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how fo you answer 4. (10 points) Consider the following conjunctive query Q1(X):R(X,Y),R(Y,Z) (a) (5 points) Write a conjunctive query Q2(X) such that Q2Q1 (b)
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4. (10 points) Consider the following conjunctive query Q1(X):R(X,Y),R(Y,Z) (a) (5 points) Write a conjunctive query Q2(X) such that Q2Q1 (b) (5 points) Write a conjunctive query Q3(X) such that Q1Q3 Step by Step Solution
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