Posted by: Harold Ennulat | January 5, 2010

Entity Framework

Entity Framework Map

From the previous post, here is a picture of how the “Entity Framework” fits in to the data access model.

The Entity Framework is an abstraction layer (an Object/Relational Mapping (ORM) framework) that allows the developer to write queries at the application level that are independent of the actual data queries.  In this way when different database engines are used only the Entity Framework code needs to be modified.  The applications can remain unchanged.
 
A complete introduction is found at “http://msdn.microsoft.com/en-us/data/aa937709.aspx
 
The Entity Framework uses the Entity Data Model (EDM) to describe the application-specific object or “conceptual” model against which the developer programs.
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