MySQL Transactions: Concurrency Control Explained

Experiment with Isolation Levels

Create two concurrent transactions in MySQL and observe the effects of different isolation levels on data visibility and locking.

Expected output: Demonstration of how isolation levels affect reads and writes during concurrent transactions.

Hint: Use SET TRANSACTION ISOLATION LEVEL before starting transactions.

Concurrency control is the mechanism MySQL uses to manage simultaneous transaction operations to ensure data integrity and consistency.

MySQL prevents dirty reads by using transaction isolation levels like READ COMMITTED or higher, which ensure transactions only read committed data.

Deadlocks occur when transactions wait indefinitely for locks held by each other. MySQL detects deadlocks and resolves them by rolling back one transaction.