The DICTIONARY IS [NOT] REQUIRED clause determines whether the
    database must be invoked by path name for data definition changes
    to occur. If you specify the DICTIONARY IS REQUIRED option,
    the database must be invoked by path name to change metadata
    and the data dictionary will be maintained. If you specify the
    DICTIONARY IS NOT REQUIRED option, the database can be invoked by
    either file name or path name to change metadata. The default is
    DICTIONARY IS NOT REQUIRED.

    The DICTIONARY IS [NOT] USED clause determines whether the
    definition of the database and definitions of database elements
    will be stored in the data dictionary. If you specify the
    DICTIONARY IS USED option, the definition of the database and
    definitions of database elements will be stored in the data
    dictionary. If you specify the DICTIONARY IS NOT USED option,
    no definitions will be stored in the data dictionary. The default
    is DICTIONARY IS USED.

    You receive an error message if you specify incompatible options,
    such as the DICTIONARY IS REQUIRED option and the DICTIONARY IS
    NOT USED option.