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Each Question carries 2 marks.
Choosethe correct or the best alternative in the following:
Q.1 Which of the following relational algebra operations do not require the participating
tables to be union-compatible?
(A) Union (B) Intersection
(C) Difference (D) Join
Ans: (D)
Q.2 Which of the following is not a property of transactions?
(A) Atomicity (B) Concurrency
(C) Isolation (D) Durability
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