The Microsoft Entity Data Model (EDM), based on Dr. Peter Chen's Entity Relationship (ER) model, is the driving force behind the ADO.NET Entity Framework. The EDM is also the feature that most significantly differentiates the Entity Framework from other ORM-style technologies in the marketplace.

In the July 2008 issue of MSDN Magazine, Elisa Flasko takes you on a tour of the ADO.NET Entity Framework and provides a deeper understanding of how and why choices were made during development.

Don't forget to browse the sample code in our online code library.