheduleHistory" parameterType="map">
     INSERT INTO schedule_history (company_code, schedule_id, action, changed_by)
-    VALUES (#{companyCode}, #{scheduleId}, #{action}, #{changedBy})
+    VALUES (#{company_code}, #{schedule_id}, #{action}, #{changed_by})
   </insert>
 
 </mapper>
diff --git a/backend-spring/src/main/resources/mapper/screenEmbedding.xml b/backend-spring/src/main/resources/mapper/screenEmbedding.xml
index 6e4da2b1..cf547d84 100644
--- a/backend-spring/src/main/resources/mapper/screenEmbedding.xml
+++ b/backend-spring/src/main/resources/mapper/screenEmbedding.xml
@@ -15,7 +15,7 @@
     FROM SCREEN_EMBEDDING SE
     LEFT JOIN SCREEN_DEFINITIONS PS ON SE.PARENT_SCREEN_ID = PS.SCREEN_ID
     LEFT JOIN SCREEN_DEFINITIONS CS ON SE.CHILD_SCREEN_ID  = CS.SCREEN_ID
-    WHERE SE.PARENT_SCREEN_ID = #{parentScreenId}
+    WHERE SE.PARENT_SCREEN_ID = #{parent_screen_id}
     <include refid="common.companyCodeFilter"/>
     ORDER BY SE.POSITION, SE.CREATED_DATE
   </select>
@@ -38,8 +38,8 @@
       PARENT_SCREEN_ID, CHILD_SCREEN_ID, POSITION, MODE,
       CONFIG, COMPANY_CODE, CREATED_BY, CREATED_DATE, UPDATED_DATE
     ) VALUES (
-      #{parentScreenId}, #{childScreenId}, #{position}, #{mode},
-      #{config}::JSONB, #{companyCode}, #{userId}, NOW(), NOW()
+      #{parent_screen_id}, #{child_screen_id}, #{position}, #{mode},
+      #{config}::JSONB, #{company_code}, #{user_id}, NOW(), NOW()
     )
   </insert>
 
@@ -73,8 +73,8 @@
     FROM SCREEN_DATA_TRANSFER SDT
     LEFT JOIN SCREEN_DEFINITIONS SS ON SDT.SOURCE_SCREEN_ID = SS.SCREEN_ID
     LEFT JOIN SCREEN_DEFINITIONS TS ON SDT.TARGET_SCREEN_ID = TS.SCREEN_ID
-    WHERE SDT.SOURCE_SCREEN_ID = #{sourceScreenId}
-      AND SDT.TARGET_SCREEN_ID = #{targetScreenId}
+    WHERE SDT.SOURCE_SCREEN_ID = #{source_screen_id}
+      AND SDT.TARGET_SCREEN_ID = #{target_screen_id}
     <include refid="common.companyCodeFilter"/>
   </select>
 
@@ -91,16 +91,16 @@
       SOURCE_SCREEN_ID, TARGET_SCREEN_ID, SOURCE_COMPONENT_ID, SOURCE_COMPONENT_TYPE,
       DATA_RECEIVERS, BUTTON_CONFIG, COMPANY_CODE, CREATED_BY, CREATED_DATE, UPDATED_DATE
     ) VALUES (
-      #{sourceScreenId}, #{targetScreenId}, #{sourceComponentId}, #{sourceComponentType},
-      #{dataReceivers}::JSONB, #{buttonConfig}::JSONB, #{companyCode}, #{userId}, NOW(), NOW()
+      #{source_screen_id}, #{target_screen_id}, #{source_component_id}, #{source_component_type},
+      #{data_receivers}::JSONB, #{button_config}::JSONB, #{company_code}, #{user_id}, NOW(), NOW()
     )
   </insert>
 
   <update id="updateScreenDataTransfer" parameterType="map">
     UPDATE SCREEN_DATA_TRANSFER
     <set>
-      <if test="dataReceivers != null">DATA_RECEIVERS = #{dataReceivers}::JSONB,</if>
-      <if test="buttonConfig != null">BUTTON_CONFIG   = #{buttonConfig}::JSONB,</if>
+      <if test="data_receivers != null">DATA_RECEIVERS = #{data_receivers}::JSONB,</if>
+      <if test="button_config != null">BUTTON_CONFIG   = #{button_config}::JSONB,</if>
       UPDATED_DATE = NOW()
     </set>
     WHERE ID = #{id}
@@ -150,9 +150,9 @@
     LEFT JOIN SCREEN_EMBEDDING     LE  ON SSP.LEFT_EMBEDDING_ID  = LE.ID
     LEFT JOIN SCREEN_EMBEDDING     RE  ON SSP.RIGHT_EMBEDDING_ID = RE.ID
     LEFT JOIN SCREEN_DATA_TRANSFER SDT ON SSP.DATA_TRANSFER_ID   = SDT.ID
-    WHERE SSP.SCREEN_ID = #{screenId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (SSP.COMPANY_CODE = #{companyCode} OR SSP.COMPANY_CODE = '*')
+    WHERE SSP.SCREEN_ID = #{screen_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND (SSP.COMPANY_CODE = #{company_code} OR SSP.COMPANY_CODE = '*')
       AND SSP.COMPANY_CODE != '*'
     </if>
   </select>
@@ -162,8 +162,8 @@
     SELECT *
     FROM SCREEN_SPLIT_PANEL
     WHERE ID = #{id}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       AND COMPANY_CODE != '*'
     </if>
   </select>
@@ -174,18 +174,18 @@
       SCREEN_ID, LEFT_EMBEDDING_ID, RIGHT_EMBEDDING_ID, DATA_TRANSFER_ID,
       LAYOUT_CONFIG, COMPANY_CODE, CREATED_DATE, UPDATED_DATE
     ) VALUES (
-      #{screenId}, #{leftEmbeddingId}, #{rightEmbeddingId}, #{dataTransferId},
-      #{layoutConfig}::JSONB, #{companyCode}, NOW(), NOW()
+      #{screen_id}, #{left_embedding_id}, #{right_embedding_id}, #{data_transfer_id},
+      #{layout_config}::JSONB, #{company_code}, NOW(), NOW()
     )
   </insert>
 
   <update id="updateScreenSplitPanel" parameterType="map">
     UPDATE SCREEN_SPLIT_PANEL
-    SET LAYOUT_CONFIG = #{layoutConfig}::JSONB,
+    SET LAYOUT_CONFIG = #{layout_config}::JSONB,
         UPDATED_DATE    = NOW()
     WHERE ID = #{id}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       AND COMPANY_CODE != '*'
     </if>
   </update>
@@ -193,8 +193,8 @@
   <delete id="deleteScreenSplitPanel" parameterType="map">
     DELETE FROM SCREEN_SPLIT_PANEL
     WHERE ID = #{id}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       AND COMPANY_CODE != '*'
     </if>
   </delete>
diff --git a/backend-spring/src/main/resources/mapper/screenFile.xml b/backend-spring/src/main/resources/mapper/screenFile.xml
index 6b145454..d199c8af 100644
--- a/backend-spring/src/main/resources/mapper/screenFile.xml
+++ b/backend-spring/src/main/resources/mapper/screenFile.xml
@@ -23,7 +23,7 @@
             , CREATED_DATE
             , STATUS
         FROM ATTACH_FILE_INFO
-        WHERE TARGET_OBJID LIKE #{targetObjidPattern}
+        WHERE TARGET_OBJID LIKE #{target_objid_pattern}
           AND STATUS = 'ACTIVE'
         ORDER BY CREATED_DATE DESC
     </select>
@@ -48,7 +48,7 @@
             , CREATED_DATE
             , STATUS
         FROM ATTACH_FILE_INFO
-        WHERE TARGET_OBJID LIKE #{targetObjidPattern}
+        WHERE TARGET_OBJID LIKE #{target_objid_pattern}
           AND STATUS = 'ACTIVE'
         ORDER BY CREATED_DATE DESC
     </select>
diff --git a/backend-spring/src/main/resources/mapper/screenGroup.xml b/backend-spring/src/main/resources/mapper/screenGroup.xml
index 2bfd0aba..08d3db69 100644
--- a/backend-spring/src/main/resources/mapper/screenGroup.xml
+++ b/backend-spring/src/main/resources/mapper/screenGroup.xml
@@ -11,17 +11,17 @@
     SELECT COUNT(*)
     FROM SCREEN_GROUPS
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
-    <if test='excludePop != null and excludePop == "true"'>
+    <if test='exclude_pop != null and exclude_pop == "true"'>
       AND (HIERARCHY_PATH IS NULL
         OR (HIERARCHY_PATH NOT LIKE 'POP/%' AND HIERARCHY_PATH != 'POP'))
     </if>
-    <if test="searchTerm != null and searchTerm != ''">
-      AND (GROUP_NAME ILIKE '%' || #{searchTerm} || '%'
-        OR GROUP_CODE ILIKE '%' || #{searchTerm} || '%'
-        OR DESCRIPTION ILIKE '%' || #{searchTerm} || '%')
+    <if test="search_term != null and search_term != ''">
+      AND (GROUP_NAME ILIKE '%' || #{search_term} || '%'
+        OR GROUP_CODE ILIKE '%' || #{search_term} || '%'
+        OR DESCRIPTION ILIKE '%' || #{search_term} || '%')
     </if>
   </select>
 
@@ -36,17 +36,17 @@
       ) AS SCREEN_COUNT
     FROM SCREEN_GROUPS SG
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (SG.COMPANY_CODE = #{companyCode} OR SG.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (SG.COMPANY_CODE = #{company_code} OR SG.COMPANY_CODE = '*')
     </if>
-    <if test='excludePop != null and excludePop == "true"'>
+    <if test='exclude_pop != null and exclude_pop == "true"'>
       AND (SG.HIERARCHY_PATH IS NULL
         OR (SG.HIERARCHY_PATH NOT LIKE 'POP/%' AND SG.HIERARCHY_PATH != 'POP'))
     </if>
-    <if test="searchTerm != null and searchTerm != ''">
-      AND (SG.GROUP_NAME ILIKE '%' || #{searchTerm} || '%'
-        OR SG.GROUP_CODE ILIKE '%' || #{searchTerm} || '%'
-        OR SG.DESCRIPTION ILIKE '%' || #{searchTerm} || '%')
+    <if test="search_term != null and search_term != ''">
+      AND (SG.GROUP_NAME ILIKE '%' || #{search_term} || '%'
+        OR SG.GROUP_CODE ILIKE '%' || #{search_term} || '%'
+        OR SG.DESCRIPTION ILIKE '%' || #{search_term} || '%')
     </if>
     ORDER BY SG.DISPLAY_ORDER ASC, SG.CREATED_DATE DESC
     <if test="limit != null">
@@ -79,15 +79,15 @@
     SELECT *
     FROM SCREEN_GROUPS
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </select>
 
   <select id="selectParentGroupById" parameterType="map" resultType="map">
     SELECT ID, GROUP_LEVEL, HIERARCHY_PATH
     FROM SCREEN_GROUPS
-    WHERE ID = #{parentGroupId}
+    WHERE ID = #{parent_group_id}
   </select>
 
   <insert id="insertScreenGroup" parameterType="map" useGeneratedKeys="true" keyProperty="id" keyColumn="id">
@@ -95,52 +95,52 @@
       GROUP_NAME, GROUP_CODE, MAIN_TABLE_NAME, DESCRIPTION, ICON,
       DISPLAY_ORDER, IS_ACTIVE, COMPANY_CODE, WRITER, PARENT_GROUP_ID, GROUP_LEVEL
     ) VALUES (
-      #{groupName}, #{groupCode}, #{mainTableName}, #{description}, #{icon},
-      #{displayOrder}, #{isActive}, #{companyCode}, #{userId}, #{parentGroupId}, #{groupLevel}
+      #{group_name}, #{group_code}, #{main_table_name}, #{description}, #{icon},
+      #{display_order}, #{is_active}, #{company_code}, #{user_id}, #{parent_group_id}, #{group_level}
     )
   </insert>
 
   <update id="updateScreenGroupHierarchyPath" parameterType="map">
     UPDATE SCREEN_GROUPS
-    SET HIERARCHY_PATH = #{hierarchyPath}
+    SET HIERARCHY_PATH = #{hierarchy_path}
     WHERE ID = #{id}
   </update>
 
   <!-- 회사 코드 변경 없이 수정 -->
   <update id="updateScreenGroup" parameterType="map">
     UPDATE SCREEN_GROUPS
-    SET GROUP_NAME      = #{groupName},
-        GROUP_CODE      = #{groupCode},
-        MAIN_TABLE_NAME = #{mainTableName},
+    SET GROUP_NAME      = #{group_name},
+        GROUP_CODE      = #{group_code},
+        MAIN_TABLE_NAME = #{main_table_name},
         DESCRIPTION     = #{description},
         ICON            = #{icon},
-        DISPLAY_ORDER   = #{displayOrder},
-        IS_ACTIVE       = #{isActive},
+        DISPLAY_ORDER   = #{display_order},
+        IS_ACTIVE       = #{is_active},
         UPDATED_DATE    = NOW(),
-        PARENT_GROUP_ID = #{parentGroupId},
-        GROUP_LEVEL     = #{groupLevel},
-        HIERARCHY_PATH  = #{hierarchyPath}
+        PARENT_GROUP_ID = #{parent_group_id},
+        GROUP_LEVEL     = #{group_level},
+        HIERARCHY_PATH  = #{hierarchy_path}
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </update>
 
   <!-- 회사 코드 포함 수정 (최고관리자) -->
   <update id="updateScreenGroupWithCompany" parameterType="map">
     UPDATE SCREEN_GROUPS
-    SET GROUP_NAME      = #{groupName},
-        GROUP_CODE      = #{groupCode},
-        MAIN_TABLE_NAME = #{mainTableName},
+    SET GROUP_NAME      = #{group_name},
+        GROUP_CODE      = #{group_code},
+        MAIN_TABLE_NAME = #{main_table_name},
         DESCRIPTION     = #{description},
         ICON            = #{icon},
-        DISPLAY_ORDER   = #{displayOrder},
-        IS_ACTIVE       = #{isActive},
+        DISPLAY_ORDER   = #{display_order},
+        IS_ACTIVE       = #{is_active},
         UPDATED_DATE    = NOW(),
-        PARENT_GROUP_ID = #{parentGroupId},
-        GROUP_LEVEL     = #{groupLevel},
-        HIERARCHY_PATH  = #{hierarchyPath},
-        (COMPANY_CODE    = #{targetCompanyCode} OR COMPANY_CODE = '*')
+        PARENT_GROUP_ID = #{parent_group_id},
+        GROUP_LEVEL     = #{group_level},
+        HIERARCHY_PATH  = #{hierarchy_path},
+        (COMPANY_CODE    = #{target_company_code} OR COMPANY_CODE = '*')
     WHERE ID = #{id}
   </update>
 
@@ -156,7 +156,7 @@
       SELECT ID, COMPANY_CODE
       FROM SCREEN_GROUPS
       WHERE ID = #{id}
-        AND (COMPANY_CODE = #{targetCompanyCode} OR COMPANY_CODE = '*')
+        AND (COMPANY_CODE = #{target_company_code} OR COMPANY_CODE = '*')
 
       UNION ALL
 
@@ -175,7 +175,7 @@
       #{gid}
     </foreach>
     )
-    AND (COMPANY_CODE = #{targetCompanyCode} OR COMPANY_CODE = '*')
+    AND (COMPANY_CODE = #{target_company_code} OR COMPANY_CODE = '*')
   </select>
 
   <delete id="deleteScreenMenuAssignmentsByMenuObjids" parameterType="map">
@@ -185,7 +185,7 @@
       #{objid}
     </foreach>
     )
-    AND (COMPANY_CODE = #{targetCompanyCode} OR COMPANY_CODE = '*')
+    AND (COMPANY_CODE = #{target_company_code} OR COMPANY_CODE = '*')
   </delete>
 
   <delete id="deleteMenusByGroupIds" parameterType="map">
@@ -195,7 +195,7 @@
       #{gid}
     </foreach>
     )
-    AND (COMPANY_CODE = #{targetCompanyCode} OR COMPANY_CODE = '*')
+    AND (COMPANY_CODE = #{target_company_code} OR COMPANY_CODE = '*')
   </delete>
 
   <select id="isRootGroupById" parameterType="map" resultType="int">
@@ -210,19 +210,19 @@
     WHERE RULE_ID IN (
       SELECT RULE_ID
       FROM NUMBERING_RULES
-      WHERE (COMPANY_CODE = #{targetCompanyCode} OR COMPANY_CODE = '*')
+      WHERE (COMPANY_CODE = #{target_company_code} OR COMPANY_CODE = '*')
     )
   </delete>
 
   <delete id="deleteNumberingRules" parameterType="map">
     DELETE FROM NUMBERING_RULES
-    WHERE (COMPANY_CODE = #{targetCompanyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{target_company_code} OR COMPANY_CODE = '*')
   </delete>
 
   <delete id="deleteScreenGroupById" parameterType="map">
     DELETE FROM SCREEN_GROUPS
     WHERE ID = #{id}
-      AND (COMPANY_CODE = #{targetCompanyCode} OR COMPANY_CODE = '*')
+      AND (COMPANY_CODE = #{target_company_code} OR COMPANY_CODE = '*')
   </delete>
 
   <!-- ══════════════════════════════════════════════════════════════
@@ -233,28 +233,28 @@
     INSERT INTO SCREEN_GROUP_SCREENS (
       GROUP_ID, SCREEN_ID, SCREEN_ROLE, DISPLAY_ORDER, IS_DEFAULT, COMPANY_CODE, WRITER
     ) VALUES (
-      #{groupId}, #{screenId}, #{screenRole}, #{displayOrder}, #{isDefault},
-      #{companyCode}, #{userId}
+      #{group_id}, #{screen_id}, #{screen_role}, #{display_order}, #{is_default},
+      #{company_code}, #{user_id}
     )
   </insert>
 
   <update id="updateGroupScreen" parameterType="map">
     UPDATE SCREEN_GROUP_SCREENS
-    SET SCREEN_ROLE   = #{screenRole},
-        DISPLAY_ORDER = #{displayOrder},
-        IS_DEFAULT    = #{isDefault},
+    SET SCREEN_ROLE   = #{screen_role},
+        DISPLAY_ORDER = #{display_order},
+        IS_DEFAULT    = #{is_default},
         UPDATED_DATE  = NOW()
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </update>
 
   <delete id="deleteGroupScreen" parameterType="map">
     DELETE FROM SCREEN_GROUP_SCREENS
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
@@ -270,11 +270,11 @@
     LEFT JOIN TABLE_LABELS TL1 ON SFJ.SAVE_TABLE = TL1.TABLE_NAME
     LEFT JOIN TABLE_LABELS TL2 ON SFJ.JOIN_TABLE  = TL2.TABLE_NAME
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (SFJ.COMPANY_CODE = #{companyCode} OR SFJ.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (SFJ.COMPANY_CODE = #{company_code} OR SFJ.COMPANY_CODE = '*')
     </if>
-    <if test="screenId != null">
-      AND SFJ.SCREEN_ID = #{screenId}
+    <if test="screen_id != null">
+      AND SFJ.SCREEN_ID = #{screen_id}
     </if>
     ORDER BY SFJ.ID ASC
   </select>
@@ -286,40 +286,40 @@
       JOIN_TYPE, FILTER_CONDITION, SORT_COLUMN, SORT_DIRECTION,
       IS_ACTIVE, COMPANY_CODE, WRITER
     ) VALUES (
-      #{screenId}, #{layoutId}, #{componentId}, #{fieldName},
-      #{saveTable}, #{saveColumn}, #{joinTable}, #{joinColumn}, #{displayColumn},
-      #{joinType}, #{filterCondition}, #{sortColumn}, #{sortDirection},
-      #{isActive}, #{companyCode}, #{userId}
+      #{screen_id}, #{layout_id}, #{component_id}, #{field_name},
+      #{save_table}, #{save_column}, #{join_table}, #{join_column}, #{display_column},
+      #{join_type}, #{filter_condition}, #{sort_column}, #{sort_direction},
+      #{is_active}, #{company_code}, #{user_id}
     )
   </insert>
 
   <update id="updateFieldJoin" parameterType="map">
     UPDATE SCREEN_FIELD_JOINS
-    SET LAYOUT_ID        = #{layoutId},
-        COMPONENT_ID     = #{componentId},
-        FIELD_NAME       = #{fieldName},
-        SAVE_TABLE       = #{saveTable},
-        SAVE_COLUMN      = #{saveColumn},
-        JOIN_TABLE       = #{joinTable},
-        JOIN_COLUMN      = #{joinColumn},
-        DISPLAY_COLUMN   = #{displayColumn},
-        JOIN_TYPE        = #{joinType},
-        FILTER_CONDITION = #{filterCondition},
-        SORT_COLUMN      = #{sortColumn},
-        SORT_DIRECTION   = #{sortDirection},
-        IS_ACTIVE        = #{isActive},
+    SET LAYOUT_ID        = #{layout_id},
+        COMPONENT_ID     = #{component_id},
+        FIELD_NAME       = #{field_name},
+        SAVE_TABLE       = #{save_table},
+        SAVE_COLUMN      = #{save_column},
+        JOIN_TABLE       = #{join_table},
+        JOIN_COLUMN      = #{join_column},
+        DISPLAY_COLUMN   = #{display_column},
+        JOIN_TYPE        = #{join_type},
+        FILTER_CONDITION = #{filter_condition},
+        SORT_COLUMN      = #{sort_column},
+        SORT_DIRECTION   = #{sort_direction},
+        IS_ACTIVE        = #{is_active},
         UPDATED_DATE     = NOW()
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </update>
 
   <delete id="deleteFieldJoin" parameterType="map">
     DELETE FROM SCREEN_FIELD_JOINS
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
@@ -337,14 +337,14 @@
     LEFT JOIN SCREEN_DEFINITIONS SD2 ON SDF.TARGET_SCREEN_ID = SD2.SCREEN_ID
     LEFT JOIN SCREEN_GROUPS      SG  ON SDF.GROUP_ID = SG.ID
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (SDF.COMPANY_CODE = #{companyCode} OR SDF.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (SDF.COMPANY_CODE = #{company_code} OR SDF.COMPANY_CODE = '*')
     </if>
-    <if test="groupId != null">
-      AND SDF.GROUP_ID = #{groupId}
+    <if test="group_id != null">
+      AND SDF.GROUP_ID = #{group_id}
     </if>
-    <if test="sourceScreenId != null">
-      AND SDF.SOURCE_SCREEN_ID = #{sourceScreenId}
+    <if test="source_screen_id != null">
+      AND SDF.SOURCE_SCREEN_ID = #{source_screen_id}
     </if>
     ORDER BY SDF.ID ASC
   </select>
@@ -355,36 +355,36 @@
       DATA_MAPPING, FLOW_TYPE, FLOW_LABEL, CONDITION_EXPRESSION, IS_ACTIVE,
       COMPANY_CODE, WRITER
     ) VALUES (
-      #{groupId}, #{sourceScreenId}, #{sourceAction}, #{targetScreenId}, #{targetAction},
-      #{dataMapping}::JSONB, #{flowType}, #{flowLabel}, #{conditionExpression}, #{isActive},
-      #{companyCode}, #{userId}
+      #{group_id}, #{source_screen_id}, #{source_action}, #{target_screen_id}, #{target_action},
+      #{data_mapping}::JSONB, #{flow_type}, #{flow_label}, #{condition_expression}, #{is_active},
+      #{company_code}, #{user_id}
     )
   </insert>
 
   <update id="updateDataFlow" parameterType="map">
     UPDATE SCREEN_DATA_FLOWS
-    SET GROUP_ID             = #{groupId},
-        SOURCE_SCREEN_ID     = #{sourceScreenId},
-        SOURCE_ACTION        = #{sourceAction},
-        TARGET_SCREEN_ID     = #{targetScreenId},
-        TARGET_ACTION        = #{targetAction},
-        DATA_MAPPING         = #{dataMapping}::JSONB,
-        FLOW_TYPE            = #{flowType},
-        FLOW_LABEL           = #{flowLabel},
-        CONDITION_EXPRESSION = #{conditionExpression},
-        IS_ACTIVE            = #{isActive},
+    SET GROUP_ID             = #{group_id},
+        SOURCE_SCREEN_ID     = #{source_screen_id},
+        SOURCE_ACTION        = #{source_action},
+        TARGET_SCREEN_ID     = #{target_screen_id},
+        TARGET_ACTION        = #{target_action},
+        DATA_MAPPING         = #{data_mapping}::JSONB,
+        FLOW_TYPE            = #{flow_type},
+        FLOW_LABEL           = #{flow_label},
+        CONDITION_EXPRESSION = #{condition_expression},
+        IS_ACTIVE            = #{is_active},
         UPDATED_DATE         = NOW()
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </update>
 
   <delete id="deleteDataFlow" parameterType="map">
     DELETE FROM SCREEN_DATA_FLOWS
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
@@ -402,14 +402,14 @@
     LEFT JOIN SCREEN_GROUPS      SG ON STR.GROUP_ID  = SG.ID
     LEFT JOIN TABLE_LABELS       TL ON STR.TABLE_NAME = TL.TABLE_NAME
     WHERE 1=1
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (STR.COMPANY_CODE = #{companyCode} OR STR.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (STR.COMPANY_CODE = #{company_code} OR STR.COMPANY_CODE = '*')
     </if>
-    <if test="screenId != null">
-      AND STR.SCREEN_ID = #{screenId}
+    <if test="screen_id != null">
+      AND STR.SCREEN_ID = #{screen_id}
     </if>
-    <if test="groupId != null">
-      AND STR.GROUP_ID = #{groupId}
+    <if test="group_id != null">
+      AND STR.GROUP_ID = #{group_id}
     </if>
     ORDER BY STR.ID ASC
   </select>
@@ -419,31 +419,31 @@
       GROUP_ID, SCREEN_ID, TABLE_NAME, RELATION_TYPE, CRUD_OPERATIONS,
       DESCRIPTION, IS_ACTIVE, COMPANY_CODE, WRITER
     ) VALUES (
-      #{groupId}, #{screenId}, #{tableName}, #{relationType}, #{crudOperations},
-      #{description}, #{isActive}, #{companyCode}, #{userId}
+      #{group_id}, #{screen_id}, #{table_name}, #{relation_type}, #{crud_operations},
+      #{description}, #{is_active}, #{company_code}, #{user_id}
     )
   </insert>
 
   <update id="updateTableRelation" parameterType="map">
     UPDATE SCREEN_TABLE_RELATIONS
-    SET GROUP_ID        = #{groupId},
-        TABLE_NAME      = #{tableName},
-        RELATION_TYPE   = #{relationType},
-        CRUD_OPERATIONS = #{crudOperations},
+    SET GROUP_ID        = #{group_id},
+        TABLE_NAME      = #{table_name},
+        RELATION_TYPE   = #{relation_type},
+        CRUD_OPERATIONS = #{crud_operations},
         DESCRIPTION     = #{description},
-        IS_ACTIVE       = #{isActive},
+        IS_ACTIVE       = #{is_active},
         UPDATED_DATE    = NOW()
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </update>
 
   <delete id="deleteTableRelation" parameterType="map">
     DELETE FROM SCREEN_TABLE_RELATIONS
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
@@ -458,7 +458,7 @@
       PROPERTIES->>'fieldName'    AS FIELD_NAME,
       PROPERTIES->>'tableName'    AS TABLE_NAME
     FROM SCREEN_LAYOUTS
-    WHERE SCREEN_ID      = #{screenId}
+    WHERE SCREEN_ID      = #{screen_id}
       AND COMPONENT_TYPE = 'component'
     ORDER BY DISPLAY_ORDER ASC
   </select>
@@ -766,13 +766,13 @@
       ) AS SCREEN_COUNT
     FROM SCREEN_GROUPS SG
     WHERE (SG.HIERARCHY_PATH LIKE 'POP/%' OR SG.HIERARCHY_PATH = 'POP')
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (SG.COMPANY_CODE = #{companyCode} OR SG.COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (SG.COMPANY_CODE = #{company_code} OR SG.COMPANY_CODE = '*')
     </if>
-    <if test="searchTerm != null and searchTerm != ''">
-      AND (SG.GROUP_NAME ILIKE '%' || #{searchTerm} || '%'
-        OR SG.GROUP_CODE ILIKE '%' || #{searchTerm} || '%'
-        OR SG.DESCRIPTION ILIKE '%' || #{searchTerm} || '%')
+    <if test="search_term != null and search_term != ''">
+      AND (SG.GROUP_NAME ILIKE '%' || #{search_term} || '%'
+        OR SG.GROUP_CODE ILIKE '%' || #{search_term} || '%'
+        OR SG.DESCRIPTION ILIKE '%' || #{search_term} || '%')
     </if>
     ORDER BY SG.DISPLAY_ORDER ASC, SG.HIERARCHY_PATH ASC
   </select>
@@ -802,34 +802,34 @@
       GROUP_NAME, GROUP_CODE, DESCRIPTION, ICON, DISPLAY_ORDER,
       PARENT_GROUP_ID, HIERARCHY_PATH, COMPANY_CODE, WRITER, IS_ACTIVE
     ) VALUES (
-      #{groupName}, #{groupCode}, #{description}, #{icon}, #{displayOrder},
-      #{parentGroupId}, #{hierarchyPath}, #{companyCode}, #{userId}, 'Y'
+      #{group_name}, #{group_code}, #{description}, #{icon}, #{display_order},
+      #{parent_group_id}, #{hierarchy_path}, #{company_code}, #{user_id}, 'Y'
     )
   </insert>
 
   <select id="countGroupByCode" parameterType="map" resultType="int">
     SELECT COUNT(*)
     FROM SCREEN_GROUPS
-    WHERE GROUP_CODE = #{groupCode}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE GROUP_CODE = #{group_code}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <select id="selectScreenGroupForUpdate" parameterType="map" resultType="map">
     SELECT *
     FROM SCREEN_GROUPS
     WHERE ID = #{id}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </select>
 
   <update id="updatePopScreenGroup" parameterType="map">
     UPDATE SCREEN_GROUPS
-    SET GROUP_NAME    = COALESCE(#{groupName},    GROUP_NAME),
+    SET GROUP_NAME    = COALESCE(#{group_name},    GROUP_NAME),
         DESCRIPTION   = COALESCE(#{description},  DESCRIPTION),
         ICON          = COALESCE(#{icon},          ICON),
-        DISPLAY_ORDER = COALESCE(#{displayOrder},  DISPLAY_ORDER),
-        IS_ACTIVE     = COALESCE(#{isActive},      IS_ACTIVE),
+        DISPLAY_ORDER = COALESCE(#{display_order},  DISPLAY_ORDER),
+        IS_ACTIVE     = COALESCE(#{is_active},      IS_ACTIVE),
         UPDATED_DATE  = NOW()
     WHERE ID = #{id}
   </update>
@@ -856,7 +856,7 @@
     SELECT *
     FROM SCREEN_GROUPS
     WHERE HIERARCHY_PATH = 'POP'
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <insert id="insertPopRootGroup" parameterType="map" useGeneratedKeys="true" keyProperty="id" keyColumn="id">
@@ -864,8 +864,8 @@
       GROUP_NAME, GROUP_CODE, HIERARCHY_PATH, COMPANY_CODE,
       DESCRIPTION, DISPLAY_ORDER, IS_ACTIVE, WRITER
     ) VALUES (
-      'POP 화면', 'POP', 'POP', #{companyCode},
-      'POP 화면 관리 루트', 0, 'Y', #{userId}
+      'POP 화면', 'POP', 'POP', #{company_code},
+      'POP 화면 관리 루트', 0, 'Y', #{user_id}
     )
   </insert>
 
@@ -887,7 +887,7 @@
       PARENT.MENU_OBJID AS PARENT_MENU_OBJID
     FROM SCREEN_GROUPS SG
     LEFT JOIN SCREEN_GROUPS PARENT ON SG.PARENT_GROUP_ID = PARENT.ID
-    WHERE (SG.COMPANY_CODE = #{companyCode} OR SG.COMPANY_CODE = '*')
+    WHERE (SG.COMPANY_CODE = #{company_code} OR SG.COMPANY_CODE = '*')
     ORDER BY SG.GROUP_LEVEL ASC, SG.DISPLAY_ORDER ASC
   </select>
 
@@ -900,14 +900,14 @@
       P.MENU_NAME_KOR AS PARENT_NAME
     FROM MENU_INFO M
     LEFT JOIN MENU_INFO P ON M.PARENT_OBJ_ID = P.OBJID
-    WHERE (M.COMPANY_CODE = #{companyCode} OR M.COMPANY_CODE = '*')
+    WHERE (M.COMPANY_CODE = #{company_code} OR M.COMPANY_CODE = '*')
       AND M.MENU_TYPE = '1'
   </select>
 
   <select id="selectUserMenuRoot" parameterType="map" resultType="map">
     SELECT OBJID
     FROM MENU_INFO
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       AND MENU_TYPE = '1'
       AND PARENT_OBJ_ID = '0'
     ORDER BY SEQ ASC
@@ -920,7 +920,7 @@
       SEQ, MENU_TYPE, COMPANY_CODE, WRITER, CREATED_DATE, STATUS
     ) VALUES (
       #{objid}, 0, '사용자', 'User', 1, 1,
-      #{companyCode}, #{userId}, NOW(), 'active'
+      #{company_code}, #{user_id}, NOW(), 'active'
     )
   </insert>
 
@@ -928,24 +928,24 @@
     SELECT SD.SCREEN_ID, SD.SCREEN_CODE, SD.SCREEN_NAME
     FROM SCREEN_GROUP_SCREENS SGS
     JOIN SCREEN_DEFINITIONS SD ON SGS.SCREEN_ID = SD.SCREEN_ID
-    WHERE SGS.GROUP_ID = #{groupId}
-      AND (SGS.COMPANY_CODE = #{companyCode} OR SGS.COMPANY_CODE = '*')
+    WHERE SGS.GROUP_ID = #{group_id}
+      AND (SGS.COMPANY_CODE = #{company_code} OR SGS.COMPANY_CODE = '*')
     ORDER BY CASE WHEN SGS.IS_DEFAULT = 'Y' THEN 0 ELSE 1 END, SGS.DISPLAY_ORDER ASC
     LIMIT 1
   </select>
 
   <update id="updateMenuUrlAndScreenCode" parameterType="map">
     UPDATE MENU_INFO
-    SET MENU_URL    = #{menuUrl},
-        SCREEN_CODE = #{screenCode}
+    SET MENU_URL    = #{menu_url},
+        SCREEN_CODE = #{screen_code}
     WHERE OBJID = #{objid}
   </update>
 
   <select id="getNextMenuSeqUnderParent" parameterType="map" resultType="int">
     SELECT COALESCE(MAX(SEQ), 0) + 1
     FROM MENU_INFO
-    WHERE PARENT_OBJ_ID = #{parentObjid}
-      AND (COMPANY_CODE  = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE PARENT_OBJ_ID = #{parent_objid}
+      AND (COMPANY_CODE  = #{company_code} OR COMPANY_CODE = '*')
       AND MENU_TYPE     = '1'
   </select>
 
@@ -955,15 +955,15 @@
       SEQ, MENU_TYPE, COMPANY_CODE, WRITER, CREATED_DATE, STATUS,
       SCREEN_GROUP_ID, MENU_DESC, MENU_URL, SCREEN_CODE, MENU_ICON
     ) VALUES (
-      #{objid}, #{parentObjid}, #{groupName}, #{groupCode},
-      #{seq}, 1, #{companyCode}, #{userId}, NOW(), 'active',
-      #{groupId}, #{description}, #{menuUrl}, #{screenCode}, #{icon}
+      #{objid}, #{parent_objid}, #{group_name}, #{group_code},
+      #{seq}, 1, #{company_code}, #{user_id}, NOW(), 'active',
+      #{group_id}, #{description}, #{menu_url}, #{screen_code}, #{icon}
     )
   </insert>
 
   <update id="updateScreenGroupMenuObjid" parameterType="map">
     UPDATE SCREEN_GROUPS
-    SET MENU_OBJID   = #{menuObjid},
+    SET MENU_OBJID   = #{menu_objid},
         UPDATED_DATE = NOW()
     WHERE ID = #{id}
   </update>
@@ -976,7 +976,7 @@
 
   <update id="updateMenuScreenGroupId" parameterType="map">
     UPDATE MENU_INFO
-    SET SCREEN_GROUP_ID = #{groupId}
+    SET SCREEN_GROUP_ID = #{group_id}
     WHERE OBJID = #{objid}
   </update>
 
@@ -987,7 +987,7 @@
   <select id="selectCompanyName" parameterType="map" resultType="map">
     SELECT COMPANY_NAME
     FROM COMPANY_MNG
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <select id="selectMenusForSync" parameterType="map" resultType="map">
@@ -1003,7 +1003,7 @@
       PARENT.SCREEN_GROUP_ID AS PARENT_SCREEN_GROUP_ID
     FROM MENU_INFO M
     LEFT JOIN MENU_INFO PARENT ON M.PARENT_OBJ_ID = PARENT.OBJID
-    WHERE (M.COMPANY_CODE = #{companyCode} OR M.COMPANY_CODE = '*')
+    WHERE (M.COMPANY_CODE = #{company_code} OR M.COMPANY_CODE = '*')
       AND M.MENU_TYPE = '1'
     ORDER BY
       CASE WHEN M.PARENT_OBJ_ID = '0' THEN 0 ELSE 1 END,
@@ -1020,13 +1020,13 @@
       P.GROUP_NAME AS PARENT_NAME
     FROM SCREEN_GROUPS G
     LEFT JOIN SCREEN_GROUPS P ON G.PARENT_GROUP_ID = P.ID
-    WHERE (G.COMPANY_CODE = #{companyCode} OR G.COMPANY_CODE = '*')
+    WHERE (G.COMPANY_CODE = #{company_code} OR G.COMPANY_CODE = '*')
   </select>
 
   <select id="selectRootCompanyFolder" parameterType="map" resultType="map">
     SELECT ID
     FROM SCREEN_GROUPS
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       AND PARENT_GROUP_ID IS NULL
       AND GROUP_LEVEL = '0'
     ORDER BY ID ASC
@@ -1044,14 +1044,14 @@
       GROUP_NAME, GROUP_CODE, PARENT_GROUP_ID, GROUP_LEVEL,
       DISPLAY_ORDER, COMPANY_CODE, WRITER, HIERARCHY_PATH
     ) VALUES (
-      #{companyName}, #{groupCode}, NULL, 0,
-      #{displayOrder}, #{companyCode}, #{userId}, '/'
+      #{company_name}, #{group_code}, NULL, 0,
+      #{display_order}, #{company_code}, #{user_id}, '/'
     )
   </insert>
 
   <update id="updateGroupHierarchyPathById" parameterType="map">
     UPDATE SCREEN_GROUPS
-    SET HIERARCHY_PATH = #{hierarchyPath}
+    SET HIERARCHY_PATH = #{hierarchy_path}
     WHERE ID = #{id}
   </update>
 
@@ -1061,15 +1061,15 @@
       DISPLAY_ORDER, COMPANY_CODE, WRITER, HIERARCHY_PATH,
       MENU_OBJID, DESCRIPTION, IS_ACTIVE
     ) VALUES (
-      #{groupName}, #{groupCode}, #{parentGroupId}, #{groupLevel},
-      #{displayOrder}, #{companyCode}, #{userId}, #{hierarchyPath},
-      #{menuObjid}, #{description}, 'Y'
+      #{group_name}, #{group_code}, #{parent_group_id}, #{group_level},
+      #{display_order}, #{company_code}, #{user_id}, #{hierarchy_path},
+      #{menu_objid}, #{description}, 'Y'
     )
   </insert>
 
   <update id="updateScreenGroupForMenuSync" parameterType="map">
     UPDATE SCREEN_GROUPS
-    SET MENU_OBJID   = #{menuObjid},
+    SET MENU_OBJID   = #{menu_objid},
         UPDATED_DATE = NOW()
     WHERE ID = #{id}
   </update>
@@ -1084,7 +1084,7 @@
       COUNT(CASE WHEN MENU_OBJID IS NOT NULL THEN 1 END) AS LINKED_GROUPS,
       COUNT(CASE WHEN MENU_OBJID IS NULL THEN 1 END)     AS UNLINKED_GROUPS
     FROM SCREEN_GROUPS
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <select id="selectSyncStatusMenus" parameterType="map" resultType="map">
@@ -1093,7 +1093,7 @@
       COUNT(CASE WHEN SCREEN_GROUP_ID IS NOT NULL THEN 1 END) AS LINKED_MENUS,
       COUNT(CASE WHEN SCREEN_GROUP_ID IS NULL THEN 1 END)     AS UNLINKED_MENUS
     FROM MENU_INFO
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       AND MENU_TYPE = '1'
   </select>
 
diff --git a/backend-spring/src/main/resources/mapper/screenManagement.xml b/backend-spring/src/main/resources/mapper/screenManagement.xml
index 578ba001..4fce825e 100644
--- a/backend-spring/src/main/resources/mapper/screenManagement.xml
+++ b/backend-spring/src/main/resources/mapper/screenManagement.xml
@@ -8,7 +8,7 @@
   <select id="checkScreenCodeExists" parameterType="map" resultType="int">
     SELECT COUNT(*)
     FROM SCREEN_DEFINITIONS
-    WHERE SCREEN_CODE = #{screenCode}
+    WHERE SCREEN_CODE = #{screen_code}
       AND IS_ACTIVE != 'D'
   </select>
 
