Question 14 Consider the following dependencies : AB → CD, AF → D, DE → F, C → G, F → E, G → A Which […]

Question 17 The overall logical structure of a database can be expressed graphically by: A Entity relationship model B Relation model C Object based model D […]

Question 35 Match the following A:Secondary Index B:Non-procedural Query language C:Closure of a Set of Attributes D:Natural-join I. Functional Dependency II. B-Tree III. Domain Calculus IV. […]

Question 34 Given two union compatible R1(A,B) and R2(C, D). What is the result of the operations R1 A = C AB = DR2? A R1∪R2 […]