Using the original ORM model that you created, add a Manufacturer role that has an inverse relationship with the Products role.
The question you should use is
Manufacturers create Products
The inverse relationship is
Products are created by Manufacturers
Add a few value references for the Manufacturer role, such as ManufacturerName, ManufacturerCity, and so on. You should also add an entity reference called ManufacturerID for the Manufacturer object.
After you've done that, re-create the database diagram and re-create the ORM_Test database in SQL Server.
In Visio, use the Reverse Engineer option from the Database menu in a new Database Diagram project. Reverse-engineer the Northwind database in your MSDE database, and study how the database was created based on the conceptual model that was reverse-engineered.