The following programs demonstrate the use of the CROSS clause to
    join records from two relations (a non-equijoin). These programs
    join the relations CURRENT_JOB and JOBS over their common field
    JOB_CODE. This allows these programs to print a report that
    contains fields from both relations. Specifically, these fields
    are: LAST_NAME from the CURRENT_JOBS relation, JOB_CODE from the
    JOBS relation, and JOB_TITLE from the JOBS relation.