For each of the following collections of relations, give the assumptions concerning the relationship between students, courses, and faculty members that are implied by the collection. In each relation, only the primary keys are shown.
a. Student (StudentNum, CourseNum, FacultyNum)
b. Student (StudentNum, CourseNum) Faculty (CourseNum, FacultyNum)
c. Student (StudentNum, CourseNum) Faculty (CourseNum, FacultyNum) StudentFaculty (StudentNum, FacultyNum)
d. Student (StudentNum, CourseNum, FacultyNum)
e. Student (StudentNum, CourseNum) Faculty (CourseNum, FacultyNum) StudentFaculty (StudentNum, FacultyNum)
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