For the following relational model: Student(sid, fname, Iname, gpa) Course ( cid, code, name, credithours) Enrolled (sid, cid,grade) Write SQL queries for the following: 1. Print all the students by the name order desc by the gpa. 2. Print all the computer sciences courses, these courses with code start with 'CS' sorted alphabetically. 3. Print all the students with a gpa less than 3.0 4. Print all the students with a gpa of a least 3.0 5. Find all students that have enrolled in database course 6. Find all students that have enrolled in database and network courses 7. Find all the students that have (A or more) at least once