Please answer 2. a),b),c) with RA TRC DRC on each question.

Where subject can be Math, English, CS, Physics, etc. Now, write the Relational Algebra (RA), Tuple Relational Calculus (TRC), and Domain Relational Calculus (DRC) to answer each of the following queries. Note that some of these queries might not be expressible in Relational Algebra or Relational Calculus. For such queries, informally explain why they cannot be expressed a. Find the names of students who are enrolled in some Math or CS courses. b. Find the sid(s) of the student(s) who enrolled in all the CS classes. 2) (45 pts) Consider the following relational schema: Factory(fid, fname, region) Suppliers (sid, sname, region, commission) Parts (pid, pname, color) Catalog (sid, pid, cost) a. Find the names of suppliers that provide "Car part" ie., with pname "Car part" b. Identify the factories that are in the same region as that of a supplier whose commission is less than 10%. c. Find the names of the suppliers who supply the largest number of parts