对于数据库来说,什么是“恢复”?什么是“恢复”?
恢复
和恢复
有什么区别?我的理解是:
恢复:使用以下命令刷新数据库 该数据库的备份文件
恢复:数据库失败后, 比如重启服务器, 数据库重新应用提交的 事务日志中的事务
我的理解对吗?
谢谢,
What's the difference of restore
and recovery
? What I understand is:
restore: refresh a database using the
backup files of this databaserecovery: after the database fail,
such as the reboot the server, the
database reapply the committed
transaction in the transaction log
Does my understanding right?
Thanks,
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恢复;从备份介质(例如磁带、其他磁盘)取回文件
恢复;重新运行或展开数据库中部分完成的正在进行的事务。
一般情况下会恢复,然后恢复。一些 RDBMe 会在某种程度上隐藏这 2 个不同的步骤,但仍然执行这 2 个不同的操作。
Restore; bring a file back from backup media, e.g. tape, other disk
Recovery; re-running or unwinding in progress transactions that were partly completed in the DB.
Generally one will recover and then restore. Some RDBMes will hide the 2 different steps to some extent but still undertake the 2 different actions.
它们的功能相同,可以恢复意外删除的记录、修复损坏的数据库文件、恢复整个表以及查询、表单、宏和存储过程。
They are the same function, bringing back records that were accidentally dropped, repair corrupted database files, restore entire tables as well as queries, forms, macros, and stored procedures.