What is ACID in database systems?

What is ACID in database systems?

Approach: List and define the four properties of reliable transactions.

A set of properties ensuring reliable database transactions. Atomicity (all or nothing), Consistency (valid state), Isolation (concurrent safety), and Durability (persistence after commit).

Follow-up: Which property ensures that a crash doesn't lose committed data?

Key concepts: atomicity, consistency, isolation, durability.