What is transactional consistency in databases?
Transactional consistency ensures that a database remains in a valid state before and after a transaction.
Can you give me an example of how it works?
Sure! Imagine a bank transfer: if you transfer $100 from Account A to Account B, both accounts must reflect this change accurately.
What happens if there's a failure during the transaction?
If a failure occurs, the transaction should roll back, ensuring that neither account is updated, maintaining consistency.
Are there different levels of consistency?
Yes, there are various levels, such as strong consistency, eventual consistency, and causal consistency, each with its own trade-offs.
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