What is transaction isolation in databases?

What is transaction isolation in databases?

Transaction isolation is a property that defines how transaction integrity is visible to other transactions.

Why is transaction isolation important?

It's crucial for maintaining data consistency and preventing issues like dirty reads, non-repeatable reads, and phantom reads.

What are the different levels of transaction isolation?

The main levels are Read Uncommitted, Read Committed, Repeatable Read, and Serializable.

Can you explain each level briefly?

Sure! Read Uncommitted allows dirty reads, Read Committed prevents them, Repeatable Read ensures consistent reads, and Serializable is the strictest, preventing phantom reads.