The native .NET Framework data provider for SQL Server is used for connecting to the SQL Server databases.
The .NET Framework Data Provider for SQL Server provides access to a SQL Server 7.0 or later using its own internal protocol. It is lightweight and performs well because it is optimized to access a SQL Server directly without adding an OLE DB or Open Database Connectivity (ODBC) layer.
This section describes information about connection string parameters for SQL Server and data type mapping table.