PERSON SSN Name Address Gender Date Of Birth EMPLOYEE ALUMNUS STUDENT Salary Date Hired Major Dept {Degree(Year, Designation, Date)} d d FACULTY STAFF GRADUATE STUDENT UNDERGRAD STUDENT Rank Position Test Score Class Standing Add a subtype discriminator for each of the supertypes shown in Figure 3-10. Show the discriminator values that assign instances to each subtype. Use the following subtype discriminator names and values: a. PERSON: Person Type (Employee? Alumnus? Student?) b. EMPLOYEE: Employee Type (Faculty, Staff) C. STUDENT: Student Type (Grad, Undergrad)