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Entity Framework 6

Entity Framework 6 (EF6) is an object-relational mapper that enables .NET developers to work with relational data using domain-specific objects. It eliminates the need for most of the data-access code that developers usually need to write.

Entity Framework 6 is developed by the Entity Framework team in collaboration with a community of open source developers.

EF6 here, EF Core elsewhere

This repository is for the Entity Framework 6 runtime and Visual Studio tools. Entity Framework Core is a lightweight and extensible version of Entity Framework and is maintained at

EF6 PowerTools development has moved

Further development of the EF6 PowerTools is happening in a community-driven project, the EF6 PowerTools Community Edition.

How do I use EF

If you want to use an officially supported Entity Framework release to develop your applications then head to where you can find installation information, documentation, tutorials, samples, and videos.

If you want to try out the latest changes that have not been officially released yet, you can choose to build the code. We regularily also make nightly builds of the Entity Framework codebase available.

How do I contribute

There are lots of ways to contribute to the Entity Framework project including testing out nighty builds, reporting bugs, and contributing code.

All code submissions will be rigorously reviewed and tested by the Entity Framework team, and only those that meet an extremely high bar for both quality and design/roadmap appropriateness will be merged into the source.


This is the codebase for the Entity Framework 6 and LINQ-To-SQL designers.



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