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Last week I gave a talk at Qcon London entitled

ORM, EDM, ESQL, Entity Framework, LINQ to SQL, LINQ to Entities - confused?

In the session I wanted to make a few points worth summarising here:

  • ORM usage by Windows Developers is low compared to other platforms
    • I believe this will change significantly now Microsoft has an offering
  • ORM can be very productive but also dangerous
    • I showed a demo which looked at lazy vs eager vs explicit loading vs projection
  • Entity Framework is more than an ORM – the ORM bit is just the most visible part
    • Entity Data Model is the core and can be used directly using ESQL
  • Microsoft product teams are picking up dependencies on Entity Framework
    • Therefore it is safe for you to do so
  • Entity Framework v1 has its problems, especially:
    • In the designer (runtime in general is very good)
    • And for certain ORM approaches – POCO, Model first etc
  • Entity Framework v2 will respond to these problems
  • Entity Framework v1 can and is being used successfully

Some links:



Posted on Monday, March 16, 2009 2:10 PM .NET 3.5 , Data , Events/Training , UK | Back to top

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