It is critical to avoid configuration mistakes, as there is no way to undo data issues.

避免配置错误非常重要，没有任何方法来撤销数据上的错误。

youdao

Oracle supports a mechanism called Multi-Version Read Consistency which is implemented by undo data in the undo segments.

Oracle支持一种称为Multi - Version Read Consistency的机制，这是用undo段中的undo数据实现的。

youdao

I've shown how to build the connection, construct an SQL command, retrieve the data, make changes, and either undo changes or apply them back to the database.

我展示了如何构建连接，构造SQL命令，检索数据，进行更改，以及撤销更改或将其应用到数据库中。

youdao

The "Android Market Security Tool March 2011" will be remotely added to affected handsets to undo the exploit and keep it from sending your data out, as well as make you wonder just how much remote control Google has over our phones.

ENGADGET: Google flips Android kill switch, destroys a batch of malicious apps (update)