Can you describe the main characteristics of transactions in database management systems?

The main characteristics of transactions in database management systems are described by the ACID properties:

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

These properties ensure reliability and integrity of data when working with a database.