Database Systems: Design, Implementation, & Management
Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 10, Problem 12RQ

Explanation of Solution

Exclusive lock:

It is a lock type which is used to enforce the concurrency control of the transaction. Exclusive lock is issued when the data item want to update and not processed by any of the transaction. It does not allow other transactions to access the database.

Circumstances of exclusive lock to be granted:

  • The exclusive lock exists in the object when the access of data item specifically reserved for a transaction...

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