4.12 Specify the following queries in SQL on the database schema of Figure 1.2 a. Retrieve the names of all senior students majoring in 'CS (computer sci- b. Retrieve the names of all courses taught by Professor King in 2007 and c. For each section taught by Professor King, retrieve the course number, ence). 2008. semester, year, and number of students who took the section. d. Retrieve the name and transcript of each senior student (Class -4) majoring in CS. A transcript includes course name, course number, credit hours, semester, year, and grade for each course completed by the student