How to: Add Related Tables to Diagrams
You can quickly add to a database diagram all of the tables that are involved in a relationship with a selected table.
Note
The dialog boxes and menu commands you see might differ from those described in Help depending on your active settings or edition. To change your settings, choose Import and Export Settings on the Tools menu. For more information, see Visual Studio Settings.
To add related tables to a diagram
Add the table with relationships to a database diagram.
Right-click the table and from the shortcut menu and click Add Related Tables.