Read Uncommitted

Full-Stack Internet Architecture

Nov 21, 2023 · Databases

Demonstrating MySQL Transaction Isolation Levels with Practical Examples

This article explains MySQL's four transaction isolation levels—READ UNCOMMITTED, READ COMMITTED, REPEATABLE READ, and SERIALIZABLE—by creating a simple table, inserting test data, and running step‑by‑step SQL scripts that illustrate the behavior of each level, including phenomena such as dirty reads, non‑repeatable reads, phantom reads, and locking.