What should be done once a transaction is complete?

Once a transaction is complete, the essential step is to commit the changes. This action finalizes all the operations that were part of the transaction, ensuring that the data reflects the intended updates. Committing a transaction signifies that the operations should be made permanent, allowing any changes to be visible to other transactions and users. This step is vital in maintaining data integrity and consistency within the database.

While releasing resources, logging transactions, or notifying users may be important in other contexts, they are not the primary action required upon the completion of a transaction in terms of data processing. Committing ensures that the intended changes are executed and maintained in the system, which is the core purpose of a transaction's lifecycle.