The string types below (if present) reflect the actual data type of the database field - CStringA for ANSI datatypes and ...

// The string types below (if present) reflect the actual data type of the
// database field - CStringA for ANSI datatypes and CStringW for Unicode
// datatypes. This is to prevent the ODBC driver from performing potentially
// unnecessary conversions.  If you wish, you may change these members to
// CString types and the ODBC driver will perform all necessary conversions.
// (Note: You must use an ODBC driver version that is version 3.5 or greater
// to support both Unicode and these conversions).