EF 4.3 Beta1—released yesterday—integrates Code First Migrations into the EntityFramework NuGet package. Part of this integration means that databases created with Code First no longer include the EdmMetadata table. The databases are instead setup to work directly with Migrations making it easy to migrate the database in the future even if this need is not anticipated when the database is first created. But what exactly happens behind the scenes? And what is the update experience for databases that already contain EdmMetadata? This post goes into some detail to answer these questions.
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