Question 584 Let R ={A, B, C, D, E, F} be a relation schema with the following dependencies C → F, E → A, EC → […]

Question 585 A clustering index is created when _______. A primary key is declared and ordered B no key ordered C foreign key ordered D there […]

Question 586 Which of the following statements is false ? A Any relation with two attributes is in BCNF. B A relation in which every key […]

Question 587 Views are useful for _____ unwanted information, and for collecting together information from more than one relation into a single view. A Hiding B […]