What is transaction isolation?

What is transaction isolation?

Transaction isolation is a property of database transactions that defines how and when changes made by one transaction become visible to other transactions.

Why is transaction isolation important?

It's important because it helps maintain data integrity and consistency, preventing issues like dirty reads, non-repeatable reads, and phantom reads.

What are the different levels of transaction isolation?

There are four main levels: Read Uncommitted, Read Committed, Repeatable Read, and Serializable, each offering different trade-offs between performance and consistency.

Can you explain dirty reads?

A dirty read occurs when a transaction reads data that has been modified by another transaction but not yet committed, leading to potential inconsistencies.