Question 570 Which of the following is true ? A A relation in BCNF is always in 3NF. B A relation in 3NF is always in […]

Question 571 For a database relation R(a, b, c, d) where the domains of a, b, c and d include only atomic values, and only the […]

Question 573 A many-to-one relationship exists between entity sets r1 and r2. How will it be represented using functional dependencies if Pk(r) denotes the primary key […]

Question 575 Consider the following schedules involving two transactions. S1: r1(X) ; r1(Y) ; r2(X) ; r2(Y) ; w2(Y) ; w1(X) S2 : r1(X) ; r2(X) […]