Lesson 02 · 16 min
Transactions, ACID and isolation levels
What a transaction guarantees, which anomalies appear under concurrency, and what each isolation level gives you in PostgreSQL.
16 minLesson 2 of 10Practice includedAsk AI on any point
A transaction groups several changes into one unit: either all of them apply or none. The real surprises start when there are many transactions running at the same time.
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