August 2022
Beginner to intermediate
463 pages
9h 22m
Chinese
Content preview from Tableau Prep即学即用
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390
｜
第
43
章
43.2.3
技术硬件的质量
处理任务的硬件对完成任务所需的时间有很大影响。世界各地的公司给人们支付高
薪，但却给他们配备了老旧的笔记本计算机或处理能力不足的计算机。这种情况会
妨碍人们对数据的处理过程，而且随着数据量的增加，问题只会越来越严重。如果
需要分析的数据集规模很小，那么任何基本的数据准备工作在个人的计算机上还可
能正常进行。但如果数据集规模很大，可能数据准备工具就是一个更好的选择。数
据准备工具通常可以只处理样本数据集（如
Tableau Prep
对大型数据集自动处理那
样），只在需要时才处理完整的数据集。一旦建立了完整的端到端的数据流程和逻辑，
则这种完整的处理可能会在服务器（它具有更强的处理能力）上进行。
43.2.4
数据投资的历史状况
如果组织在历史上已经投资了数据解决方案，并且随着技术的进步继续投资，那么
他们的数据库很有可能包含干净的、可随时使用的信息。在进行数据分析时，你可
以将任何必要的字段添加到数据库中以备将来使用。如果不是这样的话，那么很可
能你将与来自多个零星来源的、较杂乱的数据搏斗。至于你应该在哪里进行数据准
备，并没有明确的答案，很可能需要在数据可视化工具（找出哪些数据是有用的）
和数据准备工具（为未来的使用配置更具战略性的数据源）之间进行切换。
所有这些背景因素都会有助于指导你做出决定，但只有在开始实际工作时，你才能
确定在哪里完成最好。
43.3
软件性能
正如你在本节中所看到的那样，
Tableau Prep
是专门设计用来优化构建数据准备流
程然后执行它的。 ...
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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.