6.1 (10 points)Create a data model with five entities. Use the data items on the form to specify
identifiers and attributes for those entities.
Note that all Correction Notices have as their identifier an identifying number that is not shown in
the figure, and have an independent existence whether or not they are filled in. The alternative
would be a composite identifier (such as Month, Date, Year, Time). But this is so cumbersome
that even without a preexisting NoticeNumber we’d use a surrogate identifier.
6.2 (10 points)Design a database for your model. Your design should include a specification of tables
and attributes as well as primary, candidate, and foreign keys. Also specify how you will enforce
minimum cardinality. Document your minimum cardinality enforcement using referential
integrity actions for required parents, if any, and the form in table for required children, if any.
END OF EXAM