Database System Concepts
7th Edition
ISBN: 9789332901384
Author: Henry F. Korth & S. Sudarshan Abraham Silberschatz
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 19, Problem 23E
Explanation of Solution
Crash during recovery:
- In the given figure, the logs have no checkpoint, so recovery would start from the beginning of the logs.
- Redo phase:
- The contents of the undo list are T0, T1 as the start records for both of them exist but not their commit or abort records.
- The redo phase would end up adding the log records given below:
0, B, 2050>,
0, C, 600>,
1, C, 400>
0, C, 500>
- Undo phase
- Scan the...
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