What is a transaction?

SQL indexes, transactions and performance · Freshers

Model answer

A group of statements that succeed or fail as one unit. BEGIN starts, COMMIT saves, and ROLLBACK undoes. A classic example is moving money: subtract from one account and add to another, and either both happen or neither does.

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Indexes and Faster Queries: EXPLAIN for Beginners in the course SQL for Beginners: Learn Databases Step by Step.

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