student ID dept nante akes ID course id sec id sennester ear tot cred rade sectio17 course department advisor itle dept name credits semester ET building OO no fine siot id building budget time slot end tim instructor ID depi nanme prereg classroo eaches ID sec id salary Express answers to 3-9 in relational algebra. Your queries should NOT include unneeded relations. a. Find the ID's of all instructors who have taught or are teaching a course from a different department than the one to which they are assigned. For example, the result would include Electrical Engineering professors who teach Computer Science courses. (10 points) Find the names of all instructors who have taught the same course more than once. (10 points) C Find the titles of all courses that have been taught in every semester/year. (10 points) d. Rewrite your answer to problem 6 using only fundamental operations. (10 points) e. List all buildings/rooms in which a Computer Science class has NOT been taught. (10 points) f. List all of the names of all instructors who were once students at the university. Note: you will need to make an assumption in order to write this query. State your assumption. (10 points) student ID dept nante akes ID course id sec id sennester ear tot cred rade sectio17 course department advisor itle dept name credits semester ET building OO no fine siot id building budget time slot end tim instructor ID depi nanme prereg classroo eaches ID sec id salary Express answers to 3-9 in relational algebra. Your queries should NOT include unneeded relations. a. Find the ID's of all instructors who have taught or are teaching a course from a different department than the one to which they are assigned. For example, the result would include Electrical Engineering professors who teach Computer Science courses. (10 points) Find the names of all instructors who have taught the same course more than once. (10 points) C Find the titles of all courses that have been taught in every semester/year. (10 points) d. Rewrite your answer to problem 6 using only fundamental operations. (10 points) e. List all buildings/rooms in which a Computer Science class has NOT been taught. (10 points) f. List all of the names of all instructors who were once students at the university. Note: you will need to make an assumption in order to write this query. State your assumption. (10 points)