Question 656 The E-R model is expressed in terms of : (i) Entities (ii) The relationship among entities (iii) The attributes of the entities Then A […]

Question 44 Which of the following concurrency protocol ensures both conflict serializability and freedom from deadlock? (a) Z-Phase Locking (b) Timestamp ordering A Both (a) and […]

Question 6 Drop Table cannot be used to drop a Table referenced by __________ constraint. (a)Primary key (b)Sub key (c)Super key (d)Foreign key A (a) B […]

Question 686 ​ The order of a leaf node in a B​ +​ tree is the maximum number of children it can have. Suppose that block […]