After committing, a transaction's changes are saved and become permanent in the database, meaning they will persist even after a system failure, ensuring data integrity and stability according to ACID principles.
Beyond the commit point, the transaction is said to be committed, and its effect is assumed to be permanent in the database.
In the context of databases, when a transaction reaches the commit point, it has passed a critical stage where it can no longer be aborted. After committing, the changes made by the transaction are saved into the database and are deemed irreversible under normal operation conditions. This means that the transaction has been written to the database's permanent storage, and even if a system failure occurs afterward, the changes will persist. Committing a transaction is crucial to maintaining atomicity, consistency, isolation, and durability (ACID properties), which are foundational principles ensuring reliable transaction processing in database management systems. The commit point acts as a synchronization point at which all participants of the distributed transaction agree that the transaction is completed successfully.
Upon reaching the commit point, the transaction's changes are considered permanent, ensuring data integrity and enabling recovery procedures to restore to this known good state in cases of subsequent failure.