If unspecified and a value is specified for the Server Name option, the driver looks for the path name of the Interfaces file in the Registry under HKEY_LOCAL_MACHINE\SOFTWARE\DataDirect\InterfacesFile. If this Registry value is empty, the driver will try to open the SQL.INI file found in the same directory where the driver is located and use it as the Interfaces file.
Notes
This option and the Network Address option are mutually exclusive.