Ado.Net Data Services Astoria

http://archive.msdn.microsoft.com/usingastoria
http://archive.msdn.microsoft.com/dataservices
http://msdn.microsoft.com/library/cc907912.aspx
Samples
http://www.codeguru.com/csharp/csharp/net30/article.php/c16231/An-ADONET-Data-Services-Tutorial.htm
http://adodataservtutorial.codeplex.com/
http://msdn.microsoft.com/ru-ru/library/cc668792(v=vs.103).aspx
http://msdn.microsoft.com/ru-ru/library/cc668794(v=vs.103).aspx
http://msdn.microsoft.com/ru-ru/library/hh525392(v=vs.103).aspx

The ADO.NET Data Service was renamed WCF Data Service in November 2009