Question 7 Consider following schedules involving two transactions: S1 : r1(X); r1(Y); r2(X); r2(Y); w2(Y); w1(X) S2 : r1(X); r2(X); r2(Y); w2(Y); r1(Y); w1(X) Which of […]

Question 9 If every non-key attribute is functionally dependent on the primary key, then the relation is in __________ . A First normal form B Second […]

Question 2 Which statement is false regarding data Independence : A Hierarchical data model suffers from data Independence. B Network model suffers from data Independence. C […]

Question 87 Which of the following statements is wrong ? A 2-phase Locking Protocols suffer from dead locks. B Time – Stamp Protocols suffer from more […]