The abbreviation ACID — what does it mean, tell me about each property.

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

• Atomicity — a transaction is completed in full or not at all. If something goes wrong, all changes are rolled back.
• Consistency — after a transaction completes, the database remains in a correct state, satisfying all constraints and rules.
• Isolation — parallel transactions do not affect each other, and their execution results are equivalent to sequential execution.
• Durability — after a transaction is committed, its changes are saved in the database and are not lost even in case of failures.

These properties ensure data integrity and predictable system behavior when working with transactions.