Introducing .NET 4.0: with Visual Studio 2010

8.6. EFv1 Criticisms

ORM frameworks are a subject many people feel strongly about, and EF received a huge amount of criticism when it was first released. A number of developers even set up a petition web site called ADO.NET Entity Framework Vote of No Confidence to highlight to Microsoft their concerns about EF's design. The criticisms are well worth a read and can still be viewed at http://efvote.wufoo.com/forms/ado-net-entity-framework-vote-of-no-confidence.

The main criticisms most have of EFv1 are that

• EF is too focused on the data aspects of an ORM framework and neglects other areas—for example, validation and transactions.

• EF lacks support for persistence ignorance (EF is too tightly coupled to the underlying data store).

• EF has too many ...