BuyFindarrow_forward

Database Systems: Design, Implemen...

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

Solutions

Chapter
Section
BuyFindarrow_forward

Database Systems: Design, Implemen...

12th Edition
Carlos Coronel + 1 other
Publisher: Cengage Learning
ISBN: 9781305627482
Chapter 10, Problem 1RQ
Textbook Problem
423 views

Explain the following statement: A transaction is a logical unit of work.

Explanation of Solution

Explanation of the given statement:

The given statement is “A transaction is a logical unit of work”. The statement describes the meaning of transaction in single statement. A transaction is a sequence of process that must be entirely completed or aborted. Intermediate states are not acceptable in the process of transaction.

  • In DBMS, transaction act as a unit of logical related commands in which all the steps must be fully completed. If any of the SQL (Structured Query Language) command fails, the entire transaction is rolled back to the original database.
  • If the transaction is acceptable by the DBMS (Database Management Systems), the transaction changes the database from one consistent state to another. To avoid inconsistent state, the DBMS must accept all database operations of the transaction are completed before the database committed.
  • Consider the below example:
    • The database “sales” requires a minimum of two database operations. One is creation of product and another one is payment.
    • If the first operation is completed, the database will be left in an inconsistent state and the entire database is canceled. The transaction is accepted when all two operations are completed in the database.

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Chapter 10 Solutions

Database Systems: Design, Implementation, & Management
Show all chapter solutions
add

Additional Engineering Textbook Solutions

Find more solutions based on key concepts
Show solutions add
What capabilities should a wireless security toolkit include?

Principles of Information Security (MindTap Course List)

Present the results of the following operations using the proper number of significant digits. Your Calculator...

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

Think about the last time you were involved in an interview (either as an interviewer or an interviewee). What ...

Enhanced Discovering Computers 2017 (Shelly Cashman Series) (MindTap Course List)

If your motherboard supports ECC DDR3 memory, can you substitute non-ECC DDR3 memory?

A+ Guide to Hardware (Standalone Book) (MindTap Course List)

What are the advantages of GMA welding?

Welding: Principles and Applications (MindTap Course List)