diff --git a/backend/app/engine/loaders/db.py b/backend/app/engine/loaders/db.py
index 69d3279..63a7c02 100644
--- a/backend/app/engine/loaders/db.py
+++ b/backend/app/engine/loaders/db.py
@@ -168,14 +168,14 @@ def get_db_documents(configs: list[DBLoaderConfig]):
         engine = create_engine(entry.uri)
         sql_database = SQLDatabase(engine)
 
-        table_schema_objs = makeDescriptionByEngine(sql_database)
-        table_node_mapping = SQLTableNodeMapping(sql_database)
-
-        nodes = table_node_mapping.to_nodes(table_schema_objs)
-        for node in nodes:
-            node.metadata.update(metadata)
-
-        docs.extend(nodes)
+        # table_schema_objs = makeDescriptionByEngine(sql_database)
+        # table_node_mapping = SQLTableNodeMapping(sql_database)
+        #
+        # nodes = table_node_mapping.to_nodes(table_schema_objs)
+        # for node in nodes:
+        #     node.metadata.update(metadata)
+        #
+        # docs.extend(nodes)
 
         queries = entry.queries or []
         loader = CustomDatabaseReader(sql_database)
diff --git a/backend/app/xinference/base.py b/backend/app/xinference/base.py
index 92f87e1..54cb16d 100644
--- a/backend/app/xinference/base.py
+++ b/backend/app/xinference/base.py
@@ -155,8 +155,8 @@ class XinferenceRerank(BaseNodePostprocessor):
         description="The model description from Xinference."
     )
     _generator: Any = PrivateAttr()
-    _model_uid: str
-    _endpoint: str
+    _model_uid: str = Field(description="The Xinference model to use.")
+    _endpoint: str = Field(description="The Xinference endpoint URL to use.")
     model: str = Field(description="Dashscope rerank model name.")
     top_n: int = Field(description="Top N nodes to return.")
     threshold: float = Field(description="threshold nodes to return.")