@@ -27,18 +27,18 @@
         , REST_API_ENDPOINT
         , REST_API_JSON_PATH
     ) VALUES (
-        #{screenName}
-        , #{screenCode}
-        , #{tableName}
-        , #{companyCode}
+        #{screen_name}
+        , #{screen_code}
+        , #{table_name}
+        , #{company_code}
         , #{description}
-        , #{createdBy}
-        , #{dbSourceType}
-        , #{dbConnectionId}
-        , #{dataSourceType}
-        , #{restApiConnectionId}
-        , #{restApiEndpoint}
-        , #{restApiJsonPath}
+        , #{created_by}
+        , #{db_source_type}
+        , #{db_connection_id}
+        , #{data_source_type}
+        , #{rest_api_connection_id}
+        , #{rest_api_endpoint}
+        , #{rest_api_json_path}
     )
     RETURNING
         SCREEN_ID
@@ -65,15 +65,15 @@
         SD.*
     FROM SCREEN_DEFINITIONS SD
     WHERE SD.IS_ACTIVE != 'D'
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND SD.COMPANY_CODE = #{companyCode}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND SD.COMPANY_CODE = #{company_code}
     </if>
-    <if test="searchTerm != null and searchTerm != ''">
-      AND (SD.SCREEN_NAME ILIKE #{searchLike}
-        OR SD.SCREEN_CODE ILIKE #{searchLike}
-        OR SD.TABLE_NAME ILIKE #{searchLike})
+    <if test="search_term != null and search_term != ''">
+      AND (SD.SCREEN_NAME ILIKE #{search_like}
+        OR SD.SCREEN_CODE ILIKE #{search_like}
+        OR SD.TABLE_NAME ILIKE #{search_like})
     </if>
-    <if test="excludePop != null and excludePop == true">
+    <if test="exclude_pop != null and exclude_pop == true">
       AND NOT EXISTS (
           SELECT 1
           FROM SCREEN_LAYOUTS_POP SLP
@@ -88,15 +88,15 @@
     SELECT COUNT(*)
     FROM SCREEN_DEFINITIONS SD
     WHERE SD.IS_ACTIVE != 'D'
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND SD.COMPANY_CODE = #{companyCode}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND SD.COMPANY_CODE = #{company_code}
     </if>
-    <if test="searchTerm != null and searchTerm != ''">
-      AND (SD.SCREEN_NAME ILIKE #{searchLike}
-        OR SD.SCREEN_CODE ILIKE #{searchLike}
-        OR SD.TABLE_NAME ILIKE #{searchLike})
+    <if test="search_term != null and search_term != ''">
+      AND (SD.SCREEN_NAME ILIKE #{search_like}
+        OR SD.SCREEN_CODE ILIKE #{search_like}
+        OR SD.TABLE_NAME ILIKE #{search_like})
     </if>
-    <if test="excludePop != null and excludePop == true">
+    <if test="exclude_pop != null and exclude_pop == true">
       AND NOT EXISTS (
           SELECT 1
           FROM SCREEN_LAYOUTS_POP SLP
@@ -130,44 +130,44 @@
         , COALESCE(TL.TABLE_LABEL, SD.TABLE_NAME) AS TABLE_LABEL
     FROM SCREEN_DEFINITIONS SD
     LEFT JOIN TABLE_LABELS TL ON SD.TABLE_NAME = TL.TABLE_NAME
-    WHERE SD.SCREEN_ID = #{screenId}
+    WHERE SD.SCREEN_ID = #{screen_id}
     LIMIT 1
   </select>
 
   <update id="updateScreen" parameterType="map">
     UPDATE SCREEN_DEFINITIONS
     SET
-        SCREEN_NAME = #{screenName}
+        SCREEN_NAME = #{screen_name}
         , DESCRIPTION = #{description}
-        , IS_ACTIVE = #{isActive}
-        , UPDATED_BY = #{updatedBy}
+        , IS_ACTIVE = #{is_active}
+        , UPDATED_BY = #{updated_by}
         , UPDATED_DATE = NOW()
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
   </update>
 
   <update id="updateScreenInfo" parameterType="map">
     UPDATE SCREEN_DEFINITIONS
     SET
-        SCREEN_NAME = #{screenName}
-        , TABLE_NAME = #{tableName}
+        SCREEN_NAME = #{screen_name}
+        , TABLE_NAME = #{table_name}
         , DESCRIPTION = #{description}
-        , IS_ACTIVE = #{isActive}
+        , IS_ACTIVE = #{is_active}
         , UPDATED_DATE = NOW()
-        , DATA_SOURCE_TYPE = #{dataSourceType}
-        , DB_SOURCE_TYPE = #{dbSourceType}
-        , DB_CONNECTION_ID = #{dbConnectionId}
-        , REST_API_CONNECTION_ID = #{restApiConnectionId}
-        , REST_API_ENDPOINT = #{restApiEndpoint}
-        , REST_API_JSON_PATH = #{restApiJsonPath}
-    WHERE SCREEN_ID = #{screenId}
+        , DATA_SOURCE_TYPE = #{data_source_type}
+        , DB_SOURCE_TYPE = #{db_source_type}
+        , DB_CONNECTION_ID = #{db_connection_id}
+        , REST_API_CONNECTION_ID = #{rest_api_connection_id}
+        , REST_API_ENDPOINT = #{rest_api_endpoint}
+        , REST_API_JSON_PATH = #{rest_api_json_path}
+    WHERE SCREEN_ID = #{screen_id}
   </update>
 
   <update id="updateScreenTableName" parameterType="map">
     UPDATE SCREEN_DEFINITIONS
     SET
-        TABLE_NAME = #{tableName}
+        TABLE_NAME = #{table_name}
         , UPDATED_DATE = NOW()
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
   </update>
 
   <update id="softDeleteScreen" parameterType="map">
@@ -175,24 +175,24 @@
     SET
         IS_ACTIVE = 'D'
         , DELETED_DATE = NOW()
-        , DELETED_BY = #{deletedBy}
-        , DELETE_REASON = #{deleteReason}
+        , DELETED_BY = #{deleted_by}
+        , DELETE_REASON = #{delete_reason}
         , UPDATED_DATE = NOW()
-        , UPDATED_BY = #{deletedBy}
-    WHERE SCREEN_ID = #{screenId}
+        , UPDATED_BY = #{deleted_by}
+    WHERE SCREEN_ID = #{screen_id}
   </update>
 
   <update id="deactivateMenuAssignmentsByScreen" parameterType="map">
     UPDATE SCREEN_MENU_ASSIGNMENTS
     SET
         IS_ACTIVE = 'N'
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
       AND IS_ACTIVE = 'Y'
   </update>
 
   <delete id="deleteScreenGroupLinks" parameterType="map">
     DELETE FROM SCREEN_GROUP_SCREENS
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
   </delete>
 
   <update id="restoreScreen" parameterType="map">
@@ -203,31 +203,31 @@
         , DELETED_BY = NULL
         , DELETE_REASON = NULL
         , UPDATED_DATE = NOW()
-        , UPDATED_BY = #{restoredBy}
-    WHERE SCREEN_ID = #{screenId}
+        , UPDATED_BY = #{restored_by}
+    WHERE SCREEN_ID = #{screen_id}
   </update>
 
   <update id="reactivateMenuAssignmentsByScreen" parameterType="map">
     UPDATE SCREEN_MENU_ASSIGNMENTS
     SET
         IS_ACTIVE = 'Y'
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
       AND IS_ACTIVE = 'N'
   </update>
 
   <delete id="permanentDeleteLayoutV1" parameterType="map">
     DELETE FROM SCREEN_LAYOUTS
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
   </delete>
 
   <delete id="permanentDeleteMenuAssignmentsByScreen" parameterType="map">
     DELETE FROM SCREEN_MENU_ASSIGNMENTS
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
   </delete>
 
   <delete id="permanentDeleteScreen" parameterType="map">
     DELETE FROM SCREEN_DEFINITIONS
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
   </delete>
 
   <select id="selectDeletedScreenList" parameterType="map" resultType="map">
@@ -253,8 +253,8 @@
     FROM SCREEN_DEFINITIONS SD
     LEFT JOIN TABLE_LABELS TL ON SD.TABLE_NAME = TL.TABLE_NAME
     WHERE SD.IS_ACTIVE = 'D'
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
     ORDER BY DELETED_DATE DESC NULLS LAST
     LIMIT #{size} OFFSET #{offset}
@@ -264,8 +264,8 @@
     SELECT COUNT(*)
     FROM SCREEN_DEFINITIONS
     WHERE IS_ACTIVE = 'D'
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </select>
 
@@ -283,23 +283,23 @@
   <select id="checkDuplicateScreenName" parameterType="map" resultType="int">
     SELECT COUNT(*)
     FROM SCREEN_DEFINITIONS
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-      AND SCREEN_NAME = #{screenName}
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+      AND SCREEN_NAME = #{screen_name}
       AND DELETED_DATE IS NULL
   </select>
 
   <select id="checkScreenCodeForRestore" parameterType="map" resultType="int">
     SELECT COUNT(*)
     FROM SCREEN_DEFINITIONS
-    WHERE SCREEN_CODE = #{screenCode}
+    WHERE SCREEN_CODE = #{screen_code}
       AND IS_ACTIVE != 'D'
-      AND SCREEN_ID != #{screenId}
+      AND SCREEN_ID != #{screen_id}
   </select>
 
   <!-- ─── Screen code generation ──────────────────────────────────── -->
 
   <select id="pgAdvisoryXactLock" parameterType="map" resultType="map">
-    SELECT PG_ADVISORY_XACT_LOCK(#{lockId})
+    SELECT PG_ADVISORY_XACT_LOCK(#{lock_id})
   </select>
 
   <select id="selectScreenCodesByPattern" parameterType="map" resultType="map">
@@ -314,7 +314,7 @@
 
   <delete id="deleteAllLayoutV1" parameterType="map">
     DELETE FROM SCREEN_LAYOUTS
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
   </delete>
 
   <insert id="insertLayoutV1Component" parameterType="map">
@@ -330,16 +330,16 @@
         , PROPERTIES
         , DISPLAY_ORDER
     ) VALUES (
-        #{screenId}
-        , #{componentType}
-        , #{componentId}
-        , #{parentId}
-        , #{positionX}
-        , #{positionY}
+        #{screen_id}
+        , #{component_type}
+        , #{component_id}
+        , #{parent_id}
+        , #{position_x}
+        , #{position_y}
         , #{width}
         , #{height}
         , #{properties}::jsonb
-        , #{displayOrder}
+        , #{display_order}
     )
   </insert>
 
@@ -347,7 +347,7 @@
     SELECT
         *
     FROM SCREEN_LAYOUTS
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
     ORDER BY DISPLAY_ORDER ASC NULLS LAST, LAYOUT_ID ASC
   </select>
 
@@ -355,8 +355,8 @@
     SELECT
         *
     FROM SCREEN_LAYOUTS_V1
-    WHERE SCREEN_ID = #{screenId}
-      AND (COMPANY_CODE = #{companyCode} OR #{companyCode} = '*')
+    WHERE SCREEN_ID = #{screen_id}
+      AND (COMPANY_CODE = #{company_code} OR #{company_code} = '*')
     ORDER BY DISPLAY_ORDER ASC NULLS LAST, LAYOUT_ID ASC
   </select>
 
@@ -369,9 +369,9 @@
         , CONDITION_CONFIG
         , COMPANY_CODE
     FROM SCREEN_LAYOUTS_V2
-    WHERE SCREEN_ID = #{screenId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-      <if test="layerId != null">AND LAYER_ID = #{layerId}</if>
+    WHERE SCREEN_ID = #{screen_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+      <if test="layer_id != null">AND LAYER_ID = #{layer_id}</if>
     ORDER BY LAYER_ID ASC
     LIMIT 1
   </select>
@@ -383,9 +383,9 @@
         , CONDITION_CONFIG
         , COMPANY_CODE
     FROM SCREEN_LAYOUTS_V2
-    WHERE SCREEN_ID = #{screenId}
-      AND COMPANY_CODE = #{companyCode}
-      <if test="layerId != null">AND LAYER_ID = #{layerId}</if>
+    WHERE SCREEN_ID = #{screen_id}
+      AND COMPANY_CODE = #{company_code}
+      <if test="layer_id != null">AND LAYER_ID = #{layer_id}</if>
     ORDER BY LAYER_ID ASC
     LIMIT 1
   </select>
@@ -400,11 +400,11 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{screenId}
-        , #{companyCode}
-        , #{layerId}
-        , #{layerName}
-        , #{layoutData}::jsonb
+        #{screen_id}
+        , #{company_code}
+        , #{layer_id}
+        , #{layer_name}
+        , #{layout_data}::jsonb
         , NOW()
         , NOW()
     )
@@ -425,12 +425,12 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{screenId}
-        , #{companyCode}
-        , #{layerId}
-        , #{layerName}
-        , #{conditionConfig}::jsonb
-        , #{layoutData}::jsonb
+        #{screen_id}
+        , #{company_code}
+        , #{layer_id}
+        , #{layer_name}
+        , #{condition_config}::jsonb
+        , #{layout_data}::jsonb
         , NOW()
         , NOW()
     )
@@ -444,9 +444,9 @@
   <update id="updateScreenMainTable" parameterType="map">
     UPDATE SCREEN_DEFINITIONS
     SET
-        TABLE_NAME = #{tableName}
+        TABLE_NAME = #{table_name}
         , UPDATED_DATE = NOW()
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
   </update>
 
   <!-- ─── Layer management ────────────────────────────────────────── -->
@@ -459,9 +459,9 @@
         , JSONB_ARRAY_LENGTH(COALESCE(LAYOUT_DATA->'components', '[]'::jsonb)) AS COMPONENT_COUNT
         , UPDATED_DATE AS UPDATED_AT
     FROM SCREEN_LAYOUTS_V2
-    WHERE SCREEN_ID = #{screenId}
-      <if test='companyCode != null and companyCode != "*"'>
-        AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE SCREEN_ID = #{screen_id}
+      <if test='company_code != null and company_code != "*"'>
+        AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       </if>
     ORDER BY LAYER_ID
   </select>
@@ -476,11 +476,11 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{screenId}
-        , #{companyCode}
+        #{screen_id}
+        , #{company_code}
         , 1
         , '기본 레이어'
-        , #{layoutData}::jsonb
+        , #{layout_data}::jsonb
         , NOW()
         , NOW()
     )
@@ -493,37 +493,37 @@
         , LAYER_NAME
         , CONDITION_CONFIG
     FROM SCREEN_LAYOUTS_V2
-    WHERE SCREEN_ID = #{screenId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-      AND LAYER_ID = #{layerId}
+    WHERE SCREEN_ID = #{screen_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+      AND LAYER_ID = #{layer_id}
     LIMIT 1
   </select>
 
   <delete id="deleteLayerById" parameterType="map">
     DELETE FROM SCREEN_LAYOUTS_V2
-    WHERE SCREEN_ID = #{screenId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-      AND LAYER_ID = #{layerId}
+    WHERE SCREEN_ID = #{screen_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+      AND LAYER_ID = #{layer_id}
   </delete>
 
   <update id="updateLayerCondition" parameterType="map">
     UPDATE SCREEN_LAYOUTS_V2
     <set>
-      CONDITION_CONFIG = #{conditionConfig}::jsonb,
+      CONDITION_CONFIG = #{condition_config}::jsonb,
       UPDATED_DATE = NOW()
-      <if test="layerName != null">, LAYER_NAME = #{layerName}</if>
+      <if test="layer_name != null">, LAYER_NAME = #{layer_name}</if>
     </set>
-    WHERE SCREEN_ID = #{screenId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-      AND LAYER_ID = #{layerId}
+    WHERE SCREEN_ID = #{screen_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+      AND LAYER_ID = #{layer_id}
   </update>
 
   <select id="selectMaxLayerId" parameterType="map" resultType="map">
     SELECT
         COALESCE(MAX(LAYER_ID), 1) AS MAX_ID
     FROM SCREEN_LAYOUTS_V2
-    WHERE SCREEN_ID = #{screenId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE SCREEN_ID = #{screen_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </select>
 
   <insert id="insertLayerForZone" parameterType="map">
@@ -535,12 +535,12 @@
         , LAYER_NAME
         , CONDITION_CONFIG
     ) VALUES (
-        #{screenId}
-        , #{companyCode}
-        , #{layoutData}::jsonb
-        , #{layerId}
-        , #{layerName}
-        , #{conditionConfig}::jsonb
+        #{screen_id}
+        , #{company_code}
+        , #{layout_data}::jsonb
+        , #{layer_id}
+        , #{layer_name}
+        , #{condition_config}::jsonb
     )
     ON CONFLICT (SCREEN_ID, COMPANY_CODE, LAYER_ID) DO UPDATE SET
         LAYOUT_DATA = EXCLUDED.LAYOUT_DATA
@@ -555,9 +555,9 @@
     SELECT
         *
     FROM SCREEN_CONDITIONAL_ZONES
-    WHERE SCREEN_ID = #{screenId}
-      <if test="companyCode != null and companyCode != &quot;*&quot;">
-        AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE SCREEN_ID = #{screen_id}
+      <if test="company_code != null and company_code != &quot;*&quot;">
+        AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       </if>
     ORDER BY ZONE_ID
   </select>
@@ -574,15 +574,15 @@
         , TRIGGER_COMPONENT_ID
         , TRIGGER_OPERATOR
     ) VALUES (
-        #{screenId}
-        , #{companyCode}
-        , #{zoneName}
+        #{screen_id}
+        , #{company_code}
+        , #{zone_name}
         , #{x}
         , #{y}
         , #{width}
         , #{height}
-        , #{triggerComponentId}
-        , #{triggerOperator}
+        , #{trigger_component_id}
+        , #{trigger_operator}
     )
     RETURNING *
   </insert>
@@ -591,22 +591,22 @@
     UPDATE SCREEN_CONDITIONAL_ZONES
     <set>
       UPDATED_DATE = NOW()
-      <if test="zoneName != null">, ZONE_NAME = #{zoneName}</if>
+      <if test="zone_name != null">, ZONE_NAME = #{zone_name}</if>
       <if test="x != null">, X = #{x}</if>
       <if test="y != null">, Y = #{y}</if>
       <if test="width != null">, WIDTH = #{width}</if>
       <if test="height != null">, HEIGHT = #{height}</if>
-      <if test="triggerComponentId != null">, TRIGGER_COMPONENT_ID = #{triggerComponentId}</if>
-      <if test="triggerOperator != null">, TRIGGER_OPERATOR = #{triggerOperator}</if>
+      <if test="trigger_component_id != null">, TRIGGER_COMPONENT_ID = #{trigger_component_id}</if>
+      <if test="trigger_operator != null">, TRIGGER_OPERATOR = #{trigger_operator}</if>
     </set>
-    WHERE ZONE_ID = #{zoneId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE ZONE_ID = #{zone_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <delete id="deleteZoneById" parameterType="map">
     DELETE FROM SCREEN_CONDITIONAL_ZONES
-    WHERE ZONE_ID = #{zoneId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE ZONE_ID = #{zone_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </delete>
 
   <update id="clearZoneConditionConfigs" parameterType="map">
@@ -614,16 +614,16 @@
     SET
         CONDITION_CONFIG = NULL
         , UPDATED_DATE = NOW()
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-      AND CONDITION_CONFIG->>'zone_id' = #{zoneIdStr}
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+      AND CONDITION_CONFIG->>'zone_id' = #{zone_id_str}
   </update>
 
   <select id="selectZoneById" parameterType="map" resultType="map">
     SELECT
         *
     FROM SCREEN_CONDITIONAL_ZONES
-    WHERE ZONE_ID = #{zoneId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE ZONE_ID = #{zone_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     LIMIT 1
   </select>
 
@@ -633,8 +633,8 @@
     SELECT
         LAYOUT_DATA
     FROM SCREEN_LAYOUTS_POP
-    WHERE SCREEN_ID = #{screenId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE SCREEN_ID = #{screen_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     LIMIT 1
   </select>
 
@@ -648,13 +648,13 @@
         , CREATED_BY
         , UPDATED_BY
     ) VALUES (
-        #{screenId}
-        , #{companyCode}
-        , #{layoutData}::jsonb
+        #{screen_id}
+        , #{company_code}
+        , #{layout_data}::jsonb
         , NOW()
         , NOW()
-        , #{userId}
-        , #{userId}
+        , #{user_id}
+        , #{user_id}
     )
     ON CONFLICT (SCREEN_ID, COMPANY_CODE) DO UPDATE SET
         LAYOUT_DATA = EXCLUDED.LAYOUT_DATA
@@ -664,16 +664,16 @@
 
   <delete id="deleteLayoutPopByScreen" parameterType="map">
     DELETE FROM SCREEN_LAYOUTS_POP
-    WHERE SCREEN_ID = #{screenId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE SCREEN_ID = #{screen_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </delete>
 
   <select id="selectScreenIdsWithPopLayout" parameterType="map" resultType="map">
     SELECT DISTINCT
         SCREEN_ID
     FROM SCREEN_LAYOUTS_POP
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </select>
 
@@ -683,9 +683,9 @@
     SELECT
         ASSIGNMENT_ID
     FROM SCREEN_MENU_ASSIGNMENTS
-    WHERE SCREEN_ID = #{screenId}
-      AND MENU_OBJID = #{menuObjid}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE SCREEN_ID = #{screen_id}
+      AND MENU_OBJID = #{menu_objid}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     LIMIT 1
   </select>
 
@@ -697,11 +697,11 @@
         , DISPLAY_ORDER
         , CREATED_BY
     ) VALUES (
-        #{screenId}
-        , #{menuObjid}
-        , #{companyCode}
-        , #{displayOrder}
-        , #{createdBy}
+        #{screen_id}
+        , #{menu_objid}
+        , #{company_code}
+        , #{display_order}
+        , #{created_by}
     )
   </insert>
 
@@ -709,7 +709,7 @@
     SELECT
         SCREEN_CODE
     FROM SCREEN_DEFINITIONS
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
     LIMIT 1
   </select>
 
@@ -717,23 +717,23 @@
     SELECT
         MENU_TYPE
     FROM MENU_INFO
-    WHERE OBJID = #{menuObjid}
+    WHERE OBJID = #{menu_objid}
     LIMIT 1
   </select>
 
   <update id="updateMenuInfoAssign" parameterType="map">
     UPDATE MENU_INFO
     SET
-        MENU_URL = #{menuUrl}
-        , SCREEN_CODE = #{screenCode}
-    WHERE OBJID = #{menuObjid}
+        MENU_URL = #{menu_url}
+        , SCREEN_CODE = #{screen_code}
+    WHERE OBJID = #{menu_objid}
   </update>
 
   <delete id="deleteMenuAssignment" parameterType="map">
     DELETE FROM SCREEN_MENU_ASSIGNMENTS
-    WHERE SCREEN_ID = #{screenId}
-      AND MENU_OBJID = #{menuObjid}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE SCREEN_ID = #{screen_id}
+      AND MENU_OBJID = #{menu_objid}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </delete>
 
   <update id="updateMenuInfoUnassign" parameterType="map">
@@ -741,7 +741,7 @@
     SET
         MENU_URL = NULL
         , SCREEN_CODE = NULL
-    WHERE OBJID = #{menuObjid}
+    WHERE OBJID = #{menu_objid}
   </update>
 
   <select id="selectScreensByMenu" parameterType="map" resultType="map">
@@ -749,10 +749,10 @@
         SD.*
     FROM SCREEN_MENU_ASSIGNMENTS SMA
     INNER JOIN SCREEN_DEFINITIONS SD ON SMA.SCREEN_ID = SD.SCREEN_ID
-    WHERE SMA.MENU_OBJID = #{menuObjid}
-      AND (SMA.COMPANY_CODE = #{companyCode} OR SMA.COMPANY_CODE = '*')
+    WHERE SMA.MENU_OBJID = #{menu_objid}
+      AND (SMA.COMPANY_CODE = #{company_code} OR SMA.COMPANY_CODE = '*')
       AND SMA.IS_ACTIVE = 'Y'
-    ORDER BY CASE WHEN SMA.COMPANY_CODE = #{companyCode} THEN 0 ELSE 1 END
+    ORDER BY CASE WHEN SMA.COMPANY_CODE = #{company_code} THEN 0 ELSE 1 END
         , SMA.DISPLAY_ORDER ASC
   </select>
 
@@ -762,8 +762,8 @@
         , MI.MENU_NAME_KOR
     FROM SCREEN_MENU_ASSIGNMENTS SMA
     LEFT JOIN MENU_INFO MI ON SMA.MENU_OBJID = MI.OBJID
-    WHERE SMA.SCREEN_ID = #{screenId}
-      AND (SMA.COMPANY_CODE = #{companyCode} OR SMA.COMPANY_CODE = '*')
+    WHERE SMA.SCREEN_ID = #{screen_id}
+      AND (SMA.COMPANY_CODE = #{company_code} OR SMA.COMPANY_CODE = '*')
       AND SMA.IS_ACTIVE = 'Y'
     ORDER BY SMA.CREATED_DATE ASC
     LIMIT 1
@@ -797,8 +797,8 @@
     LEFT JOIN SCREEN_LAYOUTS SL ON SD.SCREEN_ID = SL.SCREEN_ID
         AND SL.COMPONENT_TYPE = 'component'
     WHERE SD.IS_ACTIVE != 'D'
-      <if test="companyCode != null and companyCode != &quot;*&quot;">
-        AND SD.COMPANY_CODE IN (#{companyCode}, '*')
+      <if test="company_code != null and company_code != &quot;*&quot;">
+        AND SD.COMPANY_CODE IN (#{company_code}, '*')
       </if>
   </select>
 
@@ -809,7 +809,7 @@
         , MI.MENU_NAME_KOR
     FROM SCREEN_MENU_ASSIGNMENTS SMA
     LEFT JOIN MENU_INFO MI ON SMA.MENU_OBJID = MI.OBJID
-    WHERE SMA.SCREEN_ID = #{screenId}
+    WHERE SMA.SCREEN_ID = #{screen_id}
       AND SMA.IS_ACTIVE = 'Y'
   </select>
 
@@ -818,7 +818,7 @@
         LAYOUT_ID
         , PROPERTIES
     FROM SCREEN_LAYOUTS
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
       AND COMPONENT_TYPE = 'component'
       AND PROPERTIES IS NOT NULL
   </select>
@@ -843,7 +843,7 @@
     SELECT
         *
     FROM SCREEN_DEFINITIONS
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
     LIMIT 1
   </select>
 
@@ -862,18 +862,18 @@
         , REST_API_ENDPOINT
         , REST_API_JSON_PATH
     ) VALUES (
-        #{screenName}
-        , #{screenCode}
-        , #{tableName}
-        , #{companyCode}
+        #{screen_name}
+        , #{screen_code}
+        , #{table_name}
+        , #{company_code}
         , #{description}
-        , #{createdBy}
-        , #{dbSourceType}
-        , #{dbConnectionId}
-        , #{dataSourceType}
-        , #{restApiConnectionId}
-        , #{restApiEndpoint}
-        , #{restApiJsonPath}
+        , #{created_by}
+        , #{db_source_type}
+        , #{db_connection_id}
+        , #{data_source_type}
+        , #{rest_api_connection_id}
+        , #{rest_api_endpoint}
+        , #{rest_api_json_path}
     )
     RETURNING
         SCREEN_ID
@@ -897,7 +897,7 @@
     SELECT
         *
     FROM SCREEN_LAYOUTS
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
     ORDER BY DISPLAY_ORDER ASC NULLS LAST, LAYOUT_ID ASC
   </select>
 
@@ -914,16 +914,16 @@
         , PROPERTIES
         , DISPLAY_ORDER
     ) VALUES (
-        #{screenId}
-        , #{componentType}
-        , #{componentId}
-        , #{parentId}
-        , #{positionX}
-        , #{positionY}
+        #{screen_id}
+        , #{component_type}
+        , #{component_id}
+        , #{parent_id}
+        , #{position_x}
+        , #{position_y}
         , #{width}
         , #{height}
         , #{properties}::jsonb
-        , #{displayOrder}
+        , #{display_order}
     )
   </insert>
 
@@ -936,7 +936,7 @@
         , CONDITION_CONFIG
         , LAYOUT_DATA
     FROM SCREEN_LAYOUTS_V2
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
   </select>
 
   <insert id="insertLayoutV2Copy" parameterType="map">
@@ -950,12 +950,12 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{screenId}
-        , #{companyCode}
-        , #{layerId}
-        , #{layerName}
-        , #{conditionConfig}::jsonb
-        , #{layoutData}::jsonb
+        #{screen_id}
+        , #{company_code}
+        , #{layer_id}
+        , #{layer_name}
+        , #{condition_config}::jsonb
+        , #{layout_data}::jsonb
         , NOW()
         , NOW()
     )
@@ -971,7 +971,7 @@
         LAYOUT_ID
         , PROPERTIES
     FROM SCREEN_LAYOUTS
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
       AND COMPONENT_TYPE = 'component'
       AND PROPERTIES IS NOT NULL
   </select>
@@ -980,7 +980,7 @@
     UPDATE SCREEN_LAYOUTS
     SET
         PROPERTIES = #{properties}::jsonb
-    WHERE LAYOUT_ID = #{layoutId}
+    WHERE LAYOUT_ID = #{layout_id}
   </update>
 
   <select id="selectLayoutsV2ForScreen" parameterType="map" resultType="map">
@@ -990,18 +990,18 @@
         , COMPANY_CODE
         , LAYOUT_DATA
     FROM SCREEN_LAYOUTS_V2
-    WHERE SCREEN_ID = #{screenId}
+    WHERE SCREEN_ID = #{screen_id}
       AND LAYOUT_DATA IS NOT NULL
   </select>
 
   <update id="updateLayoutV2Data" parameterType="map">
     UPDATE SCREEN_LAYOUTS_V2
     SET
-        LAYOUT_DATA = #{layoutData}::jsonb
+        LAYOUT_DATA = #{layout_data}::jsonb
         , UPDATED_DATE = NOW()
-    WHERE SCREEN_ID = #{screenId}
-      AND LAYER_ID = #{layerId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE SCREEN_ID = #{screen_id}
+      AND LAYER_ID = #{layer_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </update>
 
   <!-- ─── Flow cleanup on screen delete ───────────────────────────── -->
@@ -1010,9 +1010,9 @@
     SELECT
         LAYOUT_DATA
     FROM SCREEN_LAYOUTS_V2
-    WHERE SCREEN_ID = #{screenId}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
-    ORDER BY CASE WHEN COMPANY_CODE = #{companyCode} THEN 0 ELSE 1 END
+    WHERE SCREEN_ID = #{screen_id}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
+    ORDER BY CASE WHEN COMPANY_CODE = #{company_code} THEN 0 ELSE 1 END
     LIMIT 1
   </select>
 
@@ -1020,40 +1020,40 @@
     SELECT COUNT(*)
     FROM SCREEN_LAYOUTS_V2 SLV
     JOIN SCREEN_DEFINITIONS SD ON SLV.SCREEN_ID = SD.SCREEN_ID
-    WHERE SLV.SCREEN_ID != #{screenId}
+    WHERE SLV.SCREEN_ID != #{screen_id}
       AND SD.IS_ACTIVE != 'D'
-      <if test="companyCode != null and companyCode != &quot;*&quot;">
-        AND (SD.COMPANY_CODE = #{companyCode} OR SD.COMPANY_CODE = '*')
+      <if test="company_code != null and company_code != &quot;*&quot;">
+        AND (SD.COMPANY_CODE = #{company_code} OR SD.COMPANY_CODE = '*')
       </if>
       AND (
-        SLV.LAYOUT_DATA::text LIKE '%"flowId":' || #{flowId} || '%'
-        OR SLV.LAYOUT_DATA::text LIKE '%"flowId":"' || #{flowId} || '"%'
+        SLV.LAYOUT_DATA::text LIKE '%"flowId":' || #{flow_id} || '%'
+        OR SLV.LAYOUT_DATA::text LIKE '%"flowId":"' || #{flow_id} || '"%'
       )
   </select>
 
   <delete id="deleteFlowStepConnections" parameterType="map">
     DELETE FROM FLOW_STEP_CONNECTION
-    WHERE FLOW_DEFINITION_ID = #{flowId}
+    WHERE FLOW_DEFINITION_ID = #{flow_id}
   </delete>
 
   <delete id="deleteFlowSteps" parameterType="map">
     DELETE FROM FLOW_STEP
-    WHERE FLOW_DEFINITION_ID = #{flowId}
+    WHERE FLOW_DEFINITION_ID = #{flow_id}
   </delete>
 
   <delete id="deleteFlowDefinition" parameterType="map">
     DELETE FROM FLOW_DEFINITION
-    WHERE ID = #{flowId}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE ID = #{flow_id}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
   <delete id="deleteNodeFlowsByFlowId" parameterType="map">
     DELETE FROM NODE_FLOWS
-    WHERE FLOW_ID = #{flowId}
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE FLOW_ID = #{flow_id}
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     </if>
   </delete>
 
@@ -1067,7 +1067,7 @@
     <foreach collection="screenIds" item="id" open="(" separator="," close=")">
       #{id}
     </foreach>
-    AND (COMPANY_CODE = #{sourceCompanyCode} OR COMPANY_CODE = '*')
+    AND (COMPANY_CODE = #{source_company_code} OR COMPANY_CODE = '*')
     AND IS_ACTIVE = 'Y'
   </select>
 
@@ -1079,11 +1079,11 @@
         , DISPLAY_ORDER
         , CREATED_BY
     ) VALUES (
-        #{screenId}
-        , #{menuObjid}
-        , #{companyCode}
-        , #{displayOrder}
-        , #{createdBy}
+        #{screen_id}
+        , #{menu_objid}
+        , #{company_code}
+        , #{display_order}
+        , #{created_by}
     )
     ON CONFLICT DO NOTHING
   </insert>
@@ -1092,7 +1092,7 @@
     SELECT
         *
     FROM CODE_CATEGORY
-    WHERE (COMPANY_CODE = #{sourceCompanyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{source_company_code} OR COMPANY_CODE = '*')
   </select>
 
   <insert id="upsertCodeCategory" parameterType="map">
@@ -1102,9 +1102,9 @@
         , COMPANY_CODE
         , DESCRIPTION
     ) VALUES (
-        #{categoryCode}
-        , #{categoryName}
-        , #{targetCompanyCode}
+        #{category_code}
+        , #{category_name}
+        , #{target_company_code}
         , #{description}
     )
     ON CONFLICT (CATEGORY_CODE, COMPANY_CODE) DO UPDATE SET
@@ -1116,8 +1116,8 @@
     SELECT
         *
     FROM CODE_INFO
-    WHERE (COMPANY_CODE = #{sourceCompanyCode} OR COMPANY_CODE = '*')
-      AND CODE_CATEGORY = #{codeCategory}
+    WHERE (COMPANY_CODE = #{source_company_code} OR COMPANY_CODE = '*')
+      AND CODE_CATEGORY = #{code_category}
   </select>
 
   <insert id="upsertCodeInfo" parameterType="map">
@@ -1129,12 +1129,12 @@
         , SORT_ORDER
         , IS_ACTIVE
     ) VALUES (
-        #{codeCategory}
-        , #{codeValue}
-        , #{codeName}
-        , #{targetCompanyCode}
-        , #{sortOrder}
-        , #{isActive}
+        #{code_category}
+        , #{code_value}
+        , #{code_name}
+        , #{target_company_code}
+        , #{sort_order}
+        , #{is_active}
     )
     ON CONFLICT (CODE_CATEGORY, CODE_VALUE, COMPANY_CODE) DO UPDATE SET
         CODE_NAME = EXCLUDED.CODE_NAME
@@ -1146,7 +1146,7 @@
     SELECT
         *
     FROM CATEGORY_TREE
-    WHERE (COMPANY_CODE = #{sourceCompanyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{source_company_code} OR COMPANY_CODE = '*')
   </select>
 
   <insert id="upsertCategoryTree" parameterType="map">
@@ -1157,11 +1157,11 @@
         , COMPANY_CODE
         , SORT_ORDER
     ) VALUES (
-        #{categoryCode}
-        , #{categoryName}
-        , #{parentCode}
-        , #{targetCompanyCode}
-        , #{sortOrder}
+        #{category_code}
+        , #{category_name}
+        , #{parent_code}
+        , #{target_company_code}
+        , #{sort_order}
     )
     ON CONFLICT (CATEGORY_CODE, COMPANY_CODE) DO UPDATE SET
         CATEGORY_NAME = EXCLUDED.CATEGORY_NAME
@@ -1173,7 +1173,7 @@
     SELECT
         *
     FROM CATEGORY_VALUE
-    WHERE (COMPANY_CODE = #{sourceCompanyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{source_company_code} OR COMPANY_CODE = '*')
   </select>
 
   <insert id="upsertCategoryValue" parameterType="map">
@@ -1184,11 +1184,11 @@
         , COMPANY_CODE
         , SORT_ORDER
     ) VALUES (
-        #{categoryCode}
-        , #{valueCode}
-        , #{valueName}
-        , #{targetCompanyCode}
-        , #{sortOrder}
+        #{category_code}
+        , #{value_code}
+        , #{value_name}
+        , #{target_company_code}
+        , #{sort_order}
     )
     ON CONFLICT (CATEGORY_CODE, VALUE_CODE, COMPANY_CODE) DO UPDATE SET
         VALUE_NAME = EXCLUDED.VALUE_NAME
@@ -1199,7 +1199,7 @@
     SELECT
         *
     FROM TABLE_TYPE_COLUMNS
-    WHERE (COMPANY_CODE = #{sourceCompanyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{source_company_code} OR COMPANY_CODE = '*')
   </select>
 
   <insert id="upsertTableTypeColumn" parameterType="map">
@@ -1213,14 +1213,14 @@
         , DISPLAY_ORDER
         , IS_NULLABLE
     ) VALUES (
-        #{tableName}
-        , #{columnName}
-        , #{columnLabel}
-        , #{inputType}
-        , #{targetCompanyCode}
-        , #{isVisible}
-        , #{displayOrder}
-        , #{isNullable}
+        #{table_name}
+        , #{column_name}
+        , #{column_label}
+        , #{input_type}
+        , #{target_company_code}
+        , #{is_visible}
+        , #{display_order}
+        , #{is_nullable}
     )
     ON CONFLICT (TABLE_NAME, COLUMN_NAME, COMPANY_CODE) DO UPDATE SET
         COLUMN_LABEL = EXCLUDED.COLUMN_LABEL
@@ -1233,7 +1233,7 @@
     SELECT
         *
     FROM CASCADING_RELATION
-    WHERE (COMPANY_CODE = #{sourceCompanyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{source_company_code} OR COMPANY_CODE = '*')
   </select>
 
   <insert id="upsertCascadingRelation" parameterType="map">
@@ -1244,11 +1244,11 @@
         , CHILD_COLUMN
         , COMPANY_CODE
     ) VALUES (
-        #{parentTable}
-        , #{parentColumn}
-        , #{childTable}
-        , #{childColumn}
-        , #{targetCompanyCode}
+        #{parent_table}
+        , #{parent_column}
+        , #{child_table}
+        , #{child_column}
+        , #{target_company_code}
     )
     ON CONFLICT (PARENT_TABLE, PARENT_COLUMN, CHILD_TABLE, CHILD_COLUMN, COMPANY_CODE)
     DO NOTHING
@@ -1260,8 +1260,8 @@
     SELECT
         *
     FROM SCREEN_DEFINITIONS
-    WHERE SCREEN_CODE = #{screenCode}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE SCREEN_CODE = #{screen_code}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
       AND IS_ACTIVE != 'D'
     LIMIT 1
   </select>
@@ -1277,14 +1277,14 @@
         , DB_SOURCE_TYPE
         , DATA_SOURCE_TYPE
     ) VALUES (
-        #{screenName}
-        , #{screenCode}
-        , #{tableName}
-        , #{companyCode}
+        #{screen_name}
+        , #{screen_code}
+        , #{table_name}
+        , #{company_code}
         , #{description}
-        , #{createdBy}
-        , #{dbSourceType}
-        , #{dataSourceType}
+        , #{created_by}
+        , #{db_source_type}
+        , #{data_source_type}
     )
     RETURNING
         SCREEN_ID
@@ -1303,13 +1303,13 @@
         , CREATED_BY
         , UPDATED_BY
     ) VALUES (
-        #{screenId}
-        , #{companyCode}
-        , #{layoutData}::jsonb
+        #{screen_id}
+        , #{company_code}
+        , #{layout_data}::jsonb
         , NOW()
         , NOW()
-        , #{userId}
-        , #{userId}
+        , #{user_id}
+        , #{user_id}
     )
     ON CONFLICT (SCREEN_ID, COMPANY_CODE) DO UPDATE SET
         LAYOUT_DATA = EXCLUDED.LAYOUT_DATA
@@ -1335,7 +1335,7 @@
     FROM INFORMATION_SCHEMA.TABLES T
     WHERE TABLE_SCHEMA = 'public'
       AND TABLE_TYPE = 'BASE TABLE'
-      AND TABLE_NAME = #{tableName}
+      AND TABLE_NAME = #{table_name}
     LIMIT 1
   </select>
 
@@ -1350,7 +1350,7 @@
         , C.NUMERIC_SCALE
     FROM INFORMATION_SCHEMA.COLUMNS C
     WHERE C.TABLE_SCHEMA = 'public'
-      AND C.TABLE_NAME = #{tableName}
+      AND C.TABLE_NAME = #{table_name}
     ORDER BY C.ORDINAL_POSITION
   </select>
 
