What is transactional consistency?

What is transactional consistency?

Transactional consistency refers to the guarantee that a transaction will bring the database from one valid state to another, ensuring that all operations within the transaction are completed successfully or none at all.

Can you give me an example of how it works?

Sure! Imagine you are transferring money from one bank account to another. The transaction must ensure that the money is deducted from the first account and added to the second account. If either operation fails, the transaction is rolled back, maintaining consistency.

What happens if there's a failure during the transaction?

If a failure occurs, the system will revert to the previous state before the transaction began, ensuring that no partial changes are made, thus preserving data integrity.

Is transactional consistency important for all applications?

It's crucial for applications that require high data integrity, like banking systems or e-commerce platforms, where accuracy is essential.