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In some that includes both business logic and data-access logic.

In this tutorial you will create separate classes for business logic and for data-access logic.

NET Web Forms applications using the Entity Framework 4.0 and Visual Studio 2010.

In this tutorial, you will use the designer's Update Model From Database tool to update the data model automatically.

In Visual Studio, open the Contoso University web application you created in the Getting Started with the Entity Framework and Web Forms tutorial series, and then open the table, but no foreign key relationship is defined in the database.

In the Foreign Key Relationships box click Add, then click the ellipsis for Tables and Columns Specification.

In the Tables and Columns dialog box, set the primary key table and field to table if that person is a department administrator.