@@ -1367,8 +1367,8 @@
         , DISPLAY_ORDER
         , DESCRIPTION
     FROM TABLE_TYPE_COLUMNS
-    WHERE TABLE_NAME = #{tableName}
-      AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE TABLE_NAME = #{table_name}
+      AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     ORDER BY DISPLAY_ORDER NULLS LAST, COLUMN_NAME
   </select>
 
diff --git a/backend-spring/src/main/resources/mapper/shippingOrder.xml b/backend-spring/src/main/resources/mapper/shippingOrder.xml
index 4544a25b..2b27b154 100644
--- a/backend-spring/src/main/resources/mapper/shippingOrder.xml
+++ b/backend-spring/src/main/resources/mapper/shippingOrder.xml
@@ -5,14 +5,14 @@
 
   <!-- ── 동적 검색 조건 (alias si. 사용, companyCodeFilter 직접 작성) ── -->
   <sql id="shippingOrderSearchCondition">
-    <if test="companyCode != null and companyCode != &quot;*&quot;">
-      AND (si.company_code = #{companyCode} OR si.company_code = '*')
+    <if test="company_code != null and company_code != &quot;*&quot;">
+      AND (si.company_code = #{company_code} OR si.company_code = '*')
     </if>
-    <if test="dateFrom != null and dateFrom != ''">
-      AND si.instruction_date &gt;= #{dateFrom}::date
+    <if test="date_from != null and date_from != ''">
+      AND si.instruction_date &gt;= #{date_from}::date
     </if>
-    <if test="dateTo != null and dateTo != ''">
-      AND si.instruction_date &lt;= #{dateTo}::date
+    <if test="date_to != null and date_to != ''">
+      AND si.instruction_date &lt;= #{date_to}::date
     </if>
     <if test="status != null and status != ''">
       AND si.status = #{status}
@@ -87,7 +87,7 @@
     FROM shipment_instruction
 
     WHERE id = #{id}
-      AND (company_code = #{companyCode} OR company_code = '*')
+      AND (company_code = #{company_code} OR company_code = '*')
   </select>
 
   <select id="getShippingOrderSeqNo" parameterType="map" resultType="map">
@@ -95,8 +95,8 @@
 
     FROM shipment_instruction
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
-      AND instruction_no LIKE #{likePattern}
+    WHERE (company_code = #{company_code} OR company_code = '*')
+      AND instruction_no LIKE #{like_pattern}
   </select>
 
   <insert id="insertShippingOrder" parameterType="map" useGeneratedKeys="true" keyProperty="id">
@@ -106,11 +106,11 @@
       arrival_time, delivery_address,
       created_date, created_by
     ) VALUES (
-      #{companyCode}, #{instructionNo}, #{instructionDate}::date, #{partnerId},
+      #{company_code}, #{instruction_no}, #{instruction_date}::date, #{partner_id},
       COALESCE(#{status}, 'READY'), #{memo},
-      #{carrierName}, #{vehicleNo}, #{driverName}, #{driverContact},
-      #{arrivalTime}, #{deliveryAddress},
-      NOW(), #{createdBy}
+      #{carrier_name}, #{vehicle_no}, #{driver_name}, #{driver_contact},
+      #{arrival_time}, #{delivery_address},
+      NOW(), #{created_by}
     )
   </insert>
 
@@ -118,34 +118,34 @@
     UPDATE shipment_instruction
 
     SET
-      instruction_date  = #{instructionDate}::date,
-      partner_id        = #{partnerId},
+      instruction_date  = #{instruction_date}::date,
+      partner_id        = #{partner_id},
       status            = COALESCE(#{status}, 'READY'),
       memo              = #{memo},
-      carrier_name      = #{carrierName},
-      vehicle_no        = #{vehicleNo},
-      driver_name       = #{driverName},
-      driver_contact    = #{driverContact},
-      arrival_time      = #{arrivalTime},
-      delivery_address  = #{deliveryAddress},
+      carrier_name      = #{carrier_name},
+      vehicle_no        = #{vehicle_no},
+      driver_name       = #{driver_name},
+      driver_contact    = #{driver_contact},
+      arrival_time      = #{arrival_time},
+      delivery_address  = #{delivery_address},
       updated_date      = NOW(),
-      updated_by        = #{updatedBy}
+      updated_by        = #{updated_by}
 
     WHERE id = #{id}
-      AND (company_code = #{companyCode} OR company_code = '*')
+      AND (company_code = #{company_code} OR company_code = '*')
   </update>
 
   <delete id="deleteShippingOrderDetails" parameterType="map">
     DELETE FROM shipment_instruction_detail
 
-    WHERE instruction_id = #{instructionId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE instruction_id = #{instruction_id}
+      AND (company_code = #{company_code} OR company_code = '*')
   </delete>
 
   <delete id="deleteShippingOrders" parameterType="map">
     DELETE FROM shipment_instruction
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
+    WHERE (company_code = #{company_code} OR company_code = '*')
       AND id IN
       <foreach collection="ids" item="id" open="(" separator="," close=")">
         #{id}
@@ -156,7 +156,7 @@
     DELETE FROM shipment_instruction
 
     WHERE id = #{id}
-      AND (company_code = #{companyCode} OR company_code = '*')
+      AND (company_code = #{company_code} OR company_code = '*')
   </delete>
 
   <insert id="insertShippingOrderDetail" parameterType="map">
@@ -167,11 +167,11 @@
       order_qty, plan_qty, ship_qty,
       source_type, created_date, created_by
     ) VALUES (
-      #{companyCode}, #{instructionId},
-      #{shipmentPlanId}, #{salesOrderId}, #{detailId},
-      #{itemCode}, #{itemName}, #{spec}, #{material},
-      COALESCE(#{orderQty}, 0), COALESCE(#{planQty}, 0), COALESCE(#{shipQty}, 0),
-      COALESCE(#{sourceType}, 'shipmentPlan'), NOW(), #{createdBy}
+      #{company_code}, #{instruction_id},
+      #{shipment_plan_id}, #{sales_order_id}, #{detail_id},
+      #{item_code}, #{item_name}, #{spec}, #{material},
+      COALESCE(#{order_qty}, 0), COALESCE(#{plan_qty}, 0), COALESCE(#{ship_qty}, 0),
+      COALESCE(#{source_type}, 'shipmentPlan'), NOW(), #{created_by}
     )
   </insert>
 
@@ -189,7 +189,7 @@
     LEFT JOIN customer_mng c
       ON COALESCE(m.partner_id, d.delivery_partner_code) = c.customer_code
       AND sp.company_code = c.company_code
-    WHERE (sp.company_code = #{companyCode} OR sp.company_code = '*')
+    WHERE (sp.company_code = #{company_code} OR sp.company_code = '*')
       AND sp.status = 'READY'
     <if test="keyword != null and keyword != ''">
       AND (COALESCE(d.part_code, m.part_code, '') ILIKE '%' || #{keyword} || '%'
@@ -216,7 +216,7 @@
     <include refid="shipmentPlanSourceFrom"/>
 
     ORDER BY sp.created_date DESC
-    LIMIT #{pageSize} OFFSET #{offset}
+    LIMIT #{page_size} OFFSET #{offset}
   </select>
 
   <select id="getShipmentPlanSourceCnt" parameterType="map" resultType="int">
@@ -236,7 +236,7 @@
     LEFT JOIN customer_mng c
       ON COALESCE(d.delivery_partner_code, m.partner_id) = c.customer_code
       AND d.company_code = c.company_code
-    WHERE (d.company_code = #{companyCode} OR d.company_code = '*')
+    WHERE (d.company_code = #{company_code} OR d.company_code = '*')
     <if test="keyword != null and keyword != ''">
       AND (d.part_code ILIKE '%' || #{keyword} || '%'
            OR COALESCE(i.item_name, d.part_name, d.part_code) ILIKE '%' || #{keyword} || '%'
@@ -260,7 +260,7 @@
     <include refid="salesOrderSourceFrom"/>
 
     ORDER BY d.created_date DESC
-    LIMIT #{pageSize} OFFSET #{offset}
+    LIMIT #{page_size} OFFSET #{offset}
   </select>
 
   <select id="getSalesOrderSourceCnt" parameterType="map" resultType="int">
@@ -271,7 +271,7 @@
   <!-- ── 품목 소스 (item_info) ── -->
   <sql id="itemSourceFrom">
     FROM item_info
-    WHERE (company_code = #{companyCode} OR company_code = '*')
+    WHERE (company_code = #{company_code} OR company_code = '*')
     <if test="keyword != null and keyword != ''">
       AND (item_number ILIKE '%' || #{keyword} || '%'
            OR item_name ILIKE '%' || #{keyword} || '%')
@@ -287,7 +287,7 @@
     <include refid="itemSourceFrom"/>
 
     ORDER BY item_name
-    LIMIT #{pageSize} OFFSET #{offset}
+    LIMIT #{page_size} OFFSET #{offset}
   </select>
 
   <select id="getItemSourceCnt" parameterType="map" resultType="int">
diff --git a/backend-spring/src/main/resources/mapper/shippingPlan.xml b/backend-spring/src/main/resources/mapper/shippingPlan.xml
index cf2171b2..24fce242 100644
--- a/backend-spring/src/main/resources/mapper/shippingPlan.xml
+++ b/backend-spring/src/main/resources/mapper/shippingPlan.xml
@@ -20,14 +20,14 @@
   </sql>
 
   <sql id="shippingPlanSearchCondition">
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (sp.company_code = #{companyCode} OR sp.company_code = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (sp.company_code = #{company_code} OR sp.company_code = '*')
     </if>
-    <if test="dateFrom != null and dateFrom != ''">
-      AND sp.plan_date &gt;= #{dateFrom}::date
+    <if test="date_from != null and date_from != ''">
+      AND sp.plan_date &gt;= #{date_from}::date
     </if>
-    <if test="dateTo != null and dateTo != ''">
-      AND sp.plan_date &lt;= #{dateTo}::date
+    <if test="date_to != null and date_to != ''">
+      AND sp.plan_date &lt;= #{date_to}::date
     </if>
     <if test="status != null and status != ''">
       AND sp.status = #{status}
@@ -102,8 +102,8 @@
     <include refid="shippingPlanJoins"/>
 
     WHERE sp.id = #{id}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (sp.company_code = #{companyCode} OR sp.company_code = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (sp.company_code = #{company_code} OR sp.company_code = '*')
     </if>
   </select>
 
@@ -112,14 +112,14 @@
       company_code, detail_id, sales_order_id,
       plan_qty, plan_date, status, memo, created_by, created_date
     ) VALUES (
-      #{companyCode},
-      #{detailId},
-      #{salesOrderId}::integer,
-      #{planQty}::numeric,
-      COALESCE(#{planDate}::date, CURRENT_DATE),
+      #{company_code},
+      #{detail_id},
+      #{sales_order_id}::integer,
+      #{plan_qty}::numeric,
+      COALESCE(#{plan_date}::date, CURRENT_DATE),
       COALESCE(#{status}, 'READY'),
       #{memo},
-      #{createdBy},
+      #{created_by},
       NOW()
     )
   </insert>
@@ -129,15 +129,15 @@
 
     SET
       updated_date = NOW()
-      <if test="updatedBy != null">, updated_by = #{updatedBy}</if>
-      <if test="planQty != null">, plan_qty = #{planQty}::numeric</if>
-      <if test="planDate != null and planDate != ''">, plan_date = #{planDate}::date</if>
+      <if test="updated_by != null">, updated_by = #{updated_by}</if>
+      <if test="plan_qty != null">, plan_qty = #{plan_qty}::numeric</if>
+      <if test="plan_date != null and plan_date != ''">, plan_date = #{plan_date}::date</if>
       <if test="memo != null">, memo = #{memo}</if>
       <if test="status != null">, status = #{status}</if>
 
     WHERE id = #{id}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </update>
 
@@ -145,8 +145,8 @@
     DELETE FROM shipment_plan
 
     WHERE id = #{id}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </delete>
 
diff --git a/backend-spring/src/main/resources/mapper/systemNotice.xml b/backend-spring/src/main/resources/mapper/systemNotice.xml
index cbd2d735..f90abe2e 100644
--- a/backend-spring/src/main/resources/mapper/systemNotice.xml
+++ b/backend-spring/src/main/resources/mapper/systemNotice.xml
@@ -17,8 +17,8 @@
     FROM SYSTEM_NOTICE
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
-    <if test="isActive != null">
-      AND IS_ACTIVE = #{isActive}
+    <if test="is_active != null">
+      AND IS_ACTIVE = #{is_active}
     </if>
     ORDER BY CREATED_DATE DESC
     <include refid="common.pagination"/>
@@ -30,8 +30,8 @@
     FROM SYSTEM_NOTICE
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
-    <if test="isActive != null">
-      AND IS_ACTIVE = #{isActive}
+    <if test="is_active != null">
+      AND IS_ACTIVE = #{is_active}
     </if>
   </select>
 
@@ -54,9 +54,9 @@
   <!-- 공지사항 등록 -->
   <insert id="insertSystemNotice" parameterType="map" useGeneratedKeys="true" keyProperty="id">
     INSERT INTO SYSTEM_NOTICE (COMPANY_CODE, TITLE, CONTENT, IS_ACTIVE, CREATED_BY, CREATED_DATE, UPDATED_DATE)
-    VALUES (#{companyCode}, #{title}, #{content},
-            COALESCE(#{isActive}, TRUE),
-            #{createdBy}, NOW(), NOW())
+    VALUES (#{company_code}, #{title}, #{content},
+            COALESCE(#{is_active}, TRUE),
+            #{created_by}, NOW(), NOW())
   </insert>
 
   <!-- 공지사항 수정 -->
@@ -69,8 +69,8 @@
       <if test="content != null">
         CONTENT = #{content},
       </if>
-      <if test="isActive != null">
-        IS_ACTIVE = #{isActive},
+      <if test="is_active != null">
+        IS_ACTIVE = #{is_active},
       </if>
       UPDATED_DATE = NOW()
     </set>
diff --git a/backend-spring/src/main/resources/mapper/tableCategoryValue.xml b/backend-spring/src/main/resources/mapper/tableCategoryValue.xml
index ec43f56f..7c6969b3 100644
--- a/backend-spring/src/main/resources/mapper/tableCategoryValue.xml
+++ b/backend-spring/src/main/resources/mapper/tableCategoryValue.xml
@@ -20,11 +20,11 @@
       ON  tc.table_name  = cv.table_name
       AND tc.column_name = cv.column_name
       AND cv.is_active   = TRUE
-      <if test='companyCode != null and companyCode != "*"'>
-      AND (cv.company_code = #{companyCode} OR cv.company_code = '*')
+      <if test='company_code != null and company_code != "*"'>
+      AND (cv.company_code = #{company_code} OR cv.company_code = '*')
       </if>
 
-    WHERE tc.table_name  = #{tableName}
+    WHERE tc.table_name  = #{table_name}
       AND tc.input_type  = 'category'
 
     GROUP BY tc.table_name, tc.column_name, tc.display_order
@@ -50,8 +50,8 @@
       SELECT table_name, column_name, COUNT(*) AS cnt
       FROM category_values
       WHERE is_active = TRUE
-      <if test='companyCode != null and companyCode != "*"'>
-        AND (company_code = #{companyCode} OR company_code = '*')
+      <if test='company_code != null and company_code != "*"'>
+        AND (company_code = #{company_code} OR company_code = '*')
       </if>
       GROUP BY table_name, column_name
     ) cv_count
@@ -89,17 +89,17 @@
 
     FROM category_values
 
-    WHERE table_name  = #{tableName}
-      AND column_name = #{columnName}
+    WHERE table_name  = #{table_name}
+      AND column_name = #{column_name}
     <choose>
-      <when test='companyCode != null and companyCode != "*"'>
-        AND (company_code = #{companyCode} OR company_code = '*')
+      <when test='company_code != null and company_code != "*"'>
+        AND (company_code = #{company_code} OR company_code = '*')
       </when>
       <otherwise>
         AND company_code = '*'
       </otherwise>
     </choose>
-    <if test="includeInactive == null or includeInactive == false">
+    <if test="include_inactive == null or include_inactive == false">
       AND is_active = TRUE
     </if>
 
@@ -130,7 +130,7 @@
 
     FROM category_values
 
-    WHERE value_id = #{valueId}
+    WHERE value_id = #{value_id}
   </select>
 
   <!-- 사용 여부 확인용: table_name, column_name, value_code, value_label 반환 -->
@@ -143,9 +143,9 @@
 
     FROM category_values
 
-    WHERE value_id = #{valueId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE value_id = #{value_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </select>
 
@@ -158,7 +158,7 @@
 
     FROM category_values
 
-    WHERE value_id = #{valueId}
+    WHERE value_id = #{value_id}
   </select>
 
   <!-- ══════════════════════════════════════════════════════════════
@@ -167,35 +167,35 @@
 
   <select id="countDuplicateCode" parameterType="map" resultType="int">
     SELECT COUNT(*) FROM category_values
-    WHERE table_name  = #{tableName}
-      AND column_name = #{columnName}
-      AND value_code  = #{valueCode}
-      AND menu_objid  = #{menuObjid}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE table_name  = #{table_name}
+      AND column_name = #{column_name}
+      AND value_code  = #{value_code}
+      AND menu_objid  = #{menu_objid}
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </select>
 
   <select id="countDuplicateLabel" parameterType="map" resultType="int">
     SELECT COUNT(*) FROM category_values
-    WHERE table_name  = #{tableName}
-      AND column_name = #{columnName}
-      AND value_label = #{valueLabel}
+    WHERE table_name  = #{table_name}
+      AND column_name = #{column_name}
+      AND value_label = #{value_label}
       AND is_active   = TRUE
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </select>
 
   <!-- 수정 시 자기 자신 제외 라벨 중복 체크 (항상 company_code 필터) -->
   <select id="countDuplicateLabelExcludeSelf" parameterType="map" resultType="int">
     SELECT COUNT(*) FROM category_values
-    WHERE table_name  = #{tableName}
-      AND column_name = #{columnName}
-      AND value_label = #{valueLabel}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE table_name  = #{table_name}
+      AND column_name = #{column_name}
+      AND value_label = #{value_label}
+      AND (company_code = #{company_code} OR company_code = '*')
       AND is_active   = TRUE
-      AND value_id   != #{valueId}
+      AND value_id   != #{value_id}
   </select>
 
   <insert id="insertCategoryValue" parameterType="map"
@@ -205,28 +205,28 @@
       parent_value_id, depth, description, color, icon,
       is_active, is_default, company_code, menu_objid, created_by
     ) VALUES (
-      #{tableName}, #{columnName}, #{valueCode}, #{valueLabel}, #{valueOrder},
-      #{parentValueId}, #{depth}, #{description}, #{color}, #{icon},
-      #{isActive}, #{isDefault}, #{companyCode}, #{menuObjid}, #{userId}
+      #{table_name}, #{column_name}, #{value_code}, #{value_label}, #{value_order},
+      #{parent_value_id}, #{depth}, #{description}, #{color}, #{icon},
+      #{is_active}, #{is_default}, #{company_code}, #{menu_objid}, #{user_id}
     )
   </insert>
 
   <update id="updateCategoryValue" parameterType="map">
     UPDATE category_values
     <set>
-      <if test="valueLabel != null">value_label = #{valueLabel},</if>
-      <if test="valueOrder != null">value_order = #{valueOrder},</if>
+      <if test="value_label != null">value_label = #{value_label},</if>
+      <if test="value_order != null">value_order = #{value_order},</if>
       <if test="description != null">description = #{description},</if>
       <if test="color != null">color = #{color},</if>
       <if test="icon != null">icon = #{icon},</if>
-      <if test="isActive != null">is_active = #{isActive},</if>
-      <if test="isDefault != null">is_default = #{isDefault},</if>
+      <if test="is_active != null">is_active = #{is_active},</if>
+      <if test="is_default != null">is_default = #{is_default},</if>
       UPDATED_DATE = NOW(),
-      updated_by = #{userId}
+      updated_by = #{user_id}
     </set>
-    WHERE value_id = #{valueId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE value_id = #{value_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </update>
 
@@ -237,7 +237,7 @@
   <select id="checkTableExistsForUsage" parameterType="map" resultType="int">
     SELECT COUNT(*) FROM information_schema.tables
     WHERE table_schema = 'public'
-      AND table_name   = #{tableName}
+      AND table_name   = #{table_name}
   </select>
 
   <!--
@@ -249,9 +249,9 @@
 
     FROM ${safeTableName}
 
-    WHERE ${safeColumnName} = #{valueCode}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE ${safeColumnName} = #{value_code}
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </select>
 
@@ -266,8 +266,8 @@
     INNER JOIN screen_menu_assignments sma ON sma.menu_objid  = mi.objid
     INNER JOIN screen_definitions      sd  ON sd.screen_id    = sma.screen_id
 
-    WHERE sd.table_name    = #{tableName}
-      AND (mi.company_code  = #{companyCode} OR mi.company_code = '*')
+    WHERE sd.table_name    = #{table_name}
+      AND (mi.company_code  = #{company_code} OR mi.company_code = '*')
 
     ORDER BY mi.menu_name_kor
   </select>
@@ -277,16 +277,16 @@
     WITH RECURSIVE category_tree AS (
       SELECT value_id
       FROM   category_values
-      WHERE  parent_value_id = #{valueId}
-      <if test='companyCode != null and companyCode != "*"'>
-        AND (company_code = #{companyCode} OR company_code = '*')
+      WHERE  parent_value_id = #{value_id}
+      <if test='company_code != null and company_code != "*"'>
+        AND (company_code = #{company_code} OR company_code = '*')
       </if>
       UNION ALL
       SELECT cv.value_id
       FROM   category_values cv
       INNER JOIN category_tree ct ON cv.parent_value_id = ct.value_id
-      <if test='companyCode != null and companyCode != "*"'>
-      WHERE  (cv.company_code = #{companyCode} OR cv.company_code = '*')
+      <if test='company_code != null and company_code != "*"'>
+      WHERE  (cv.company_code = #{company_code} OR cv.company_code = '*')
       </if>
     )
     SELECT value_id AS value_id FROM category_tree
@@ -294,9 +294,9 @@
 
   <delete id="deleteValueById" parameterType="map">
     DELETE FROM category_values
-    WHERE value_id = #{valueId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE value_id = #{value_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </delete>
 
@@ -308,23 +308,23 @@
     UPDATE category_values
     SET is_active  = FALSE,
         UPDATED_DATE = NOW(),
-        updated_by = #{userId}
+        updated_by = #{user_id}
     WHERE value_id IN
     <foreach collection="valueIds" item="id" open="(" separator="," close=")">
       #{id}
     </foreach>
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </update>
 
   <update id="updateValueOrder" parameterType="map">
     UPDATE category_values
-    SET value_order = #{valueOrder},
+    SET value_order = #{value_order},
         UPDATED_DATE  = NOW()
-    WHERE value_id = #{valueId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE value_id = #{value_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </update>
 
@@ -339,10 +339,10 @@
 
     FROM category_column_mapping
 
-    WHERE table_name  = #{tableName}
-      AND menu_objid  = #{menuObjid}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE table_name  = #{table_name}
+      AND menu_objid  = #{menu_objid}
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </select>
 
@@ -355,10 +355,10 @@
 
     FROM category_column_mapping
 
-    WHERE table_name = #{tableName}
-      AND menu_objid = #{menuObjid}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE table_name = #{table_name}
+      AND menu_objid = #{menu_objid}
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
 
     ORDER BY logical_column_name
@@ -367,8 +367,8 @@
   <select id="checkPhysicalColumnExists" parameterType="map" resultType="int">
     SELECT COUNT(*) FROM information_schema.columns
     WHERE table_schema = 'public'
-      AND table_name   = #{tableName}
-      AND column_name  = #{physicalColumnName}
+      AND table_name   = #{table_name}
+      AND column_name  = #{physical_column_name}
   </select>
 
   <!-- UPSERT: ON CONFLICT (table_name, logical_column_name, menu_objid, company_code) -->
@@ -377,8 +377,8 @@
       table_name, logical_column_name, physical_column_name,
       menu_objid, company_code, description, created_by, updated_by
     ) VALUES (
-      #{tableName}, #{logicalColumnName}, #{physicalColumnName},
-      #{menuObjid}, #{companyCode}, #{description}, #{userId}, #{userId}
+      #{table_name}, #{logical_column_name}, #{physical_column_name},
+      #{menu_objid}, #{company_code}, #{description}, #{user_id}, #{user_id}
     )
     ON CONFLICT (table_name, logical_column_name, menu_objid, company_code)
     DO UPDATE SET
@@ -393,26 +393,26 @@
 
     FROM category_column_mapping
 
-    WHERE table_name          = #{tableName}
-      AND logical_column_name = #{logicalColumnName}
-      AND menu_objid          = #{menuObjid}
-      AND (company_code        = #{companyCode} OR company_code = '*')
+    WHERE table_name          = #{table_name}
+      AND logical_column_name = #{logical_column_name}
+      AND menu_objid          = #{menu_objid}
+      AND (company_code        = #{company_code} OR company_code = '*')
   </select>
 
   <delete id="deleteColumnMappingById" parameterType="map">
     DELETE FROM category_column_mapping
-    WHERE mapping_id = #{mappingId}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE mapping_id = #{mapping_id}
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </delete>
 
   <delete id="deleteColumnMappingsByColumn" parameterType="map">
     DELETE FROM category_column_mapping
-    WHERE table_name          = #{tableName}
-      AND logical_column_name = #{columnName}
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE table_name          = #{table_name}
+      AND logical_column_name = #{column_name}
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </delete>
 
@@ -431,8 +431,8 @@
     <foreach collection="valueCodes" item="code" open="(" separator="," close=")">
       #{code}
     </foreach>
-    <if test='companyCode != null and companyCode != "*"'>
-      AND (company_code = #{companyCode} OR company_code = '*')
+    <if test='company_code != null and company_code != "*"'>
+      AND (company_code = #{company_code} OR company_code = '*')
     </if>
   </select>
 
@@ -460,8 +460,8 @@
     WHERE m1.menu_type     = '1'
       AND m1.status        = 'active'
       AND m0.parent_obj_id = '0'
-    <if test='hasCompanyCode and companyCode != null and companyCode != "*"'>
-      AND (m1.company_code = #{companyCode} OR m1.company_code = '*')
+    <if test='has_company_code and company_code != null and company_code != "*"'>
+      AND (m1.company_code = #{company_code} OR m1.company_code = '*')
     </if>
 
     ORDER BY m0.seq, m1.seq
diff --git a/backend-spring/src/main/resources/mapper/tableHistory.xml b/backend-spring/src/main/resources/mapper/tableHistory.xml
index db4384e8..70e57867 100644
--- a/backend-spring/src/main/resources/mapper/tableHistory.xml
+++ b/backend-spring/src/main/resources/mapper/tableHistory.xml
@@ -21,23 +21,23 @@
 
   <!-- 전체 이력 WHERE 조건 (original_id 제외) -->
   <sql id="allHistoryFilter">
-    <if test="operationType != null and operationType != ''">
-      AND operation_type = #{operationType}
+    <if test="operation_type != null and operation_type != ''">
+      AND operation_type = #{operation_type}
     </if>
-    <if test="changedByLike != null">
-      AND changed_by ILIKE #{changedByLike}
+    <if test="changed_by_like != null">
+      AND changed_by ILIKE #{changed_by_like}
     </if>
-    <if test="startDate != null and startDate != ''">
-      AND changed_at &gt;= #{startDate}::timestamp
+    <if test="start_date != null and start_date != ''">
+      AND changed_at &gt;= #{start_date}::timestamp
     </if>
-    <if test="endDate != null and endDate != ''">
-      AND changed_at &lt;= #{endDate}::timestamp
+    <if test="end_date != null and end_date != ''">
+      AND changed_at &lt;= #{end_date}::timestamp
     </if>
   </sql>
 
   <!-- 특정 레코드 이력 WHERE 조건 -->
   <sql id="recordHistoryFilter">
-    WHERE original_id = #{recordId}
+    WHERE original_id = #{record_id}
     <include refid="allHistoryFilter"/>
   </sql>
 
@@ -47,7 +47,7 @@
     SELECT EXISTS (
       SELECT FROM information_schema.tables
       WHERE table_schema = 'public'
-        AND table_name = #{logTableName}
+        AND table_name = #{log_table_name}
     ) AS "exists"
   </select>
 
@@ -129,7 +129,7 @@
 
       FROM ${logTableName}
 
-      WHERE original_id = #{recordId}
+      WHERE original_id = #{record_id}
 
       GROUP BY changed_at, changed_by, operation_type, ip_address, full_row_before, full_row_after
 
diff --git a/backend-spring/src/main/resources/mapper/tableManagement.xml b/backend-spring/src/main/resources/mapper/tableManagement.xml
index 4509247b..f183fb9a 100644
--- a/backend-spring/src/main/resources/mapper/tableManagement.xml
+++ b/backend-spring/src/main/resources/mapper/tableManagement.xml
@@ -30,7 +30,7 @@
     SELECT
         COUNT(*)
     FROM INFORMATION_SCHEMA.COLUMNS C
-    WHERE C.TABLE_NAME = #{tableName}
+    WHERE C.TABLE_NAME = #{table_name}
   </select>
 
   <!-- ═══════════════════════════════════════════════════
@@ -78,10 +78,10 @@
       JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU
         ON TC.CONSTRAINT_NAME = KCU.CONSTRAINT_NAME AND TC.TABLE_SCHEMA = KCU.TABLE_SCHEMA
       WHERE TC.CONSTRAINT_TYPE = 'PRIMARY KEY'
-        AND TC.TABLE_NAME = #{tableName}
+        AND TC.TABLE_NAME = #{table_name}
     ) PK
       ON C.COLUMN_NAME = PK.COLUMN_NAME AND C.TABLE_NAME = PK.TABLE_NAME
-    WHERE C.TABLE_NAME = #{tableName}
+    WHERE C.TABLE_NAME = #{table_name}
     ORDER BY C.ORDINAL_POSITION
     LIMIT #{size} OFFSET #{offset}
   </select>
@@ -122,7 +122,7 @@
     LEFT JOIN TABLE_TYPE_COLUMNS CL
       ON C.TABLE_NAME = CL.TABLE_NAME AND C.COLUMN_NAME = CL.COLUMN_NAME AND CL.COMPANY_CODE = '*'
     LEFT JOIN TABLE_TYPE_COLUMNS TTC
-      ON C.TABLE_NAME = TTC.TABLE_NAME AND C.COLUMN_NAME = TTC.COLUMN_NAME AND (TTC.COMPANY_CODE = #{companyCode} OR TTC.COMPANY_CODE = '*')
+      ON C.TABLE_NAME = TTC.TABLE_NAME AND C.COLUMN_NAME = TTC.COLUMN_NAME AND (TTC.COMPANY_CODE = #{company_code} OR TTC.COMPANY_CODE = '*')
     LEFT JOIN TABLE_TYPE_COLUMNS DCL
       ON COALESCE(TTC.REFERENCE_TABLE, CL.REFERENCE_TABLE) = DCL.TABLE_NAME
       AND COALESCE(TTC.DISPLAY_COLUMN, CL.DISPLAY_COLUMN) = DCL.COLUMN_NAME
@@ -135,10 +135,10 @@
       JOIN INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU
         ON TC.CONSTRAINT_NAME = KCU.CONSTRAINT_NAME AND TC.TABLE_SCHEMA = KCU.TABLE_SCHEMA
       WHERE TC.CONSTRAINT_TYPE = 'PRIMARY KEY'
-        AND TC.TABLE_NAME = #{tableName}
+        AND TC.TABLE_NAME = #{table_name}
     ) PK
       ON C.COLUMN_NAME = PK.COLUMN_NAME AND C.TABLE_NAME = PK.TABLE_NAME
-    WHERE C.TABLE_NAME = #{tableName}
+    WHERE C.TABLE_NAME = #{table_name}
     ORDER BY C.ORDINAL_POSITION
     LIMIT #{size} OFFSET #{offset}
   </select>
@@ -160,17 +160,17 @@
         , CASE
             WHEN C.COLUMN_NAME IN (
               SELECT KCU.COLUMN_NAME FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE KCU
-              WHERE KCU.TABLE_NAME = #{tableName} AND KCU.CONSTRAINT_NAME LIKE '%_pkey'
+              WHERE KCU.TABLE_NAME = #{table_name} AND KCU.CONSTRAINT_NAME LIKE '%_pkey'
             ) THEN TRUE ELSE FALSE
           END AS "isPrimaryKey"
         , COL_DESCRIPTION(
             (SELECT OID FROM PG_CLASS
-             WHERE RELNAME = #{tableName}
+             WHERE RELNAME = #{table_name}
                AND RELNAMESPACE = (SELECT OID FROM PG_NAMESPACE WHERE NSPNAME = 'public')),
             C.ORDINAL_POSITION
           ) AS "columnComment"
     FROM INFORMATION_SCHEMA.COLUMNS C
-    WHERE C.TABLE_NAME = #{tableName}
+    WHERE C.TABLE_NAME = #{table_name}
       AND C.TABLE_SCHEMA = 'public'
     ORDER BY C.ORDINAL_POSITION
   </select>
@@ -181,7 +181,7 @@
   <select id="checkTableExists" parameterType="map" resultType="map">
     SELECT EXISTS (
       SELECT 1 FROM INFORMATION_SCHEMA.TABLES
-      WHERE TABLE_NAME = #{tableName}
+      WHERE TABLE_NAME = #{table_name}
         AND TABLE_SCHEMA = 'public'
         AND TABLE_TYPE = 'BASE TABLE'
     ) AS "exists"
@@ -198,7 +198,7 @@
         , CREATED_DATE AS "createdDate"
         , UPDATED_DATE AS "updatedDate"
     FROM TABLE_LABELS
-    WHERE TABLE_NAME = #{tableName}
+    WHERE TABLE_NAME = #{table_name}
   </select>
 
   <insert id="upsertTableLabel" parameterType="map">
@@ -209,8 +209,8 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{tableName}
-        , #{displayName}
+        #{table_name}
+        , #{display_name}
         , #{description}
         , NOW()
         , NOW()
@@ -230,8 +230,8 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{tableName}
-        , #{tableName}
+        #{table_name}
+        , #{table_name}
         , ''
         , NOW()
         , NOW()
@@ -260,8 +260,8 @@
         , CREATED_DATE AS "createdDate"
         , UPDATED_DATE AS "updatedDate"
     FROM TABLE_TYPE_COLUMNS
-    WHERE TABLE_NAME = #{tableName}
-      AND COLUMN_NAME = #{columnName}
+    WHERE TABLE_NAME = #{table_name}
+      AND COLUMN_NAME = #{column_name}
       AND COMPANY_CODE = '*'
   </select>
 
@@ -288,21 +288,21 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{tableName}
-        , #{columnName}
-        , #{columnLabel}
-        , #{inputType}
-        , #{detailSettings}::JSONB
-        , #{codeCategory}
-        , #{codeValue}
-        , #{referenceTable}
-        , #{referenceColumn}
-        , #{displayColumn}
-        , #{displayOrder}
-        , #{isVisible}
+        #{table_name}
+        , #{column_name}
+        , #{column_label}
+        , #{input_type}
+        , #{detail_settings}::JSONB
+        , #{code_category}
+        , #{code_value}
+        , #{reference_table}
+        , #{reference_column}
+        , #{display_column}
+        , #{display_order}
+        , #{is_visible}
         , 'Y'
-        , #{companyCode}
-        , #{categoryRef}
+        , #{company_code}
+        , #{category_ref}
         , NOW()
         , NOW()
     )
@@ -337,13 +337,13 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{tableName}
-        , #{columnName}
-        , #{inputType}
-        , #{detailSettings}::JSONB
+        #{table_name}
+        , #{column_name}
+        , #{input_type}
+        , #{detail_settings}::JSONB
         , 'Y'
         , 0
-        , #{companyCode}
+        , #{company_code}
         , NOW()
         , NOW()
     )
@@ -351,12 +351,12 @@
     DO UPDATE SET
         INPUT_TYPE      = EXCLUDED.INPUT_TYPE
         , DETAIL_SETTINGS = EXCLUDED.DETAIL_SETTINGS
-        , REFERENCE_TABLE = CASE WHEN #{clearEntity} = 'true' THEN NULL ELSE TABLE_TYPE_COLUMNS.REFERENCE_TABLE END
-        , REFERENCE_COLUMN= CASE WHEN #{clearEntity} = 'true' THEN NULL ELSE TABLE_TYPE_COLUMNS.REFERENCE_COLUMN END
-        , DISPLAY_COLUMN  = CASE WHEN #{clearEntity} = 'true' THEN NULL ELSE TABLE_TYPE_COLUMNS.DISPLAY_COLUMN END
-        , CODE_CATEGORY   = CASE WHEN #{clearCode} = 'true' THEN NULL ELSE TABLE_TYPE_COLUMNS.CODE_CATEGORY END
-        , CODE_VALUE      = CASE WHEN #{clearCode} = 'true' THEN NULL ELSE TABLE_TYPE_COLUMNS.CODE_VALUE END
-        , CATEGORY_REF    = CASE WHEN #{clearCategory} = 'true' THEN NULL ELSE TABLE_TYPE_COLUMNS.CATEGORY_REF END
+        , REFERENCE_TABLE = CASE WHEN #{clear_entity} = 'true' THEN NULL ELSE TABLE_TYPE_COLUMNS.REFERENCE_TABLE END
+        , REFERENCE_COLUMN= CASE WHEN #{clear_entity} = 'true' THEN NULL ELSE TABLE_TYPE_COLUMNS.REFERENCE_COLUMN END
+        , DISPLAY_COLUMN  = CASE WHEN #{clear_entity} = 'true' THEN NULL ELSE TABLE_TYPE_COLUMNS.DISPLAY_COLUMN END
+        , CODE_CATEGORY   = CASE WHEN #{clear_code} = 'true' THEN NULL ELSE TABLE_TYPE_COLUMNS.CODE_CATEGORY END
+        , CODE_VALUE      = CASE WHEN #{clear_code} = 'true' THEN NULL ELSE TABLE_TYPE_COLUMNS.CODE_VALUE END
+        , CATEGORY_REF    = CASE WHEN #{clear_category} = 'true' THEN NULL ELSE TABLE_TYPE_COLUMNS.CATEGORY_REF END
         , UPDATED_DATE    = NOW()
   </insert>
 
@@ -376,10 +376,10 @@
     FROM TABLE_TYPE_COLUMNS TTC
     LEFT JOIN INFORMATION_SCHEMA.COLUMNS IC
       ON TTC.TABLE_NAME = IC.TABLE_NAME AND TTC.COLUMN_NAME = IC.COLUMN_NAME
-    WHERE TTC.TABLE_NAME = #{tableName}
-      AND TTC.COMPANY_CODE IN (#{companyCode}, '*')
+    WHERE TTC.TABLE_NAME = #{table_name}
+      AND TTC.COMPANY_CODE IN (#{company_code}, '*')
     ORDER BY TTC.COLUMN_NAME,
-      CASE WHEN TTC.COMPANY_CODE = #{companyCode} THEN 0 ELSE 1 END,
+      CASE WHEN TTC.COMPANY_CODE = #{company_code} THEN 0 ELSE 1 END,
       TTC.DISPLAY_ORDER
   </select>
 
@@ -399,7 +399,7 @@
     JOIN PG_ATTRIBUTE A
       ON A.ATTRELID = TC.CONRELID AND A.ATTNUM = X.ATTNUM
     WHERE NS.NSPNAME = 'public'
-      AND C.RELNAME = #{tableName}
+      AND C.RELNAME = #{table_name}
       AND TC.CONTYPE = 'p'
     GROUP BY TC.CONNAME
   </select>
@@ -423,7 +423,7 @@
     JOIN PG_ATTRIBUTE A
       ON A.ATTRELID = T.OID AND A.ATTNUM = X.ATTNUM
     WHERE NS.NSPNAME = 'public'
-      AND T.RELNAME = #{tableName}
+      AND T.RELNAME = #{table_name}
       AND IX.INDISPRIMARY = FALSE
     GROUP BY I.RELNAME, IX.INDISUNIQUE
     ORDER BY I.RELNAME
@@ -441,16 +441,16 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{tableName}
-        , #{columnName}
-        , #{isNullable}
-        , #{companyCode}
+        #{table_name}
+        , #{column_name}
+        , #{is_nullable}
+        , #{company_code}
         , NOW()
         , NOW()
     )
     ON CONFLICT (TABLE_NAME, COLUMN_NAME, COMPANY_CODE)
     DO UPDATE SET
-        IS_NULLABLE = #{isNullable}
+        IS_NULLABLE = #{is_nullable}
         , UPDATED_DATE = NOW()
   </insert>
 
@@ -463,16 +463,16 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{tableName}
-        , #{columnName}
-        , #{isUnique}
-        , #{companyCode}
+        #{table_name}
+        , #{column_name}
+        , #{is_unique}
+        , #{company_code}
         , NOW()
         , NOW()
     )
     ON CONFLICT (TABLE_NAME, COLUMN_NAME, COMPANY_CODE)
     DO UPDATE SET
-        IS_UNIQUE = #{isUnique}
+        IS_UNIQUE = #{is_unique}
         , UPDATED_DATE = NOW()
   </insert>
 
