Design a database suitable for a university registrar. this database should include information about students, departments, professors, courses, which students are enrolled in which courses, which professors are teaching which courses, student grades, ta's for a course (ta's are students), which courses a department o ers, and any other information you deem appropriate. note that this question is more free-form than the questions above, and you need to make some decisions about multiplicities of relationships, appropriate types, and even what information needs to be represented.