DBMS MCQ Questions and Answer Set-4

DBMS-MCQ
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) 2. Which of the following is not a property of transactions? (A) Atomicity (B) Concurrency (C) Isolation (D) Durability Ans: (B) 3. Checkpoints are a part of (A) Recovery measures. (B) Security measures. (C ) Concurrency measures. (D) Authorization measures. A...
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