Question 334 Consider the following transactions with data items X and y initialized to zero : T1: read x; read (y) if x=0 then y≔y+1; write […]

Question 336 Which one of the following statements is FALSE? A A relation with two attributes is in BCNF B Lossless dependency preserving decomposition into BCNF […]

Question 337 ___________ operator is used to retain the unmatched rows of relations when they joined. A Outer join B Inner join C Natural join D […]