Question: how do you answer B 2. ( 10 points) Consider the following database schema Flight (Source, Destination) Hub (City) Q1(A,B):Flight(A,C),Hub(C),Flight(C,B),Hub(B)Q2(A,B):Flight(A,C),Hub(C),Flight(C,B) (a) (5 points) Use the

how do you answer B

2. ( 10 points) Consider the following database schema Flight (Source, Destination) Hub (City) Q1(A,B):Flight(A,C),Hub(C),Flight(C,B),Hub(B)Q2(A,B):Flight(A,C),Hub(C),Flight(C,B) (a) (5 points) Use the conjunctive query containment algorithm to show that Q1 Q2 (b) (5 points) Unfold the following query Q3(A,B):Q1(A,C),Q2(C,B)

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