@@ -483,8 +483,8 @@
     SELECT
         COUNT(*)
     FROM INFORMATION_SCHEMA.COLUMNS
-    WHERE TABLE_NAME  = #{tableName}
-      AND COLUMN_NAME = #{columnName}
+    WHERE TABLE_NAME  = #{table_name}
+      AND COLUMN_NAME = #{column_name}
       AND TABLE_SCHEMA = 'public'
   </select>
 
@@ -495,11 +495,11 @@
     SELECT DISTINCT ON (COLUMN_NAME)
         COLUMN_NAME AS column_name
     FROM TABLE_TYPE_COLUMNS
-    WHERE TABLE_NAME   = #{tableName}
+    WHERE TABLE_NAME   = #{table_name}
       AND IS_NULLABLE  = 'N'
-      AND COMPANY_CODE IN (#{companyCode}, '*')
+      AND COMPANY_CODE IN (#{company_code}, '*')
     ORDER BY COLUMN_NAME,
-      CASE WHEN COMPANY_CODE = #{companyCode} THEN 0 ELSE 1 END
+      CASE WHEN COMPANY_CODE = #{company_code} THEN 0 ELSE 1 END
   </select>
 
   <!-- ═══════════════════════════════════════════════════
@@ -509,11 +509,11 @@
     SELECT DISTINCT ON (COLUMN_NAME)
         COLUMN_NAME AS column_name
     FROM TABLE_TYPE_COLUMNS
-    WHERE TABLE_NAME   = #{tableName}
+    WHERE TABLE_NAME   = #{table_name}
       AND IS_UNIQUE    = 'Y'
-      AND COMPANY_CODE IN (#{companyCode}, '*')
+      AND COMPANY_CODE IN (#{company_code}, '*')
     ORDER BY COLUMN_NAME,
-      CASE WHEN COMPANY_CODE = #{companyCode} THEN 0 ELSE 1 END
+      CASE WHEN COMPANY_CODE = #{company_code} THEN 0 ELSE 1 END
   </select>
 
   <!-- ═══════════════════════════════════════════════════
@@ -531,9 +531,9 @@
     LEFT JOIN TABLE_LABELS TL
       ON TTC.TABLE_NAME = TL.TABLE_NAME
     WHERE TTC.INPUT_TYPE = 'category'
-      AND TTC.COMPANY_CODE IN (#{companyCode}, '*')
+      AND TTC.COMPANY_CODE IN (#{company_code}, '*')
     ORDER BY TTC.TABLE_NAME, TTC.COLUMN_NAME,
-      CASE WHEN TTC.COMPANY_CODE = #{companyCode} THEN 0 ELSE 1 END
+      CASE WHEN TTC.COMPANY_CODE = #{company_code} THEN 0 ELSE 1 END
   </select>
 
   <!-- ═══════════════════════════════════════════════════
@@ -550,9 +550,9 @@
     LEFT JOIN TABLE_LABELS TL
       ON TTC.TABLE_NAME = TL.TABLE_NAME
     WHERE TTC.INPUT_TYPE = 'numbering'
-      AND TTC.COMPANY_CODE IN (#{companyCode}, '*')
+      AND TTC.COMPANY_CODE IN (#{company_code}, '*')
     ORDER BY TTC.TABLE_NAME, TTC.COLUMN_NAME,
-      CASE WHEN TTC.COMPANY_CODE = #{companyCode} THEN 0 ELSE 1 END
+      CASE WHEN TTC.COMPANY_CODE = #{company_code} THEN 0 ELSE 1 END
   </select>
 
   <!-- ═══════════════════════════════════════════════════
@@ -569,12 +569,12 @@
     JOIN CATEGORY_COLUMN_MAPPING CCM
       ON TTC.TABLE_NAME = CCM.TABLE_NAME
       AND TTC.COLUMN_NAME = CCM.LOGICAL_COLUMN_NAME
-      AND CCM.COMPANY_CODE IN (#{companyCode}, '*')
+      AND CCM.COMPANY_CODE IN (#{company_code}, '*')
     WHERE TTC.INPUT_TYPE = 'category'
-      AND TTC.COMPANY_CODE IN (#{companyCode}, '*')
-      AND CCM.MENU_OBJID = #{menuObjid}
+      AND TTC.COMPANY_CODE IN (#{company_code}, '*')
+      AND CCM.MENU_OBJID = #{menu_objid}
     ORDER BY TTC.TABLE_NAME, TTC.COLUMN_NAME,
-      CASE WHEN TTC.COMPANY_CODE = #{companyCode} THEN 0 ELSE 1 END
+      CASE WHEN TTC.COMPANY_CODE = #{company_code} THEN 0 ELSE 1 END
   </select>
 
   <!-- ═══════════════════════════════════════════════════
@@ -588,10 +588,10 @@
         , LEFT_COL.DISPLAY_COLUMN AS "displayColumn"
         , COALESCE(LEFT_COL.COLUMN_LABEL, LEFT_COL.COLUMN_NAME) AS "columnLabel"
     FROM TABLE_TYPE_COLUMNS LEFT_COL
-    WHERE LEFT_COL.TABLE_NAME = #{leftTable}
-      AND LEFT_COL.REFERENCE_TABLE = #{rightTable}
+    WHERE LEFT_COL.TABLE_NAME = #{left_table}
+      AND LEFT_COL.REFERENCE_TABLE = #{right_table}
       AND LEFT_COL.INPUT_TYPE = 'entity'
-      AND LEFT_COL.COMPANY_CODE IN (#{companyCode}, '*')
+      AND LEFT_COL.COMPANY_CODE IN (#{company_code}, '*')
     ORDER BY LEFT_COL.DISPLAY_ORDER
   </select>
 
@@ -609,9 +609,9 @@
     FROM TABLE_TYPE_COLUMNS TTC
     LEFT JOIN TABLE_LABELS TL
       ON TTC.TABLE_NAME = TL.TABLE_NAME
-    WHERE TTC.REFERENCE_TABLE = #{tableName}
+    WHERE TTC.REFERENCE_TABLE = #{table_name}
       AND TTC.INPUT_TYPE = 'entity'
-      AND TTC.COMPANY_CODE IN (#{companyCode}, '*')
+      AND TTC.COMPANY_CODE IN (#{company_code}, '*')
     ORDER BY TTC.TABLE_NAME, TTC.COLUMN_NAME
   </select>
 
@@ -626,7 +626,7 @@
         , CREATED_DATE AS "createdDate"
         , UPDATED_DATE AS "updatedDate"
     FROM LOG_TABLES
-    WHERE TABLE_NAME = #{tableName}
+    WHERE TABLE_NAME = #{table_name}
   </select>
 
   <insert id="upsertLogConfig" parameterType="map">
@@ -637,16 +637,16 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{tableName}
-        , #{isActive}
-        , #{logColumns}
+        #{table_name}
+        , #{is_active}
+        , #{log_columns}
         , NOW()
         , NOW()
     )
     ON CONFLICT (TABLE_NAME)
     DO UPDATE SET
-        IS_ACTIVE    = #{isActive}
-        , LOG_COLUMNS  = #{logColumns}
+        IS_ACTIVE    = #{is_active}
+        , LOG_COLUMNS  = #{log_columns}
         , UPDATED_DATE = NOW()
   </insert>
 
@@ -668,15 +668,15 @@
         PROPERTIES = JSONB_SET(
           JSONB_SET(
             SL.PROPERTIES,
-            '{widgetType}', TO_JSONB(#{componentId}::TEXT)
+            '{widgetType}', TO_JSONB(#{component_id}::TEXT)
           ),
-          '{componentType}', TO_JSONB(#{componentId}::TEXT)
+          '{componentType}', TO_JSONB(#{component_id}::TEXT)
         )
     FROM SCREEN_DEFINITIONS SD
     WHERE SL.SCREEN_ID = SD.SCREEN_ID
-      AND SL.PROPERTIES->>'tableName' = #{tableName}
-      AND SL.PROPERTIES->>'columnName' = #{columnName}
-      AND ((SD.COMPANY_CODE = #{companyCode} OR SD.COMPANY_CODE = '*') OR #{companyCode} = '*')
+      AND SL.PROPERTIES->>'tableName' = #{table_name}
+      AND SL.PROPERTIES->>'columnName' = #{column_name}
+      AND ((SD.COMPANY_CODE = #{company_code} OR SD.COMPANY_CODE = '*') OR #{company_code} = '*')
   </update>
 
 </mapper>
diff --git a/backend-spring/src/main/resources/mapper/taxInvoice.xml b/backend-spring/src/main/resources/mapper/taxInvoice.xml
index 415f0775..fc414850 100644
--- a/backend-spring/src/main/resources/mapper/taxInvoice.xml
+++ b/backend-spring/src/main/resources/mapper/taxInvoice.xml
@@ -89,7 +89,7 @@
   <select id="getLastInvoiceNumber" parameterType="map" resultType="String">
     SELECT INVOICE_NUMBER
     FROM TAX_INVOICE
-    WHERE (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    WHERE (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     AND INVOICE_NUMBER LIKE #{prefix}
     ORDER BY INVOICE_NUMBER DESC
     LIMIT 1
@@ -102,7 +102,7 @@
       SUPPLY_AMOUNT, TAX_AMOUNT, REMARKS
     FROM TAX_INVOICE_ITEM
     WHERE TAX_INVOICE_ID = #{id}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
     ORDER BY ITEM_SEQ
   </select>
 
@@ -116,7 +116,7 @@
       REMARKS, ORDER_ID, CUSTOMER_ID, COST_TYPE, WRITER,
       CREATED_DATE, UPDATED_DATE
     ) VALUES (
-      #{companyCode}, #{invoiceNumber}, #{invoice_type}, 'draft',
+      #{company_code}, #{invoice_number}, #{invoice_type}, 'draft',
       #{supplier_business_no}, #{supplier_name}, #{supplier_ceo_name}, #{supplier_address},
       #{supplier_business_type}, #{supplier_business_item},
       #{buyer_business_no}, #{buyer_name}, #{buyer_ceo_name}, #{buyer_address}, #{buyer_email},
@@ -132,7 +132,7 @@
       ITEM_DATE, ITEM_NAME, ITEM_SPEC, QUANTITY, UNIT_PRICE,
       SUPPLY_AMOUNT, TAX_AMOUNT, REMARKS
     ) VALUES (
-      #{taxInvoiceId}, #{companyCode}, #{itemSeq},
+      #{tax_invoice_id}, #{company_code}, #{item_seq},
       #{item_date}, #{item_name}, #{item_spec}, #{quantity}, #{unit_price},
       #{supply_amount}, #{tax_amount}, #{remarks}
     )
@@ -219,8 +219,8 @@
     UPDATE TAX_INVOICE
     SET
       INVOICE_STATUS = 'cancelled',
-      <if test="cancelReason != null and cancelReason != ''">
-      REMARKS = #{cancelReason},
+      <if test="cancel_reason != null and cancel_reason != ''">
+      REMARKS = #{cancel_reason},
       </if>
       UPDATED_DATE = NOW()
     WHERE ID = #{id}
@@ -237,7 +237,7 @@
   <delete id="deleteTaxInvoiceItemsByInvoiceId" parameterType="map">
     DELETE FROM TAX_INVOICE_ITEM
     WHERE TAX_INVOICE_ID = #{id}
-    AND (COMPANY_CODE = #{companyCode} OR COMPANY_CODE = '*')
+    AND (COMPANY_CODE = #{company_code} OR COMPANY_CODE = '*')
   </delete>
 
   <select id="getMonthlyStats" parameterType="map" resultType="map">
@@ -250,8 +250,8 @@
     FROM TAX_INVOICE
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
-    AND INVOICE_DATE &gt;= #{startDate}
-    AND INVOICE_DATE &lt;= #{endDate}
+    AND INVOICE_DATE &gt;= #{start_date}
+    AND INVOICE_DATE &lt;= #{end_date}
     AND INVOICE_STATUS != 'cancelled'
     GROUP BY INVOICE_TYPE
   </select>
@@ -267,13 +267,13 @@
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
     AND INVOICE_STATUS != 'cancelled'
-    <if test="startDate != null">
-      AND INVOICE_DATE &gt;= #{startDate}
+    <if test="start_date != null">
+      AND INVOICE_DATE &gt;= #{start_date}
     </if>
-    <if test="endDate != null">
-      AND INVOICE_DATE &lt;= #{endDate}
+    <if test="end_date != null">
+      AND INVOICE_DATE &lt;= #{end_date}
     </if>
-    <if test="startDate == null and year != null">
+    <if test="start_date == null and year != null">
       AND EXTRACT(YEAR FROM INVOICE_DATE)::INTEGER = #{year}
     </if>
     GROUP BY COST_TYPE
@@ -290,13 +290,13 @@
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
     AND INVOICE_STATUS != 'cancelled'
-    <if test="startDate != null">
-      AND INVOICE_DATE &gt;= #{startDate}
+    <if test="start_date != null">
+      AND INVOICE_DATE &gt;= #{start_date}
     </if>
-    <if test="endDate != null">
-      AND INVOICE_DATE &lt;= #{endDate}
+    <if test="end_date != null">
+      AND INVOICE_DATE &lt;= #{end_date}
     </if>
-    <if test="startDate == null and year != null">
+    <if test="start_date == null and year != null">
       AND EXTRACT(YEAR FROM INVOICE_DATE)::INTEGER = #{year}
     </if>
     GROUP BY TO_CHAR(INVOICE_DATE, 'YYYY-MM'), COST_TYPE
@@ -317,13 +317,13 @@
     WHERE 1=1
     <include refid="common.companyCodeFilter"/>
     AND INVOICE_STATUS != 'cancelled'
-    <if test="startDate != null">
-      AND INVOICE_DATE &gt;= #{startDate}
+    <if test="start_date != null">
+      AND INVOICE_DATE &gt;= #{start_date}
     </if>
-    <if test="endDate != null">
-      AND INVOICE_DATE &lt;= #{endDate}
+    <if test="end_date != null">
+      AND INVOICE_DATE &lt;= #{end_date}
     </if>
-    <if test="startDate == null and year != null">
+    <if test="start_date == null and year != null">
       AND EXTRACT(YEAR FROM INVOICE_DATE)::INTEGER = #{year}
     </if>
   </select>
diff --git a/backend-spring/src/main/resources/mapper/templateStandard.xml b/backend-spring/src/main/resources/mapper/templateStandard.xml
index e57d05b6..3c0ddec6 100644
--- a/backend-spring/src/main/resources/mapper/templateStandard.xml
+++ b/backend-spring/src/main/resources/mapper/templateStandard.xml
@@ -27,7 +27,7 @@
         OR template_name_eng ILIKE '%' || #{search} || '%'
         OR description       ILIKE '%' || #{search} || '%')
     </if>
-    AND (is_public = 'Y' OR (company_code = #{companyCode} OR company_code = '*'))
+    AND (is_public = 'Y' OR (company_code = #{company_code} OR company_code = '*'))
   </sql>
 
   <!-- 템플릿 목록 조회 -->
@@ -61,7 +61,7 @@
 
     FROM template_standards
 
-    WHERE template_code = #{templateCode}
+    WHERE template_code = #{template_code}
   </select>
 
   <!-- 템플릿 생성 -->
@@ -101,14 +101,14 @@
       <if test="updated_by != null">updated_by = #{updated_by},</if>
     </set>
 
-    WHERE template_code = #{templateCode}
+    WHERE template_code = #{template_code}
   </update>
 
   <!-- 템플릿 삭제 -->
   <delete id="deleteTemplateStandard" parameterType="map">
     DELETE FROM template_standards
 
-    WHERE template_code = #{templateCode}
+    WHERE template_code = #{template_code}
   </delete>
 
   <!-- 정렬 순서 단건 업데이트 -->
@@ -125,7 +125,7 @@
 
     FROM template_standards
 
-    WHERE (is_public = 'Y' OR (company_code = #{companyCode} OR company_code = '*'))
+    WHERE (is_public = 'Y' OR (company_code = #{company_code} OR company_code = '*'))
       AND is_active = 'Y'
       AND category IS NOT NULL
 
diff --git a/backend-spring/src/main/resources/mapper/todo.xml b/backend-spring/src/main/resources/mapper/todo.xml
index d2c52a01..2d2d71a9 100644
--- a/backend-spring/src/main/resources/mapper/todo.xml
+++ b/backend-spring/src/main/resources/mapper/todo.xml
@@ -14,8 +14,8 @@
     <if test="priority != null and priority != ''">
       AND PRIORITY = #{priority}
     </if>
-    <if test="assignedTo != null and assignedTo != ''">
-      AND ASSIGNED_TO = #{assignedTo}
+    <if test="assigned_to != null and assigned_to != ''">
+      AND ASSIGNED_TO = #{assigned_to}
     </if>
   </sql>
 
@@ -93,9 +93,9 @@
         , #{description, jdbcType=VARCHAR}
         , COALESCE(#{priority, jdbcType=VARCHAR}, 'normal')
         , COALESCE(#{status, jdbcType=VARCHAR}, 'pending')
-        , #{assignedTo, jdbcType=VARCHAR}
-        , #{dueDate, jdbcType=DATE}
-        , COALESCE(#{isUrgent, jdbcType=BOOLEAN}, FALSE)
+        , #{assigned_to, jdbcType=VARCHAR}
+        , #{due_date, jdbcType=DATE}
+        , COALESCE(#{is_urgent, jdbcType=BOOLEAN}, FALSE)
         , COALESCE((SELECT COALESCE(MAX(DISPLAY_ORDER), -1) + 1 FROM TODO_ITEMS), 0)
         , NOW()
         , NOW()
@@ -112,9 +112,9 @@
       , STATUS = #{status}
       <if test='status == "completed"'>, COMPLETED_AT = NOW()</if>
     </if>
-    <if test="assignedTo != null">, ASSIGNED_TO = #{assignedTo}</if>
-    <if test="dueDate != null">, DUE_DATE = #{dueDate}</if>
-    <if test="isUrgent != null">, IS_URGENT = #{isUrgent}</if>
+    <if test="assigned_to != null">, ASSIGNED_TO = #{assigned_to}</if>
+    <if test="due_date != null">, DUE_DATE = #{due_date}</if>
+    <if test="is_urgent != null">, IS_URGENT = #{is_urgent}</if>
     WHERE ID = #{id}
   </update>
 
@@ -126,7 +126,7 @@
   <update id="updateTodoOrder" parameterType="map">
     UPDATE TODO_ITEMS
     SET
-        DISPLAY_ORDER = #{displayOrder}
+        DISPLAY_ORDER = #{display_order}
         , UPDATED_DATE = NOW()
     WHERE ID = #{id}
   </update>
diff --git a/backend-spring/src/main/resources/mapper/vehicle.xml b/backend-spring/src/main/resources/mapper/vehicle.xml
index 5f838860..621e7842 100644
--- a/backend-spring/src/main/resources/mapper/vehicle.xml
+++ b/backend-spring/src/main/resources/mapper/vehicle.xml
@@ -59,14 +59,14 @@
         , CREATED_DATE
         , UPDATED_DATE
     ) VALUES (
-        #{vehicleNumber}
-        , #{vehicleType}
-        , #{userId}
-        , #{driverName}
-        , #{driverPhone}
-        , #{branchName}
+        #{vehicle_number}
+        , #{vehicle_type}
+        , #{user_id}
+        , #{driver_name}
+        , #{driver_phone}
+        , #{branch_name}
         , COALESCE(#{status}, 'off')
-        , #{companyCode}
+        , #{company_code}
         , NOW()
         , NOW()
     )
@@ -76,11 +76,11 @@
     UPDATE VEHICLES
 
     SET
-        VEHICLE_NUMBER = COALESCE(#{vehicleNumber}, VEHICLE_NUMBER)
-        , VEHICLE_TYPE   = COALESCE(#{vehicleType},   VEHICLE_TYPE)
-        , DRIVER_NAME    = COALESCE(#{driverName},     DRIVER_NAME)
-        , DRIVER_PHONE   = COALESCE(#{driverPhone},    DRIVER_PHONE)
-        , BRANCH_NAME    = COALESCE(#{branchName},     BRANCH_NAME)
+        VEHICLE_NUMBER = COALESCE(#{vehicle_number}, VEHICLE_NUMBER)
+        , VEHICLE_TYPE   = COALESCE(#{vehicle_type},   VEHICLE_TYPE)
+        , DRIVER_NAME    = COALESCE(#{driver_name},     DRIVER_NAME)
+        , DRIVER_PHONE   = COALESCE(#{driver_phone},    DRIVER_PHONE)
+        , BRANCH_NAME    = COALESCE(#{branch_name},     BRANCH_NAME)
         , STATUS         = COALESCE(#{status},         STATUS)
         , UPDATED_DATE     = NOW()
 
diff --git a/backend-spring/src/main/resources/mapper/vehicleTrip.xml b/backend-spring/src/main/resources/mapper/vehicleTrip.xml
index 2d60d45b..d6e85951 100644
--- a/backend-spring/src/main/resources/mapper/vehicleTrip.xml
+++ b/backend-spring/src/main/resources/mapper/vehicleTrip.xml
@@ -7,21 +7,21 @@
        동적 검색 조건 (getVehicleTripList / Cnt 공통)
        ═══════════════════════════════════════════════════ -->
   <sql id="vehicleTripSearchCondition">
-    AND (vts.company_code = #{companyCode} OR vts.company_code = '*')
-    <if test="userId != null and userId != ''">
-      AND vts.user_id = #{userId}
+    AND (vts.company_code = #{company_code} OR vts.company_code = '*')
+    <if test="user_id != null and user_id != ''">
+      AND vts.user_id = #{user_id}
     </if>
-    <if test="vehicleId != null">
-      AND vts.vehicle_id = #{vehicleId}
+    <if test="vehicle_id != null">
+      AND vts.vehicle_id = #{vehicle_id}
     </if>
     <if test="status != null and status != ''">
       AND vts.status = #{status}
     </if>
-    <if test="startDate != null and startDate != ''">
-      AND DATE(vts.start_time) &gt;= #{startDate}::date
+    <if test="start_date != null and start_date != ''">
+      AND DATE(vts.start_time) &gt;= #{start_date}::date
     </if>
-    <if test="endDate != null and endDate != ''">
-      AND DATE(vts.start_time) &lt;= #{endDate}::date
+    <if test="end_date != null and end_date != ''">
+      AND DATE(vts.start_time) &lt;= #{end_date}::date
     </if>
     <if test="departure != null and departure != ''">
       AND vts.departure = #{departure}
@@ -75,8 +75,8 @@
     LEFT JOIN user_info ui ON vts.user_id = ui.user_id
     LEFT JOIN vehicles v ON vts.vehicle_id = v.id
 
-    WHERE vts.trip_id = #{tripId}
-      AND (vts.company_code = #{companyCode} OR vts.company_code = '*')
+    WHERE vts.trip_id = #{trip_id}
+      AND (vts.company_code = #{company_code} OR vts.company_code = '*')
   </select>
 
   <!-- 경로(위치 이력) 조회 -->
@@ -87,8 +87,8 @@
 
     FROM vehicle_location_history
 
-    WHERE trip_id = #{tripId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE trip_id = #{trip_id}
+      AND (company_code = #{company_code} OR company_code = '*')
 
     ORDER BY recorded_at ASC
   </select>
@@ -99,8 +99,8 @@
 
     FROM vehicle_trip_summary
 
-    WHERE trip_id = #{tripId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE trip_id = #{trip_id}
+      AND (company_code = #{company_code} OR company_code = '*')
       AND status = 'active'
   </select>
 
@@ -110,8 +110,8 @@
 
     FROM vehicle_trip_summary
 
-    WHERE user_id = #{userId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE user_id = #{user_id}
+      AND (company_code = #{company_code} OR company_code = '*')
       AND status = 'active'
 
     ORDER BY start_time DESC
@@ -124,8 +124,8 @@
 
     FROM vehicle_location_history
 
-    WHERE trip_id = #{tripId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE trip_id = #{trip_id}
+      AND (company_code = #{company_code} OR company_code = '*')
 
     ORDER BY recorded_at DESC
     LIMIT 1
@@ -137,8 +137,8 @@
 
     FROM vehicle_location_history
 
-    WHERE trip_id = #{tripId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE trip_id = #{trip_id}
+      AND (company_code = #{company_code} OR company_code = '*')
 
     ORDER BY recorded_at ASC
   </select>
@@ -154,8 +154,8 @@
 
     FROM vehicle_location_history
 
-    WHERE trip_id = #{tripId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE trip_id = #{trip_id}
+      AND (company_code = #{company_code} OR company_code = '*')
   </select>
 
   <!-- ═══════════════════════════════════════════════════
@@ -169,14 +169,14 @@
       departure, arrival, departure_name, destination_name,
       start_time, status, company_code
     ) VALUES (
-      #{tripId},
-      #{userId},
-      #{vehicleId, jdbcType=INTEGER},
+      #{trip_id},
+      #{user_id},
+      #{vehicle_id, jdbcType=INTEGER},
       #{departure, jdbcType=VARCHAR},
       #{arrival, jdbcType=VARCHAR},
-      #{departureName, jdbcType=VARCHAR},
-      #{destinationName, jdbcType=VARCHAR},
-      NOW(), 'active', #{companyCode}
+      #{departure_name, jdbcType=VARCHAR},
+      #{destination_name, jdbcType=VARCHAR},
+      NOW(), 'active', #{company_code}
     )
   </insert>
 
@@ -188,19 +188,19 @@
       trip_status, departure, arrival, departure_name, destination_name,
       recorded_at, company_code
     ) VALUES (
-      #{tripId},
-      #{userId},
-      #{vehicleId, jdbcType=INTEGER},
+      #{trip_id},
+      #{user_id},
+      #{vehicle_id, jdbcType=INTEGER},
       #{latitude}, #{longitude},
       #{accuracy, jdbcType=DOUBLE},
       #{speed, jdbcType=DOUBLE},
-      #{distanceFromPrev, jdbcType=DOUBLE},
-      #{tripStatus},
+      #{distance_from_prev, jdbcType=DOUBLE},
+      #{trip_status},
       #{departure, jdbcType=VARCHAR},
       #{arrival, jdbcType=VARCHAR},
-      #{departureName, jdbcType=VARCHAR},
-      #{destinationName, jdbcType=VARCHAR},
-      NOW(), #{companyCode}
+      #{departure_name, jdbcType=VARCHAR},
+      #{destination_name, jdbcType=VARCHAR},
+      NOW(), #{company_code}
     )
   </insert>
 
@@ -210,13 +210,13 @@
 
     SET
       end_time = NOW(),
-      total_distance = #{totalDistance},
-      duration_minutes = #{durationMinutes},
-      location_count = #{locationCount},
+      total_distance = #{total_distance},
+      duration_minutes = #{duration_minutes},
+      location_count = #{location_count},
       status = 'completed'
 
-    WHERE trip_id = #{tripId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE trip_id = #{trip_id}
+      AND (company_code = #{company_code} OR company_code = '*')
   </update>
 
   <!-- 운행 취소: status=cancelled -->
@@ -227,8 +227,8 @@
       status = 'cancelled',
       end_time = NOW()
 
-    WHERE trip_id = #{tripId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE trip_id = #{trip_id}
+      AND (company_code = #{company_code} OR company_code = '*')
       AND status = 'active'
   </update>
 
@@ -236,8 +236,8 @@
   <delete id="deleteVehicleTrip" parameterType="map">
     DELETE FROM vehicle_trip_summary
 
-    WHERE trip_id = #{tripId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE trip_id = #{trip_id}
+      AND (company_code = #{company_code} OR company_code = '*')
   </delete>
 
   <!-- 위치 수 증가 -->
@@ -247,7 +247,7 @@
     SET
       location_count = COALESCE(location_count, '0')::INT + 1
 
-    WHERE trip_id = #{tripId}
+    WHERE trip_id = #{trip_id}
   </update>
 
   <!-- 인터페이스 메서드명 매핑 -->
@@ -257,14 +257,14 @@
       departure, arrival, departure_name, destination_name,
       start_time, status, company_code
     ) VALUES (
-      #{tripId},
-      #{userId},
-      #{vehicleId, jdbcType=INTEGER},
+      #{trip_id},
+      #{user_id},
+      #{vehicle_id, jdbcType=INTEGER},
       #{departure, jdbcType=VARCHAR},
       #{arrival, jdbcType=VARCHAR},
-      #{departureName, jdbcType=VARCHAR},
-      #{destinationName, jdbcType=VARCHAR},
-      NOW(), 'active', #{companyCode}
+      #{departure_name, jdbcType=VARCHAR},
+      #{destination_name, jdbcType=VARCHAR},
+      NOW(), 'active', #{company_code}
     )
   </insert>
 
@@ -273,7 +273,7 @@
 
     FROM vehicle_trip_summary
 
-    WHERE trip_id = #{tripId}
+    WHERE trip_id = #{trip_id}
   </select>
 
   <select id="getActiveTripByUserId" parameterType="map" resultType="map">
@@ -281,8 +281,8 @@
 
     FROM vehicle_trip_summary
 
-    WHERE user_id = #{userId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE user_id = #{user_id}
+      AND (company_code = #{company_code} OR company_code = '*')
       AND status = 'active'
 
     ORDER BY start_time DESC
@@ -294,12 +294,12 @@
 
     SET
       status           = COALESCE(#{status},          status),
-      end_time         = COALESCE(#{endTime},          end_time),
-      duration_minutes = COALESCE(#{durationMinutes}, duration_minutes),
-      total_distance   = COALESCE(#{totalDistance},   total_distance),
-      location_count   = COALESCE(#{locationCount},   location_count)
+      end_time         = COALESCE(#{end_time},          end_time),
+      duration_minutes = COALESCE(#{duration_minutes}, duration_minutes),
+      total_distance   = COALESCE(#{total_distance},   total_distance),
+      location_count   = COALESCE(#{location_count},   location_count)
 
-    WHERE trip_id = #{tripId}
+    WHERE trip_id = #{trip_id}
   </update>
 
   <update id="cancelVehicleTrip" parameterType="map">
@@ -309,8 +309,8 @@
       status   = 'cancelled',
       end_time = NOW()
 
-    WHERE trip_id = #{tripId}
-      AND (company_code = #{companyCode} OR company_code = '*')
+    WHERE trip_id = #{trip_id}
+      AND (company_code = #{company_code} OR company_code = '*')
       AND status = 'active'
   </update>
 
@@ -332,14 +332,14 @@
 
     FROM vehicle_trip_summary
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
-      AND DATE(start_time) &gt;= #{startDate}::date
-      AND DATE(start_time) &lt;= #{endDate}::date
-      <if test="userId != null and userId != ''">
-        AND user_id = #{userId}
+    WHERE (company_code = #{company_code} OR company_code = '*')
+      AND DATE(start_time) &gt;= #{start_date}::date
+      AND DATE(start_time) &lt;= #{end_date}::date
+      <if test="user_id != null and user_id != ''">
+        AND user_id = #{user_id}
       </if>
-      <if test="vehicleId != null">
-        AND vehicle_id = #{vehicleId}
+      <if test="vehicle_id != null">
+        AND vehicle_id = #{vehicle_id}
       </if>
 
     GROUP BY DATE(start_time)
@@ -360,14 +360,14 @@
 
     FROM vehicle_trip_summary
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
+    WHERE (company_code = #{company_code} OR company_code = '*')
       AND EXTRACT(YEAR FROM start_time) = #{year}
       AND EXTRACT(MONTH FROM start_time) = #{month}
-      <if test="userId != null and userId != ''">
-        AND user_id = #{userId}
+      <if test="user_id != null and user_id != ''">
+        AND user_id = #{user_id}
       </if>
-      <if test="vehicleId != null">
-        AND vehicle_id = #{vehicleId}
+      <if test="vehicle_id != null">
+        AND vehicle_id = #{vehicle_id}
       </if>
 
     GROUP BY EXTRACT(WEEK FROM start_time)
@@ -389,13 +389,13 @@
 
     FROM vehicle_trip_summary
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
+    WHERE (company_code = #{company_code} OR company_code = '*')
       AND EXTRACT(YEAR FROM start_time) = #{year}
-      <if test="userId != null and userId != ''">
-        AND user_id = #{userId}
+      <if test="user_id != null and user_id != ''">
+        AND user_id = #{user_id}
       </if>
-      <if test="vehicleId != null">
-        AND vehicle_id = #{vehicleId}
+      <if test="vehicle_id != null">
+        AND vehicle_id = #{vehicle_id}
       </if>
 
     GROUP BY EXTRACT(MONTH FROM start_time)
@@ -417,7 +417,7 @@
 
     FROM vehicle_trip_summary
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
+    WHERE (company_code = #{company_code} OR company_code = '*')
     <choose>
       <when test='period != null and "week".equals(period)'>
         AND start_time &gt;= CURRENT_DATE - INTERVAL '7 days'
@@ -448,12 +448,12 @@
     FROM vehicle_trip_summary vts
     LEFT JOIN user_info ui ON vts.user_id = ui.user_id
 
-    WHERE (vts.company_code = #{companyCode} OR vts.company_code = '*')
-      <if test="startDate != null and startDate != ''">
-        AND DATE(vts.start_time) &gt;= #{startDate}::date
+    WHERE (vts.company_code = #{company_code} OR vts.company_code = '*')
+      <if test="start_date != null and start_date != ''">
+        AND DATE(vts.start_time) &gt;= #{start_date}::date
       </if>
-      <if test="endDate != null and endDate != ''">
-        AND DATE(vts.start_time) &lt;= #{endDate}::date
+      <if test="end_date != null and end_date != ''">
+        AND DATE(vts.start_time) &lt;= #{end_date}::date
       </if>
 
     GROUP BY vts.user_id, ui.user_name
@@ -473,14 +473,14 @@
 
     FROM vehicle_trip_summary
 
-    WHERE (company_code = #{companyCode} OR company_code = '*')
+    WHERE (company_code = #{company_code} OR company_code = '*')
       AND departure IS NOT NULL
       AND arrival IS NOT NULL
-      <if test="startDate != null and startDate != ''">
-        AND DATE(start_time) &gt;= #{startDate}::date
+      <if test="start_date != null and start_date != ''">
+        AND DATE(start_time) &gt;= #{start_date}::date
       </if>
-      <if test="endDate != null and endDate != ''">
-        AND DATE(start_time) &lt;= #{endDate}::date
+      <if test="end_date != null and end_date != ''">
+        AND DATE(start_time) &lt;= #{end_date}::date
       </if>
 
     GROUP BY departure, arrival, departure_name, destination_name
diff --git a/backend-spring/src/main/resources/mapper/webTypeStandard.xml b/backend-spring/src/main/resources/mapper/webTypeStandard.xml
index 733b177f..01eaefe6 100644
--- a/backend-spring/src/main/resources/mapper/webTypeStandard.xml
+++ b/backend-spring/src/main/resources/mapper/webTypeStandard.xml
@@ -35,7 +35,7 @@
   <select id="selectWebType" parameterType="map" resultType="map">
     SELECT *
     FROM WEB_TYPE_STANDARDS
-    WHERE WEB_TYPE = #{webType}
+    WHERE WEB_TYPE = #{web_type}
   </select>
 
   <insert id="insertWebType" parameterType="map">
@@ -45,12 +45,12 @@
       DEFAULT_STYLE, INPUT_PROPERTIES, SORT_ORDER, IS_ACTIVE,
       CREATED_BY, CREATED_DATE, UPDATED_BY, UPDATED_DATE
     ) VALUES (
-      #{webType}, #{typeName}, #{typeNameEng}, #{description}, #{category},
-      #{componentName}, #{configPanel},
-      #{defaultConfig}::JSONB, #{validationRules}::JSONB,
-      #{defaultStyle}::JSONB, #{inputProperties}::JSONB,
-      #{sortOrder}, #{isActive},
-      #{createdBy}, NOW(), #{updatedBy}, NOW()
+      #{web_type}, #{type_name}, #{type_name_eng}, #{description}, #{category},
+      #{component_name}, #{config_panel},
+      #{default_config}::JSONB, #{validation_rules}::JSONB,
+      #{default_style}::JSONB, #{input_properties}::JSONB,
+      #{sort_order}, #{is_active},
+      #{created_by}, NOW(), #{updated_by}, NOW()
     )
   </insert>
 
@@ -58,34 +58,34 @@
   <update id="updateWebType" parameterType="map">
     UPDATE WEB_TYPE_STANDARDS
     <set>
-      <if test="typeName != null">TYPE_NAME        = #{typeName},</if>
-      <if test="typeNameEng != null">TYPE_NAME_ENG    = #{typeNameEng},</if>
+      <if test="type_name != null">TYPE_NAME        = #{type_name},</if>
+      <if test="type_name_eng != null">TYPE_NAME_ENG    = #{type_name_eng},</if>
       <if test="description != null">DESCRIPTION      = #{description},</if>
       <if test="category != null">CATEGORY         = #{category},</if>
-      <if test="componentName != null">COMPONENT_NAME   = #{componentName},</if>
-      <if test="configPanel != null">CONFIG_PANEL     = #{configPanel},</if>
-      <if test="defaultConfig != null">DEFAULT_CONFIG   = #{defaultConfig}::JSONB,</if>
-      <if test="validationRules != null">VALIDATION_RULES = #{validationRules}::JSONB,</if>
-      <if test="defaultStyle != null">DEFAULT_STYLE    = #{defaultStyle}::JSONB,</if>
-      <if test="inputProperties != null">INPUT_PROPERTIES = #{inputProperties}::JSONB,</if>
-      <if test="sortOrder != null">SORT_ORDER       = #{sortOrder},</if>
-      <if test="isActive != null">IS_ACTIVE        = #{isActive},</if>
-      UPDATED_BY   = #{updatedBy},
+      <if test="component_name != null">COMPONENT_NAME   = #{component_name},</if>
+      <if test="config_panel != null">CONFIG_PANEL     = #{config_panel},</if>
+      <if test="default_config != null">DEFAULT_CONFIG   = #{default_config}::JSONB,</if>
+      <if test="validation_rules != null">VALIDATION_RULES = #{validation_rules}::JSONB,</if>
+      <if test="default_style != null">DEFAULT_STYLE    = #{default_style}::JSONB,</if>
+      <if test="input_properties != null">INPUT_PROPERTIES = #{input_properties}::JSONB,</if>
+      <if test="sort_order != null">SORT_ORDER       = #{sort_order},</if>
+      <if test="is_active != null">IS_ACTIVE        = #{is_active},</if>
+      UPDATED_BY   = #{updated_by},
       UPDATED_DATE = NOW()
     </set>
-    WHERE WEB_TYPE = #{webType}
+    WHERE WEB_TYPE = #{web_type}
   </update>
 
   <delete id="deleteWebType" parameterType="map">
     DELETE FROM WEB_TYPE_STANDARDS
-    WHERE WEB_TYPE = #{webType}
+    WHERE WEB_TYPE = #{web_type}
   </delete>
 
   <!-- 정렬 순서 일괄 업데이트용 단건 UPDATE -->
   <update id="updateSortOrder" parameterType="map">
     UPDATE WEB_TYPE_STANDARDS
     SET SORT_ORDER   = #{sort_order},
-        UPDATED_BY   = #{userId},
+        UPDATED_BY   = #{user_id},
         UPDATED_DATE = NOW()
     WHERE WEB_TYPE = #{web_type}
   </update>
diff --git a/backend-spring/src/main/resources/mapper/yardLayout.xml b/backend-spring/src/main/resources/mapper/yardLayout.xml
index ff3f769f..3b1fe7ba 100644
--- a/backend-spring/src/main/resources/mapper/yardLayout.xml
+++ b/backend-spring/src/main/resources/mapper/yardLayout.xml
@@ -45,7 +45,7 @@
 
   <insert id="insertYardLayout" parameterType="map" useGeneratedKeys="true" keyProperty="id">
     INSERT INTO yard_layout (name, description, created_by, company_code, CREATED_DATE, UPDATED_DATE)
-    VALUES (#{name}, #{description}, #{createdBy}, #{companyCode}, NOW(), NOW())
+    VALUES (#{name}, #{description}, #{created_by}, #{company_code}, NOW(), NOW())
   </insert>
 
   <update id="updateYardLayout" parameterType="map">
@@ -73,7 +73,7 @@
 
     FROM yard_material_placement
 
-    WHERE yard_layout_id = #{yardLayoutId}
+    WHERE yard_layout_id = #{yard_layout_id}
 
     ORDER BY id ASC
   </select>
@@ -86,11 +86,11 @@
       color, data_source_type, data_source_config,
       data_binding, memo, CREATED_DATE, UPDATED_DATE
     ) VALUES (
-      #{yardLayoutId}, #{materialCode}, #{materialName}, #{quantity}, #{unit},
-      #{positionX}, #{positionY}, #{positionZ},
-      #{sizeX}, #{sizeY}, #{sizeZ},
-      #{color}, #{dataSourceType}, #{dataSourceConfig},
-      #{dataBinding}, #{memo}, NOW(), NOW()
+      #{yard_layout_id}, #{material_code}, #{material_name}, #{quantity}, #{unit},
+      #{position_x}, #{position_y}, #{position_z},
+      #{size_x}, #{size_y}, #{size_z},
+      #{color}, #{data_source_type}, #{data_source_config},
+      #{data_binding}, #{memo}, NOW(), NOW()
     )
   </insert>
 
