Makes a copy of a database in an intermediate form. Use the
    IMPORT statement to rebuild an Oracle Rdb database from the
    interchange file (.rbr file extension) created by the EXPORT
    statement.

    You use the EXPORT statement with the IMPORT statement to make
    changes to Oracle Rdb databases that cannot be made any other
    way. The EXPORT statement unloads a database to an .rbr file. The
    IMPORT statement creates the database again with the changes that
    are both allowed and not allowed through ALTER statements. See
    the IMPORT statement for more information.