diff --git a/backend/apps/datasource/crud/table.py b/backend/apps/datasource/crud/table.py
new file mode 100644
index 0000000..f76d5fa
--- /dev/null
+++ b/backend/apps/datasource/crud/table.py
@@ -0,0 +1,21 @@
+from common.core.deps import SessionDep
+from ..models.datasource import CoreDatasource, CreateDatasource, CoreTable, CoreField, ColumnSchema
+from sqlalchemy import and_
+
+
+def delete_table_by_ds_id(session: SessionDep, id: int):
+    session.query(CoreTable).filter(CoreTable.ds_id == id).delete(synchronize_session=False)
+    session.commit()
+
+
+def get_tables_by_ds_id(session: SessionDep, id: int):
+    return session.query(CoreTable).filter(CoreTable.ds_id == id).order_by(
+        CoreTable.table_name.asc()).all()
+
+
+def update_table(session: SessionDep, item: CoreTable):
+    record = session.query(CoreTable).filter(CoreTable.id == item.id).first()
+    record.checked = item.checked
+    record.custom_comment = item.custom_comment
+    session.add(record)
+    session.commit()