允许您捕获特定时间点的数据库状态。

Let you capture the state of a database at a specific point in time.

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你可能还需要比较不同时间点的数据和超出阈值能发送警告。

You'll also benefit from the ability to compare data from different points in time, as well as the ability to send alerts when thresholds are breached.

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自动刷新可能会带来问题，因为只需要对财务数据进行指定时间点的分析。

Automatic refreshes are problematic because of the point-in-time analysis being performed on financial data.

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And it's a topic I want to pick up on today, we're going to do for the next few lectures, and it's a topic I want to spend some time on because this idea of capturing data and methods, the term we're going to use for it, but data and functions that belong to that data, things that can be used to manipulate them, is a really powerful one.

我们会在今天讲这个话题,在后面几节课还会讲这个,这是个我愿意花点时间，在上面的话题因为这是个,捕获数据和方法的思想,我们用这个术语来形容它，数据中包括了数据和函数等，能用来操作它们的东西,真的是很强大的工具，我们真正要讲的东西是，我们要学会如何把信息。

麻省理工公开课 - 计算机科学及编程导论课程节选