@@ -98,20 +98,20 @@
     UPDATE yard_material_placement
 
     SET
-      material_code      = COALESCE(#{materialCode},      material_code),
-      material_name      = COALESCE(#{materialName},      material_name),
+      material_code      = COALESCE(#{material_code},      material_code),
+      material_name      = COALESCE(#{material_name},      material_name),
       quantity           = COALESCE(#{quantity},          quantity),
       unit               = COALESCE(#{unit},              unit),
-      position_x         = COALESCE(#{positionX},         position_x),
-      position_y         = COALESCE(#{positionY},         position_y),
-      position_z         = COALESCE(#{positionZ},         position_z),
-      size_x             = COALESCE(#{sizeX},             size_x),
-      size_y             = COALESCE(#{sizeY},             size_y),
-      size_z             = COALESCE(#{sizeZ},             size_z),
+      position_x         = COALESCE(#{position_x},         position_x),
+      position_y         = COALESCE(#{position_y},         position_y),
+      position_z         = COALESCE(#{position_z},         position_z),
+      size_x             = COALESCE(#{size_x},             size_x),
+      size_y             = COALESCE(#{size_y},             size_y),
+      size_z             = COALESCE(#{size_z},             size_z),
       color              = COALESCE(#{color},             color),
-      data_source_type   = COALESCE(#{dataSourceType},   data_source_type),
-      data_source_config = COALESCE(#{dataSourceConfig}, data_source_config),
-      data_binding       = COALESCE(#{dataBinding},      data_binding),
+      data_source_type   = COALESCE(#{data_source_type},   data_source_type),
+      data_source_config = COALESCE(#{data_source_config}, data_source_config),
+      data_binding       = COALESCE(#{data_binding},      data_binding),
       memo               = COALESCE(#{memo},              memo),
       UPDATED_DATE         = NOW()
 
@@ -127,7 +127,7 @@
   <delete id="deleteYardPlacementsByLayoutId" parameterType="map">
     DELETE FROM yard_material_placement
 
-    WHERE yard_layout_id = #{yardLayoutId}
+    WHERE yard_layout_id = #{yard_layout_id}
   </delete>
 
 </mapper>
diff --git a/frontend/components/admin/AdvancedBatchModal.tsx b/frontend/components/admin/AdvancedBatchModal.tsx
index 54b86cbf..c00e2fc8 100644
--- a/frontend/components/admin/AdvancedBatchModal.tsx
+++ b/frontend/components/admin/AdvancedBatchModal.tsx
@@ -26,15 +26,15 @@ import { ExternalDbConnectionAPI } from "@/lib/api/externalDbConnection";
 
 // BatchJobModal에서 사용하던 config_json 구조 확장
 interface RestApiConfigJson {
-  sourceConnectionId?: number;
-  targetConnectionId?: number;
-  targetTable?: string;
+  source_connection_id?: number;
+  target_connection_id?: number;
+  target_table?: string;
   // REST API 관련 설정
-  apiUrl?: string;
-  apiKey?: string;
+  api_url?: string;
+  api_key?: string;
   endpoint?: string;
-  httpMethod?: string;
-  apiBody?: string; // POST 요청용 Body
+  http_method?: string;
+  api_body?: string; // POST 요청용 Body
   // 매핑 정보 등
   mappings?: any[];
 }
@@ -66,8 +66,8 @@ export default function AdvancedBatchModal({
 
   // 상세 설정 (config_json 내부 값) 관리
   const [configData, setConfigData] = useState<RestApiConfigJson>({
-    httpMethod: "GET", // 기본값
-    apiBody: "",
+    http_method: "GET", // 기본값
+    api_body: "",
   });
 
   const [isLoading, setIsLoading] = useState(false);
@@ -91,13 +91,13 @@ export default function AdvancedBatchModal({
         const savedConfig = job.config_json as RestApiConfigJson;
         setConfigData({
           ...savedConfig,
-          httpMethod: savedConfig.httpMethod || "GET",
-          apiBody: savedConfig.apiBody || "",
+          http_method: savedConfig.http_method || "GET",
+          api_body: savedConfig.api_body || "",
         });
 
         // 타겟 연결이 있으면 테이블 목록 로드
-        if (savedConfig.targetConnectionId) {
-          loadTables(savedConfig.targetConnectionId);
+        if (savedConfig.target_connection_id) {
+          loadTables(savedConfig.target_connection_id);
         }
       } else {
         // 생성 모드
@@ -110,8 +110,8 @@ export default function AdvancedBatchModal({
           config_json: {},
         });
         setConfigData({
-          httpMethod: "GET",
-          apiBody: "",
+          http_method: "GET",
+          api_body: "",
         });
       }
     }
@@ -158,13 +158,13 @@ export default function AdvancedBatchModal({
     }
 
     // REST API URL 필수 체크
-    if (!configData.apiUrl) {
+    if (!configData.api_url) {
       toast.error("API 서버 URL을 입력해주세요.");
       return;
     }
 
     // 타겟 DB 연결 필수 체크 (REST -> DB 인 경우)
-    if (formData.job_type === "rest_to_db" && !configData.targetConnectionId) {
+    if (formData.job_type === "rest_to_db" && !configData.target_connection_id) {
       toast.error("데이터를 저장할 대상 DB 연결을 선택해주세요.");
       return;
     }
@@ -283,8 +283,8 @@ export default function AdvancedBatchModal({
                 <Label htmlFor="api_url" className="text-xs">API 서버 URL *</Label>
                 <Input 
                   id="api_url"
-                  value={configData.apiUrl || ""}
-                  onChange={(e) => setConfigData(prev => ({ ...prev, apiUrl: e.target.value }))}
+                  value={configData.api_url || ""}
+                  onChange={(e) => setConfigData(prev => ({ ...prev, api_url: e.target.value }))}
                   placeholder="https://api.example.com"
                   className="mt-1"
                 />
@@ -295,8 +295,8 @@ export default function AdvancedBatchModal({
                 <Input 
                   id="api_key"
                   type="password"
-                  value={configData.apiKey || ""}
-                  onChange={(e) => setConfigData(prev => ({ ...prev, apiKey: e.target.value }))}
+                  value={configData.api_key || ""}
+                  onChange={(e) => setConfigData(prev => ({ ...prev, api_key: e.target.value }))}
                   placeholder="인증에 필요한 API Key가 있다면 입력하세요"
                   className="mt-1"
                 />
@@ -315,9 +315,9 @@ export default function AdvancedBatchModal({
 
               <div>
                 <Label htmlFor="http_method" className="text-xs">HTTP 메서드</Label>
-                <Select 
-                  value={configData.httpMethod || "GET"} 
-                  onValueChange={(val) => setConfigData(prev => ({ ...prev, httpMethod: val }))}
+                <Select
+                  value={configData.http_method || "GET"}
+                  onValueChange={(val) => setConfigData(prev => ({ ...prev, http_method: val }))}
                 >
                   <SelectTrigger className="mt-1">
                     <SelectValue />
@@ -332,13 +332,13 @@ export default function AdvancedBatchModal({
               </div>
 
               {/* POST/PUT 일 때 Body 입력창 노출 */}
-              {(configData.httpMethod === "POST" || configData.httpMethod === "PUT") && (
+              {(configData.http_method === "POST" || configData.http_method === "PUT") && (
                 <div className="sm:col-span-2 animate-in fade-in slide-in-from-top-2 duration-200">
                   <Label htmlFor="api_body" className="text-xs">Request Body (JSON)</Label>
-                  <Textarea 
+                  <Textarea
                     id="api_body"
-                    value={configData.apiBody || ""}
-                    onChange={(e) => setConfigData(prev => ({ ...prev, apiBody: e.target.value }))}
+                    value={configData.api_body || ""}
+                    onChange={(e) => setConfigData(prev => ({ ...prev, api_body: e.target.value }))}
                     placeholder='{"username": "myuser", "password": "mypassword"}'
                     className="mt-1 font-mono text-xs min-h-[100px]"
                   />
@@ -362,11 +362,11 @@ export default function AdvancedBatchModal({
             <div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
               <div>
                 <Label className="text-xs">데이터베이스 커넥션 선택</Label>
-                <Select 
-                  value={configData.targetConnectionId?.toString() || ""}
+                <Select
+                  value={configData.target_connection_id?.toString() || ""}
                   onValueChange={(val) => {
                     const connId = parseInt(val);
-                    setConfigData(prev => ({ ...prev, targetConnectionId: connId }));
+                    setConfigData(prev => ({ ...prev, target_connection_id: connId }));
                     loadTables(connId); // 테이블 목록 로드
                   }}
                 >
@@ -386,9 +386,9 @@ export default function AdvancedBatchModal({
               <div>
                 <Label className="text-xs">테이블 선택</Label>
                 <Select 
-                  value={configData.targetTable || ""}
-                  onValueChange={(val) => setConfigData(prev => ({ ...prev, targetTable: val }))}
-                  disabled={!configData.targetConnectionId}
+                  value={configData.target_table || ""}
+                  onValueChange={(val) => setConfigData(prev => ({ ...prev, target_table: val }))}
+                  disabled={!configData.target_connection_id}
                 >
                   <SelectTrigger className="mt-1">
                     <SelectValue placeholder="테이블을 선택하세요" />
diff --git a/frontend/components/admin/UserFormModal.tsx b/frontend/components/admin/UserFormModal.tsx
index eef0c538..3d1b2982 100644
--- a/frontend/components/admin/UserFormModal.tsx
+++ b/frontend/components/admin/UserFormModal.tsx
@@ -122,16 +122,16 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
     setAlertModal((prev) => ({ ...prev, isOpen: false }));
   };
   const [formData, setFormData] = useState({
-    userId: "",
-    userPassword: "",
-    userName: "",
+    user_id: "",
+    user_password: "",
+    user_name: "",
     email: "",
     tel: "",
-    cellPhone: "",
-    positionName: "",
-    companyCode: "",
-    deptCode: "",
-    userType: "USER", // 기본값: 일반 사용자
+    cell_phone: "",
+    position_name: "",
+    company_code: "",
+    dept_code: "",
+    user_type: "USER", // 기본값: 일반 사용자
     sabun: null, // 항상 null로 설정
   });
 
@@ -145,12 +145,12 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
   const isFormValid = useMemo(() => {
     // 수정 모드에서는 비밀번호 선택 사항 (변경할 경우만 입력)
     const requiredFields = isEditMode
-      ? [formData.userId.trim(), formData.userName.trim(), formData.companyCode]
+      ? [formData.user_id.trim(), formData.user_name.trim(), formData.company_code]
       : [
-          formData.userId.trim(),
-          formData.userPassword.trim(),
-          formData.userName.trim(),
-          formData.companyCode,
+          formData.user_id.trim(),
+          formData.user_password.trim(),
+          formData.user_name.trim(),
+          formData.company_code,
         ];
 
     // 모든 필수 필드가 입력되었는지 확인
@@ -158,7 +158,7 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
 
     // 수정 모드: ID 중복체크 불필요 (이미 존재하는 사용자)
     // 등록 모드: ID 중복체크 필수
-    const duplicateCheckValid = isEditMode || (isUserIdChecked && lastCheckedUserId === formData.userId);
+    const duplicateCheckValid = isEditMode || (isUserIdChecked && lastCheckedUserId === formData.user_id);
 
     return allFieldsFilled && duplicateCheckValid;
   }, [formData, isUserIdChecked, lastCheckedUserId, isEditMode]);
@@ -197,34 +197,34 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
       // 수정 모드: 기존 사용자 정보 로드
       if (isEditMode && editingUser) {
         setFormData({
-          userId: editingUser.userId || "",
-          userPassword: "", // 수정 시 비밀번호는 비워둠 (변경 원할 경우만 입력)
-          userName: editingUser.userName || "",
+          user_id: editingUser.user_id || "",
+          user_password: "", // 수정 시 비밀번호는 비워둠 (변경 원할 경우만 입력)
+          user_name: editingUser.user_name || "",
           email: editingUser.email || "",
           tel: editingUser.tel || "",
-          cellPhone: editingUser.cellPhone || "",
-          positionName: editingUser.positionName || "",
-          companyCode: editingUser.companyCode || "",
-          deptCode: editingUser.deptCode || "",
-          userType: editingUser.userType || "USER",
+          cell_phone: editingUser.cell_phone || "",
+          position_name: editingUser.position_name || "",
+          company_code: editingUser.company_code || "",
+          dept_code: editingUser.dept_code || "",
+          user_type: editingUser.user_type || "USER",
           sabun: editingUser.sabun || null,
         });
         // 수정 모드에서는 ID 중복체크 불필요
         setIsUserIdChecked(true);
-        setLastCheckedUserId(editingUser.userId);
+        setLastCheckedUserId(editingUser.user_id);
       } else {
         // 등록 모드: 폼 초기화
         setFormData({
-          userId: "",
-          userPassword: "",
-          userName: "",
+          user_id: "",
+          user_password: "",
+          user_name: "",
           email: "",
           tel: "",
-          cellPhone: "",
-          positionName: "",
-          companyCode: "",
-          deptCode: "",
-          userType: "USER",
+          cell_phone: "",
+          position_name: "",
+          company_code: "",
+          dept_code: "",
+          user_type: "USER",
           sabun: null,
         });
         setIsUserIdChecked(false);
@@ -237,17 +237,17 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
 
   // 회사 선택 시 부서 목록 업데이트
   useEffect(() => {
-    if (formData.companyCode) {
-      loadDepartments(formData.companyCode);
+    if (formData.company_code) {
+      loadDepartments(formData.company_code);
       // 회사 변경 시 부서 선택 초기화
-      setFormData((prev) => ({ ...prev, deptCode: "" }));
+      setFormData((prev) => ({ ...prev, dept_code: "" }));
     }
-  }, [formData.companyCode, loadDepartments]);
+  }, [formData.company_code, loadDepartments]);
 
   // 폼 데이터 변경 핸들러 (useCallback 제거 - 의존성이 없고 성능상 이점 없음)
   const handleInputChange = (field: string, value: string) => {
     // userId가 변경되면 중복체크 상태 초기화
-    if (field === "userId") {
+    if (field === "user_id") {
       setIsUserIdChecked(false);
       setLastCheckedUserId("");
       setDuplicateCheckMessage("");
@@ -262,23 +262,23 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
 
   // 사용자 ID 중복 체크
   const checkUserIdDuplicate = async () => {
-    if (!formData.userId.trim()) {
+    if (!formData.user_id.trim()) {
       setDuplicateCheckMessage("사용자 ID를 입력해주세요.");
       setDuplicateCheckType("error");
       return;
     }
 
     try {
-      const response = await userAPI.checkDuplicateId(formData.userId);
+      const response = await userAPI.checkDuplicateId(formData.user_id);
       if (response.success && response.data) {
-        // 백엔드 API 응답 구조: { isDuplicate: boolean, message: string }
-        const isDuplicate = response.data.isDuplicate;
+        // 백엔드 API 응답 구조: { is_duplicate: boolean, message: string }
+        const isDuplicate = response.data.is_duplicate;
         const message = response.data.message;
 
         if (!isDuplicate) {
           // 중복되지 않음 (사용 가능)
           setIsUserIdChecked(true);
-          setLastCheckedUserId(formData.userId);
+          setLastCheckedUserId(formData.user_id);
           setDuplicateCheckMessage(message || "사용 가능한 사용자 ID입니다.");
           setDuplicateCheckType("success");
         } else {
@@ -300,28 +300,28 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
 
   // 유효성 검사
   const validateForm = useCallback(() => {
-    if (!formData.userId.trim()) {
+    if (!formData.user_id.trim()) {
       showAlert("입력 오류", "사용자 ID를 입력해주세요.", "error");
       return false;
     }
 
     // ID 중복체크 필수 검증
-    if (!isUserIdChecked || lastCheckedUserId !== formData.userId) {
+    if (!isUserIdChecked || lastCheckedUserId !== formData.user_id) {
       showAlert("중복체크 필요", "사용자 ID 중복체크를 먼저 진행해주세요.", "error");
       return false;
     }
 
-    if (!formData.userPassword.trim()) {
+    if (!formData.user_password.trim()) {
       showAlert("입력 오류", "비밀번호를 입력해주세요.", "error");
       return false;
     }
 
-    if (!formData.userName.trim()) {
+    if (!formData.user_name.trim()) {
       showAlert("입력 오류", "사용자명을 입력해주세요.", "error");
       return false;
     }
 
-    if (!formData.companyCode) {
+    if (!formData.company_code) {
       showAlert("입력 오류", "회사를 선택해주세요.", "error");
       return false;
     }
@@ -345,16 +345,16 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
 
     try {
       const userDataToSend = {
-        userId: formData.userId,
-        userPassword: formData.userPassword,
-        userName: formData.userName,
+        user_id: formData.user_id,
+        user_password: formData.user_password,
+        user_name: formData.user_name,
         email: formData.email || null,
         tel: formData.tel || null,
-        cellPhone: formData.cellPhone || null,
-        positionName: formData.positionName || null,
-        companyCode: formData.companyCode,
-        deptCode: formData.deptCode || null,
-        userType: formData.userType, // 권한 타입 추가
+        cell_phone: formData.cell_phone || null,
+        position_name: formData.position_name || null,
+        company_code: formData.company_code,
+        dept_code: formData.dept_code || null,
+        user_type: formData.user_type, // 권한 타입 추가
         sabun: null, // 항상 null (테이블 1번 컬럼)
         status: "active", // 기본값 (테이블 18번 컬럼)
       };
@@ -363,7 +363,7 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
       if (isEditMode) {
         // 수정 모드: 비밀번호 필드 제외 (비밀번호 초기화 기능 별도 제공)
         const updateData = { ...userDataToSend };
-        delete updateData.userPassword;
+        delete updateData.user_password;
         response = await userAPI.update(updateData);
       } else {
         // 등록 모드
@@ -403,15 +403,16 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
   // 모달 닫기
   const handleClose = useCallback(() => {
     setFormData({
-      userId: "",
-      userPassword: "",
-      userName: "",
+      user_id: "",
+      user_password: "",
+      user_name: "",
       email: "",
       tel: "",
-      cellPhone: "",
-      positionName: "",
-      companyCode: "",
-      deptCode: "",
+      cell_phone: "",
+      position_name: "",
+      company_code: "",
+      dept_code: "",
+      user_type: "USER",
       sabun: null,
     });
     setShowPassword(false);
@@ -449,26 +450,26 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
                   사용자 ID <span className="text-destructive">*</span>
                 </Label>
                 {isEditMode ? (
-                  <Input id="userId" value={formData.userId} disabled className="bg-muted cursor-not-allowed" />
+                  <Input id="userId" value={formData.user_id} disabled className="bg-muted cursor-not-allowed" />
                 ) : (
                   <>
                     <div className="flex gap-2">
                       <Input
                         id="userId"
                         placeholder="사용자 ID 입력"
-                        value={formData.userId}
-                        onChange={(e) => handleInputChange("userId", e.target.value)}
+                        value={formData.user_id}
+                        onChange={(e) => handleInputChange("user_id", e.target.value)}
                         onKeyDown={handleKeyDown}
                         className="flex-1"
                       />
                       <Button
                         type="button"
-                        variant={isUserIdChecked && lastCheckedUserId === formData.userId ? "default" : "outline"}
+                        variant={isUserIdChecked && lastCheckedUserId === formData.user_id ? "default" : "outline"}
                         onClick={checkUserIdDuplicate}
-                        disabled={!formData.userId.trim() || isLoading}
+                        disabled={!formData.user_id.trim() || isLoading}
                         className="whitespace-nowrap"
                       >
-                        {isUserIdChecked && lastCheckedUserId === formData.userId ? "확인완료" : "중복확인"}
+                        {isUserIdChecked && lastCheckedUserId === formData.user_id ? "확인완료" : "중복확인"}
                       </Button>
                     </div>
                     {/* 중복확인 결과 메시지 */}
@@ -490,8 +491,8 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
                 <Input
                   id="userName"
                   placeholder="사용자명 입력"
-                  value={formData.userName}
-                  onChange={(e) => handleInputChange("userName", e.target.value)}
+                  value={formData.user_name}
+                  onChange={(e) => handleInputChange("user_name", e.target.value)}
                   onKeyDown={handleKeyDown}
                 />
               </div>
@@ -508,8 +509,8 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
                     id="userPassword"
                     type={showPassword ? "text" : "password"}
                     placeholder="비밀번호 입력"
-                    value={formData.userPassword}
-                    onChange={(e) => handleInputChange("userPassword", e.target.value)}
+                    value={formData.user_password}
+                    onChange={(e) => handleInputChange("user_password", e.target.value)}
                     onKeyDown={handleKeyDown}
                     className="pr-10"
                   />
@@ -537,8 +538,8 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
               {isSuperAdmin ? (
                 <>
                   <Select
-                    value={formData.companyCode}
-                    onValueChange={(value) => handleInputChange("companyCode", value)}
+                    value={formData.company_code}
+                    onValueChange={(value) => handleInputChange("company_code", value)}
                   >
                     <SelectTrigger>
                       <SelectValue placeholder="회사 선택" />
@@ -560,8 +561,8 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
                   <Input
                     id="companyCode"
                     value={
-                      companies.find((c) => c.company_code === formData.companyCode)?.company_name ||
-                      formData.companyCode
+                      companies.find((c) => c.company_code === formData.company_code)?.company_name ||
+                      formData.company_code
                     }
                     disabled
                     className="bg-muted cursor-not-allowed"
@@ -577,7 +578,7 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
                 <Label htmlFor="deptCode" className="text-sm font-medium">
                   부서
                 </Label>
-                <Select value={formData.deptCode} onValueChange={(value) => handleInputChange("deptCode", value)}>
+                <Select value={formData.dept_code} onValueChange={(value) => handleInputChange("dept_code", value)}>
                   <SelectTrigger>
                     <SelectValue placeholder="부서 선택" />
                   </SelectTrigger>
@@ -648,8 +649,8 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
                 <Input
                   id="cellPhone"
                   placeholder="휴대폰 번호 입력 (선택사항)"
-                  value={formData.cellPhone}
-                  onChange={(e) => handleInputChange("cellPhone", e.target.value)}
+                  value={formData.cell_phone}
+                  onChange={(e) => handleInputChange("cell_phone", e.target.value)}
                   onKeyDown={handleKeyDown}
                 />
               </div>
@@ -661,8 +662,8 @@ export function UserFormModal({ isOpen, onClose, onSuccess, editingUser }: UserF
                 <Input
                   id="positionName"
                   placeholder="직책명 입력 (선택사항)"
-                  value={formData.positionName}
-                  onChange={(e) => handleInputChange("positionName", e.target.value)}
+                  value={formData.position_name}
+                  onChange={(e) => handleInputChange("position_name", e.target.value)}
                   onKeyDown={handleKeyDown}
                 />
               </div>
diff --git a/frontend/components/admin/dashboard/data-sources/ApiConfig.tsx b/frontend/components/admin/dashboard/data-sources/ApiConfig.tsx
index b7ba7f77..562ff80d 100644
--- a/frontend/components/admin/dashboard/data-sources/ApiConfig.tsx
+++ b/frontend/components/admin/dashboard/data-sources/ApiConfig.tsx
@@ -147,7 +147,7 @@ export function ApiConfig({ dataSource, onChange, onTestResult }: ApiConfigProps
     }
     
     // 외부 커넥션 ID 저장 (백엔드에서 인증 정보 조회용)
-    updates.externalConnectionId = connection.id;
+    updates.external_connection_id = connection.id;
     
     console.log("최종 업데이트:", updates);
 
@@ -190,10 +190,10 @@ export function ApiConfig({ dataSource, onChange, onTestResult }: ApiConfigProps
 
   // 쿼리 파라미터를 배열로 정규화 (객체 형식 호환)
   const normalizeQueryParams = (): KeyValuePair[] => {
-    if (!dataSource.queryParams) return [];
-    if (Array.isArray(dataSource.queryParams)) return dataSource.queryParams;
+    if (!dataSource.query_params) return [];
+    if (Array.isArray(dataSource.query_params)) return dataSource.query_params;
     // 객체 형식이면 배열로 변환
-    return Object.entries(dataSource.queryParams as Record<string, string>).map(([key, value]) => ({
+    return Object.entries(dataSource.query_params as Record<string, string>).map(([key, value]) => ({
       id: `param_${Date.now()}_${Math.random()}`,
       key,
       value,
@@ -204,21 +204,21 @@ export function ApiConfig({ dataSource, onChange, onTestResult }: ApiConfigProps
   const addQueryParam = () => {
     const queryParams = normalizeQueryParams();
     onChange({
-      queryParams: [...queryParams, { id: `param_${Date.now()}`, key: "", value: "" }],
+      query_params: [...queryParams, { id: `param_${Date.now()}`, key: "", value: "" }],
     });
   };
 
   // 쿼리 파라미터 제거
   const removeQueryParam = (id: string) => {
     const queryParams = normalizeQueryParams();
-    onChange({ queryParams: queryParams.filter((p) => p.id !== id) });
+    onChange({ query_params: queryParams.filter((p) => p.id !== id) });
   };
 
   // 쿼리 파라미터 업데이트
   const updateQueryParam = (id: string, updates: Partial<KeyValuePair>) => {
     const queryParams = normalizeQueryParams();
     onChange({
-      queryParams: queryParams.map((p) => (p.id === id ? { ...p, ...updates } : p)),
+      query_params: queryParams.map((p) => (p.id === id ? { ...p, ...updates } : p)),
     });
   };
 
@@ -286,9 +286,9 @@ export function ApiConfig({ dataSource, onChange, onTestResult }: ApiConfigProps
           url: dataSource.endpoint,
           method: requestMethod,
           headers: headers,
-          queryParams: params,
+          query_params: params,
           body: requestBody,
-          externalConnectionId: dataSource.externalConnectionId, // DB 토큰 등 인증 정보 조회용
+          external_connection_id: dataSource.external_connection_id, // DB 토큰 등 인증 정보 조회용
         }),
       });
 
@@ -335,12 +335,12 @@ export function ApiConfig({ dataSource, onChange, onTestResult }: ApiConfigProps
 
       // JSON Path 처리
       let data = apiData;
-      if (dataSource.jsonPath) {
-        const paths = dataSource.jsonPath.split(".");
+      if (dataSource.json_path) {
+        const paths = dataSource.json_path.split(".");
         for (const path of paths) {
           // 배열인 경우 인덱스 접근, 객체인 경우 키 접근
           if (data === null || data === undefined) {
-            throw new Error(`JSON Path "${dataSource.jsonPath}"에서 데이터를 찾을 수 없습니다 (null/undefined)`);
+            throw new Error(`JSON Path "${dataSource.json_path}"에서 데이터를 찾을 수 없습니다 (null/undefined)`);
           }
           
           if (Array.isArray(data)) {
@@ -349,12 +349,12 @@ export function ApiConfig({ dataSource, onChange, onTestResult }: ApiConfigProps
             if (!isNaN(index) && index >= 0 && index < data.length) {
               data = data[index];
             } else {
-              throw new Error(`JSON Path "${dataSource.jsonPath}"에서 배열 인덱스 "${path}"를 찾을 수 없습니다`);
+              throw new Error(`JSON Path "${dataSource.json_path}"에서 배열 인덱스 "${path}"를 찾을 수 없습니다`);
             }
           } else if (typeof data === "object" && path in data) {
             data = (data as Record<string, any>)[path];
           } else {
-            throw new Error(`JSON Path "${dataSource.jsonPath}"에서 "${path}" 키를 찾을 수 없습니다`);
+            throw new Error(`JSON Path "${dataSource.json_path}"에서 "${path}" 키를 찾을 수 없습니다`);
           }
         }
       }
@@ -614,8 +614,8 @@ export function ApiConfig({ dataSource, onChange, onTestResult }: ApiConfigProps
         <Label className="text-xs font-medium text-foreground">JSON Path (선택)</Label>
         <Input
           placeholder="data.results"
-          value={dataSource.jsonPath || ""}
-          onChange={(e) => onChange({ jsonPath: e.target.value })}
+          value={dataSource.json_path || ""}
+          onChange={(e) => onChange({ json_path: e.target.value })}
         />
         <p className="text-[11px] text-muted-foreground">
           JSON 응답에서 데이터 배열의 경로 (예: data.results, items, response.data)
@@ -628,8 +628,8 @@ export function ApiConfig({ dataSource, onChange, onTestResult }: ApiConfigProps
       <div className="space-y-1.5">
         <Label className="text-xs font-medium text-foreground">자동 새로고침 간격</Label>
         <Select
-          value={(dataSource.refreshInterval || 0).toString()}
-          onValueChange={(value) => onChange({ refreshInterval: parseInt(value) })}
+          value={(dataSource.refresh_interval || 0).toString()}
+          onValueChange={(value) => onChange({ refresh_interval: parseInt(value) })}
         >
           <SelectTrigger className="h-8 text-xs">
             <SelectValue placeholder="간격 선택" />
diff --git a/frontend/components/admin/dashboard/data-sources/MultiApiConfig.tsx b/frontend/components/admin/dashboard/data-sources/MultiApiConfig.tsx
index f92e440a..fcabdbbf 100644
--- a/frontend/components/admin/dashboard/data-sources/MultiApiConfig.tsx
+++ b/frontend/components/admin/dashboard/data-sources/MultiApiConfig.tsx
@@ -22,7 +22,7 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
   const [testing, setTesting] = useState(false);
   const [testResult, setTestResult] = useState<{ success: boolean; message: string } | null>(null);
   const [apiConnections, setApiConnections] = useState<ExternalApiConnection[]>([]);
-  const [selectedConnectionId, setSelectedConnectionId] = useState<string>(dataSource.externalConnectionId || "");
+  const [selectedConnectionId, setSelectedConnectionId] = useState<string>(dataSource.external_connection_id || "");
   const [availableColumns, setAvailableColumns] = useState<string[]>([]); // API 테스트 후 발견된 컬럼 목록
   const [columnTypes, setColumnTypes] = useState<Record<string, string>>({}); // 컬럼 타입 정보
   const [sampleData, setSampleData] = useState<any[]>([]); // 샘플 데이터 (최대 3개)
@@ -37,12 +37,12 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
     loadApiConnections();
   }, []);
 
-  // dataSource.externalConnectionId가 변경되면 selectedConnectionId 업데이트
+  // dataSource.external_connection_id가 변경되면 selectedConnectionId 업데이트
   useEffect(() => {
-    if (dataSource.externalConnectionId) {
-      setSelectedConnectionId(dataSource.externalConnectionId);
+    if (dataSource.external_connection_id) {
+      setSelectedConnectionId(dataSource.external_connection_id);
     }
-  }, [dataSource.externalConnectionId]);
+  }, [dataSource.external_connection_id]);
 
   // 외부 커넥션 선택 핸들러
   const handleConnectionSelect = async (connectionId: string) => {
@@ -67,7 +67,7 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
 
     const updates: Partial<ChartDataSource> = {
       endpoint: fullEndpoint,
-      externalConnectionId: connectionId, // 외부 연결 ID 저장
+      external_connection_id: connectionId, // 외부 연결 ID 저장
     };
 
     const headers: KeyValuePair[] = [];
@@ -153,7 +153,7 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
       updates.headers = headers;
     }
     if (queryParams.length > 0) {
-      updates.queryParams = queryParams;
+      updates.query_params = queryParams;
     }
 
     onChange(updates);
@@ -183,24 +183,24 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
 
   // 쿼리 파라미터 추가
   const handleAddQueryParam = () => {
-    const queryParams = dataSource.queryParams || [];
+    const queryParams = dataSource.query_params || [];
     onChange({
-      queryParams: [...queryParams, { id: Date.now().toString(), key: "", value: "" }],
+      query_params: [...queryParams, { id: Date.now().toString(), key: "", value: "" }],
     });
   };
 
   // 쿼리 파라미터 삭제
   const handleDeleteQueryParam = (id: string) => {
-    const queryParams = (dataSource.queryParams || []).filter((q) => q.id !== id);
-    onChange({ queryParams });
+    const queryParams = (dataSource.query_params || []).filter((q) => q.id !== id);
+    onChange({ query_params: queryParams });
   };
 
   // 쿼리 파라미터 업데이트
   const handleUpdateQueryParam = (id: string, field: "key" | "value", value: string) => {
-    const queryParams = (dataSource.queryParams || []).map((q) =>
+    const queryParams = (dataSource.query_params || []).map((q) =>
       q.id === id ? { ...q, [field]: value } : q
     );
-    onChange({ queryParams });
+    onChange({ query_params: queryParams });
   };
 
   // API 테스트
@@ -215,7 +215,7 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
 
     try {
       const queryParams: Record<string, string> = {};
-      (dataSource.queryParams || []).forEach((param) => {
+      (dataSource.query_params || []).forEach((param) => {
         if (param.key && param.value) {
           queryParams[param.key] = param.value;
         }
@@ -241,9 +241,9 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
           url: dataSource.endpoint,
           method: dataSource.method || "GET",
           headers,
-          queryParams,
+          query_params: queryParams,
           body: bodyPayload,
-          externalConnectionId: dataSource.externalConnectionId, // 외부 연결 ID 전달
+          external_connection_id: dataSource.external_connection_id, // 외부 연결 ID 전달
         }),
       });
 
@@ -306,8 +306,8 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
           if (parsedData.length > 0) {
             data = parsedData;
           }
-        } else if (dataSource.jsonPath) {
-          const pathParts = dataSource.jsonPath.split(".");
+        } else if (dataSource.json_path) {
+          const pathParts = dataSource.json_path.split(".");
           for (const part of pathParts) {
             data = data?.[part];
           }
@@ -499,8 +499,8 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
         </Label>
         <Input
           id={`jsonPath-\${dataSource.id}`}
-          value={dataSource.jsonPath || ""}
-          onChange={(e) => onChange({ jsonPath: e.target.value })}
+          value={dataSource.json_path || ""}
+          onChange={(e) => onChange({ json_path: e.target.value })}
           placeholder="예: data.results"
           className="h-8 text-xs"
         />
@@ -523,7 +523,7 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
             추가
           </Button>
         </div>
-        {(dataSource.queryParams || []).map((param) => (
+        {(dataSource.query_params || []).map((param) => (
           <div key={param.id} className="flex gap-2">
             <Input
               value={param.key}
@@ -596,8 +596,8 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
           마커 종류
         </Label>
         <Select
-          value={dataSource.markerType || "circle"}
-          onValueChange={(value) => onChange({ markerType: value })}
+          value={dataSource.marker_type || "circle"}
+          onValueChange={(value) => onChange({ marker_type: value })}
         >
           <SelectTrigger id="marker-type" className="h-9 text-xs">
             <SelectValue placeholder="마커 선택" />
@@ -631,15 +631,15 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
               { name: "청록", marker: "#06b6d4", polygon: "#06b6d4" },
               { name: "분홍", marker: "#ec4899", polygon: "#ec4899" },
             ].map((color) => {
-              const isSelected = dataSource.markerColor === color.marker;
+              const isSelected = dataSource.marker_color === color.marker;
               return (
                 <button
                   key={color.name}
                   type="button"
-                  onClick={() => onChange({ 
-                    markerColor: color.marker, 
-                    polygonColor: color.polygon,
-                    polygonOpacity: 0.5,
+                  onClick={() => onChange({
+                    marker_color: color.marker,
+                    polygon_color: color.polygon,
+                    polygon_opacity: 0.5,
                   })}
                   className={`flex h-16 flex-col items-center justify-center gap-1 rounded-md border-2 transition-all hover:scale-105 ${
                     isSelected 
@@ -706,8 +706,8 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
             <div>
               <Label className="text-sm font-semibold">메트릭 컬럼 선택</Label>
               <p className="text-xs text-muted-foreground mt-0.5">
-                {dataSource.selectedColumns && dataSource.selectedColumns.length > 0
-                  ? `${dataSource.selectedColumns.length}개 컬럼 선택됨`
+                {dataSource.selected_columns && dataSource.selected_columns.length > 0
+                  ? `${dataSource.selected_columns.length}개 컬럼 선택됨`
                   : "모든 컬럼 표시"}
               </p>
             </div>
@@ -715,7 +715,7 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
               <Button
                 variant="outline"
                 size="sm"
-                onClick={() => onChange({ selectedColumns: availableColumns })}
+                onClick={() => onChange({ selected_columns: availableColumns })}
                 className="h-7 text-xs"
               >
                 전체
@@ -723,7 +723,7 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
               <Button
                 variant="outline"
                 size="sm"
-                onClick={() => onChange({ selectedColumns: [] })}
+                onClick={() => onChange({ selected_columns: [] })}
                 className="h-7 text-xs"
               >
                 해제
@@ -750,9 +750,9 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
               )
               .map((col) => {
                 const isSelected = 
-                  !dataSource.selectedColumns || 
-                  dataSource.selectedColumns.length === 0 || 
-                  dataSource.selectedColumns.includes(col);
+                  !dataSource.selected_columns || 
+                  dataSource.selected_columns.length === 0 || 
+                  dataSource.selected_columns.includes(col);
                 
                 const type = columnTypes[col] || "unknown";
                 const typeIcon = {
@@ -777,15 +777,15 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
                   <div
                     key={col}
                     onClick={() => {
-                      const currentSelected = dataSource.selectedColumns && dataSource.selectedColumns.length > 0
-                        ? dataSource.selectedColumns
+                      const currentSelected = dataSource.selected_columns && dataSource.selected_columns.length > 0
+                        ? dataSource.selected_columns
                         : availableColumns;
                       
                       const newSelected = isSelected
                         ? currentSelected.filter(c => c !== col)
                         : [...currentSelected, col];
                       
-                      onChange({ selectedColumns: newSelected });
+                      onChange({ selected_columns: newSelected });
                     }}
                     className={`
                       relative flex items-start gap-3 rounded-lg border p-3 cursor-pointer transition-all
@@ -863,8 +863,8 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
         </div>
         <Switch
           id="save-to-history"
-          checked={dataSource.saveToHistory || false}
-          onCheckedChange={(checked) => onChange({ saveToHistory: checked })}
+          checked={dataSource.save_to_history || false}
+          onCheckedChange={(checked) => onChange({ save_to_history: checked })}
         />
       </div>
 
@@ -878,11 +878,11 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
                 다른 데이터 소스와 통합할 때 컬럼명을 통일할 수 있습니다
               </p>
             </div>
-            {dataSource.columnMapping && Object.keys(dataSource.columnMapping).length > 0 && (
+            {dataSource.column_mapping && Object.keys(dataSource.column_mapping).length > 0 && (
               <Button
                 variant="ghost"
                 size="sm"
-                onClick={() => onChange({ columnMapping: {} })}
+                onClick={() => onChange({ column_mapping: {} })}
                 className="h-7 text-xs"
               >
                 초기화
@@ -891,9 +891,9 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
           </div>
 
           {/* 매핑 목록 */}
-          {dataSource.columnMapping && Object.keys(dataSource.columnMapping).length > 0 && (
+          {dataSource.column_mapping && Object.keys(dataSource.column_mapping).length > 0 && (
             <div className="space-y-2">
-              {Object.entries(dataSource.columnMapping).map(([original, mapped]) => (
+              {Object.entries(dataSource.column_mapping).map(([original, mapped]) => (
                 <div key={original} className="flex items-center gap-2">
                   {/* 원본 컬럼 (읽기 전용) */}
                   <Input
@@ -909,9 +909,9 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
                   <Input
                     value={mapped}
                     onChange={(e) => {
-                      const newMapping = { ...dataSource.columnMapping };
+                      const newMapping = { ...dataSource.column_mapping };
                       newMapping[original] = e.target.value;
-                      onChange({ columnMapping: newMapping });
+                      onChange({ column_mapping: newMapping });
                     }}
                     placeholder="표시 이름"
                     className="h-8 flex-1 text-xs"
@@ -922,9 +922,9 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
                     variant="ghost"
                     size="sm"
                     onClick={() => {
-                      const newMapping = { ...dataSource.columnMapping };
+                      const newMapping = { ...dataSource.column_mapping };
                       delete newMapping[original];
-                      onChange({ columnMapping: newMapping });
+                      onChange({ column_mapping: newMapping });
                     }}
                     className="h-8 w-8 p-0"
                   >
@@ -939,9 +939,9 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
           <Select
             value=""
             onValueChange={(col) => {
-              const newMapping = { ...dataSource.columnMapping } || {};
+              const newMapping = { ...dataSource.column_mapping } || {};
               newMapping[col] = col; // 기본값은 원본과 동일
-              onChange({ columnMapping: newMapping });
+              onChange({ column_mapping: newMapping });
             }}
           >
             <SelectTrigger className="h-8 text-xs">
@@ -949,7 +949,7 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
             </SelectTrigger>
             <SelectContent>
               {availableColumns
-                .filter(col => !dataSource.columnMapping || !dataSource.columnMapping[col])
+                .filter(col => !dataSource.column_mapping || !dataSource.column_mapping[col])
                 .map(col => (
                   <SelectItem key={col} value={col} className="text-xs">
                     {col}
@@ -973,9 +973,9 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
           </Label>
 
