MDAC 2.5 SDK - ODBC Desktop Database Drivers

SQLGetInfo

SQLGetInfo supports the SQL_FILE_USAGE information type. The returned value is a 16-bit integer that indicates how the driver directly treats files in a data source:

• SQL_FILE_NOT_SUPPORTED—The driver is not a single-tier driver.
  
  
• SQL_FILE_TABLE—A single-tier driver treats files in a data source as tables.
  
  
• SQL_FILE_QUALIFIER—A single-tier driver treats files in a data source as a qualifier.

The ODBC driver returns SQL_FILE_TABLE for the Text driver, because each file is a table.