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Suppose we have R1 (A) which contains 1,2,3 as attribute A, R2(A) which contains 1,4,5 as attribute A, and R3 (A) which contains 1,2,6 as

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Suppose we have R1 (A) which contains 1,2,3 as attribute A, R2(A) which contains 1,4,5 as attribute A, and R3 (A) which contains 1,2,6 as attribute A. Using the tables mentioned, determine if R1 (R2 U R3) (R1 R2) U (R1 R3) is violated. (a) Yes, it is violated. (b) No, it is not violated

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