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Principles of Information Systems ...

12th Edition
Ralph Stair + 1 other
Publisher: Cengage Learning
ISBN: 9781285867168

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BuyFindarrow_forward

Principles of Information Systems ...

12th Edition
Ralph Stair + 1 other
Publisher: Cengage Learning
ISBN: 9781285867168
Chapter 5, Problem 3DQ
Textbook Problem
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Briefly describe the ACID properties to which an SQL database must conform. Identify one advantage and one disadvantage associated with ACID conformance.

Explanation of Solution

ACID:

The acronym ACID stands for “Atomicity”, “Consistency”, “Isolation” and “Durability”. It is an important concept of DBMS which allows sharing of data safely. It is applied to all the transactions.

Atomicity:

Atomicity describes the first ACID property. The phase which contains in atomicity is “all or nothing”. It implies that when an update occurs, either all the transactions are committed to the database or none of the transactions gets updated to the database.

  • Only a fragment of the update cannot be done into the database.
  • It is retained in the presence of deadlocks.
  • It is maintained in the presence of database software failure or the application software failure.
  • It is carried over whenever there is a disk failure or CPU failure.

Consistency:

A transaction which proceeds to the valid state of data or if any failure occurs it returns all the data to its state at the point where the transaction begins.

  • It stands for correctness and ensures that any transaction will carry the database from one valid to state to another valid state...

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Chapter 5 Solutions

Principles of Information Systems (MindTap Course List)
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