Question 844 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 842 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 50 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) ; […]

Question 254 A magnetic tape drive has transport speed of 200 inches per second and a recording density of 1600 bytes per inch. The time required […]