Database Systems: Design, Implementation, Management, Loose-leaf Version
Database Systems: Design, Implementation, Management, Loose-leaf Version
12th Edition
ISBN: 9781305866799
Author: Coronel, Carlos; Morris, Steven
Publisher: Course Technology
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Chapter 10, Problem 4P
Program Plan Intro

Lock:

Lock is the process that ensures the unique use of data item for particular transaction. If the data item is locked by one transaction, the other transactions cannot use the data item until the first transaction unlocks the data item.

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