Transaction Isolation

Transaction isolation refers to the way a database manages concurrent operations to ensure each transaction is processed accurately without interference. It controls how and when changes made by one transaction become visible to others, preventing issues like data corruption or inconsistency. Think of it like a security barrier: it ensures that while multiple people are working on the same document at the same time, each person's work doesn't affect or see others' changes until they're finalized. Different levels of isolation balance the trade-offs between performance and data accuracy, ensuring reliable and predictable database operations.