September 2013
Intermediate to advanced
264 pages
5h
Chinese
Content preview from Bad Data 技術手冊
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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.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.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.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.
結論
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235
若你不幸的遇到某些「強大的使用者」直接對原始資料讀寫存取（例如說使用桌面的
SQL 工具）的狀況，至少要提供每個人他們自己的登入憑證。
16
在一天結束時，不論審查是對你或是對 CEO，非正式的或是刑事訴訟的，若你沒有辦法
描述、審查並且維護你的資料的當責鏈，適當的完整性、前後連貫性以及正確性的維護
不只會變得更困難，也會變得極度的無關緊要。
結論
在此呈現的這個 4C 框架，只是查看資料品質的其中一個可能的方法，如我們所說的，
你所要花費的心力是不同的（也會跟每個 C 有相關）。也就是說，有三個準則是從這個
討論而來，而這個討論常被重複探討，並且應該要跟任何的資料品質分析框架有關：
嘗試分開的（和首次的、遞迴的）從手邊的主要任務開始思考。在真正的工作開始前，
養成思考資料品質的習慣，不只能夠節省時間，還能夠讓你更瞭解你在分析該集合上的
能力以及限制。
只要可以的話，就執行實際的資料品質確認，從手邊的主要任務中分開。在多數的程式
範例中，驗證邏輯最好能夠跟主要流程拆開；何不將其放在資料處理的地方？
有意識（且文件化）的決定，要如何處置無法實踐你的 4C 確認的資料（也要文件
化！）的決策。若你無法從你對資料品質的決定，產生並且文件化清楚的決策和動作，
你也許也要跳過整個程序。
我們希望你發現本章是完整、前後連貫並且正確的。若沒有，作者是唯一要負起當責的
人。
資料品質分析，以及其他相關的資料處理，是從資料中取得任何有意義的資訊的必要第
一步。這是一個麻煩且不令人感激的工作，並且通常會比實際的分析要花費更多的時 ...
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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.