August 2022
Beginner to intermediate
463 pages
9h 22m
Chinese
Content preview from Tableau Prep即学即用
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399
第
45
章
存储数据
数据准备的关键考虑因素之一是在哪里保存输出。毕竟，如果你把数据放在以下这
样的地方，那么做所有这些艰苦的工作有什么意义呢？
•
对那些需要使用数据的人来说是不可访问的。
•
响应缓慢或无响应。
•
无意外覆盖的保护机制，有可能造成源数据的永久性丢失。
让我们依次考虑这些情况，以确定在将输出写到一个位置时应该考虑些什么（见
图
45-1
）。
图
45
-
1
：Tableau Prep 中的输出步骤
45.1
不可访问
正如前一章所讨论的那样，在数据开放性和数据安全性之间找到正确的平衡点可能
400
｜
第
45
章
是一项挑战。随着普通公众意识到个人数据的价值以及数据泄露对其生活的潜在影
响，世界各地正在通过更多的、限制性的数据相关的立法。同时，在不违反任何规
则和法律的前提下，让人们自由地使用数据，能带来未来的创新和更好、更有效的
决策。那么，如何才能达到这种平衡呢？好吧，我们先来考虑一下数据访问时“绝
对不要做”的那些事。
45.1.1
不要犯法
有些事情是不能做的，犯法就是其中之一。以下是需要注意的两件重要事情。
个人身份信息
Personally Identifiable Information
（
PII
，个人身份信息）是指任何能够识别个人身
份的数据。出于操作上的原因，你可能需要识别某人的身份（例如
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.