What are SQL isolation levels and why are they important?

What are SQL isolation levels and why are they important?

SQL isolation levels define how transaction integrity is visible to other transactions. They are crucial for managing concurrency.

Can you explain the different types of isolation levels?

Sure! The main isolation levels are Read Uncommitted, Read Committed, Repeatable Read, and Serializable. Each has its trade-offs.

What happens in Read Uncommitted?

In Read Uncommitted, transactions can read data that is not yet committed, leading to dirty reads.

And what about Serializable?

Serializable is the strictest level, ensuring complete isolation by preventing other transactions from accessing the data until the current one is complete.