백엔드 오류 수정

backend-node/prisma/schema.prisma

@@ -3968,6 +3968,9 @@ model table_relationships {
   updated_date      DateTime? @db.Timestamp(6)
   updated_by        String?   @db.VarChar(50)
   diagram_id        Int?
+
+  // 역방향 관계
+  bridges           data_relationship_bridge[]
 }
 
 model data_relationship_bridge {
@@ -3990,6 +3993,9 @@ model data_relationship_bridge {
   to_key_value     String?   @db.VarChar(500)
   to_record_id     String?   @db.VarChar(100)
 
+  // 관계 정의
+  relationship     table_relationships? @relation(fields: [relationship_id], references: [relationship_id])
+
   @@index([connection_type], map: "idx_data_bridge_connection_type")
   @@index([company_code, is_active], map: "idx_data_bridge_company_active")
 }