January 2020
Beginner
256 pages
5h 11m
English
Content preview from Sams Teach Yourself SQL in 10 Minutes a Day, 5th Edition
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Lesson 20. Managing Transaction Processing
In this lesson, you’ll learn what transactions are and how to use COMMIT and ROLLBACK statements to manage transaction processing.
Understanding Transaction Processing
Transaction processing is used to maintain database integrity by ensuring that batches of SQL operations execute completely or not at all.
As explained back in Lesson 12, “Joining Tables,” relational databases are designed so that data is stored in multiple tables to facilitate easier data manipulation, management, and reuse. Without going in to the hows and whys of relational database design, take it as a given that well-designed database schemas are relational to some degree.
The Orders tables that you’ve been using in the past 19 ...
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