Consider the tables R (A, B, C), T(D,E,F), S(G, H) and U(A,D, G, I)whe

1.	Consider the tables R (A, B, C), T(D,E,F), S(G, H) and U(A,D, G, I)where A, D and G inU are foreign keys referring to the primary keys with the same names.Show aninitialquery tree for the following query and optimize it using the rules ofheuristics:select B, E, G, H, Ifrom R, T, S, Uwhere R.A = U.Aand T.D = U.D and S. G = U.Gand RC = 'TEXT' and U.I > 20 and T.E = 25
Answer» ANSWER: NICE QUANTITY of questions Explanation: kkkkkkkkkkkkkkkkkkkkkkkkk kkkkkkkkkkkkkkkkkkkkkkkkk kkkkkkkkkkkkkkkkkkkkkkkkk kkkkkkkkkkkkkkkkkkkkkkkkk you are not the

Consider the tables R (A, B, C), T(D,E,F), S(G, H) and U(A,D, G, I)where A, D and G inU are foreign keys referring to the primary keys with the same names.Show aninitialquery tree for the following query and optimize it using the rules ofheuristics:select B, E, G, H, Ifrom R, T, S, Uwhere R.A = U.Aand T.D = U.D and S. G = U.Gand RC = 'TEXT' and U.I > 20 and T.E = 25

Answer»

NICE QUANTITY of questions

Explanation:

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