LINQ to SQL

LINQ to SQL: .NET Language-Integrated Query for Relational Data http://msdn.microsoft.com/library/bb425822.aspx

Generic SQL access:

http://msdn.microsoft.com/en-us/library/system.data.common.dbcommand.aspx
http://msdn.microsoft.com/en-us/library/system.data.common.dbconnection.aspx