Could you explain what the term ACID means in the context of databases?

The ACID term in the context of databases describes a set of properties that ensure the reliability and correctness of transactions:

• Atomicity — a transaction is executed completely or not at all. If something goes wrong, all changes are rolled back.

• Consistency — after a transaction is completed, the database remains in a correct state, satisfying all rules and constraints.

• Isolation — parallel transactions do not affect each other; each sees the database as if it were the only one.

• Durability — after a transaction is committed, changes are saved even in case of system failures.

These properties guarantee that database operations are reliable and predictable, which is especially important for critical applications.