What does the ACID property in DB2 refer to?

In DB2, the ACID properties refer to the four characteristics that a database transaction must have, including:

1. Atomicity: A transaction is a indivisible unit of work that must either fully succeed or fully fail, meaning all operations within the transaction are either completed successfully or none are executed at all.
2. Consistency: The integrity constraints of the database must remain consistent before and after transaction execution, meaning the database state must remain consistent before and after a transaction is executed.
3. Isolation: When multiple transactions are executed simultaneously, each transaction’s operations should be isolated from each other, ensuring independence between transactions.
4. Durability: Once a transaction is committed, any modifications made to the database must be permanently saved. This means that after a transaction is successfully executed, the changes to the database are persistent and can be recovered to the state they were in at the time of the transaction’s submission, even in the event of a system crash.