ASP.NET Tutorial/ADO.net Database/Provider Classes

The ADO.NET Data Provider Classes

SQL Server Data Provider      OLE DB Data Provider         Oracle Data Provider          ODBC Data Provider
Connection        SqlConnection                 OleDbConnection              OracleConnection              OdbcConnection
Command           SqlCommand                    OleDbCommand                 OracleCommand                 OdbcCommand
DataReader        SqlDataReader                 OleDbDataReader              OracleDataReader              OdbcDataReader
DataAdapter       SqlDataAdapter                OleDbDataAdapter             OracleDataAdapter             OdbcDataAdapter