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Database Systems: Design, Implemen...

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

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Chapter
Section
BuyFindarrow_forward

Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482
Chapter 12, Problem 11RQ
Textbook Problem
504 views

Explain the need for the two-phase commit protocol. Then describe the two phases.

Explanation of Solution

Two-phase commit protocol:

The two-phase commit protocol is used to make sure that the transaction atomicity and database consistency in addition to integrity in distributed transaction.

The need of this protocol helps to make sure that the database changes form remote site is coincided. If not, each and every transaction is undone to sustain a consistent database.

There are two phases in two-phase commit protocol. They are,

  • Preparation
  • The final COMMIT

Phase 1: Preparation

  • The coordinator transfers the message from PREPARE TO COMMIT to all subordinates...

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