如果能够在出现故障后备份日志尾部，则可以使用完整恢复模式将数据库恢复到故障点。

The full recovery model allows a database to be recovered to the point of failure, assuming that the tail of the log can be backed up after the failure.

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在完整恢复模式或大容量日志恢复模式下，如果最近尚未备份事务日志，则请立即进行备份以免发生日志截断。

Under the full recovery model or bulk-logged recovery model, if the transaction log has not been backed up recently, backup might be what is preventing log truncation.

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