To determine whether a driver supports a particular function, call EDSGetFunctions. Note that EDSGetFunctions is implemented solely by the Driver Manager and can be called for any driver, regardless of its conformance level.
To determine the SQL conformance level of a driver, call EDSGetInfo with the EDS_ODBC_SQL_CONFORMANCE flag. For further information, refer to the Description section of the EDSGetInfo command reference.
To determine whether a driver supports a specific SQL data type, call EDSGetTypeInfo.