Professors may work on or manage multiple projects 7. Grad students may work on several projects, and thus may have several supervisors. Departments have a dept name, dept number, and a main office. Departments have a chairman who is also a professor. Professors work on one or more departmentts and for each department that they work in, a time percentage is associated with their job.
Grad students have one major dept in which they are enrolled for their degree.
Exercise 2.5 Notown Records. Each musician has an SSN, a name and address and a phone. No address has more than one phone and musicians may share an address. EAch song recorded has a title and an author 5. Each musician may play several instruments and an instrument may be played on by several musicians.