在几乎所有安全的程序中，您的第一道防线就是检查您所接收到的每一条数据。
In nearly all secure programs, your first line of defense is to check every piece of data you receive.
您可以使用这些作业来纠正错误，或者只是检查您的所有数据是否一致。
You can use these jobs to correct errors, or to simply check that all your data is consistent..
如果您是一位不遗余力追求严格 SLA 的数据库管理员（Database Administrator，DBA），您需要确保正确地检查您正在使用的 HA 解决方案的 HA 拓扑和选择。
If you are a database administrator (DBA) who's laying it all on the line for a tight SLA, you need to ensure you properly vet your HA topology and the choice of the HA solution you are using.
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