Stores the current database root Unique Identifier value into the
    current storage area file or storage area snapshot file header
    for the storage area with the specified name or number when the
    user executes the next COMMIT command.

    Any changes to the area header Unique Identifier values will
    only be written to the actual area files when the next "COMMIT"
    command is executed at the "RdbALTER>" prompt. Any changes to the
    area file headers since the last "COMMIT" command was issued can
    be undone by executing the "ROLLBACK" command at the "RdbALTER>"
    prompt. "COMMIT" and "ROLLBACK" are existing RMU/ALTER commands
    and affect any current uncommitted changes made in RMU/ALTER, not
    just changes to the storage area header Unique Identifier values.

    To execute the DEPOSIT AREA_HEADER command, the user must be
    attached to the database which the root and areas belong to,
    either by specifying the database name when issuing the RMU/ALTER
    command or by executing the "ATTACH" command from the "RdbALTER>"
    prompt.