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Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482

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Section
BuyFindarrow_forward

Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482
Chapter 10, Problem 10RQ
Textbook Problem
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Why might a page-level lock be preferred over a field-level lock?

Program Plan Intro

Page-level:

  • It locks the entire diskpage of the system. The diskpage is otherwise called as diskblock.
  • A table has several pages of one or more tables. It is a suitable process of multi-user environment.

Field-level:

The process of field level lock is to lock a field in one row. It is a suitable process of multi-user environment and it also requires high level of computer overhead.

Explanation of Solution

Reason for page-level lock is preferred over a field-level lock:

  • The page-level lock requires smaller lock granularity. The meaning of smaller lock granularity contain more locks that must be maintained and managed by DBMS, and smaller lock system requires more processing overhead and system resources for lock management...

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