Changes an existing storage map. A storage map controls which
    rows of a table are stored in which storage areas in a multifile
    database.

    In addition to changing storage maps, the ALTER STORAGE MAP
    statement has options that change the following:

    o  Which index the database system uses when inserting rows in
       the table

    o  Whether or not the rows of the table are stored in a
       compressed format

    o  Whether or not the data is reorganized

    o  Whether partitioning keys can be modified

    o  Whether logging the transaction containing the ALTER statement
       is journaled to the RUJ and AIJ files.