Consider the following relational schema: Course (cid, cname, dept, credit) Student (sid, sname, dept, gpa) Enroll (cid, sid, grade, semester) The meaning of these relations is straightforward and the keys are underlined. Write the following queries in SQL. d) Find the name s of students who took courses offered by CS department and no other department. e) Find the names of all classes that have 10 or more students enrolled.

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