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This post covers a new Entity Framework extension called Code Only. Code Only allows you to use the Entity Framework using POCO entities and without an EDMX file, i.e. with ‘Code Only’. This walkthrough shows you how to use the first release of Code Only, which is a very early and limited preview of our long term plans for Code Only. To get an idea of where Code Only is heading look at this post on the EF Design Blog.
Code Only ships as part of the Microsoft Entity Framework Feature CTP 1. The CTP works on top of the latest version of the Entity Framework released as part of .NET 4.0 Beta1, and you can download it here.