To date, Microsoft ORM has not received a very strong welcome among the programming community with version 4 going towards the way of unusable. However Entity Framework 5 warrants a second look with previously missing features such as a new EF Code-First which enables a very useful code-centric development work-flow while working with data, no need to define XML mapping files and more.
Entity Framework, Microsoft's object-relational mapping framework for .NET gets a an update
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