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Online banking transactions are being posted to the database when processing suddenly comes
to a halt. The integrity of the transaction processing is BEST ensured by:

database integrity checks.

validation checks.

input controls.

database commits and rollbacks.

Database commits ensure the data are saved to disk, while the transaction processing is underway
or complete. Rollback ensures that the already completed processing is reversed back, and the
data already processed are not saved to the disk in the event of the failure of the completion of the
transaction processing. All other options do not ensure integrity while processing is underway.

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