Remove Tables from Database Diagrams (Visual Database Tools)
You can remove a table from your database diagram. Removing a table does not alter your database. The table and its relationships to other tables continue to exist in the database.
To remove a table from a database diagram
In your database diagram, select the table you want to remove.
Right-click the table and choose Remove Table from Diagram from the shortcut menu.
Press the ESC key.
If the table has unsaved changes as a result of edits you made in the database diagram, a message prompts you to save the table before removing it.
The table is removed from your diagram but it continues to exist in the database.