| OLE DB | ODBC | Oracle | SqlServer |
|---|---|---|---|
| OleDbConnection | OdbcConnection | OracleConnection | SqlConnection |
| OleDbCommand | OdbcCommand | OracleCommand | SqlCommand |
| OleDbDataReader | OdbcDataReader | OracleDataReader | SqlDataReader |
| OleDbDataAdapter | OdbcDataAdapter | OracleDataAdapter | SqlDataAdapter |