Option <str> is not supported by this version and has been
  downgraded to <str>

  Explanation:  The listed option is not supported by this Rdb or
  CDD version, the command is attempted using supported option.

  User Action:  In many cases the downgraded c;lause may succeed,
  if not then you must use an alternate clause that is supported.
  Note that CDD Repository does not support CASCADE for all
  objects and so DROP may fail if attached by PATHNAME.  Try
  attaching by FILENAME and repeating the operation.