The DELETE DATABASE command deletes the physical RMS database
    (CDD$FILE) from disk and its CDD$DATABASE element from the
    repository.

    When you issue the DELETE DATABASE command, CDO prompts you
    to confirm that you want to proceed. You cannot suppress
    this prompt. If you respond Yes at the prompt, CDO deletes
    the highest visible version of CDD$FILE and, if you have not
    specified another version number, the highest visible version of
    CDD$DATABASE.

    If CDO cannot delete the physical RMS file from disk, the
    DELETE DATABASE command fails, and the CDD$DATABASE and CDD$FILE
    elements remain in the repository.