Define two additional schemas that could be added to the schemas for the university database shown in Figure 2.1. List all the relationships between these two new schemas and the existing ones.

Figure 2.1 Schema diagram for the database in Figure 1.2. STUDENT Name Student number Class Major COURSE PREREQUISITE Course_number Prerequisite_number SECTION Section_identifier Course number Semester Year Instructor GRADE REPORT Student_number Section_identifier Grade