           {/* 기존 팝업 필드 목록 */}
-          {dataSource.popupFields && dataSource.popupFields.length > 0 && (
+          {dataSource.popup_fields && dataSource.popup_fields.length > 0 && (
             <div className="space-y-3">
-              {dataSource.popupFields.map((field, index) => (
+              {dataSource.popup_fields.map((field, index) => (
                 <div key={index} className="space-y-2 rounded-lg border bg-muted/30 p-3">
                   <div className="flex items-center justify-between">
                     <span className="text-xs font-medium">필드 {index + 1}</span>
@@ -983,9 +983,9 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
                       variant="ghost"
                       size="sm"
                       onClick={() => {
-                        const newFields = [...(dataSource.popupFields || [])];
+                        const newFields = [...(dataSource.popup_fields || [])];
                         newFields.splice(index, 1);
-                        onChange({ popupFields: newFields });
+                        onChange({ popup_fields: newFields });
                       }}
                       className="h-6 w-6 p-0"
                     >
@@ -999,9 +999,9 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
                     <Select
                       value={field.fieldName}
                       onValueChange={(value) => {
-                        const newFields = [...(dataSource.popupFields || [])];
+                        const newFields = [...(dataSource.popup_fields || [])];
                         newFields[index].fieldName = value;
-                        onChange({ popupFields: newFields });
+                        onChange({ popup_fields: newFields });
                       }}
                     >
                       <SelectTrigger className="h-8 w-full text-xs">
@@ -1023,9 +1023,9 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
                     <Input
                       value={field.label || ""}
                       onChange={(e) => {
-                        const newFields = [...(dataSource.popupFields || [])];
+                        const newFields = [...(dataSource.popup_fields || [])];
                         newFields[index].label = e.target.value;
-                        onChange({ popupFields: newFields });
+                        onChange({ popup_fields: newFields });
                       }}
                       placeholder="예: 차량 번호"
                       className="h-8 w-full text-xs"
@@ -1039,9 +1039,9 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
                     <Select
                       value={field.format || "text"}
                       onValueChange={(value: "text" | "date" | "datetime" | "number" | "url") => {
-                        const newFields = [...(dataSource.popupFields || [])];
+                        const newFields = [...(dataSource.popup_fields || [])];
                         newFields[index].format = value;
-                        onChange({ popupFields: newFields });
+                        onChange({ popup_fields: newFields });
                       }}
                     >
                       <SelectTrigger className="h-8 w-full text-xs">
@@ -1066,13 +1066,13 @@ export default function MultiApiConfig({ dataSource, onChange, onTestResult }: M
             variant="outline"
             size="sm"
             onClick={() => {
-              const newFields = [...(dataSource.popupFields || [])];
+              const newFields = [...(dataSource.popup_fields || [])];
               newFields.push({
                 fieldName: availableColumns[0] || "",
                 label: "",
                 format: "text",
               });
-              onChange({ popupFields: newFields });
+              onChange({ popup_fields: newFields });
             }}
             className="h-8 w-full gap-2 text-xs"
             disabled={availableColumns.length === 0}
diff --git a/frontend/components/admin/dashboard/data-sources/MultiDatabaseConfig.tsx b/frontend/components/admin/dashboard/data-sources/MultiDatabaseConfig.tsx
index b8eb31ef..20b01203 100644
--- a/frontend/components/admin/dashboard/data-sources/MultiDatabaseConfig.tsx
+++ b/frontend/components/admin/dashboard/data-sources/MultiDatabaseConfig.tsx
@@ -34,10 +34,10 @@ export default function MultiDatabaseConfig({ dataSource, onChange, onTestResult
 
   // 외부 DB 커넥션 목록 로드
   useEffect(() => {
-    if (dataSource.connectionType === "external") {
+    if (dataSource.connection_type === "external") {
       loadExternalConnections();
     }
-  }, [dataSource.connectionType]);
+  }, [dataSource.connection_type]);
 
   const loadExternalConnections = async () => {
     setLoadingConnections(true);
@@ -76,11 +76,11 @@ export default function MultiDatabaseConfig({ dataSource, onChange, onTestResult
       // dashboardApi 사용 (인증 토큰 자동 포함)
       const { dashboardApi } = await import("@/lib/api/dashboard");
 
-      if (dataSource.connectionType === "external" && dataSource.externalConnectionId) {
+      if (dataSource.connection_type === "external" && dataSource.external_connection_id) {
         // 외부 DB
         const { ExternalDbConnectionAPI } = await import("@/lib/api/externalDbConnection");
         const result = await ExternalDbConnectionAPI.executeQuery(
-          parseInt(dataSource.externalConnectionId),
+          parseInt(dataSource.external_connection_id),
           dataSource.query,
         );
 
@@ -195,8 +195,8 @@ export default function MultiDatabaseConfig({ dataSource, onChange, onTestResult
       <div className="space-y-1">
         <Label className="text-xs">데이터베이스 연결</Label>
         <RadioGroup
-          value={dataSource.connectionType || "current"}
-          onValueChange={(value: "current" | "external") => onChange({ connectionType: value })}
+          value={dataSource.connection_type || "current"}
+          onValueChange={(value: "current" | "external") => onChange({ connection_type: value })}
         >
           <div className="flex items-center space-x-2">
             <RadioGroupItem value="current" id={`current-${dataSource.id}`} />
@@ -214,7 +214,7 @@ export default function MultiDatabaseConfig({ dataSource, onChange, onTestResult
       </div>
 
       {/* 외부 DB 선택 */}
-      {dataSource.connectionType === "external" && (
+      {dataSource.connection_type === "external" && (
         <div className="space-y-2">
           <Label htmlFor={`external-conn-${dataSource.id}`} className="text-xs">
             외부 데이터베이스 선택 *
@@ -225,8 +225,8 @@ export default function MultiDatabaseConfig({ dataSource, onChange, onTestResult
             </div>
           ) : (
             <Select
-              value={dataSource.externalConnectionId || ""}
-              onValueChange={(value) => onChange({ externalConnectionId: value })}
+              value={dataSource.external_connection_id || ""}
+              onValueChange={(value) => onChange({ external_connection_id: value })}
             >
               <SelectTrigger className="h-8 text-xs">
                 <SelectValue placeholder="외부 DB 선택" />
@@ -327,8 +327,8 @@ ORDER BY 하위부서수 DESC`,
           마커 종류
         </Label>
         <Select
-          value={dataSource.markerType || "circle"}
-          onValueChange={(value) => onChange({ markerType: value })}
+          value={dataSource.marker_type || "circle"}
+          onValueChange={(value) => onChange({ marker_type: value })}
         >
           <SelectTrigger id="marker-type" className="h-8 text-xs">
             <SelectValue placeholder="마커 선택" />
@@ -364,16 +364,16 @@ ORDER BY 하위부서수 DESC`,
             { name: "청록", marker: "#06b6d4", polygon: "#06b6d4" },
             { name: "분홍", marker: "#ec4899", polygon: "#ec4899" },
           ].map((color) => {
-            const isSelected = dataSource.markerColor === color.marker;
+            const isSelected = dataSource.marker_color === color.marker;
             return (
               <button
                 key={color.name}
                 type="button"
                 onClick={() =>
                   onChange({
-                    markerColor: color.marker,
-                    polygonColor: color.polygon,
-                    polygonOpacity: 0.5,
+                    marker_color: color.marker,
+                    polygon_color: color.polygon,
+                    polygon_opacity: 0.5,
                   })
                 }
                 className={`flex h-12 flex-col items-center justify-center gap-0.5 rounded-md border-2 transition-all hover:scale-105 ${
@@ -434,8 +434,8 @@ ORDER BY 하위부서수 DESC`,
             <div>
               <Label className="text-xs font-semibold">메트릭 컬럼 선택</Label>
               <p className="text-muted-foreground mt-0.5 text-[10px]">
-                {dataSource.selectedColumns && dataSource.selectedColumns.length > 0
-                  ? `${dataSource.selectedColumns.length}개 선택됨`
+                {dataSource.selected_columns && dataSource.selected_columns.length > 0
+                  ? `${dataSource.selected_columns.length}개 선택됨`
                   : "모든 컬럼 표시"}
               </p>
             </div>
@@ -443,7 +443,7 @@ ORDER BY 하위부서수 DESC`,
               <Button
                 variant="outline"
                 size="sm"
-                onClick={() => onChange({ selectedColumns: availableColumns })}
+                onClick={() => onChange({ selected_columns: availableColumns })}
                 className="h-6 px-2 text-xs"
               >
                 전체
@@ -451,7 +451,7 @@ ORDER BY 하위부서수 DESC`,
               <Button
                 variant="outline"
                 size="sm"
-                onClick={() => onChange({ selectedColumns: [] })}
+                onClick={() => onChange({ selected_columns: [] })}
                 className="h-6 px-2 text-xs"
               >
                 해제
@@ -475,9 +475,9 @@ ORDER BY 하위부서수 DESC`,
               .filter((col) => !columnSearchTerm || col.toLowerCase().includes(columnSearchTerm.toLowerCase()))
               .map((col) => {
                 const isSelected =
-                  !dataSource.selectedColumns ||
-                  dataSource.selectedColumns.length === 0 ||
-                  dataSource.selectedColumns.includes(col);
+                  !dataSource.selected_columns ||
+                  dataSource.selected_columns.length === 0 ||
+                  dataSource.selected_columns.includes(col);
 
                 const type = columnTypes[col] || "unknown";
                 const typeIcon = {
@@ -503,15 +503,15 @@ ORDER BY 하위부서수 DESC`,
                     key={col}
                     onClick={() => {
                       const currentSelected =
-                        dataSource.selectedColumns && dataSource.selectedColumns.length > 0
-                          ? dataSource.selectedColumns
+                        dataSource.selected_columns && dataSource.selected_columns.length > 0
+                          ? dataSource.selected_columns
                           : availableColumns;
 
                       const newSelected = isSelected
                         ? currentSelected.filter((c) => c !== col)
                         : [...currentSelected, col];
 
-                      onChange({ selectedColumns: newSelected });
+                      onChange({ selected_columns: newSelected });
                     }}
                     className={`relative flex cursor-pointer items-start gap-2 rounded-lg border p-2 transition-all ${
                       isSelected
@@ -588,17 +588,17 @@ ORDER BY 하위부서수 DESC`,
                 다른 데이터 소스와 통합할 때 컬럼명을 통일할 수 있습니다
               </p>
             </div>
-            {dataSource.columnMapping && Object.keys(dataSource.columnMapping).length > 0 && (
-              <Button variant="ghost" size="sm" onClick={() => onChange({ columnMapping: {} })} className="h-7 text-xs">
+            {dataSource.column_mapping && Object.keys(dataSource.column_mapping).length > 0 && (
+              <Button variant="ghost" size="sm" onClick={() => onChange({ column_mapping: {} })} className="h-7 text-xs">
                 초기화
               </Button>
             )}
           </div>
 
           {/* 매핑 목록 */}
-          {dataSource.columnMapping && Object.keys(dataSource.columnMapping).length > 0 && (
+          {dataSource.column_mapping && Object.keys(dataSource.column_mapping).length > 0 && (
             <div className="space-y-2">
-              {Object.entries(dataSource.columnMapping).map(([original, mapped]) => (
+              {Object.entries(dataSource.column_mapping).map(([original, mapped]) => (
                 <div key={original} className="flex items-center gap-2">
                   {/* 원본 컬럼 (읽기 전용) */}
                   <Input value={original} disabled className="bg-muted h-8 flex-1 text-xs" />
@@ -610,9 +610,9 @@ ORDER BY 하위부서수 DESC`,
                   <Input
                     value={mapped}
                     onChange={(e) => {
-                      const newMapping = { ...dataSource.columnMapping };
+                      const newMapping = { ...dataSource.column_mapping };
                       newMapping[original] = e.target.value;
-                      onChange({ columnMapping: newMapping });
+                      onChange({ column_mapping: newMapping });
                     }}
                     placeholder="표시 이름"
                     className="h-8 flex-1 text-xs"
@@ -623,9 +623,9 @@ ORDER BY 하위부서수 DESC`,
                     variant="ghost"
                     size="sm"
                     onClick={() => {
-                      const newMapping = { ...dataSource.columnMapping };
+                      const newMapping = { ...dataSource.column_mapping };
                       delete newMapping[original];
-                      onChange({ columnMapping: newMapping });
+                      onChange({ column_mapping: newMapping });
                     }}
                     className="h-8 w-8 p-0"
                   >
@@ -640,9 +640,9 @@ ORDER BY 하위부서수 DESC`,
           <Select
             value=""
             onValueChange={(col) => {
-              const newMapping = { ...dataSource.columnMapping } || {};
+              const newMapping = { ...dataSource.column_mapping } || {};
               newMapping[col] = col; // 기본값은 원본과 동일
-              onChange({ columnMapping: newMapping });
+              onChange({ column_mapping: newMapping });
             }}
           >
             <SelectTrigger className="h-8 text-xs">
@@ -650,7 +650,7 @@ ORDER BY 하위부서수 DESC`,
             </SelectTrigger>
             <SelectContent>
               {availableColumns
-                .filter((col) => !dataSource.columnMapping || !dataSource.columnMapping[col])
+                .filter((col) => !dataSource.column_mapping || !dataSource.column_mapping[col])
                 .map((col) => (
                   <SelectItem key={col} value={col} className="text-xs">
                     {col}
@@ -671,9 +671,9 @@ ORDER BY 하위부서수 DESC`,
           </Label>
 
           {/* 기존 팝업 필드 목록 */}
-          {dataSource.popupFields && dataSource.popupFields.length > 0 && (
+          {dataSource.popup_fields && dataSource.popup_fields.length > 0 && (
             <div className="space-y-3">
-              {dataSource.popupFields.map((field, index) => (
+              {dataSource.popup_fields.map((field, index) => (
                 <div key={index} className="bg-muted/30 space-y-2 rounded-lg border p-3">
                   <div className="flex items-center justify-between">
                     <span className="text-xs font-medium">필드 {index + 1}</span>
@@ -681,9 +681,9 @@ ORDER BY 하위부서수 DESC`,
                       variant="ghost"
                       size="sm"
                       onClick={() => {
-                        const newFields = [...(dataSource.popupFields || [])];
+                        const newFields = [...(dataSource.popup_fields || [])];
                         newFields.splice(index, 1);
-                        onChange({ popupFields: newFields });
+                        onChange({ popup_fields: newFields });
                       }}
                       className="h-6 w-6 p-0"
                     >
@@ -697,9 +697,9 @@ ORDER BY 하위부서수 DESC`,
                     <Select
                       value={field.fieldName}
                       onValueChange={(value) => {
-                        const newFields = [...(dataSource.popupFields || [])];
+                        const newFields = [...(dataSource.popup_fields || [])];
                         newFields[index].fieldName = value;
-                        onChange({ popupFields: newFields });
+                        onChange({ popup_fields: newFields });
                       }}
                     >
                       <SelectTrigger className="h-8 w-full text-xs">
@@ -721,9 +721,9 @@ ORDER BY 하위부서수 DESC`,
                     <Input
                       value={field.label || ""}
                       onChange={(e) => {
-                        const newFields = [...(dataSource.popupFields || [])];
+                        const newFields = [...(dataSource.popup_fields || [])];
                         newFields[index].label = e.target.value;
-                        onChange({ popupFields: newFields });
+                        onChange({ popup_fields: newFields });
                       }}
                       placeholder="예: 차량 번호"
                       className="h-8 w-full text-xs"
@@ -737,9 +737,9 @@ ORDER BY 하위부서수 DESC`,
                     <Select
                       value={field.format || "text"}
                       onValueChange={(value: "text" | "date" | "datetime" | "number" | "url") => {
-                        const newFields = [...(dataSource.popupFields || [])];
+                        const newFields = [...(dataSource.popup_fields || [])];
                         newFields[index].format = value;
-                        onChange({ popupFields: newFields });
+                        onChange({ popup_fields: newFields });
                       }}
                     >
                       <SelectTrigger className="h-8 w-full text-xs">
@@ -774,13 +774,13 @@ ORDER BY 하위부서수 DESC`,
             variant="outline"
             size="sm"
             onClick={() => {
-              const newFields = [...(dataSource.popupFields || [])];
+              const newFields = [...(dataSource.popup_fields || [])];
               newFields.push({
                 fieldName: availableColumns[0] || "",
                 label: "",
                 format: "text",
               });
-              onChange({ popupFields: newFields });
+              onChange({ popup_fields: newFields });
             }}
             className="h-8 w-full gap-2 text-xs"
             disabled={availableColumns.length === 0}
diff --git a/frontend/components/admin/dashboard/widgets/ListWidget.tsx b/frontend/components/admin/dashboard/widgets/ListWidget.tsx
index 0561a38d..04d8199e 100644
--- a/frontend/components/admin/dashboard/widgets/ListWidget.tsx
+++ b/frontend/components/admin/dashboard/widgets/ListWidget.tsx
@@ -343,8 +343,8 @@ export function ListWidget({ element, onConfigUpdate }: ListWidgetProps) {
         if (element.dataSource.type === "api" && element.dataSource.endpoint) {
           // REST API - 백엔드 프록시를 통한 호출
           const params = new URLSearchParams();
-          if (element.dataSource.queryParams) {
-            Object.entries(element.dataSource.queryParams).forEach(([key, value]) => {
+          if (element.dataSource.query_params) {
+            Object.entries(element.dataSource.query_params).forEach(([key, value]) => {
               if (key && value) {
                 params.append(key, value);
               }
@@ -388,9 +388,9 @@ export function ListWidget({ element, onConfigUpdate }: ListWidgetProps) {
               url: element.dataSource.endpoint,
               method: requestMethod,
               headers: headersObj,
-              queryParams: Object.fromEntries(params),
+              query_params: Object.fromEntries(params),
               body: requestBody,
-              externalConnectionId: element.dataSource.externalConnectionId,
+              external_connection_id: element.dataSource.external_connection_id,
             }),
           });
 
@@ -408,13 +408,13 @@ export function ListWidget({ element, onConfigUpdate }: ListWidgetProps) {
 
           // JSON Path 처리
           let processedData = apiData;
-          if (element.dataSource.jsonPath) {
-            const paths = element.dataSource.jsonPath.split(".");
+          if (element.dataSource.json_path) {
+            const paths = element.dataSource.json_path.split(".");
             for (const path of paths) {
               if (processedData && typeof processedData === "object" && path in processedData) {
                 processedData = processedData[path];
               } else {
-                throw new Error(`JSON Path "${element.dataSource.jsonPath}"에서 데이터를 찾을 수 없습니다`);
+                throw new Error(`JSON Path "${element.dataSource.json_path}"에서 데이터를 찾을 수 없습니다`);
               }
             }
           }
@@ -430,11 +430,11 @@ export function ListWidget({ element, onConfigUpdate }: ListWidgetProps) {
           };
         } else if (element.dataSource.query) {
           // Database (현재 DB 또는 외부 DB)
-          if (element.dataSource.connectionType === "external" && element.dataSource.externalConnectionId) {
+          if (element.dataSource.connection_type === "external" && element.dataSource.external_connection_id) {
             // 외부 DB
             const { ExternalDbConnectionAPI } = await import("@/lib/api/externalDbConnection");
             const externalResult = await ExternalDbConnectionAPI.executeQuery(
-              parseInt(element.dataSource.externalConnectionId),
+              parseInt(element.dataSource.external_connection_id),
               element.dataSource.query,
             );
             if (!externalResult.success) {
@@ -472,17 +472,17 @@ export function ListWidget({ element, onConfigUpdate }: ListWidgetProps) {
     loadData();
 
     // 자동 새로고침 설정
-    const refreshInterval = element.dataSource?.refreshInterval;
+    const refreshInterval = element.dataSource?.refresh_interval;
     if (refreshInterval && refreshInterval > 0) {
       const interval = setInterval(loadData, refreshInterval);
       return () => clearInterval(interval);
     }
   }, [
     element.dataSource?.query,
-    element.dataSource?.connectionType,
-    element.dataSource?.externalConnectionId,
+    element.dataSource?.connection_type,
+    element.dataSource?.external_connection_id,
     element.dataSource?.endpoint,
-    element.dataSource?.refreshInterval,
+    element.dataSource?.refresh_interval,
   ]);
 
   // 로딩 중
diff --git a/frontend/components/admin/department/DepartmentMembers.tsx b/frontend/components/admin/department/DepartmentMembers.tsx
index ebccfe9c..5b164890 100644
--- a/frontend/components/admin/department/DepartmentMembers.tsx
+++ b/frontend/components/admin/department/DepartmentMembers.tsx
@@ -122,7 +122,7 @@ export function DepartmentMembers({
           variant: "default",
         });
       } else {
-        if ((response as any).isDuplicate) {
+        if ((response as any).is_duplicate) {
           setDuplicateMessage(response.error || "이미 해당 부서의 부서원입니다.");
         } else {
           toast({
diff --git a/frontend/components/admin/department/DepartmentStructure.tsx b/frontend/components/admin/department/DepartmentStructure.tsx
index 4347d612..d4066bda 100644
--- a/frontend/components/admin/department/DepartmentStructure.tsx
+++ b/frontend/components/admin/department/DepartmentStructure.tsx
@@ -102,7 +102,7 @@ export function DepartmentStructure({
           variant: "default",
         });
       } else {
-        if ((response as any).isDuplicate) {
+        if ((response as any).is_duplicate) {
           setDuplicateMessage(response.error || "이미 존재하는 부서명입니다.");
         } else {
           toast({
diff --git a/frontend/components/common/HierarchicalCodeSelect.tsx b/frontend/components/common/HierarchicalCodeSelect.tsx
index 3af019b5..87b7cc5d 100644
--- a/frontend/components/common/HierarchicalCodeSelect.tsx
+++ b/frontend/components/common/HierarchicalCodeSelect.tsx
@@ -149,7 +149,7 @@ export function HierarchicalCodeSelect({
       if (response.success && response.data) {
         setLevel2Options(response.data);
         setAllCodes(prev => {
-          const filtered = prev.filter(c => c.depth !== 2 || (c.parentCodeValue || c.parent_code_value) !== parentCodeValue);
+          const filtered = prev.filter(c => c.depth !== 2 || c.parent_code_value !== parentCodeValue);
           return [...filtered, ...response.data];
         });
       }
@@ -179,7 +179,7 @@ export function HierarchicalCodeSelect({
       if (response.success && response.data) {
         setLevel3Options(response.data);
         setAllCodes(prev => {
-          const filtered = prev.filter(c => c.depth !== 3 || (c.parentCodeValue || c.parent_code_value) !== parentCodeValue);
+          const filtered = prev.filter(c => c.depth !== 3 || c.parent_code_value !== parentCodeValue);
           return [...filtered, ...response.data];
         });
       }
@@ -206,7 +206,7 @@ export function HierarchicalCodeSelect({
     
     // 선택된 코드 찾기
     const selectedCode = allCodes.find(c => 
-      (c.codeValue || c.code_value) === value
+      c.code_value === value
     );
     
     if (!selectedCode) return;
@@ -218,17 +218,17 @@ export function HierarchicalCodeSelect({
       setSelectedLevel2("");
       setSelectedLevel3("");
     } else if (depth === 2) {
-      const parentValue = selectedCode.parentCodeValue || selectedCode.parent_code_value || "";
+      const parentValue = selectedCode.parent_code_value || "";
       setSelectedLevel1(parentValue);
       setSelectedLevel2(value);
       setSelectedLevel3("");
       loadLevel2Codes(parentValue);
     } else if (depth === 3) {
-      const parentValue = selectedCode.parentCodeValue || selectedCode.parent_code_value || "";
+      const parentValue = selectedCode.parent_code_value || "";
       
       // 2단계 부모 찾기
-      const level2Code = allCodes.find(c => (c.codeValue || c.code_value) === parentValue);
-      const level1Value = level2Code?.parentCodeValue || level2Code?.parent_code_value || "";
+      const level2Code = allCodes.find(c => c.code_value === parentValue);
+      const level1Value = level2Code?.parent_code_value || "";
       
       setSelectedLevel1(level1Value);
       setSelectedLevel2(parentValue);
@@ -253,7 +253,7 @@ export function HierarchicalCodeSelect({
     
     // 최대 깊이가 1이면 즉시 onChange 호출
     if (maxDepth === 1 && onChange) {
-      const selectedCodeInfo = level1Options.find(c => (c.codeValue || c.code_value) === codeValue);
+      const selectedCodeInfo = level1Options.find(c => c.code_value === codeValue);
       onChange(codeValue, selectedCodeInfo, selectedCodeInfo ? [selectedCodeInfo] : []);
     }
   };
@@ -270,8 +270,8 @@ export function HierarchicalCodeSelect({
     
     // 최대 깊이가 2이면 onChange 호출
     if (maxDepth === 2 && onChange) {
-      const level1Code = level1Options.find(c => (c.codeValue || c.code_value) === selectedLevel1);
-      const level2Code = level2Options.find(c => (c.codeValue || c.code_value) === codeValue);
+      const level1Code = level1Options.find(c => c.code_value === selectedLevel1);
+      const level2Code = level2Options.find(c => c.code_value === codeValue);
       const fullPath = [level1Code, level2Code].filter(Boolean) as CodeInfo[];
       onChange(codeValue, level2Code, fullPath);
     }
@@ -282,9 +282,9 @@ export function HierarchicalCodeSelect({
     setSelectedLevel3(codeValue);
     
     if (onChange) {
-      const level1Code = level1Options.find(c => (c.codeValue || c.code_value) === selectedLevel1);
-      const level2Code = level2Options.find(c => (c.codeValue || c.code_value) === selectedLevel2);
-      const level3Code = level3Options.find(c => (c.codeValue || c.code_value) === codeValue);
+      const level1Code = level1Options.find(c => c.code_value === selectedLevel1);
+      const level2Code = level2Options.find(c => c.code_value === selectedLevel2);
+      const level3Code = level3Options.find(c => c.code_value === codeValue);
       const fullPath = [level1Code, level2Code, level3Code].filter(Boolean) as CodeInfo[];
       onChange(codeValue, level3Code, fullPath);
     }
@@ -309,13 +309,13 @@ export function HierarchicalCodeSelect({
     }
     if (selectedLevel2 && maxDepth >= 2 && !selectedLevel3 && level3Options.length === 0) {
       // 2단계까지 선택되고 3단계 옵션이 없음
-      const level1Code = level1Options.find(c => (c.codeValue || c.code_value) === selectedLevel1);
-      const level2Code = level2Options.find(c => (c.codeValue || c.code_value) === selectedLevel2);
+      const level1Code = level1Options.find(c => c.code_value === selectedLevel1);
+      const level2Code = level2Options.find(c => c.code_value === selectedLevel2);
       const fullPath = [level1Code, level2Code].filter(Boolean) as CodeInfo[];
       onChange(selectedLevel2, level2Code, fullPath);
     } else if (selectedLevel1 && maxDepth >= 1 && !selectedLevel2 && level2Options.length === 0) {
       // 1단계까지 선택되고 2단계 옵션이 없음
-      const level1Code = level1Options.find(c => (c.codeValue || c.code_value) === selectedLevel1);
+      const level1Code = level1Options.find(c => c.code_value === selectedLevel1);
       onChange(selectedLevel1, level1Code, level1Code ? [level1Code] : []);
     }
   }, [level2Options, level3Options]);
@@ -353,8 +353,8 @@ export function HierarchicalCodeSelect({
           </SelectTrigger>
           <SelectContent>
             {level1Options.map((code) => {
-              const codeValue = code.codeValue || code.code_value || "";
-              const codeName = code.codeName || code.code_name || "";
+              const codeValue = code.code_value || "";
+              const codeName = code.code_name || "";
               return (
                 <SelectItem key={codeValue} value={codeValue}>
                   {codeName}
@@ -393,8 +393,8 @@ export function HierarchicalCodeSelect({
                 </div>
               ) : (
                 level2Options.map((code) => {
-                  const codeValue = code.codeValue || code.code_value || "";
-                  const codeName = code.codeName || code.code_name || "";
+                  const codeValue = code.code_value || "";
+                  const codeName = code.code_name || "";
                   return (
                     <SelectItem key={codeValue} value={codeValue}>
                       {codeName}
@@ -435,8 +435,8 @@ export function HierarchicalCodeSelect({
                 </div>
               ) : (
                 level3Options.map((code) => {
-                  const codeValue = code.codeValue || code.code_value || "";
-                  const codeName = code.codeName || code.code_name || "";
+                  const codeValue = code.code_value || "";
+                  const codeName = code.code_name || "";
                   return (
                     <SelectItem key={codeValue} value={codeValue}>
                       {codeName}
diff --git a/frontend/components/dashboard/widgets/CargoListWidget.tsx b/frontend/components/dashboard/widgets/CargoListWidget.tsx
index 4d400e11..98eda797 100644
--- a/frontend/components/dashboard/widgets/CargoListWidget.tsx
+++ b/frontend/components/dashboard/widgets/CargoListWidget.tsx
@@ -11,9 +11,7 @@ interface CargoListWidgetProps {
 interface Cargo {
   id: string | number;
   tracking_number?: string;
-  trackingNumber?: string;
   customer_name?: string;
-  customerName?: string;
   destination?: string;
   status?: string;
   weight?: number;
@@ -56,7 +54,7 @@ export default function CargoListWidget({ element }: CargoListWidgetProps) {
         },
         body: JSON.stringify({
           query: element.dataSource.query,
-          connectionType: element.dataSource.connectionType || "current",
+          connection_type: element.dataSource.connection_type || "current",
           connectionId: element.dataSource.connectionId,
         }),
       });
@@ -95,8 +93,8 @@ export default function CargoListWidget({ element }: CargoListWidgetProps) {
   const filteredList = cargoList.filter((cargo) => {
     if (!searchTerm) return true;
 
-    const trackingNum = cargo.tracking_number || cargo.trackingNumber || "";
-    const customerName = cargo.customer_name || cargo.customerName || "";
+    const trackingNum = cargo.tracking_number || "";
+    const customerName = cargo.customer_name || "";
     const destination = cargo.destination || "";
 
     const searchLower = searchTerm.toLowerCase();
@@ -195,9 +193,9 @@ export default function CargoListWidget({ element }: CargoListWidgetProps) {
               filteredList.map((cargo, index) => (
                 <tr key={cargo.id || index} className="border-border hover:bg-muted/30 border-b transition-colors">
                   <td className="text-foreground p-2 font-medium">
-                    {cargo.tracking_number || cargo.trackingNumber || "-"}
+                    {cargo.tracking_number || "-"}
                   </td>
-                  <td className="text-foreground p-2">{cargo.customer_name || cargo.customerName || "-"}</td>
+                  <td className="text-foreground p-2">{cargo.customer_name || "-"}</td>
                   <td className="text-muted-foreground p-2">{cargo.destination || "-"}</td>
                   <td className="text-muted-foreground p-2 text-right">{cargo.weight ? `${cargo.weight}kg` : "-"}</td>
                   <td className="p-2">
diff --git a/frontend/components/dashboard/widgets/ChartTestWidget.tsx b/frontend/components/dashboard/widgets/ChartTestWidget.tsx
index 90bbb945..8e53587a 100644
--- a/frontend/components/dashboard/widgets/ChartTestWidget.tsx
+++ b/frontend/components/dashboard/widgets/ChartTestWidget.tsx
@@ -111,8 +111,8 @@ export default function ChartTestWidget({ element }: ChartTestWidgetProps) {
     }
 
     const queryParams: Record<string, string> = {};
-    if (source.queryParams) {
-      source.queryParams.forEach((param) => {
+    if (source.query_params) {
+      source.query_params.forEach((param) => {
         if (param.key && param.value) {
           queryParams[param.key] = param.value;
         }
@@ -150,15 +150,15 @@ export default function ChartTestWidget({ element }: ChartTestWidgetProps) {
     }
 
     let apiData = result.data;
-    if (source.jsonPath) {
-      const pathParts = source.jsonPath.split(".");
+    if (source.json_path) {
+      const pathParts = source.json_path.split(".");
       for (const part of pathParts) {
         apiData = apiData?.[part];
       }
     }
 
     const rows = Array.isArray(apiData) ? apiData : [apiData];
-    return applyColumnMapping(rows, source.columnMapping);
+    return applyColumnMapping(rows, source.column_mapping);
   };
 
   // Database 데이터 로딩
@@ -168,9 +168,9 @@ export default function ChartTestWidget({ element }: ChartTestWidgetProps) {
     }
 
     let result;
-    if (source.connectionType === "external" && source.externalConnectionId) {
+    if (source.connection_type === "external" && source.external_connection_id) {
       const { ExternalDbConnectionAPI } = await import("@/lib/api/externalDbConnection");
-      result = await ExternalDbConnectionAPI.executeQuery(parseInt(source.externalConnectionId), source.query);
+      result = await ExternalDbConnectionAPI.executeQuery(parseInt(source.external_connection_id), source.query);
     } else {
       const { dashboardApi } = await import("@/lib/api/dashboard");
 
@@ -191,7 +191,7 @@ export default function ChartTestWidget({ element }: ChartTestWidgetProps) {
     }
 
     const rows = result.rows || result.data || [];
-    return applyColumnMapping(rows, source.columnMapping);
+    return applyColumnMapping(rows, source.column_mapping);
   };
 
   // 초기 로드
@@ -206,7 +206,7 @@ export default function ChartTestWidget({ element }: ChartTestWidgetProps) {
     if (!dataSources || dataSources.length === 0) return;
 
     const intervals = dataSources
-      .map((ds) => ds.refreshInterval)
+      .map((ds) => ds.refresh_interval)
       .filter((interval): interval is number => typeof interval === "number" && interval > 0);
 
     if (intervals.length === 0) return;
diff --git a/frontend/components/dashboard/widgets/CustomerIssuesWidget.tsx b/frontend/components/dashboard/widgets/CustomerIssuesWidget.tsx
index 37f30be7..892bed18 100644
--- a/frontend/components/dashboard/widgets/CustomerIssuesWidget.tsx
+++ b/frontend/components/dashboard/widgets/CustomerIssuesWidget.tsx
@@ -11,13 +11,10 @@ interface CustomerIssuesWidgetProps {
 interface Issue {
   id: string | number;
   issue_type?: string;
-  issueType?: string;
   customer_name?: string;
-  customerName?: string;
   description?: string;
   priority?: string;
   created_at?: string;
-  createdAt?: string;
   status?: string;
 }
 
@@ -58,7 +55,7 @@ export default function CustomerIssuesWidget({ element }: CustomerIssuesWidgetPr
         },
         body: JSON.stringify({
           query: element.dataSource.query,
-          connectionType: element.dataSource.connectionType || "current",
+          connection_type: element.dataSource.connection_type || "current",
           connectionId: element.dataSource.connectionId,
         }),
       });
@@ -237,19 +234,19 @@ export default function CustomerIssuesWidget({ element }: CustomerIssuesWidgetPr
                       {issue.status || "처리중"}
                     </span>
                   </div>
-                  <p className="text-foreground text-sm font-medium">{issue.issue_type || issue.issueType || "기타"}</p>
+                  <p className="text-foreground text-sm font-medium">{issue.issue_type || "기타"}</p>
                 </div>
               </div>
 
               <p className="text-muted-foreground mb-2 text-xs">
-                고객: {issue.customer_name || issue.customerName || "-"}
+                고객: {issue.customer_name || "-"}
               </p>
 
               <p className="text-muted-foreground line-clamp-2 text-xs">{issue.description || "설명 없음"}</p>
 
-              {(issue.created_at || issue.createdAt) && (
+              {issue.created_at && (
                 <p className="text-muted-foreground mt-2 text-xs">
-                  {new Date(issue.created_at || issue.createdAt || "").toLocaleDateString("ko-KR")}
+                  {new Date(issue.created_at).toLocaleDateString("ko-KR")}
                 </p>
               )}
             </div>
diff --git a/frontend/components/dashboard/widgets/DeliveryTodayStatsWidget.tsx b/frontend/components/dashboard/widgets/DeliveryTodayStatsWidget.tsx
index 5f8eb721..6655bc11 100644
--- a/frontend/components/dashboard/widgets/DeliveryTodayStatsWidget.tsx
+++ b/frontend/components/dashboard/widgets/DeliveryTodayStatsWidget.tsx
@@ -66,14 +66,14 @@ export default function DeliveryTodayStatsWidget({ element }: DeliveryTodayStats
 
         // 오늘 발송 건수 (created_at 기준)
         const shippedToday = rows.filter((row: any) => {
-          const createdDate = row.created_at?.split("T")[0] || row.createdAt?.split("T")[0];
+          const createdDate = row.created_at?.split("T")[0];
           return createdDate === today;
         }).length;
 
         // 오늘 도착 건수 (status === 'delivered' AND estimated_delivery 기준)
         const deliveredToday = rows.filter((row: any) => {
           const status = row.status || "";
-          const deliveryDate = row.estimated_delivery?.split("T")[0] || row.estimatedDelivery?.split("T")[0];
+          const deliveryDate = row.estimated_delivery?.split("T")[0];
           return (status === "delivered" || status === "완료") && deliveryDate === today;
         }).length;
 
diff --git a/frontend/components/dashboard/widgets/MapTestWidgetV2.tsx b/frontend/components/dashboard/widgets/MapTestWidgetV2.tsx
index 72133672..22240195 100644
--- a/frontend/components/dashboard/widgets/MapTestWidgetV2.tsx
+++ b/frontend/components/dashboard/widgets/MapTestWidgetV2.tsx
@@ -780,8 +780,8 @@ export default function MapTestWidgetV2({ element }: MapTestWidgetV2Props) {
       }
 
       // 마커 데이터 처리 (위도/경도가 있는 경우)
-      let lat = row.lat || row.latitude || row.y || row.locationDataY;
-      let lng = row.lng || row.longitude || row.x || row.locationDataX;
+      let lat = row.lat || row.latitude || row.y || row.location_data_y;
+      let lng = row.lng || row.longitude || row.x || row.location_data_x;
 
       // 위도/경도가 없으면 지역 코드/지역명으로 변환 시도
       if (
diff --git a/frontend/components/dashboard/widgets/TaskWidget.tsx b/frontend/components/dashboard/widgets/TaskWidget.tsx
index aefb1599..2f165c5d 100644
--- a/frontend/components/dashboard/widgets/TaskWidget.tsx
+++ b/frontend/components/dashboard/widgets/TaskWidget.tsx
@@ -130,17 +130,17 @@ export default function TaskWidget({ element }: TaskWidgetProps) {
       description: row.description || row.desc || row.content || row.notes,
       priority: row.priority || "normal",
       status: row.status || "pending",
-      assignedTo: row.assigned_to || row.assignedTo || row.user,
-      dueDate: row.due_date || row.dueDate || row.deadline || row.scheduled_date || row.scheduledDate,
-      createdAt: row.created_at || row.createdAt || new Date().toISOString(),
-      updatedAt: row.updated_at || row.updatedAt || new Date().toISOString(),
-      completedAt: row.completed_at || row.completedAt,
-      isUrgent: row.is_urgent || row.isUrgent || row.urgent || false,
+      assignedTo: row.assigned_to || row.user,
+      dueDate: row.due_date || row.deadline || row.scheduled_date,
+      createdAt: row.created_at || new Date().toISOString(),
+      updatedAt: row.updated_at || new Date().toISOString(),
+      completedAt: row.completed_at,
+      isUrgent: row.is_urgent || row.urgent || false,
       order: row.display_order || row.order || index,
-      vehicleNumber: row.vehicle_number || row.vehicleNumber,
-      vehicleType: row.vehicle_type || row.vehicleType,
-      maintenanceType: row.maintenance_type || row.maintenanceType,
-      estimatedCost: row.estimated_cost || row.estimatedCost,
+      vehicleNumber: row.vehicle_number,
+      vehicleType: row.vehicle_type,
+      maintenanceType: row.maintenance_type,
+      estimatedCost: row.estimated_cost,
     }));
   };
 
@@ -223,21 +223,16 @@ export default function TaskWidget({ element }: TaskWidgetProps) {
         const selectMatch = element.dataSource.query.match(/FROM\s+(\w+)/i);
         let tableName = selectMatch ? selectMatch[1] : "unknown_table";
 
-        // 필드 값 매핑 (camelCase와 snake_case 모두 대응)
+        // 필드 값 매핑 (snake_case 기준)
         const fieldMapping: Record<string, any> = {
           title: newTask.title,
           description: newTask.description || '',
           priority: newTask.priority,
           status: 'pending',
-          assignedTo: newTask.assignedTo || '',
           assigned_to: newTask.assignedTo || '',
-          dueDate: newTask.dueDate || null,
           due_date: newTask.dueDate || null,
-          isUrgent: newTask.isUrgent,
           is_urgent: newTask.isUrgent,
-          createdAt: "NOW()",
           created_at: "NOW()",
-          updatedAt: "NOW()",
           updated_at: "NOW()",
         };
 
diff --git a/frontend/components/dashboard/widgets/TransportStatsWidget.tsx b/frontend/components/dashboard/widgets/TransportStatsWidget.tsx
index 0734182f..952d45c0 100644
--- a/frontend/components/dashboard/widgets/TransportStatsWidget.tsx
+++ b/frontend/components/dashboard/widgets/TransportStatsWidget.tsx
@@ -100,7 +100,7 @@ export default function TransportStatsWidget({ element, refreshInterval = 60000
       // 특정 키워드를 포함한 컬럼 자동 매핑
       const weightKeys = ["weight", "cargo_weight", "total_weight", "중량", "무게"];
       const distanceKeys = ["distance", "total_distance", "거리", "주행거리"];
-      const onTimeKeys = ["is_on_time", "on_time", "onTime", "정시", "정시도착"];
+      const onTimeKeys = ["is_on_time", "on_time", "정시", "정시도착"];
       const deliveryTimeKeys = [
         "delivery_duration",
         "delivery_time",
diff --git a/frontend/components/dataflow/external-call/ExternalCallPanel.tsx b/frontend/components/dataflow/external-call/ExternalCallPanel.tsx
index 3feb48b7..69e8071d 100644
--- a/frontend/components/dataflow/external-call/ExternalCallPanel.tsx
+++ b/frontend/components/dataflow/external-call/ExternalCallPanel.tsx
@@ -289,7 +289,7 @@ const ExternalCallPanel: React.FC<ExternalCallPanelProps> = ({
               context={{
                 relationshipId,
                 diagramId: "test-diagram",
-                userId: "current-user",
+                user_id: "current-user",
                 executionId: "test-execution",
                 sourceData: { test: "data" },
                 timestamp: new Date().toISOString(),
diff --git a/frontend/components/dataflow/external-call/ExternalCallTestPanel.tsx b/frontend/components/dataflow/external-call/ExternalCallTestPanel.tsx
index f00d8e8c..ce136432 100644
--- a/frontend/components/dataflow/external-call/ExternalCallTestPanel.tsx
+++ b/frontend/components/dataflow/external-call/ExternalCallTestPanel.tsx
@@ -54,7 +54,7 @@ const ExternalCallTestPanel: React.FC<ExternalCallTestPanelProps> = ({
   const [testContext, setTestContext] = useState<ExternalCallContext>(() => ({
     relationshipId: context?.relationshipId || "test-relationship",
     diagramId: context?.diagramId || "test-diagram",
-    userId: context?.userId || "test-user",
+    user_id: context?.user_id || "test-user",
     executionId: context?.executionId || `test-${Date.now()}`,
     sourceData: context?.sourceData || {
       id: 1,
@@ -78,7 +78,7 @@ const ExternalCallTestPanel: React.FC<ExternalCallTestPanelProps> = ({
       "{{timestamp}}": context.timestamp,
       "{{relationshipId}}": context.relationshipId,
       "{{diagramId}}": context.diagramId,
-      "{{userId}}": context.userId,
+      "{{userId}}": context.user_id,
       "{{executionId}}": context.executionId,
     };
 
