Consider the following relational schema: Department(deptid, dname, location) Student(snum, sname, deptid, age) Faculty(fid, fname, deptid) Class(cname deptid, meets at, room, faculty) Enrolled(snum, cname, score, grade) Assume that: All students and faculty members must major/work in one depart- ment; - Faculty teach courses only in the department they belong to; - The names of the courses are unique for each department Scores are numbers in [0,100]; Faculty in Table Class is a subset of fid in Table Faculty. Write each of the following queries using Query-by-Example (QBE). If you believe any one of the following is not expressible in QBE, informally ex- plain why it cannot be expressed. 1. (15 pts) Print the names of the department(s) that have more courses 2. (10 pts) Print the ids and names of the students along with their 3. (15 pts) Print the names of the faculty members who instruct at least than the CS department(deptid-101). scores and grades in each course they have enrolled two courses