Question 894 BCNF is not used for cases where a relation has A Two (or more) candidate keys B Two candidate keys and composite C The […]

Question 807 Which of the following is a fundamental operation in relational algebra? A Set intersection B Assignment C Natural Join D None of the above […]

Question 743 In conservative two phase locking protocol, a transaction A Should release all the locks only at beginning of transaction B Should release exclusive locks […]