Explanation:Time-stamp ordering protocol ensures conflict serializability and safety from deadlocks. 5. Which of the following is the block that is not permitted to be written back to the disk?
A. Dead code
B. Read only
C. Pinned
D. Zapped
Answer:A
Explanation:Time-stamp ordering protocol ensures conflict serializability and safety from deadlocks. 5. Which of the following is the block that is not permitted to be written back to the disk?
A. Dead code B. Read only C. Pinned D. Zapped
Explanation: A block that is not permitted to be written back to the disk is called pinned. 6. If transaction Ti gets an explicit lock on the file Fc in exclusive mode, then it has an ­­­­­­__________ on all the records belonging to that file.