diff --git a/backend-node/src/services/dataflowService.ts b/backend-node/src/services/dataflowService.ts
index a7e45747..3c167e48 100644
--- a/backend-node/src/services/dataflowService.ts
+++ b/backend-node/src/services/dataflowService.ts
@@ -56,63 +56,27 @@ export class DataflowService {
         );
       }
 
-      // 트랜잭션으로 관계 생성과 단순 키값 연결 처리
-      const result = await prisma.$transaction(async (tx) => {
-        // 1. 새 관계 생성
-        const relationship = await tx.table_relationships.create({
-          data: {
-            relationship_name: data.relationshipName,
-            from_table_name: data.fromTableName,
-            from_column_name: data.fromColumnName,
-            to_table_name: data.toTableName,
-            to_column_name: data.toColumnName,
-            relationship_type: data.relationshipType,
-            connection_type: data.connectionType,
-            company_code: data.companyCode,
-            settings: data.settings,
-            created_by: data.createdBy,
-            updated_by: data.createdBy,
-          },
-        });
-
-        // 2. 단순 키값 연결인 경우 data_relationship_bridge에도 기본 레코드 생성
-        if (data.connectionType === "simple-key") {
-          logger.info(
-            `단순 키값 연결이므로 data_relationship_bridge에 기본 연결 레코드 생성 - 관계ID: ${relationship.relationship_id}`
-          );
-
-          await tx.data_relationship_bridge.create({
-            data: {
-              relationship_id: relationship.relationship_id,
-              from_table_name: data.fromTableName,
-              from_column_name: data.fromColumnName,
-              to_table_name: data.toTableName,
-              to_column_name: data.toColumnName,
-              connection_type: data.connectionType,
-              company_code: data.companyCode,
-              bridge_data: {
-                autoCreated: true,
-                createdAt: new Date().toISOString(),
-                notes: "단순 키값 연결 - 테이블과 컬럼 관계만 정의",
-                connectionInfo: `${data.fromTableName}.${data.fromColumnName} ↔ ${data.toTableName}.${data.toColumnName}`,
-                settings: data.settings,
-              },
-              created_by: data.createdBy,
-            },
-          });
-
-          logger.info(
-            `단순 키값 연결 기본 레코드 생성 완료 - 관계ID: ${relationship.relationship_id}`
-          );
-        }
-
-        return relationship;
+      // 새 관계 생성 (중계 테이블은 별도로 생성하지 않음)
+      const relationship = await prisma.table_relationships.create({
+        data: {
+          relationship_name: data.relationshipName,
+          from_table_name: data.fromTableName,
+          from_column_name: data.fromColumnName,
+          to_table_name: data.toTableName,
+          to_column_name: data.toColumnName,
+          relationship_type: data.relationshipType,
+          connection_type: data.connectionType,
+          company_code: data.companyCode,
+          settings: data.settings,
+          created_by: data.createdBy,
+          updated_by: data.createdBy,
+        },
       });
 
       logger.info(
-        `DataflowService: 테이블 관계 생성 완료 - ID: ${result.relationship_id}`
+        `DataflowService: 테이블 관계 생성 완료 - ID: ${relationship.relationship_id}`
       );
-      return result;
+      return relationship;
     } catch (error) {
       logger.error("DataflowService: 테이블 관계 생성 실패", error);
       throw error;
diff --git a/frontend/components/dataflow/ConnectionSetupModal.tsx b/frontend/components/dataflow/ConnectionSetupModal.tsx
index 79c4553b..b23f7f4f 100644
--- a/frontend/components/dataflow/ConnectionSetupModal.tsx
+++ b/frontend/components/dataflow/ConnectionSetupModal.tsx
@@ -248,12 +248,6 @@ export const ConnectionSetupModal: React.FC<ConnectionSetupModalProps> = ({
                   className="text-sm"
                 />
               </div>
-              <div className="rounded-lg bg-blue-50 p-3 text-xs text-blue-700">
-                <div className="mb-1 font-medium">🔄 통합 중계 테이블 사용</div>
-                <div>
-                  모든 데이터 연결은 <code>data_relationship_bridge</code> 테이블에서 통합 관리됩니다.
-                </div>
-              </div>
             </div>
           </div>
         );