Using the PSQL function in a linux terminal solve.

PART3

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15. Write the Relational Algebra query which represents the conceptual evaluation strategy as presented in class and Chapter 5 of the following SQL query (as opposed any query which returns the same results). You must use only the basic RA operators. SELECT C.CNAME, B.TITLE FROM Customer C, BOOk B, Order O, Orderlist OL WHERE C.CID = O.CID AND O.Ordernum = OL.Ordernum AND OL.ISBN = B.ISBN AND B.Price >=100