How are log files used for database reliability?
What will be an ideal response?
Log files record the database transaction activity. A database transaction is a logical unit of work reading or writing from a database. Database transactions are important for maintaining the integrity and consistency of the database. A database transaction is designed to roll back should the transaction fail. The rollback capability relies on writing the transaction to the log file prior to committing the transaction to the data file. The log of database transactions is also necessary when recovering a database from a backup-which is done by replaying the transaction activity from the log to ensure no loss of data.
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