Microsoft ADO.NET A set of classes that expose data access services to the .NET programmer. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnanchor/html/adonetanchor.asp

ADO.NET/C# Database Programming Directory with source code sample, articles, tutorials, and tips concerning ADO.NET/C# database programming. http://www.c-sharpcorner.com/Database.asp