But before modifying data, initial values are copied to a work area called "undo segment".

但是在修改数据之前，先前的数值会被拷贝到一个叫做“撤销段”的工作区域中。

youdao

Oracle also provides some advisors such as segment and undo advisors.

Oracle还提供了一些advisor，例如segment advisor和undo advisor。

youdao

Oracle also provides some advisors such as segment and undo advisors.

Oracle还提供了一些advisor，例如segment advisor和undo advisor。

youdao