image roll的意思|示意

Note that you can restore either a full backup manually, apply the Saturday incremental backup image and roll forward.

注意，您可以手动恢复完全备份，应用星期六的增量备份映像并进行前滚。

You can either use a copy of your backup image and roll it forward to the time right before the table was dropped (point-in-time recovery), or you can restore a logical backup through the exp utility.

您可以使用备份映射的副本，并将它前滚至删除表之前的某个时间点(时间点恢复)，或者您可以通过exp实用程序恢复逻辑备份。

While you might want to hand-roll your own code for really large amounts of image processing, NetPBM serves as an excellent sample set to test with.

尽管您可能会希望使用自己的代码来进行大量图像处理过程，不过NetPBM的确可以用作一个非常好的用于测试的样本集。