Database System Concepts
7th Edition
ISBN: 9781260084504
Author: Abraham Silberschatz, S. Sudarshan, Abraham, Henry Korth, Silberschatz Abraham, Silberschatz Professor
Publisher: McGraw-Hill Education
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Expert Solution & Answer
Chapter 19, Problem 10PE
Explanation of Solution
Dealing with the difficulty:
Recovery schemes are normally used for detecting failures and restoring the
It is more difficult to recover from interactive transactions than batch transactions because of the following reasons:
- Some actions in interactive transactions cannot be recovered.
- For example, consider a write statement used by an ATM machine to dispense money to a customer.
- One way to deal with such statements are by writing all the statements at the end of the transaction.
- Hence, no harm will be done even if the transaction aborts anywhere from the beginning to the end...
Expert Solution & Answer
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