October 3, 2023
Question 26 Which level of locking provides the highest degree of concurrency in a relational database? A Page B Table C Row D Page, table and […]
October 3, 2023
Question 14 Consider the relations r1(P, Q, R) and r2(R, S, T) with primary keys P and R respectively. The relation r1 contains 2000 tuples and r2 contains […]
October 3, 2023
Question 22 Consider two relations R1(A,B) with the tuples (1,5), (3,7) and R2(A,C) = (1,7), (4,9). Assume that R(A,B,C) is the full natural outer join of […]
October 3, 2023
Question 4 Which of the following is NOT a superkey in a relational schema with attributes V, W, X, Y, Z and primary key VY? A […]
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