Q. 38 Information about a collection of students is given by the relation studInfo
(studId, name, sex). The relation enroll (studID, CourseId) gives which student
has enrolled for (or taken) what course(s). Assume that every course is taken
by at least one male and at least one female student. What does the following
relational algebra expression represent?
(A) Courses in which all the female students are enrolled
(B) Courses in which a proper subset of female students are enrolled
(C) Courses in which only male students are enrolled
(D) None of the above.
Answer: (B)
Explanation:
