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ADO.NET EFx beta3 and Designer Tools CTP

1-> ADO.NET Entiry Framework Bet3
https://www.microsoft.com/downloads/details.aspx?FamilyId=15DB9989-1621-444D-9B18-D1A04A21B519&displaylang=en

2-> ADO.Net Entity Framework Tools Dec 07 Community Technology Preview
https://www.microsoft.com/downloads/details.aspx?FamilyId=D8AE4404-8E05-41FC-94C8-C73D9E238F82&displaylang=en

3-> Visual Studio XML Editor QEF
https://go.microsoft.com/fwlink/?LinkID=104985

Ref
Microsoft Simplifies Data-Centric Development in Heterogeneous IT Environments
https://www.microsoft.com/presspass/press/2007/dec07/12-06EntityBeta3PR.mspx

Entity Framework Beta 3 - Breaking Changes
https://blogs.msdn.com/adonet/pages/breaking-changes-entity-framework-beta-3.aspx

ADO.NET Entity Framework Beta 3 Document
https://msdn2.microsoft.com/en-us/library/bb739441(VS.90).aspx

Running the Entity Framework Beta 3 Samples
https://www.codeplex.com/adonetsamples/

DP MSDN Homepage
https://msdn2.microsoft.com/zh-cn/data/default(en-us).aspx