diff --git a/en/device-dev/website.md b/en/device-dev/website.md
index 193059b2703af86a54dea9e98244bb0eb052c5eb..5cebc561328f432802f2b0ae5a8d6f11f23483d4 100644
--- a/en/device-dev/website.md
+++ b/en/device-dev/website.md
@@ -394,13 +394,6 @@
   - AI
      - [AI Framework Development](subsystems/subsys-ai-aiframework-devguide.md)
      - [NNRt Development](subsystems/subsys-ai-nnrt-guide.md)
-  -  Data Management
-     - RDB
-       - [RDB Overview](subsystems/subsys-data-relational-database-overview.md)
-       - [RDB Development](subsystems/subsys-data-relational-database-guide.md)
-     - Lightweight Data Store
-       - [Lightweight Data Store Overview](subsystems/subsys-data-storage-overview.md)
-       - [Lightweight Data Store Development](subsystems/subsys-data-storage-guide.md)
   -  Sensor
      - [Sensor Overview](subsystems/subsys-sensor-overview.md)
      - [Sensor Usage Guidelines](subsystems/subsys-sensor-guide.md)