Draw the entities and relationships suggested by each word problem. Include the proper foreign key(s). Remember to make a copy for yourself.

A course may have many sections or not be offered at all (no sections). Sections always belong to a single course. Students take at least one and often multiple sections during a semester. We want to capture a students grade and, if that grade is an F, last date attended. Courses have a CID, course name and department. Sections have a CRN, a room and a time. Sections have no students, or many students. Students have a CWID, name and year (like Sophomore).