Learn in the textbookFailure Recovery
DefinitionBackward recovery (バックワードリカバリ) is the recovery method that takes the database back to its state before processing by means of rollback, and it is also called backward restoration (後退復帰).
ExplanationStarting from the current database, it applies the before-update values in the log from the newest onward, tracing time in reverse. The operation itself is simply a rollback, and backward recovery is a name that focuses on the direction of recovery.