What is the repeatable read isolation level in databases?

What is the repeatable read isolation level in databases?

The repeatable read isolation level ensures that if a transaction reads a row, it will see the same data if it reads it again during the same transaction.

How does it differ from other isolation levels?

Unlike read committed, repeatable read prevents non-repeatable reads, meaning data cannot change between reads within the same transaction.

What are the potential drawbacks of using repeatable read?

The main drawback is that it can lead to increased locking and potential deadlocks, as it holds locks on rows for the duration of the transaction.

Can you give an example of when to use repeatable read?

It's useful in scenarios like banking transactions where consistent data is crucial throughout the transaction process.