Write-Ahead Logging

The other half is a database manager implementation called write-ahead logging .

另一半是称作预写式日志记录（write-aheadlogging）的数据库管理器实现。

Recovery management is a recovery strategy based on the construction of log structure and Write-Ahead Logging log record .

恢复管理则是构建在日志文件和预写式日志记录基础上。

Backup , Recovery and Logging InnoDB uses write-ahead logging .

备份、恢复和日志InnoDB使用写前（write-ahead）日志记录。

For the later backup schemes , three implemental mechanisms are offered : configuration-based incremental backup , rule-based incremental backup and write-ahead logging backup .

并且为基于日志的增量备份提出了三种实现方案：基于配置的增量备份法、基于规则的增量备份法和基于预写式日志的备份法。

In the process of checkpoint , WAL ( Write-Ahead Logging ) rule does not permit updating the database before the corresponding log records having been written into the log file .

WAL（WriteAheadLogging）是指当执行检查点时，相应的日志记录刷新到稳定存储器前，不允许对数据库做实际的更新。