Copies the data from a specified table or view of the database
    into one of the following:

    o  A specially structured file that contains both the data and
       the metadata (.unl).

    o  An RMS file that contains data only (.unl). This file is
       created when you specify the Record_Definition qualifier.
       (The Record_Definition qualifier also creates a second file,
       with file extension .rrd, that contains the metadata.)

    Data from the specially structured file can be reloaded by using
    the RMU Load command only. Data from the RMS file can be reloaded
    using the RMU Load command or by using an alternative utility
    such as is offered by DATATRIEVE.