ADO.NET in SQLCLR
By now, each one of you must be tired of hearing that SQL Server 2005 hosts the CLR and that you can write various types of objects like procedures, triggers etc in managed code. ADO.NET has been significantly enhanced to keep pace with the changes in SQL Server 2005 capabilities and this article from Pablo Castro This discusses how managed code can use ADO.NET when running inside SQL Server 2005 using the new SQLCLR feature:
Managed Data Access with ADO.NET.