The following programs demonstrate the use of the MISSING and
    NOT MISSING conditional expressions. These programs form a record
    stream containing the records in the COLLEGES relation that have
    nothing stored in the field STATE, but do have a college code
    stored in the field COLLEGE_CODE. Each record in the COLLEGES
    relation is tested for the above condition; if a record meets the
    condition these programs print an informational message and the
    college code of the newest record added to the record stream.