Database System Concepts
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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Chapter 18, Problem 6PE

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Access-protection mechanism

  • The access protection mechanism is used to implement page level locking.
  • First reads operation is considered.
  • A process is allowed to read a page only after it read-locks the page.
  • It is implemented by using mprotect for initially turning off read permissions to all pages, for the process.
  • When the process tries to access an address in a page, then there occurs a protection violation...

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