What are the benefits of using transaction isolation?

What are the benefits of using transaction isolation in databases?

Transaction isolation helps maintain data integrity by preventing concurrent transactions from interfering with each other.

Can you explain how it prevents issues like dirty reads?

Sure! Dirty reads occur when a transaction reads data modified by another uncommitted transaction. Isolation levels like 'Read Committed' prevent this by ensuring only committed data is read.

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.

How does choosing a higher isolation level affect performance?

Higher isolation levels can lead to increased locking and reduced concurrency, which may impact performance but enhance data consistency.