Question 535 Data warehousing refers to A storing data offline at a separate site B backing up data regularly C is related to data mining D […]

Question 537 The number of disk accesses performed by insertion operation in B-tree of height ‘h’ is A O(1) B O(lgh) C O(h) D None of […]

Question 538 Decomposition help in eliminating some of the problems of bad design A Redundancy B Inconsistencies C Anomalies D All of the above Database-Management-SystemNormalizationUGC NET […]

Question 539 A transaction can include following basic database access operations : A Read_item(X) B Write_item(X) C Both (A) and (B) D None of these Database-Management-SystemTransactionsUGC […]