Work with XML Data Type in SQL Server 2005 from ADO.NET 2.0
One of the excellent features of the next release of SQL Server, known as SQL Server 2005, is its deep XML integration with the SQL Server database engine. This integration goes well beyond the simple relational-to-XML mapping layer that SQL Server 2000 provided. SQL Server 2005 will feature a native XML data type that will allow you to store native XML data in SQL Server itself.