What is the Serializable Isolation Level in databases?

Can you explain what the Serializable Isolation Level is in databases?

Sure! The Serializable Isolation Level is the highest level of isolation in database transactions. It ensures complete isolation from other transactions, meaning that the results of a transaction are not visible to others until it is committed.

How does it differ from other isolation levels?

It differs from other levels like Read Committed or Repeatable Read by preventing phenomena like dirty reads, non-repeatable reads, and phantom reads. Essentially, it guarantees that transactions appear to be executed in a serial order.

What are the performance implications of using Serializable?

Using Serializable can lead to increased contention and reduced concurrency, as it locks more resources for longer periods. This can impact performance, especially in high-transaction environments.

When should I use Serializable Isolation Level?

You should use it when data integrity is critical, such as in financial applications, where you cannot afford any anomalies in transaction processing.