@@ -189,7 +189,7 @@ const ExternalCallTestPanel: React.FC<ExternalCallTestPanelProps> = ({
     setTestContext({
       relationshipId: "test-relationship",
       diagramId: "test-diagram",
-      userId: "test-user",
+      user_id: "test-user",
       executionId: `test-${Date.now()}`,
       sourceData: {
         id: 1,
diff --git a/frontend/components/dataflow/node-editor/panels/properties/TableSourceProperties.tsx b/frontend/components/dataflow/node-editor/panels/properties/TableSourceProperties.tsx
index 8b4a5d46..13b833a4 100644
--- a/frontend/components/dataflow/node-editor/panels/properties/TableSourceProperties.tsx
+++ b/frontend/components/dataflow/node-editor/panels/properties/TableSourceProperties.tsx
@@ -24,8 +24,8 @@ interface TableSourcePropertiesProps {
 }
 
 interface TableOption {
-  tableName: string;
-  displayName: string;
+  table_name: string;
+  display_name: string;
   description: string;
   label: string; // 표시용 (라벨 또는 테이블명)
 }
@@ -68,14 +68,14 @@ export function TableSourceProperties({ nodeId, data }: TableSourcePropertiesPro
 
       const tableList = await tableTypeApi.getTables();
 
-      // 테이블 목록 변환 (라벨 또는 displayName 우선 표시)
+      // 테이블 목록 변환 (라벨 또는 display_name 우선 표시)
       const options: TableOption[] = tableList.map((table) => {
-        // tableLabel이 있으면 우선 사용, 없으면 displayName, 그것도 없으면 tableName
-        const label = (table as any).tableLabel || table.displayName || table.tableName || "알 수 없는 테이블";
+        // table_label이 있으면 우선 사용, 없으면 display_name, 그것도 없으면 table_name
+        const label = (table as any).table_label || table.display_name || table.table_name || "알 수 없는 테이블";
 
         return {
-          tableName: table.tableName,
-          displayName: table.displayName || table.tableName,
+          table_name: table.table_name,
+          display_name: table.display_name || table.table_name,
           description: table.description || "",
           label,
         };
@@ -95,9 +95,9 @@ export function TableSourceProperties({ nodeId, data }: TableSourcePropertiesPro
    * 테이블 선택 핸들러 (즉시 노드 업데이트 + 컬럼 로드)
    */
   const handleTableSelect = async (selectedTableName: string) => {
-    const selectedTable = tables.find((t) => t.tableName === selectedTableName);
+    const selectedTable = tables.find((t) => t.table_name === selectedTableName);
     if (selectedTable) {
-      const newTableName = selectedTable.tableName;
+      const newTableName = selectedTable.table_name;
       const newDisplayName = selectedTable.label;
 
       setTableName(newTableName);
@@ -111,11 +111,10 @@ export function TableSourceProperties({ nodeId, data }: TableSourcePropertiesPro
         console.log("🔍 API에서 받은 컬럼 데이터:", columns);
 
         const fields = columns.map((col: any) => ({
-          name: col.column_name || col.columnName,
-          type: col.data_type || col.dataType || "unknown",
-          nullable: col.is_nullable === "YES" || col.isNullable === true,
-          // displayName이 라벨입니다!
-          label: col.displayName || col.label_ko || col.columnLabel || col.column_label,
+          name: col.column_name,
+          type: col.data_type || "unknown",
+          nullable: col.is_nullable === "YES",
+          label: col.display_name || col.label_ko || col.column_label,
         }));
 
         console.log(`✅ ${fields.length}개 컬럼 로드 완료:`, fields);
@@ -164,7 +163,7 @@ export function TableSourceProperties({ nodeId, data }: TableSourcePropertiesPro
   };
 
   // 현재 선택된 테이블의 라벨 찾기
-  const selectedTableLabel = tables.find((t) => t.tableName === tableName)?.label || tableName;
+  const selectedTableLabel = tables.find((t) => t.table_name === tableName)?.label || tableName;
 
   return (
     <div className="space-y-4 p-4 pb-8">
@@ -217,21 +216,21 @@ export function TableSourceProperties({ nodeId, data }: TableSourcePropertiesPro
                       <ScrollArea className="h-[300px]">
                         {tables.map((table) => (
                           <CommandItem
-                            key={table.tableName}
-                            value={`${table.label} ${table.tableName} ${table.description}`}
-                            onSelect={() => handleTableSelect(table.tableName)}
+                            key={table.table_name}
+                            value={`${table.label} ${table.table_name} ${table.description}`}
+                            onSelect={() => handleTableSelect(table.table_name)}
                             className="cursor-pointer"
                           >
                             <Check
                               className={cn(
                                 "mr-2 h-4 w-4",
-                                tableName === table.tableName ? "opacity-100" : "opacity-0",
+                                tableName === table.table_name ? "opacity-100" : "opacity-0",
                               )}
                             />
                             <div className="flex flex-col">
                               <span className="font-medium">{table.label}</span>
-                              {table.label !== table.tableName && (
-                                <span className="text-muted-foreground text-xs">{table.tableName}</span>
+                              {table.label !== table.table_name && (
+                                <span className="text-muted-foreground text-xs">{table.table_name}</span>
                               )}
                               {table.description && (
                                 <span className="text-muted-foreground text-xs">{table.description}</span>
diff --git a/frontend/components/dataflow/node-editor/panels/properties/UpdateActionProperties.tsx b/frontend/components/dataflow/node-editor/panels/properties/UpdateActionProperties.tsx
index fdc060c7..2adaddbb 100644
--- a/frontend/components/dataflow/node-editor/panels/properties/UpdateActionProperties.tsx
+++ b/frontend/components/dataflow/node-editor/panels/properties/UpdateActionProperties.tsx
@@ -27,18 +27,18 @@ interface UpdateActionPropertiesProps {
 }
 
 interface TableOption {
-  tableName: string;
-  displayName: string;
+  table_name: string;
+  display_name: string;
   description: string;
   label: string;
 }
 
 interface ColumnInfo {
-  columnName: string;
-  columnLabel?: string;
-  dataType: string;
-  isNullable: boolean;
-  columnDefault?: string | null;
+  column_name: string;
+  column_label?: string;
+  data_type: string;
+  is_nullable: boolean;
+  column_default?: string | null;
 }
 
 const OPERATORS = [
@@ -393,11 +393,11 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
       console.log("🔍 UPDATE 노드 - 테이블 목록:", tableList);
 
       const options: TableOption[] = tableList.map((table) => {
-        const label = (table as any).tableLabel || table.displayName || table.tableName || "알 수 없는 테이블";
+        const label = (table as any).table_label || table.display_name || table.table_name || "알 수 없는 테이블";
 
         return {
-          tableName: table.tableName,
-          displayName: table.displayName || table.tableName,
+          table_name: table.table_name,
+          display_name: table.display_name || table.table_name,
           description: table.description || "",
           label,
         };
@@ -469,7 +469,7 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
 
       const columnInfo: ColumnInfo[] = columns.map((col: any) => {
         // is_nullable 파싱: "YES", true, 1 등을 true로, "NO", false, 0 등을 false로 변환
-        const isNullableValue = col.is_nullable ?? col.isNullable;
+        const isNullableValue = col.is_nullable;
         let isNullable = true; // 기본값: nullable
 
         if (typeof isNullableValue === "boolean") {
@@ -481,11 +481,11 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
         }
 
         return {
-          columnName: col.column_name || col.columnName,
-          columnLabel: col.label_ko || col.columnLabel,
-          dataType: col.data_type || col.dataType || "unknown",
-          isNullable,
-          columnDefault: col.column_default ?? col.columnDefault ?? null,
+          column_name: col.column_name,
+          column_label: col.label_ko || col.column_label,
+          data_type: col.data_type || "unknown",
+          is_nullable: isNullable,
+          column_default: col.column_default ?? null,
         };
       });
 
@@ -500,8 +500,8 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
   };
 
   const handleTableSelect = async (newTableName: string) => {
-    const selectedTable = tables.find((t) => t.tableName === newTableName);
-    const newDisplayName = selectedTable?.label || selectedTable?.displayName || newTableName;
+    const selectedTable = tables.find((t) => t.table_name === newTableName);
+    const newDisplayName = selectedTable?.label || selectedTable?.display_name || newTableName;
 
     setTargetTable(newTableName);
     setDisplayName(newDisplayName);
@@ -558,11 +558,11 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
         sourceFieldLabel: sourceField?.label,
       };
     } else if (field === "targetField") {
-      const targetColumn = targetColumns.find((c) => c.columnName === value);
+      const targetColumn = targetColumns.find((c) => c.column_name === value);
       newMappings[index] = {
         ...newMappings[index],
         targetField: value,
-        targetFieldLabel: targetColumn?.columnLabel,
+        targetFieldLabel: targetColumn?.column_label,
       };
     } else {
       newMappings[index] = { ...newMappings[index], [field]: value };
@@ -632,11 +632,11 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
 
     // 필드 변경 시 라벨도 함께 저장
     if (field === "field") {
-      const targetColumn = targetColumns.find((c) => c.columnName === value);
+      const targetColumn = targetColumns.find((c) => c.column_name === value);
       newConditions[index] = {
         ...newConditions[index],
         field: value,
-        fieldLabel: targetColumn?.columnLabel,
+        fieldLabel: targetColumn?.column_label,
       };
     } else if (field === "sourceField") {
       const sourceField = sourceFields.find((f) => f.name === value);
@@ -669,7 +669,7 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
     updateNode(nodeId, { whereConditions: newConditions });
   };
 
-  const selectedTableLabel = tables.find((t) => t.tableName === targetTable)?.label || targetTable;
+  const selectedTableLabel = tables.find((t) => t.table_name === targetTable)?.label || targetTable;
 
   return (
     <div className="space-y-4 p-4 pb-8">
@@ -777,19 +777,19 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
                       <CommandGroup>
                         {tables.map((table) => (
                           <CommandItem
-                            key={table.tableName}
-                            value={`${table.label} ${table.displayName} ${table.tableName}`}
-                            onSelect={() => handleTableSelect(table.tableName)}
+                            key={table.table_name}
+                            value={`${table.label} ${table.display_name} ${table.table_name}`}
+                            onSelect={() => handleTableSelect(table.table_name)}
                           >
                             <Check
                               className={cn(
                                 "mr-2 h-4 w-4",
-                                targetTable === table.tableName ? "opacity-100" : "opacity-0",
+                                targetTable === table.table_name ? "opacity-100" : "opacity-0",
                               )}
                             />
                             <div className="flex flex-col">
-                              <span className="font-medium">{table.label || table.displayName}</span>
-                              <span className="text-muted-foreground text-xs">{table.tableName}</span>
+                              <span className="font-medium">{table.label || table.display_name}</span>
+                              <span className="text-muted-foreground text-xs">{table.table_name}</span>
                             </div>
                           </CommandItem>
                         ))}
@@ -1173,11 +1173,11 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
                         >
                           {condition.field
                             ? (() => {
-                                const col = targetColumns.find((c) => c.columnName === condition.field);
+                                const col = targetColumns.find((c) => c.column_name === condition.field);
                                 return (
                                   <div className="flex items-center justify-between gap-2 overflow-hidden">
-                                    <span className="truncate font-mono">{col?.columnLabel || condition.field}</span>
-                                    <span className="text-muted-foreground text-xs">{col?.dataType}</span>
+                                    <span className="truncate font-mono">{col?.column_label || condition.field}</span>
+                                    <span className="text-muted-foreground text-xs">{col?.data_type}</span>
                                   </div>
                                 );
                               })()
@@ -1197,8 +1197,8 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
                             <CommandGroup>
                               {targetColumns.map((col) => (
                                 <CommandItem
-                                  key={col.columnName}
-                                  value={col.columnName}
+                                  key={col.column_name}
+                                  value={col.column_name}
                                   onSelect={(currentValue) => {
                                     handleConditionChange(index, "field", currentValue);
                                     const newState = [...targetFieldsOpenState];
@@ -1210,12 +1210,12 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
                                   <Check
                                     className={cn(
                                       "mr-2 h-4 w-4",
-                                      condition.field === col.columnName ? "opacity-100" : "opacity-0",
+                                      condition.field === col.column_name ? "opacity-100" : "opacity-0",
                                     )}
                                   />
                                   <div className="flex flex-col">
-                                    <span className="font-mono font-medium">{col.columnLabel || col.columnName}</span>
-                                    <span className="text-muted-foreground text-[10px]">{col.dataType}</span>
+                                    <span className="font-mono font-medium">{col.column_label || col.column_name}</span>
+                                    <span className="text-muted-foreground text-[10px]">{col.data_type}</span>
                                   </div>
                                 </CommandItem>
                               ))}
@@ -1540,15 +1540,15 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
                               >
                                 {mapping.targetField
                                   ? (() => {
-                                      const col = targetColumns.find((c) => c.columnName === mapping.targetField);
+                                      const col = targetColumns.find((c) => c.column_name === mapping.targetField);
                                       return (
                                         <div className="flex items-center justify-between gap-2 overflow-hidden">
                                           <span className="truncate font-mono">
-                                            {col?.columnLabel || mapping.targetField}
+                                            {col?.column_label || mapping.targetField}
                                           </span>
                                           <span className="text-muted-foreground text-xs">
-                                            {col?.dataType}
-                                            {col && !col.isNullable && <span className="text-destructive">*</span>}
+                                            {col?.data_type}
+                                            {col && !col.is_nullable && <span className="text-destructive">*</span>}
                                           </span>
                                         </div>
                                       );
@@ -1569,8 +1569,8 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
                                   <CommandGroup>
                                     {targetColumns.map((col) => (
                                       <CommandItem
-                                        key={col.columnName}
-                                        value={col.columnName}
+                                        key={col.column_name}
+                                        value={col.column_name}
                                         onSelect={(currentValue) => {
                                           handleMappingChange(index, "targetField", currentValue);
                                           const newState = [...mappingTargetFieldsOpenState];
@@ -1582,19 +1582,19 @@ export function UpdateActionProperties({ nodeId, data }: UpdateActionPropertiesP
                                         <Check
                                           className={cn(
                                             "mr-2 h-4 w-4",
-                                            mapping.targetField === col.columnName ? "opacity-100" : "opacity-0",
+                                            mapping.targetField === col.column_name ? "opacity-100" : "opacity-0",
                                           )}
                                         />
                                         <div className="flex flex-col">
                                           <span className="font-mono font-medium">
-                                            {col.columnLabel || col.columnName}
+                                            {col.column_label || col.column_name}
                                           </span>
                                           <span className="text-muted-foreground text-[10px]">
-                                            {col.dataType}
-                                            {col.columnDefault ? (
+                                            {col.data_type}
+                                            {col.column_default ? (
                                               <span className="text-primary"> 🔵기본값</span>
                                             ) : (
-                                              !col.isNullable && <span className="text-destructive"> *필수</span>
+                                              !col.is_nullable && <span className="text-destructive"> *필수</span>
                                             )}
                                           </span>
                                         </div>
diff --git a/frontend/components/dataflow/node-editor/panels/properties/UpsertActionProperties.tsx b/frontend/components/dataflow/node-editor/panels/properties/UpsertActionProperties.tsx
index dfd5499d..593cdd38 100644
--- a/frontend/components/dataflow/node-editor/panels/properties/UpsertActionProperties.tsx
+++ b/frontend/components/dataflow/node-editor/panels/properties/UpsertActionProperties.tsx
@@ -27,18 +27,18 @@ interface UpsertActionPropertiesProps {
 }
 
 interface TableOption {
-  tableName: string;
-  displayName: string;
+  table_name: string;
+  display_name: string;
   description: string;
   label: string;
 }
 
 interface ColumnInfo {
-  columnName: string;
-  columnLabel?: string;
-  dataType: string;
-  isNullable: boolean;
-  columnDefault?: string | null;
+  column_name: string;
+  column_label?: string;
+  data_type: string;
+  is_nullable: boolean;
+  column_default?: string | null;
 }
 
 export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesProps) {
@@ -435,11 +435,11 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
       const tableList = await tableTypeApi.getTables();
 
       const options: TableOption[] = tableList.map((table) => {
-        const label = (table as any).tableLabel || table.displayName || table.tableName || "알 수 없는 테이블";
+        const label = (table as any).table_label || table.display_name || table.table_name || "알 수 없는 테이블";
 
         return {
-          tableName: table.tableName,
-          displayName: table.displayName || table.tableName,
+          table_name: table.table_name,
+          display_name: table.display_name || table.table_name,
           description: table.description || "",
           label,
         };
@@ -460,23 +460,23 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
 
       const columnInfo: ColumnInfo[] = columns.map((col: any) => {
         // is_nullable 파싱: "YES", true, 1 등을 true로, "NO", false, 0 등을 false로 변환
-        const isNullableValue = col.is_nullable ?? col.isNullable;
-        let isNullable = true; // 기본값: nullable
+        const isNullableValue = col.is_nullable;
+        let is_nullable = true; // 기본값: nullable
 
         if (typeof isNullableValue === "boolean") {
-          isNullable = isNullableValue;
+          is_nullable = isNullableValue;
         } else if (typeof isNullableValue === "string") {
-          isNullable = isNullableValue.toUpperCase() === "YES" || isNullableValue.toUpperCase() === "TRUE";
+          is_nullable = isNullableValue.toUpperCase() === "YES" || isNullableValue.toUpperCase() === "TRUE";
         } else if (typeof isNullableValue === "number") {
-          isNullable = isNullableValue !== 0;
+          is_nullable = isNullableValue !== 0;
         }
 
         return {
-          columnName: col.column_name || col.columnName,
-          columnLabel: col.label_ko || col.columnLabel,
-          dataType: col.data_type || col.dataType || "unknown",
-          isNullable,
-          columnDefault: col.column_default ?? col.columnDefault ?? null,
+          column_name: col.column_name,
+          column_label: col.label_ko || col.column_label,
+          data_type: col.data_type || "unknown",
+          is_nullable,
+          column_default: col.column_default ?? null,
         };
       });
 
@@ -490,8 +490,8 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
   };
 
   const handleTableSelect = async (newTableName: string) => {
-    const selectedTable = tables.find((t) => t.tableName === newTableName);
-    const newDisplayName = selectedTable?.label || selectedTable?.displayName || newTableName;
+    const selectedTable = tables.find((t) => t.table_name === newTableName);
+    const newDisplayName = selectedTable?.label || selectedTable?.display_name || newTableName;
 
     setTargetTable(newTableName);
     setDisplayName(newDisplayName);
@@ -512,9 +512,9 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
 
   const handleAddConflictKey = (columnName: string) => {
     if (!conflictKeys.includes(columnName)) {
-      const column = targetColumns.find((c) => c.columnName === columnName);
+      const column = targetColumns.find((c) => c.column_name === columnName);
       const newConflictKeys = [...conflictKeys, columnName];
-      const newConflictKeyLabels = [...conflictKeyLabels, column?.columnLabel || columnName];
+      const newConflictKeyLabels = [...conflictKeyLabels, column?.column_label || columnName];
 
       setConflictKeys(newConflictKeys);
       setConflictKeyLabels(newConflictKeyLabels);
@@ -576,11 +576,11 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
         sourceFieldLabel: sourceField?.label,
       };
     } else if (field === "targetField") {
-      const targetColumn = targetColumns.find((c) => c.columnName === value);
+      const targetColumn = targetColumns.find((c) => c.column_name === value);
       newMappings[index] = {
         ...newMappings[index],
         targetField: value,
-        targetFieldLabel: targetColumn?.columnLabel,
+        targetFieldLabel: targetColumn?.column_label,
       };
     } else {
       newMappings[index] = { ...newMappings[index], [field]: value };
@@ -606,7 +606,7 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
     updateNode(nodeId, { fieldMappings: newMappings });
   };
 
-  const selectedTableLabel = tables.find((t) => t.tableName === targetTable)?.label || targetTable;
+  const selectedTableLabel = tables.find((t) => t.table_name === targetTable)?.label || targetTable;
 
   return (
     <div>
@@ -722,19 +722,19 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
                         <CommandGroup>
                           {tables.map((table) => (
                             <CommandItem
-                              key={table.tableName}
-                              value={`${table.label} ${table.displayName} ${table.tableName}`}
-                              onSelect={() => handleTableSelect(table.tableName)}
+                              key={table.table_name}
+                              value={`${table.label} ${table.display_name} ${table.table_name}`}
+                              onSelect={() => handleTableSelect(table.table_name)}
                             >
                               <Check
                                 className={cn(
                                   "mr-2 h-4 w-4",
-                                  targetTable === table.tableName ? "opacity-100" : "opacity-0",
+                                  targetTable === table.table_name ? "opacity-100" : "opacity-0",
                                 )}
                               />
                               <div className="flex flex-col">
-                                <span className="font-medium">{table.label || table.displayName}</span>
-                                <span className="text-muted-foreground text-xs">{table.tableName}</span>
+                                <span className="font-medium">{table.label || table.display_name}</span>
+                                <span className="text-muted-foreground text-xs">{table.table_name}</span>
                               </div>
                             </CommandItem>
                           ))}
@@ -1108,19 +1108,19 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
                       <CommandEmpty className="text-xs sm:text-sm">필드를 찾을 수 없습니다.</CommandEmpty>
                       <CommandGroup>
                         {targetColumns
-                          .filter((col) => !conflictKeys.includes(col.columnName))
+                          .filter((col) => !conflictKeys.includes(col.column_name))
                           .map((col) => (
                             <CommandItem
-                              key={col.columnName}
-                              value={col.columnName}
+                              key={col.column_name}
+                              value={col.column_name}
                               onSelect={(currentValue) => {
                                 handleAddConflictKey(currentValue);
                               }}
                               className="text-xs sm:text-sm"
                             >
                               <div className="flex flex-col">
-                                <span className="font-mono font-medium">{col.columnLabel || col.columnName}</span>
-                                <span className="text-muted-foreground text-[10px]">{col.dataType}</span>
+                                <span className="font-mono font-medium">{col.column_label || col.column_name}</span>
+                                <span className="text-muted-foreground text-[10px]">{col.data_type}</span>
                               </div>
                             </CommandItem>
                           ))}
@@ -1292,15 +1292,15 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
                               >
                                 {mapping.targetField
                                   ? (() => {
-                                      const col = targetColumns.find((c) => c.columnName === mapping.targetField);
+                                      const col = targetColumns.find((c) => c.column_name === mapping.targetField);
                                       return (
                                         <div className="flex items-center justify-between gap-2 overflow-hidden">
                                           <span className="truncate font-mono">
-                                            {col?.columnLabel || mapping.targetField}
+                                            {col?.column_label || mapping.targetField}
                                           </span>
                                           <span className="text-muted-foreground text-xs">
-                                            {col?.dataType}
-                                            {col && !col.isNullable && <span className="text-destructive">*</span>}
+                                            {col?.data_type}
+                                            {col && !col.is_nullable && <span className="text-destructive">*</span>}
                                           </span>
                                         </div>
                                       );
@@ -1321,8 +1321,8 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
                                   <CommandGroup>
                                     {targetColumns.map((col) => (
                                       <CommandItem
-                                        key={col.columnName}
-                                        value={col.columnName}
+                                        key={col.column_name}
+                                        value={col.column_name}
                                         onSelect={(currentValue) => {
                                           handleMappingChange(index, "targetField", currentValue);
                                           const newState = [...mappingTargetFieldsOpenState];
@@ -1334,19 +1334,19 @@ export function UpsertActionProperties({ nodeId, data }: UpsertActionPropertiesP
                                         <Check
                                           className={cn(
                                             "mr-2 h-4 w-4",
-                                            mapping.targetField === col.columnName ? "opacity-100" : "opacity-0",
+                                            mapping.targetField === col.column_name ? "opacity-100" : "opacity-0",
                                           )}
                                         />
                                         <div className="flex flex-col">
                                           <span className="font-mono font-medium">
-                                            {col.columnLabel || col.columnName}
+                                            {col.column_label || col.column_name}
                                           </span>
                                           <span className="text-muted-foreground text-[10px]">
-                                            {col.dataType}
-                                            {col.columnDefault ? (
+                                            {col.data_type}
+                                            {col.column_default ? (
                                               <span className="text-primary"> 🔵기본값</span>
                                             ) : (
-                                              !col.isNullable && <span className="text-destructive"> *필수</span>
+                                              !col.is_nullable && <span className="text-destructive"> *필수</span>
                                             )}
                                           </span>
                                         </div>
diff --git a/frontend/components/flow/FlowConditionBuilder.tsx b/frontend/components/flow/FlowConditionBuilder.tsx
index 5f5c753d..30165e16 100644
--- a/frontend/components/flow/FlowConditionBuilder.tsx
+++ b/frontend/components/flow/FlowConditionBuilder.tsx
@@ -125,9 +125,9 @@ export function FlowConditionBuilder({
                 if (restApiData.columns && restApiData.columns.length > 0) {
                   // 별칭 적용
                   const prefixedColumns = restApiData.columns.map((col) => ({
-                    column_name: config.alias ? `${config.alias}${col.columnName}` : col.columnName,
-                    data_type: col.dataType || "varchar",
-                    displayName: `${col.columnLabel || col.columnName} (${config.connectionName})`,
+                    column_name: config.alias ? `${config.alias}${col.column_name}` : col.column_name,
+                    data_type: col.data_type || "varchar",
+                    display_name: `${col.column_label || col.column_name} (${config.connectionName})`,
                     sourceApi: config.connectionName,
                   }));
                   allColumns.push(...prefixedColumns);
@@ -181,9 +181,9 @@ export function FlowConditionBuilder({
             
             if (restApiData.columns && restApiData.columns.length > 0) {
               const columnList = restApiData.columns.map((col) => ({
-                column_name: col.columnName,
-                data_type: col.dataType || "varchar",
-                displayName: col.columnLabel || col.columnName,
+                column_name: col.column_name,
+                data_type: col.data_type || "varchar",
+                display_name: col.column_label || col.column_name,
               }));
               console.log("✅ Setting REST API columns:", columnList.length, "items", columnList);
               setColumns(columnList);
@@ -228,8 +228,8 @@ export function FlowConditionBuilder({
             if (result.success && result.data) {
               const columnList = Array.isArray(result.data)
                 ? result.data.map((col: any) => ({
-                    column_name: col.column_name || col.columnName || col.name,
-                    data_type: col.data_type || col.dataType || col.type,
+                    column_name: col.column_name || col.name,
+                    data_type: col.data_type || col.type,
                   }))
                 : [];
               console.log("✅ Setting external columns:", columnList.length, "items");
@@ -372,9 +372,9 @@ export function FlowConditionBuilder({
                       >
                         {cond.column
                           ? (() => {
-                              const col = columns.find((c) => (c.column_name || c.columnName) === cond.column);
-                              const displayName = col?.displayName || col?.display_name || cond.column;
-                              const dataType = col?.data_type || col?.dataType || "";
+                              const col = columns.find((c) => c.column_name === cond.column);
+                              const displayName = col?.display_name || cond.column;
+                              const dataType = col?.data_type || "";
                               return (
                                 <span className="flex items-center gap-2">
                                   <span className="font-medium">{displayName}</span>
@@ -395,9 +395,9 @@ export function FlowConditionBuilder({
                           </CommandEmpty>
                           <CommandGroup>
                             {columns.map((col, idx) => {
-                              const columnName = col.column_name || col.columnName || "";
-                              const dataType = col.data_type || col.dataType || "";
-                              const displayName = col.displayName || col.display_name || columnName;
+                              const columnName = col.column_name || "";
+                              const dataType = col.data_type || "";
+                              const displayName = col.display_name || columnName;
 
                               return (
                                 <CommandItem
diff --git a/frontend/components/flow/FlowStepPanel.tsx b/frontend/components/flow/FlowStepPanel.tsx
index 2a7dd96e..ade4e508 100644
--- a/frontend/components/flow/FlowStepPanel.tsx
+++ b/frontend/components/flow/FlowStepPanel.tsx
@@ -215,7 +215,7 @@ export function FlowStepPanel({
             console.warn("⚠️ 예상치 못한 data 구조:", response.data);
           }
 
-          const columnNames = columnsArray.map((col: any) => col.columnName || col.column_name);
+          const columnNames = columnsArray.map((col: any) => col.column_name);
           setAvailableColumns(columnNames);
 
           console.log("✅ [FlowStepPanel] 컬럼 목록 로드 성공:", {
@@ -292,7 +292,7 @@ export function FlowStepPanel({
             const tableNames = result.data.map((t: any) => {
               console.log("🔍 Processing item:", t, "type:", typeof t);
               // tableName (camelCase), table_name, tablename, name 모두 지원
-              return typeof t === "string" ? t : t.tableName || t.table_name || t.tablename || t.name;
+              return typeof t === "string" ? t : t.table_name || t.tablename || t.name;
             });
             console.log("📋 Processed table names:", tableNames);
             setExternalTableList(tableNames);
@@ -384,9 +384,9 @@ export function FlowStepPanel({
               
               if (restApiData.columns && restApiData.columns.length > 0) {
                 const prefixedColumns = restApiData.columns.map((col) => ({
-                  column_name: config.alias ? `${config.alias}${col.columnName}` : col.columnName,
-                  data_type: col.dataType || "varchar",
-                  displayName: `${col.columnLabel || col.columnName} (${config.connectionName})`,
+                  column_name: config.alias ? `${config.alias}${col.column_name}` : col.column_name,
+                  data_type: col.data_type || "varchar",
+                  displayName: `${col.column_label || col.column_name} (${config.connectionName})`,
                 }));
                 allColumns.push(...prefixedColumns);
               }
@@ -417,9 +417,9 @@ export function FlowStepPanel({
           
           if (restApiData.columns && restApiData.columns.length > 0) {
             const columnList = restApiData.columns.map((col) => ({
-              column_name: col.columnName,
-              data_type: col.dataType || "varchar",
-              displayName: col.columnLabel || col.columnName,
+              column_name: col.column_name,
+              data_type: col.data_type || "varchar",
+              displayName: col.column_label || col.column_name,
             }));
             console.log("✅ REST API 컬럼 로드 완료:", columnList.length, "items");
             setColumns(columnList);
@@ -461,8 +461,8 @@ export function FlowStepPanel({
               // 컬럼 데이터 형식 통일
               const columnList = Array.isArray(result.data)
                 ? result.data.map((col: any) => ({
-                    column_name: col.column_name || col.columnName || col.name,
-                    data_type: col.data_type || col.dataType || col.type,
+                    column_name: col.column_name || col.name,
+                    data_type: col.data_type || col.type,
                   }))
                 : [];
               console.log("✅ Setting external columns:", columnList);
@@ -829,9 +829,9 @@ export function FlowStepPanel({
                           : formData.statusColumn
                             ? (() => {
                                 const col = columns.find(
-                                  (c) => (c.column_name || c.columnName) === formData.statusColumn,
+                                  (c) => c.column_name === formData.statusColumn,
                                 );
-                                return col ? col.column_name || col.columnName : formData.statusColumn;
+                                return col ? col.column_name : formData.statusColumn;
                               })()
                             : "상태 컬럼 선택"}
                         <ChevronsUpDown className="ml-2 h-4 w-4 shrink-0 opacity-50" />
@@ -844,8 +844,8 @@ export function FlowStepPanel({
                           <CommandEmpty>컬럼을 찾을 수 없습니다.</CommandEmpty>
                           <CommandGroup>
                             {columns.map((column, idx) => {
-                              const columnName = column.column_name || column.columnName || "";
-                              const dataType = column.data_type || column.dataType || "";
+                              const columnName = column.column_name || "";
+                              const dataType = column.data_type || "";
 
                               return (
                                 <CommandItem
diff --git a/frontend/components/layout/AdminPageRenderer.tsx b/frontend/components/layout/AdminPageRenderer.tsx
index 4e990c64..ae087212 100644
--- a/frontend/components/layout/AdminPageRenderer.tsx
+++ b/frontend/components/layout/AdminPageRenderer.tsx
@@ -30,9 +30,9 @@ function ScreenCodeResolver({ screenCode }: { screenCode: string }) {
         });
         const items = res.data?.data?.data || res.data?.data || [];
         const arr = Array.isArray(items) ? items : [];
-        const exact = arr.find((s: any) => s.screenCode === screenCode);
+        const exact = arr.find((s: any) => s.screen_code === screenCode);
         const target = exact || arr[0];
-        if (target) setScreenId(target.screenId || target.screen_id);
+        if (target) setScreenId(target.screen_id);
       } catch {
         console.error("스크린 코드 변환 실패:", screenCode);
       } finally {
diff --git a/frontend/components/mail/MailDetailModal.tsx b/frontend/components/mail/MailDetailModal.tsx
index 4d5a3840..5b35e275 100644
--- a/frontend/components/mail/MailDetailModal.tsx
+++ b/frontend/components/mail/MailDetailModal.tsx
@@ -70,7 +70,7 @@ export default function MailDetailModal({
       setMail(mailDetail);
 
       // 읽음 처리
-      if (!mailDetail.isRead) {
+      if (!mailDetail.is_read) {
         await markMailAsRead(accountId, seqno);
         onMailRead?.(); // 목록 갱신
       }
@@ -78,7 +78,7 @@ export default function MailDetailModal({
       // 이미지 첨부파일 자동 로드
       if (mailDetail.attachments) {
         mailDetail.attachments.forEach((attachment, index) => {
-          if (attachment.contentType?.startsWith('image/')) {
+          if (attachment.content_type?.startsWith('image/')) {
             loadImageAttachment(index);
           }
         });
@@ -292,7 +292,7 @@ export default function MailDetailModal({
                 </div>
                 <div className="space-y-2">
                   {mail.attachments.map((attachment, index) => {
-                    const isImage = attachment.contentType?.startsWith('image/');
+                    const isImage = attachment.content_type?.startsWith('image/');
                     
                     return (
                       <div key={index}>
diff --git a/frontend/components/numbering-rule/AutoConfigPanel.tsx b/frontend/components/numbering-rule/AutoConfigPanel.tsx
index 0586006a..66ec45c4 100644
--- a/frontend/components/numbering-rule/AutoConfigPanel.tsx
+++ b/frontend/components/numbering-rule/AutoConfigPanel.tsx
@@ -22,15 +22,15 @@ interface AutoConfigPanelProps {
 }
 
 interface TableInfo {
-  tableName: string;
-  displayName: string;
+  table_name: string;
+  display_name: string;
 }
 
 interface ColumnInfo {
-  columnName: string;
-  displayName: string;
-  dataType: string;
-  inputType?: string;
+  column_name: string;
+  display_name: string;
+  data_type: string;
+  input_type?: string;
 }
 
 export const AutoConfigPanel: React.FC<AutoConfigPanelProps> = ({
@@ -231,8 +231,8 @@ const DateConfigPanel: React.FC<DateConfigPanelProps> = ({
       const response = await tableManagementApi.getTableList();
       if (response.success && response.data) {
         const tableList = response.data.map((t: any) => ({
-          tableName: t.tableName || t.table_name,
-          displayName: t.displayName || t.table_label || t.tableName || t.table_name,
+          table_name: t.table_name,
+          display_name: t.display_name || t.table_label || t.table_name,
         }));
         setTables(tableList);
       }
@@ -251,8 +251,8 @@ const DateConfigPanel: React.FC<DateConfigPanelProps> = ({
         const rawColumns = response.data?.columns || response.data;
         // 날짜 타입 컬럼만 필터링
         const dateColumns = (rawColumns as any[]).filter((col: any) => {
-          const inputType = col.inputType || col.input_type || "";
-          const dataType = (col.dataType || col.data_type || "").toLowerCase();
+          const inputType = col.input_type || "";
+          const dataType = (col.data_type || "").toLowerCase();
           return (
             inputType === "date" ||
             inputType === "datetime" ||
@@ -263,10 +263,10 @@ const DateConfigPanel: React.FC<DateConfigPanelProps> = ({
 
         setColumns(
           dateColumns.map((col: any) => ({
-            columnName: col.columnName || col.column_name,
-            displayName: col.displayName || col.column_label || col.columnName || col.column_name,
-            dataType: col.dataType || col.data_type || "",
-            inputType: col.inputType || col.input_type || "",
+            column_name: col.column_name,
+            display_name: col.display_name || col.column_label || col.column_name,
+            data_type: col.data_type || "",
+            input_type: col.input_type || "",
           }))
         );
       }
@@ -279,13 +279,13 @@ const DateConfigPanel: React.FC<DateConfigPanelProps> = ({
 
   // 선택된 테이블/컬럼 라벨
   const selectedTableLabel = useMemo(() => {
-    const found = tables.find((t) => t.tableName === sourceTableName);
-    return found ? `${found.displayName} (${found.tableName})` : "";
+    const found = tables.find((t) => t.table_name === sourceTableName);
+    return found ? `${found.display_name} (${found.table_name})` : "";
   }, [tables, sourceTableName]);
 
   const selectedColumnLabel = useMemo(() => {
-    const found = columns.find((c) => c.columnName === sourceColumnName);
-    return found ? `${found.displayName} (${found.columnName})` : "";
+    const found = columns.find((c) => c.column_name === sourceColumnName);
+    return found ? `${found.display_name} (${found.column_name})` : "";
   }, [columns, sourceColumnName]);
 
   return (
@@ -381,12 +381,12 @@ const DateConfigPanel: React.FC<DateConfigPanelProps> = ({
                     <CommandGroup>
                       {tables.map((table) => (
                         <CommandItem
-                          key={table.tableName}
-                          value={`${table.displayName} ${table.tableName}`}
+                          key={table.table_name}
+                          value={`${table.display_name} ${table.table_name}`}
                           onSelect={() => {
                             onChange({
                               ...config,
-                              sourceTableName: table.tableName,
+                              sourceTableName: table.table_name,
                               sourceColumnName: "", // 테이블 변경 시 컬럼 초기화
                             });
                             setTableComboboxOpen(false);
@@ -396,12 +396,12 @@ const DateConfigPanel: React.FC<DateConfigPanelProps> = ({
                           <Check
                             className={cn(
                               "mr-2 h-4 w-4",
-                              sourceTableName === table.tableName ? "opacity-100" : "opacity-0"
+                              sourceTableName === table.table_name ? "opacity-100" : "opacity-0"
                             )}
                           />
                           <div className="flex flex-col">
-                            <span className="font-medium">{table.displayName}</span>
-                            <span className="text-[10px] text-muted-foreground">{table.tableName}</span>
+                            <span className="font-medium">{table.display_name}</span>
+                            <span className="text-[10px] text-muted-foreground">{table.table_name}</span>
                           </div>
                         </CommandItem>
                       ))}
@@ -450,10 +450,10 @@ const DateConfigPanel: React.FC<DateConfigPanelProps> = ({
                     <CommandGroup>
                       {columns.map((column) => (
                         <CommandItem
-                          key={column.columnName}
-                          value={`${column.displayName} ${column.columnName}`}
+                          key={column.column_name}
+                          value={`${column.display_name} ${column.column_name}`}
                           onSelect={() => {
-                            onChange({ ...config, sourceColumnName: column.columnName });
+                            onChange({ ...config, sourceColumnName: column.column_name });
                             setColumnComboboxOpen(false);
                           }}
                           className="text-xs sm:text-sm"
@@ -461,13 +461,13 @@ const DateConfigPanel: React.FC<DateConfigPanelProps> = ({
                           <Check
                             className={cn(
                               "mr-2 h-4 w-4",
-                              sourceColumnName === column.columnName ? "opacity-100" : "opacity-0"
+                              sourceColumnName === column.column_name ? "opacity-100" : "opacity-0"
                             )}
                           />
                           <div className="flex flex-col">
-                            <span className="font-medium">{column.displayName}</span>
+                            <span className="font-medium">{column.display_name}</span>
                             <span className="text-[10px] text-muted-foreground">
-                              {column.columnName} ({column.inputType || column.dataType})
+                              {column.column_name} ({column.input_type || column.data_type})
                             </span>
                           </div>
                         </CommandItem>
@@ -1130,16 +1130,16 @@ function ReferenceConfigSection({
         const allCols = response.data?.data || response.data || [];
         const entityCols = allCols.filter(
           (c: any) =>
-            (c.inputType || c.input_type) === "entity" ||
-            (c.inputType || c.input_type) === "numbering"
+            c.input_type === "entity" ||
+            c.input_type === "numbering"
         );
         setColumns(
           entityCols.map((c: any) => ({
-            columnName: c.columnName || c.column_name,
-            displayName:
-              c.columnLabel || c.column_label || c.columnName || c.column_name,
-            dataType: c.dataType || c.data_type || "",
-            inputType: c.inputType || c.input_type || "",
+            column_name: c.column_name,
+            display_name:
+              c.column_label || c.column_name,
+            data_type: c.data_type || "",
+            input_type: c.input_type || "",
           }))
         );
       } catch {
@@ -1177,11 +1177,11 @@ function ReferenceConfigSection({
           <SelectContent>
             {columns.map((col) => (
               <SelectItem
-                key={col.columnName}
-                value={col.columnName}
+                key={col.column_name}
+                value={col.column_name}
                 className="text-xs"
               >
-                {col.displayName} ({col.columnName})
+                {col.display_name} ({col.column_name})
               </SelectItem>
             ))}
           </SelectContent>
diff --git a/frontend/components/numbering-rule/NumberingRuleDesigner.tsx b/frontend/components/numbering-rule/NumberingRuleDesigner.tsx
index a37b5b25..42003fb0 100644
--- a/frontend/components/numbering-rule/NumberingRuleDesigner.tsx
+++ b/frontend/components/numbering-rule/NumberingRuleDesigner.tsx
@@ -17,10 +17,10 @@ import { apiClient } from "@/lib/api/client";
 import { cn } from "@/lib/utils";
 
 interface NumberingColumn {
-  tableName: string;
-  tableLabel: string;
-  columnName: string;
-  columnLabel: string;
+  table_name: string;
+  table_label: string;
+  column_name: string;
+  column_label: string;
 }
 
 interface GroupedColumns {
@@ -119,10 +119,10 @@ export const NumberingRuleDesigner: React.FC<NumberingRuleDesignerProps> = ({
 
