Navigational structure diagram
Navigation structure diagrams are used in the design stage to provide an overview of how the entire system will link together and how the user is expected to navigate between different interfaces.
Navigation structure diagrams are especially important when there is more than one way to navigate your database or website.
A simple example for an order processing database can be seen below:
This example shows how the user can access different parts of the database. For instance, if the user wants to delete a product they must go to the product interface on the main menu.