Course
gre. advises. Grad. Professor. ssn. (1,1). (0,20). isa. name. major. isa. Student. Ugrad. isa. Person. (0,*). enrolls. grade. gpa. (0,*). (0,*). Semester. Course. title. Cou#. semesterid. Enrolls-not-a-set: -4 Student must be ugrad or grad: -0
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