   // 테이블별 그룹화
   const groupedColumns = numberingColumns.reduce<Record<string, GroupedColumns>>((acc, col) => {
-    if (!acc[col.tableName]) {
-      acc[col.tableName] = { tableLabel: col.tableLabel, columns: [] };
+    if (!acc[col.table_name]) {
+      acc[col.table_name] = { tableLabel: col.table_label, columns: [] };
     }
-    acc[col.tableName].columns.push(col);
+    acc[col.table_name].columns.push(col);
     return acc;
   }, {});
 
@@ -134,7 +134,7 @@ export const NumberingRuleDesigner: React.FC<NumberingRuleDesignerProps> = ({
       tableName.toLowerCase().includes(search) ||
       group.tableLabel.toLowerCase().includes(search) ||
       group.columns.some(
-        (c) => c.columnName.toLowerCase().includes(search) || c.columnLabel.toLowerCase().includes(search)
+        (c) => c.column_name.toLowerCase().includes(search) || c.column_label.toLowerCase().includes(search)
       )
     );
   });
@@ -339,11 +339,11 @@ export const NumberingRuleDesigner: React.FC<NumberingRuleDesignerProps> = ({
                 </div>
                 {group.columns.map((col) => {
                   const isSelected =
-                    selectedColumn?.tableName === col.tableName &&
-                    selectedColumn?.columnName === col.columnName;
+                    selectedColumn?.tableName === col.table_name &&
+                    selectedColumn?.columnName === col.column_name;
                   return (
                     <button
-                      key={`${col.tableName}.${col.columnName}`}
+                      key={`${col.table_name}.${col.column_name}`}
                       type="button"
                       className={cn(
                         "flex w-full items-center gap-2 border-b border-border/30 px-3 py-2 text-left transition-colors",
@@ -351,15 +351,15 @@ export const NumberingRuleDesigner: React.FC<NumberingRuleDesignerProps> = ({
                           ? "border-l-[3px] border-l-primary bg-primary/5 pl-2.5 font-bold"
                           : "pl-5 hover:bg-accent"
                       )}
-                      onClick={() => handleSelectColumn(col.tableName, col.columnName)}
+                      onClick={() => handleSelectColumn(col.table_name, col.column_name)}
                     >
                       <Hash className="h-3 w-3 shrink-0 text-muted-foreground" />
                       <div className="min-w-0 flex-1">
                         <div className="truncate text-xs font-semibold">
-                          {col.columnLabel || col.columnName}
+                          {col.column_label || col.column_name}
                         </div>
                         <div className="truncate text-[9px] text-muted-foreground">
-                          {col.columnName}
+                          {col.column_name}
                         </div>
                       </div>
                     </button>
diff --git a/frontend/components/report/designer/MenuSelectModal.tsx b/frontend/components/report/designer/MenuSelectModal.tsx
index 726088de..b76a1db4 100644
--- a/frontend/components/report/designer/MenuSelectModal.tsx
+++ b/frontend/components/report/designer/MenuSelectModal.tsx
@@ -92,9 +92,9 @@ export function MenuSelectModal({
     // 모든 메뉴를 노드로 변환
     menus.forEach((menu) => {
       const objid = menu.objid ?? menu.OBJID ?? "";
-      const parentObjId = menu.parentObjId ?? menu.PARENT_OBJ_ID ?? "";
-      const menuNameKor = menu.menuNameKor ?? menu.MENU_NAME_KOR ?? menu.translated_name ?? menu.TRANSLATED_NAME ?? "";
-      const menuUrl = menu.menuUrl ?? menu.MENU_URL ?? "";
+      const parentObjId = menu.parent_obj_id ?? menu.PARENT_OBJ_ID ?? "";
+      const menuNameKor = menu.menu_name_kor ?? menu.MENU_NAME_KOR ?? menu.translated_name ?? menu.TRANSLATED_NAME ?? "";
+      const menuUrl = menu.menu_url ?? menu.MENU_URL ?? "";
       const level = menu.lev ?? menu.LEV ?? 1;
 
       menuMap.set(objid, {
@@ -110,7 +110,7 @@ export function MenuSelectModal({
     // 부모-자식 관계 설정
     menus.forEach((menu) => {
       const objid = menu.objid ?? menu.OBJID ?? "";
-      const parentObjId = menu.parentObjId ?? menu.PARENT_OBJ_ID ?? "";
+      const parentObjId = menu.parent_obj_id ?? menu.PARENT_OBJ_ID ?? "";
       const node = menuMap.get(objid);
 
       if (!node) return;
diff --git a/frontend/components/screen/config-panels/ButtonDataflowConfigPanel.tsx b/frontend/components/screen/config-panels/ButtonDataflowConfigPanel.tsx
index 40434c77..43b084fe 100644
--- a/frontend/components/screen/config-panels/ButtonDataflowConfigPanel.tsx
+++ b/frontend/components/screen/config-panels/ButtonDataflowConfigPanel.tsx
@@ -124,10 +124,10 @@ export const ButtonDataflowConfigPanel: React.FC<ButtonDataflowConfigPanelProps>
             rel.label ||
             rel.title ||
             rel.description ||
-            `${rel.fromTable || rel.sourceTable || rel.source_table} → ${rel.toTable || rel.targetTable || rel.target_table}`;
+            `${rel.fromTable || rel.source_table} → ${rel.toTable || rel.target_table}`;
 
-          const sourceTable = rel.fromTable || rel.sourceTable || rel.source_table || "Unknown"; // fromTable 우선
-          const targetTable = rel.toTable || rel.targetTable || rel.target_table || "Unknown"; // toTable 우선
+          const sourceTable = rel.fromTable || rel.source_table || "Unknown"; // fromTable 우선
+          const targetTable = rel.toTable || rel.target_table || "Unknown"; // toTable 우선
 
           const mappedRel = {
             id: rel.id,
@@ -515,7 +515,7 @@ export const ButtonDataflowConfigPanel: React.FC<ButtonDataflowConfigPanelProps>
                     <strong>{selectedRelationship.targetTable}</strong>
                     {previewData && (
                       <span className="ml-2">
-                        (조건 {previewData.conditionsCount || 0}개, 액션 {previewData.actionsCount || 0}개)
+                        (조건 {previewData.conditions_count || 0}개, 액션 {previewData.actions_count || 0}개)
                       </span>
                     )}
                   </p>
diff --git a/frontend/components/screen/config-panels/DataFilterConfigPanel.tsx b/frontend/components/screen/config-panels/DataFilterConfigPanel.tsx
index 3cffffff..f294ebf2 100644
--- a/frontend/components/screen/config-panels/DataFilterConfigPanel.tsx
+++ b/frontend/components/screen/config-panels/DataFilterConfigPanel.tsx
@@ -151,8 +151,8 @@ export function DataFilterConfigPanel({
 
       if (response.success && response.data) {
         const values = response.data.map((item: any) => ({
-          value: item.valueCode,
-          label: item.valueLabel,
+          value: item.value_code,
+          label: item.value_label,
         }));
 
         console.log("✅ 카테고리 값 설정:", { columnName, valuesCount: values.length });
diff --git a/frontend/components/screen/config-panels/EntityConfigPanel.tsx b/frontend/components/screen/config-panels/EntityConfigPanel.tsx
index c4da574f..001c8944 100644
--- a/frontend/components/screen/config-panels/EntityConfigPanel.tsx
+++ b/frontend/components/screen/config-panels/EntityConfigPanel.tsx
@@ -75,14 +75,14 @@ export const EntityConfigPanel: React.FC<WebTypeConfigPanelProps> = ({
       try {
         // 테이블 타입 관리에서 컬럼 정보 조회
         const columns = await tableTypeApi.getColumns(tableName);
-        const columnInfo = columns.find((col: any) => 
-          (col.columnName || col.column_name) === columnName
+        const columnInfo = columns.find((col: any) =>
+          col.column_name === columnName
         );
 
         if (columnInfo) {
-          const refTable = columnInfo.referenceTable || columnInfo.reference_table || "";
-          const refColumn = columnInfo.referenceColumn || columnInfo.reference_column || "";
-          const dispColumn = columnInfo.displayColumn || columnInfo.display_column || "";
+          const refTable = columnInfo.reference_table || "";
+          const refColumn = columnInfo.reference_column || "";
+          const dispColumn = columnInfo.display_column || "";
 
           // detailSettings에서도 정보 확인 (JSON 파싱)
           let detailSettings: any = {};
diff --git a/frontend/components/screen/config-panels/FlowWidgetConfigPanel.tsx b/frontend/components/screen/config-panels/FlowWidgetConfigPanel.tsx
index 65cc4894..fc0cf732 100644
--- a/frontend/components/screen/config-panels/FlowWidgetConfigPanel.tsx
+++ b/frontend/components/screen/config-panels/FlowWidgetConfigPanel.tsx
@@ -102,7 +102,7 @@ export function FlowWidgetConfigPanel({ config = {}, onChange }: FlowWidgetConfi
                   </PopoverContent>
                 </Popover>
                 {selectedFlow && (
-                  <p className="text-muted-foreground mt-1 text-xs">테이블: {selectedFlow.tableName || "없음"}</p>
+                  <p className="text-muted-foreground mt-1 text-xs">테이블: {selectedFlow.table_name || "없음"}</p>
                 )}
               </>
             )}
diff --git a/frontend/components/screen/panels/TablesPanel.tsx b/frontend/components/screen/panels/TablesPanel.tsx
index 2d1da469..e686405e 100644
--- a/frontend/components/screen/panels/TablesPanel.tsx
+++ b/frontend/components/screen/panels/TablesPanel.tsx
@@ -133,8 +133,8 @@ export const TablesPanel: React.FC<TablesPanelProps> = ({
       const response = await tableManagementApi.getTableList();
       if (response.success && response.data) {
         setAllTables(response.data.map((t: any) => ({
-          tableName: t.tableName || t.table_name,
-          displayName: t.displayName || t.table_label || t.tableName || t.table_name,
+          tableName: t.table_name,
+          displayName: t.table_label || t.table_name,
         })));
       }
     } catch (error) {
diff --git a/frontend/components/screen/panels/webtype-configs/TextTypeConfigPanel.tsx b/frontend/components/screen/panels/webtype-configs/TextTypeConfigPanel.tsx
index b2f9a98a..20918a59 100644
--- a/frontend/components/screen/panels/webtype-configs/TextTypeConfigPanel.tsx
+++ b/frontend/components/screen/panels/webtype-configs/TextTypeConfigPanel.tsx
@@ -72,8 +72,8 @@ export const TextTypeConfigPanel: React.FC<TextTypeConfigPanelProps> = ({
         
         // 관리자 메뉴와 사용자 메뉴 모두 가져오기
         const [adminResponse, userResponse] = await Promise.all([
-          apiClient.get("/admin/menus", { params: { menuType: "0" } }),
-          apiClient.get("/admin/menus", { params: { menuType: "1" } })
+          apiClient.get("/admin/menus", { params: { menu_type: "0" } }),
+          apiClient.get("/admin/menus", { params: { menu_type: "1" } })
         ]);
         
         const allMenus = [
@@ -83,7 +83,7 @@ export const TextTypeConfigPanel: React.FC<TextTypeConfigPanelProps> = ({
         
         // 레벨 2 이하 메뉴만 선택 가능 (부모가 있는 메뉴)
         const parentMenuList = allMenus.filter((menu: any) => {
-          const level = menu.lev || menu.LEV || 0;
+          const level = menu.lev || 0;
           return level >= 2; // 레벨 2 이상만 표시 (형제 메뉴가 있을 가능성)
         });
         
@@ -379,8 +379,8 @@ export const TextTypeConfigPanel: React.FC<TextTypeConfigPanelProps> = ({
                         </SelectItem>
                       ) : (
                         parentMenus.map((menu) => {
-                          const objid = menu.objid || menu.OBJID;
-                          const menuName = menu.menu_name_kor || menu.MENU_NAME_KOR;
+                          const objid = menu.objid;
+                          const menuName = menu.menu_name_kor;
                           return (
                             <SelectItem key={objid} value={objid.toString()}>
                               {menuName}
diff --git a/frontend/components/screen/templates/DataTableTemplate.tsx b/frontend/components/screen/templates/DataTableTemplate.tsx
index 99171be5..651329ee 100644
--- a/frontend/components/screen/templates/DataTableTemplate.tsx
+++ b/frontend/components/screen/templates/DataTableTemplate.tsx
@@ -124,7 +124,7 @@ export const DataTableTemplate: React.FC<DataTableTemplateProps> = ({
   className = "",
   isPreview = true,
 }) => {
-  const { user } = useAuth();
+  const { user, userId: authUserId } = useAuth();
   
   // 🆕 검색 필터 관련 상태
   const [searchFilterColumns, setSearchFilterColumns] = useState<Set<string>>(new Set());
@@ -160,8 +160,8 @@ export const DataTableTemplate: React.FC<DataTableTemplateProps> = ({
   
   // 🆕 localStorage에서 필터 설정 복원
   useEffect(() => {
-    if (user?.userId && title) {
-      const storageKey = `datatable-search-filter-${user.userId}-${title}`;
+    if (authUserId && title) {
+      const storageKey = `datatable-search-filter-${authUserId}-${title}`;
       const savedFilter = localStorage.getItem(storageKey);
       if (savedFilter) {
         try {
@@ -172,17 +172,17 @@ export const DataTableTemplate: React.FC<DataTableTemplateProps> = ({
         }
       }
     }
-  }, [user?.userId, title]);
+  }, [authUserId, title]);
   
   // 🆕 필터 저장 함수
   const handleSaveSearchFilter = useCallback(() => {
-    if (user?.userId && title) {
-      const storageKey = `datatable-search-filter-${user.userId}-${title}`;
+    if (authUserId && title) {
+      const storageKey = `datatable-search-filter-${authUserId}-${title}`;
       const filterArray = Array.from(searchFilterColumns);
       localStorage.setItem(storageKey, JSON.stringify(filterArray));
       toast.success("검색 필터 설정이 저장되었습니다.");
     }
-  }, [user?.userId, title, searchFilterColumns]);
+  }, [authUserId, title, searchFilterColumns]);
   
   // 🆕 필터 토글 함수
   const handleToggleFilterColumn = useCallback((columnId: string) => {
diff --git a/frontend/components/screen/widgets/FileUpload.tsx b/frontend/components/screen/widgets/FileUpload.tsx
index 9248e944..0f41e97c 100644
--- a/frontend/components/screen/widgets/FileUpload.tsx
+++ b/frontend/components/screen/widgets/FileUpload.tsx
@@ -159,26 +159,24 @@ export function FileUpload({ component, onUpdateComponent, onFileUpload, userInf
     // isLoggedIn,
     // hasUser: !!user,
     // user: user,
-    // userId: user?.userId,
+    // user_id: user?.user_id,
     // company_code: user?.company_code,
-    // companyCode: user?.companyCode,
     // userType: typeof user,
     // userKeys: user ? Object.keys(user) : "no user",
     // userValues: user ? Object.entries(user) : "no user",
     // });
 
     // 사용자 정보가 유효하면 initialUser와 userRef 업데이트
-    if (user && user.userId) {
+    if (user && user.user_id) {
       setInitialUser(user);
       userRef.current = user; // 🎯 ref에도 최신 정보 저장
-      // console.log("✅ 초기 사용자 정보 업데이트:", { userId: user.userId, companyCode: user.companyCode });
+      // console.log("✅ 초기 사용자 정보 업데이트:", { user_id: user.user_id, company_code: user.company_code });
     }
 
     // 회사 관련 필드들 확인
     if (user) {
       // console.log("🔍 회사 관련 필드 검색:", {
       // company_code: user.company_code,
-      // companyCode: user.companyCode,
       // company: user.company,
       // deptCode: user.deptCode,
       // partnerCd: user.partnerCd,
@@ -368,8 +366,8 @@ export function FileUpload({ component, onUpdateComponent, onFileUpload, userInf
       // hasCurrentUser: !!currentUser,
       // currentUser: currentUser
       // ? {
-      // userId: currentUser.userId,
-      // companyCode: currentUser.companyCode,
+      // user_id: currentUser.user_id,
+      // company_code: currentUser.company_code,
       // company_code: currentUser.company_code,
       // }
       // : null,
@@ -396,7 +394,7 @@ export function FileUpload({ component, onUpdateComponent, onFileUpload, userInf
 
       // 사용자 정보 추가 (실시간 currentUser 사용으로 타이밍 문제 해결)
       const effectiveUser = currentUser || user || initialUser;
-      const companyCode = effectiveUser?.companyCode || effectiveUser?.company_code || effectiveUser?.deptCode;
+      const companyCode = effectiveUser?.company_code || effectiveUser?.dept_code;
 
       if (companyCode) {
         // "*"는 실제 회사코드이므로 그대로 사용
@@ -407,7 +405,7 @@ export function FileUpload({ component, onUpdateComponent, onFileUpload, userInf
         // user: user,
         // initialUser: initialUser,
         // effectiveUser: effectiveUser,
-        // companyCode: effectiveUser?.companyCode,
+        // company_code: effectiveUser?.company_code,
         // company_code: effectiveUser?.company_code,
         // deptCode: effectiveUser?.deptCode,
         // isLoading,
@@ -417,9 +415,9 @@ export function FileUpload({ component, onUpdateComponent, onFileUpload, userInf
         formData.append("companyCode", "DEFAULT");
       }
 
-      if (effectiveUser?.userId) {
-        formData.append("writer", effectiveUser.userId);
-        // console.log("✅ 작성자 추가:", effectiveUser.userId);
+      if (effectiveUser?.user_id) {
+        formData.append("writer", effectiveUser.user_id);
+        // console.log("✅ 작성자 추가:", effectiveUser.user_id);
       } else {
         // console.warn("⚠️ 사용자ID가 없음, system 사용");
         formData.append("writer", "system");
@@ -536,7 +534,7 @@ export function FileUpload({ component, onUpdateComponent, onFileUpload, userInf
           docTypeName: uploadedFileInfo.docTypeName,
           targetObjid: uploadedFileInfo.targetObjid,
           parentTargetObjid: uploadedFileInfo.parentTargetObjid,
-          companyCode: uploadedFileInfo.companyCode,
+          companyCode: uploadedFileInfo.company_code,
           writer: uploadedFileInfo.writer,
           regdate: uploadedFileInfo.regdate,
           status: uploadedFileInfo.status,
@@ -596,7 +594,7 @@ export function FileUpload({ component, onUpdateComponent, onFileUpload, userInf
         // error,
         // errorMessage: error instanceof Error ? error.message : "알 수 없는 오류",
         // errorStack: error instanceof Error ? error.stack : undefined,
-        // user: user ? { userId: user.userId, companyCode: user.companyCode, hasUser: true } : "no user",
+        // user: user ? { user_id: user.user_id, company_code: user.company_code, hasUser: true } : "no user",
         // authState: { isLoading, isLoggedIn },
         // });
 
diff --git a/frontend/components/screen/widgets/FlowWidget.tsx b/frontend/components/screen/widgets/FlowWidget.tsx
index fb2b9318..fea2ef37 100644
--- a/frontend/components/screen/widgets/FlowWidget.tsx
+++ b/frontend/components/screen/widgets/FlowWidget.tsx
@@ -85,7 +85,7 @@ export function FlowWidget({
   onFlowRefresh,
 }: FlowWidgetProps) {
   const { isPreviewMode } = useScreenPreview(); // 프리뷰 모드 확인
-  const { user } = useAuth(); // 사용자 정보 가져오기
+  const { user, userId: authUserId } = useAuth(); // 사용자 정보 가져오기
   const { registerTable, unregisterTable } = useTableOptions(); // Context 훅
 
   // TableOptions 상태
@@ -203,9 +203,9 @@ export function FlowWidget({
 
   // 🆕 localStorage 키 생성 (사용자별로 저장)
   const filterSettingKey = useMemo(() => {
-    if (!flowId || selectedStepId === null || !user?.userId) return null;
-    return `flowWidget_searchFilters_${user.userId}_${flowId}_${selectedStepId}`;
-  }, [flowId, selectedStepId, user?.userId]);
+    if (!flowId || selectedStepId === null || !authUserId) return null;
+    return `flowWidget_searchFilters_${authUserId}_${flowId}_${selectedStepId}`;
+  }, [flowId, selectedStepId, authUserId]);
 
   // 🆕 그룹 설정 localStorage 키 생성
   const groupSettingKey = useMemo(() => {
@@ -215,7 +215,7 @@ export function FlowWidget({
 
   // 🆕 저장된 필터 설정 불러오기
   useEffect(() => {
-    if (!filterSettingKey || stepDataColumns.length === 0 || !user?.userId) return;
+    if (!filterSettingKey || stepDataColumns.length === 0 || !authUserId) return;
 
     try {
       // 현재 사용자의 필터 설정만 불러오기
@@ -233,7 +233,7 @@ export function FlowWidget({
       console.error("필터 설정 불러오기 실패:", error);
       setSearchFilterColumns(new Set());
     }
-  }, [filterSettingKey, stepDataColumns, user?.userId]);
+  }, [filterSettingKey, stepDataColumns, authUserId]);
 
   // 🆕 저장된 그룹 설정 불러오기
   useEffect(() => {
diff --git a/frontend/components/v2/V2Media.tsx b/frontend/components/v2/V2Media.tsx
index f37cefc1..e116fb1b 100644
--- a/frontend/components/v2/V2Media.tsx
+++ b/frontend/components/v2/V2Media.tsx
@@ -199,7 +199,7 @@ export const V2Media = forwardRef<HTMLDivElement, V2MediaProps>((props, ref) =>
     if (!id) return false;
 
     try {
-      let screenId = formData?.screenId;
+      let screenId = formData?.screen_id;
 
       if (!screenId && typeof window !== "undefined") {
         const pathname = window.location.pathname;
@@ -268,7 +268,7 @@ export const V2Media = forwardRef<HTMLDivElement, V2MediaProps>((props, ref) =>
           GlobalFileManager.registerFiles(finalFiles, {
             uploadPage: window.location.pathname,
             componentId: id,
-            screenId: formData?.screenId,
+            screenId: formData?.screen_id,
             recordId: recordId,
           });
 
@@ -288,7 +288,7 @@ export const V2Media = forwardRef<HTMLDivElement, V2MediaProps>((props, ref) =>
     id,
     tableName,
     columnName,
-    formData?.screenId,
+    formData?.screen_id,
     formData?.tableName,
     formData?.id,
     getUniqueKey,
@@ -362,7 +362,7 @@ export const V2Media = forwardRef<HTMLDivElement, V2MediaProps>((props, ref) =>
         const effectiveTableName = recordTableName || formData?.tableName || tableName || "default_table";
         const effectiveRecordId = recordId || formData?.id;
 
-        let screenId = formData?.screenId;
+        let screenId = formData?.screen_id;
         if (!screenId && typeof window !== "undefined") {
           const pathname = window.location.pathname;
           const screenMatch = pathname.match(/\/screens\/(\d+)/);
@@ -383,7 +383,7 @@ export const V2Media = forwardRef<HTMLDivElement, V2MediaProps>((props, ref) =>
           targetObjid = `temp_${id}`;
         }
 
-        const userCompanyCode = user?.companyCode || (window as any).__user__?.companyCode;
+        const userCompanyCode = user?.company_code || (window as any).__user__?.company_code;
 
         const finalLinkedTable = effectiveIsRecordMode
           ? effectiveTableName
@@ -427,7 +427,7 @@ export const V2Media = forwardRef<HTMLDivElement, V2MediaProps>((props, ref) =>
             docTypeName: file.doc_type_name || file.docTypeName,
             targetObjid: file.target_objid || file.targetObjid,
             parentTargetObjid: file.parent_target_objid || file.parentTargetObjid,
-            companyCode: file.company_code || file.companyCode,
+            company_code: file.company_code,
             writer: file.writer,
             regdate: file.regdate,
             status: file.status || "ACTIVE",
@@ -457,7 +457,7 @@ export const V2Media = forwardRef<HTMLDivElement, V2MediaProps>((props, ref) =>
             GlobalFileManager.registerFiles(newFiles, {
               uploadPage: window.location.pathname,
               componentId: id,
-              screenId: formData?.screenId,
+              screenId: formData?.screen_id,
               recordId: recordId,
             });
 
diff --git a/frontend/components/v2/V2Select.tsx b/frontend/components/v2/V2Select.tsx
index a078ea67..3e8259ae 100644
--- a/frontend/components/v2/V2Select.tsx
+++ b/frontend/components/v2/V2Select.tsx
@@ -761,10 +761,10 @@ export const V2Select = forwardRef<HTMLDivElement, V2SelectProps>((props, ref) =
       } else if (vt === "user" && f.userField) {
         // 로그인 사용자 정보 참조 (props에서 가져옴)
         const userMap: Record<string, string | undefined> = {
-          companyCode: (props as any).companyCode,
-          userId: (props as any).userId,
+          companyCode: (props as any).company_code,
+          userId: (props as any).user_id,
           deptCode: (props as any).deptCode,
-          userName: (props as any).userName,
+          userName: (props as any).user_name,
         };
         resolvedValue = userMap[f.userField];
         if (!resolvedValue) continue;
diff --git a/frontend/lib/api/dynamicForm.ts b/frontend/lib/api/dynamicForm.ts
index c9e4cf33..15805609 100644
--- a/frontend/lib/api/dynamicForm.ts
+++ b/frontend/lib/api/dynamicForm.ts
@@ -318,14 +318,14 @@ export class DynamicFormApi {
    */
   static async getTableColumns(tableName: string): Promise<
     ApiResponse<{
-      tableName: string;
+      table_name: string;
       columns: Array<{
-        columnName: string;
-        dataType: string;
-        nullable: boolean;
-        primaryKey: boolean;
-        maxLength?: number;
-        defaultValue?: any;
+        column_name: string;
+        data_type: string;
+        is_nullable: boolean;
+        is_primary_key: boolean;
+        max_length?: number;
+        default_value?: any;
       }>;
     }>
   > {
diff --git a/frontend/lib/api/mail.ts b/frontend/lib/api/mail.ts
index b358b2b6..311a0fbe 100644
--- a/frontend/lib/api/mail.ts
+++ b/frontend/lib/api/mail.ts
@@ -611,8 +611,8 @@ export interface ReceivedMail {
   subject: string;
   date: string;
   preview: string;
-  isRead: boolean;
-  hasAttachments: boolean;
+  is_read: boolean;
+  has_attachments: boolean;
 }
 
 export interface MailDetail extends ReceivedMail {
@@ -622,7 +622,7 @@ export interface MailDetail extends ReceivedMail {
   bcc?: string;
   attachments: Array<{
     filename: string;
-    contentType: string;
+    content_type: string;
     size: number;
   }>;
 }
diff --git a/frontend/lib/api/multiConnection.ts b/frontend/lib/api/multiConnection.ts
index d5b41e43..09eb0aca 100644
--- a/frontend/lib/api/multiConnection.ts
+++ b/frontend/lib/api/multiConnection.ts
@@ -231,8 +231,8 @@ export const getColumnsFromConnection = async (connectionId: number, tableName:
     // 외부 DB 컬럼 구조를 메인 DB 형식으로 변환
     const result = Array.isArray(rawResult)
       ? rawResult.map((col: any) => {
-          const columnName = col.column_name || col.columnName || "";
-          const dataType = col.data_type || col.dataType || "unknown";
+          const columnName = col.column_name || "";
+          const dataType = col.data_type || "unknown";
 
           // 컬럼명이 '_code'로 끝나거나 'status', 'type' 등의 이름을 가진 경우 코드 타입으로 간주
           const isCodeColumn =
@@ -248,8 +248,8 @@ export const getColumnsFromConnection = async (connectionId: number, tableName:
             dataType: dataType,
             dbType: dataType,
             webType: isCodeColumn ? "code" : mapDataTypeToWebType(dataType),
-            isNullable: col.is_nullable === "YES" || col.isNullable === true,
-            columnDefault: col.column_default || col.columnDefault,
+            isNullable: col.is_nullable === "YES",
+            columnDefault: col.column_default,
             description: col.column_comment || col.description,
             // 코드 타입인 경우 카테고리 추론
             codeCategory: isCodeColumn ? inferCodeCategory(columnName) : undefined,
diff --git a/frontend/lib/api/role.ts b/frontend/lib/api/role.ts
index e6447db2..21be7dbd 100644
--- a/frontend/lib/api/role.ts
+++ b/frontend/lib/api/role.ts
@@ -6,15 +6,15 @@ import { ApiResponse } from "@/types/api";
  */
 export interface RoleGroup {
   objid: number;
-  authName: string;
-  authCode: string;
-  companyCode: string;
+  auth_name: string;
+  auth_code: string;
+  company_code: string;
   status: string;
   writer: string;
   regdate: string;
-  memberCount?: number;
-  menuCount?: number;
-  memberNames?: string;
+  member_count?: number;
+  menu_count?: number;
+  member_names?: string;
 }
 
 /**
@@ -22,10 +22,10 @@ export interface RoleGroup {
  */
 export interface RoleMember {
   objid: number;
-  masterObjid: number;
-  userId: string;
-  userName: string;
-  deptName?: string;
+  master_objid: number;
+  user_id: string;
+  user_name: string;
+  dept_name?: string;
   positionName?: string;
   writer: string;
   regdate: string;
@@ -36,13 +36,13 @@ export interface RoleMember {
  */
 export interface MenuPermission {
   objid: number;
-  menuObjid: number;
-  authObjid: number;
-  menuName?: string;
-  createYn: string;
-  readYn: string;
-  updateYn: string;
-  deleteYn: string;
+  menu_objid: number;
+  auth_objid: number;
+  menu_name?: string;
+  create_yn: string;
+  read_yn: string;
+  update_yn: string;
+  delete_yn: string;
   writer: string;
   regdate: string;
 }
@@ -54,7 +54,7 @@ export const roleAPI = {
   /**
    * 권한 그룹 목록 조회
    */
-  async getList(params?: { companyCode?: string; search?: string }): Promise<ApiResponse<RoleGroup[]>> {
+  async getList(params?: { company_code?: string; search?: string }): Promise<ApiResponse<RoleGroup[]>> {
     try {
       const response = await apiClient.get("/roles", { params });
       return response.data;
@@ -86,7 +86,7 @@ export const roleAPI = {
   /**
    * 권한 그룹 생성
    */
-  async create(data: { authName: string; authCode: string; companyCode: string }): Promise<ApiResponse<RoleGroup>> {
+  async create(data: { auth_name: string; auth_code: string; company_code: string }): Promise<ApiResponse<RoleGroup>> {
     try {
       const response = await apiClient.post("/roles", data);
       return response.data;
@@ -105,8 +105,8 @@ export const roleAPI = {
   async update(
     id: number,
     data: {
-      authName?: string;
-      authCode?: string;
+      auth_name?: string;
+      auth_code?: string;
       status?: string;
     },
   ): Promise<ApiResponse<RoleGroup>> {
@@ -159,7 +159,7 @@ export const roleAPI = {
    */
   async addMembers(roleId: number, userIds: string[]): Promise<ApiResponse<null>> {
     try {
-      const response = await apiClient.post(`/roles/${roleId}/members`, { userIds });
+      const response = await apiClient.post(`/roles/${roleId}/members`, { user_ids: userIds });
       return response.data;
     } catch (error: any) {
       return {
@@ -175,7 +175,7 @@ export const roleAPI = {
    */
   async removeMembers(roleId: number, userIds: string[]): Promise<ApiResponse<null>> {
     try {
-      const response = await apiClient.delete(`/roles/${roleId}/members`, { data: { userIds } });
+      const response = await apiClient.delete(`/roles/${roleId}/members`, { data: { user_ids: userIds } });
       return response.data;
     } catch (error: any) {
       return {
@@ -191,7 +191,7 @@ export const roleAPI = {
    */
   async updateMembers(roleId: number, userIds: string[]): Promise<ApiResponse<null>> {
     try {
-      const response = await apiClient.put(`/roles/${roleId}/members`, { userIds });
+      const response = await apiClient.put(`/roles/${roleId}/members`, { user_ids: userIds });
       return response.data;
     } catch (error: any) {
       return {
@@ -209,7 +209,7 @@ export const roleAPI = {
     try {
       console.log("🔍 [roleAPI.getAllMenus] API 호출", { companyCode });
 
-      const url = companyCode ? `/roles/menus/all?companyCode=${companyCode}` : "/roles/menus/all";
+      const url = companyCode ? `/roles/menus/all?company_code=${companyCode}` : "/roles/menus/all";
 
       const response = await apiClient.get(url);
 
diff --git a/frontend/lib/api/user.ts b/frontend/lib/api/user.ts
index 81365b74..30659ebb 100644
--- a/frontend/lib/api/user.ts
+++ b/frontend/lib/api/user.ts
@@ -87,15 +87,15 @@ export async function createUser(userData: any) {
  * 사용자 정보 수정
  */
 export async function updateUser(userData: {
-  userId: string;
-  userName?: string;
-  companyCode?: string;
-  deptCode?: string;
-  userType?: string;
+  user_id: string;
+  user_name?: string;
+  company_code?: string;
+  dept_code?: string;
+  user_type?: string;
   status?: string;
   [key: string]: any;
 }) {
-  const response = await apiClient.put(`/admin/users/${userData.userId}`, userData);
+  const response = await apiClient.put(`/admin/users/${userData.user_id}`, userData);
 
   return response.data;
 }
diff --git a/frontend/lib/registry/components/file-upload/FileUploadComponent.tsx b/frontend/lib/registry/components/file-upload/FileUploadComponent.tsx
index 73317dce..3ec7951d 100644
--- a/frontend/lib/registry/components/file-upload/FileUploadComponent.tsx
+++ b/frontend/lib/registry/components/file-upload/FileUploadComponent.tsx
@@ -384,10 +384,10 @@ const FileUploadComponent: React.FC<FileUploadComponentProps> = ({
         // 파일 데이터 형식 통일
         const formattedFiles = response.totalFiles.map((file: any) => ({
           objid: file.objid || file.id,
-          savedFileName: file.savedFileName || file.saved_file_name,
-          realFileName: file.realFileName || file.real_file_name,
-          fileSize: file.fileSize || file.file_size,
-          fileExt: file.fileExt || file.file_ext,
+          savedFileName: file.saved_file_name,
+          realFileName: file.real_file_name,
+          fileSize: file.file_size,
+          fileExt: file.file_ext,
           regdate: file.regdate,
           status: file.status || "ACTIVE",
           uploadedAt: file.uploadedAt || new Date().toISOString(),
@@ -650,7 +650,7 @@ const FileUploadComponent: React.FC<FileUploadComponentProps> = ({
         }
 
         // 🔒 현재 사용자의 회사 코드 가져오기 (멀티테넌시 격리)
-        const userCompanyCode = user?.companyCode || (window as any).__user__?.companyCode;
+        const userCompanyCode = user?.company_code || (window as any).__user__?.company_code;
         
         console.log("📤 [FileUploadComponent] 파일 업로드 준비:", {
           userCompanyCode,
@@ -716,16 +716,16 @@ const FileUploadComponent: React.FC<FileUploadComponentProps> = ({
 
           const newFiles = fileData.map((file: any) => ({
             objid: file.objid || file.id,
-            savedFileName: file.saved_file_name || file.savedFileName,
-            realFileName: file.real_file_name || file.realFileName || file.name,
-            fileSize: file.file_size || file.fileSize || file.size,
-            fileExt: file.file_ext || file.fileExt || file.extension,
-            filePath: file.file_path || file.filePath || file.path,
-            docType: file.doc_type || file.docType,
-            docTypeName: file.doc_type_name || file.docTypeName,
-            targetObjid: file.target_objid || file.targetObjid,
-            parentTargetObjid: file.parent_target_objid || file.parentTargetObjid,
-            companyCode: file.company_code || file.companyCode,
+            savedFileName: file.saved_file_name,
+            realFileName: file.real_file_name || file.name,
+            fileSize: file.file_size || file.size,
+            fileExt: file.file_ext || file.extension,
+            filePath: file.file_path || file.path,
+            docType: file.doc_type,
+            docTypeName: file.doc_type_name,
+            targetObjid: file.target_objid,
+            parentTargetObjid: file.parent_target_objid,
+            companyCode: file.company_code,
             writer: file.writer,
             regdate: file.regdate,
             status: file.status || "ACTIVE",
diff --git a/frontend/lib/registry/components/modal-repeater-table/RepeaterTable.tsx b/frontend/lib/registry/components/modal-repeater-table/RepeaterTable.tsx
index e9df58d5..e397fa9b 100644
--- a/frontend/lib/registry/components/modal-repeater-table/RepeaterTable.tsx
+++ b/frontend/lib/registry/components/modal-repeater-table/RepeaterTable.tsx
@@ -140,8 +140,8 @@ export function RepeaterTable({
 
           if (response.data?.success && response.data.data) {
             const options = response.data.data.map((item: any) => ({
-              value: item.valueCode || item.value_code,
-              label: item.valueLabel || item.value_label || item.displayValue || item.display_value || item.label,
+              value: item.value_code,
+              label: item.value_label || item.display_value || item.label,
             }));
             setCategoryOptionsMap((prev) => ({
               ...prev,
diff --git a/frontend/lib/registry/components/pivot-grid/PivotGridConfigPanel.tsx b/frontend/lib/registry/components/pivot-grid/PivotGridConfigPanel.tsx
index e05a154e..dd920ba5 100644
--- a/frontend/lib/registry/components/pivot-grid/PivotGridConfigPanel.tsx
+++ b/frontend/lib/registry/components/pivot-grid/PivotGridConfigPanel.tsx
@@ -291,8 +291,8 @@ export const PivotGridConfigPanel: React.FC<PivotGridConfigPanelProps> = ({
       try {
         const tableList = await tableTypeApi.getTables();
         const mappedTables: TableInfo[] = tableList.map((t: any) => ({
-          table_name: t.tableName,
-          table_comment: t.tableLabel || t.displayName || t.tableName,
+          table_name: t.table_name,
+          table_comment: t.table_label || t.display_name || t.table_name,
         }));
         setTables(mappedTables);
       } catch (error) {
@@ -316,10 +316,10 @@ export const PivotGridConfigPanel: React.FC<PivotGridConfigPanelProps> = ({
       try {
         const columnList = await tableTypeApi.getColumns(config.dataSource.tableName);
         const mappedColumns: ColumnInfo[] = columnList.map((c: any) => ({
-          column_name: c.columnName || c.column_name,
-          data_type: c.dataType || c.data_type || "text",
-          // 라벨 우선순위: displayName > comment > columnLabel > columnName
-          column_comment: c.displayName || c.comment || c.columnLabel || c.column_label || c.columnName || c.column_name,
+          column_name: c.column_name,
+          data_type: c.data_type || "text",
+          // 라벨 우선순위: display_name > comment > column_label > column_name
+          column_comment: c.display_name || c.comment || c.column_label || c.column_name,
         }));
         setColumns(mappedColumns);
       } catch (error) {
diff --git a/frontend/types/external-call/ExternalCallTypes.ts b/frontend/types/external-call/ExternalCallTypes.ts
index e38e76dc..c5868852 100644
--- a/frontend/types/external-call/ExternalCallTypes.ts
+++ b/frontend/types/external-call/ExternalCallTypes.ts
@@ -163,7 +163,7 @@ export interface ApiExecutionResult extends ApiTestResult {
 export interface ExternalCallContext {
   relationshipId: string;
   diagramId: string;
-  userId: string;
+  user_id: string;
   executionId: string;
   sourceData: Record<string, any>;
   targetData?: Record<string, any>;