To help you learn and test Oracle Rdb features, Oracle Rdb
    provides online files that you can execute to create the
    following sample databases:

    o  personnel

       The personnel database is a single-file database.

    o  mf_personnel

       The mf_personnel database is a multifile database.

    o  corporate_data

       The corporate_data database is a single-file database that
       demonstrates the use of the multischema feature of SQL.

    The personnel and mf_personnel databases contain the same
    domains, tables, and columns. The corporate_data database
    contains slightly different domains, tables, and columns.