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Database Systems: Concepts, Design and Applications by S. K. Singh

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Review Questions

1.Discuss the different types of transaction failures that may occur in a database environment.
2.What is database recovery? What is meant by forward and backward recovery? Explain with an example.
3.How does the recovery manager ensure atomicity and durability of transactions?
4.What is the difference between stable storage and disk?
5.Describe how the transaction log file is a fundamental feature in any recovery mechanism.
6.What is the difference between a system crash and media failure?
7.Describe how transaction log file is used in forward and backward recovery.
8.Explain with the help of examples why it is necessary to store transaction log records in a stable storage before committing that transaction when immediate update ...

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