ODBC Using SQLColumns

rc = SQLColumns (... "UnknownTable" ...);
 
/* This call to SQLColumns will generate a query to the 
   system catalogs... possibly a join which must be
   prepared, executed, and produce a result set */
 
rc = SQLBindCol (...);
rc = SQLExtendedFetch (...);  
 
/* User must retrieve N rows from the server.
   N = # result columns of UnknownTable
   result column information has now been obtained. */