diff --git a/api/models/dataset.py b/api/models/dataset.py
index 327c9503420..ad9d1d97817 100644
--- a/api/models/dataset.py
+++ b/api/models/dataset.py
@@ -922,18 +922,10 @@ class DocumentSegment(TypeBase):
     stopped_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True, default=None)
     hit_count: Mapped[int] = mapped_column(sa.Integer, nullable=False, default=0)
 
-    @property
-    def dataset(self) -> Dataset | None:
-        return self.get_dataset(session=db.session())
-
     def get_dataset(self, *, session: Session) -> Dataset | None:
         """Load the owning dataset with the caller-owned database session."""
         return session.get(Dataset, self.dataset_id)
 
-    @property
-    def document(self) -> Document | None:
-        return self.get_document(session=db.session())
-
     def get_document(self, *, session: Session) -> Document | None:
         """Load the owning document with the caller-owned database session."""
         return session.get(Document, self.document_id)
@@ -952,10 +944,6 @@ class DocumentSegment(TypeBase):
             )
         )
 
-    @property
-    def child_chunks(self):
-        return self.get_child_chunks(session=db.session(), include_full_doc=False)
-
     def get_child_chunks(self, *, session: Session, include_full_doc: bool = True) -> Sequence["ChildChunk"]:
         """Load hierarchical child chunks with the caller-owned database session."""
         document = session.get(Document, self.document_id)
@@ -1042,10 +1030,6 @@ class DocumentSegment(TypeBase):
 
         return text
 
-    @property
-    def attachments(self) -> list[AttachmentItem]:
-        return self.get_attachments(session=db.session())
-
     def get_attachments(self, *, session: Session) -> list[AttachmentItem]:
         """Load attachment metadata with the caller-owned database session."""
         # Use JOIN to fetch attachments in a single query instead of two separate queries
@@ -1195,10 +1179,6 @@ class DatasetQuery(TypeBase):
         DateTime, nullable=False, server_default=sa.func.current_timestamp(), init=False
     )
 
-    @property
-    def queries(self) -> list[dict[str, Any]]:
-        return self.get_queries(session=db.session())
-
     def get_queries(self, *, session: Session) -> list[dict[str, Any]]:
         try:
             queries = json.loads(self.content)
@@ -1467,7 +1447,7 @@ class ExternalKnowledgeApis(TypeBase):
             return None
 
     @property
-    def dataset_bindings(self) -> list[DatasetBindingItem]:
+    def dataset_bindings(self):
         return self.get_dataset_bindings(session=db.session())
 
     def get_dataset_bindings(self, *, session: Session) -> list[DatasetBindingItem]:
diff --git a/api/tests/test_containers_integration_tests/models/test_dataset_models.py b/api/tests/test_containers_integration_tests/models/test_dataset_models.py
index d817894b1de..939e87d8695 100644
--- a/api/tests/test_containers_integration_tests/models/test_dataset_models.py
+++ b/api/tests/test_containers_integration_tests/models/test_dataset_models.py
@@ -322,7 +322,7 @@ class TestDocumentSegmentNavigationProperties:
         db_session_with_containers.flush()
 
         # Act
-        related_dataset = segment.dataset
+        related_dataset = segment.get_dataset(session=db_session_with_containers)
 
         # Assert
         assert related_dataset is not None
@@ -369,7 +369,7 @@ class TestDocumentSegmentNavigationProperties:
         db_session_with_containers.flush()
 
         # Act
-        related_document = segment.document
+        related_document = segment.get_document(session=db_session_with_containers)
 
         # Assert
         assert related_document is not None