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. a) List all the students who never got a grade above ‘C’. b) Find the number of students not enrolled in any class. c) Find name of students in EE department who took all the courses offered by CS department.

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Single Table

In a database management system, a single table is designed to obtain data of heterogeneous items. A single-table design with DynamoDB resolves the issue of raising multiple requests for the relevant data of an entity.