digramId를 사용해 제어 관계 그룹화

frontend/lib/api/dataflow.ts

@@ -39,6 +39,7 @@ export interface TableInfo {
 
 export interface TableRelationship {
   relationship_id?: number;
+  diagram_id?: number; // 새 관계도 생성 시에는 optional
   relationship_name: string;
   from_table_name: string;
   from_column_name: string;
@@ -89,7 +90,7 @@ export interface TableDataResponse {
 
 // 관계도 정보 인터페이스
 export interface DataFlowDiagram {
-  relationshipId: number;
+  diagramId: number;
   diagramName: string;
   connectionType: string;
   relationshipType: string;
@@ -173,7 +174,9 @@ export class DataFlowAPI {
   /**
    * 테이블 관계 생성
    */
-  static async createRelationship(relationship: Omit<TableRelationship, "relationshipId">): Promise<TableRelationship> {
+  static async createRelationship(
+    relationship: any, // 백엔드 API 형식 (camelCase)
+  ): Promise<TableRelationship> {
     try {
       const response = await apiClient.post<ApiResponse<TableRelationship>>(
         "/dataflow/table-relationships",
@@ -435,11 +438,11 @@ export class DataFlowAPI {
     }
   }
 
-  // 특정 관계도의 모든 관계 조회 (relationship_id로)
-  static async getDiagramRelationshipsByRelationshipId(relationshipId: string): Promise<TableRelationship[]> {
+  // 특정 관계도의 모든 관계 조회 (diagram_id로)
+  static async getDiagramRelationshipsByDiagramId(diagramId: number): Promise<TableRelationship[]> {
     try {
       const response = await apiClient.get<ApiResponse<TableRelationship[]>>(
-        `/dataflow/relationships/${relationshipId}/diagram`,
+        `/dataflow/diagrams/${diagramId}/relationships`,
       );
 
       if (!response.data.success) {