What is ACID?

ACID is a set of properties that guarantee the reliability of transactions in databases:

• Atomicity: a transaction is either fully completed or not executed at all.
• Consistency: after a transaction, data remains in a correct state, satisfying all rules and constraints.
• Isolation: parallel transactions do not affect each other, as if executed sequentially.
• Durability: after a transaction is committed, its changes are saved even in case of failures.

These properties are important for preventing errors and data loss when working with databases.