Write queries in relational algebra that return the following:

1) The course numbers in which a student had a better exam mark  than lab mark.

2) The names of the lecturers who are tutoring a student who had an  exam mark worse than the lab mark.

3) The names of the lecturers who are tutoring a 3rd year student.

4) The room numbers of the lecturers who are tutoring a 3rd year student.

5) The names of the tutors who are tutoring more than one student

6) The names of the tutors who are tutoring no more than one student

Answer rating: 100% (QA)

Relational Algebra Queries 1 The course numbers in which a student had a better test mark than lab m... View the full answer