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Sams Teach Yourself SQL in 10 Minutes, Fourth Edition by Ben Forta

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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 18 lessons ...

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