Question: 8. Assume a database schema consists of two relations R(A,B,C) and S(D,E). Consider the following queries in relational algebra: (a) A,C(D=2(RA=ES)) (b) A,C(RA=E(D=2S)) Are algebraic

8. Assume a database schema consists of two relations R(A,B,C) and

8. Assume a database schema consists of two relations R(A,B,C) and S(D,E). Consider the following queries in relational algebra: (a) A,C(D=2(RA=ES)) (b) A,C(RA=E(D=2S)) Are algebraic expressions (a) and (b) equivalent? Use no more than two sentences to explain your

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