Question: 9. Here are three relations, R(a,b). S(a.b), and T(a,b). Their current values are R S T a b ab a b Compute the result of

9. Here are three relations, R(a,b). S(a.b), and T(a,b). Their current

9. Here are three relations, R(a,b). S(a.b), and T(a,b). Their current values are R S T a b ab a b Compute the result of the quer y: SELECT R.a, R.b, S.b, T.b FROM R, S, T WHERE R.b-S.a AND S.b>T.b Identify, in the list below, the true statement about whether or not a tuple appears in the output, and how many times it appears Oa) (0,0,0,0) appears once appears once. ) (1,0,0,0) does not appear O d) (0,1,1,1) appears twice

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