September 2013
Intermediate to advanced
264 pages
5h
Chinese
Content preview from Bad Data 技術手冊
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.
114
|
第八章：血、汗與尿
你所有的資料庫都是屬於我們的
身為一個「如何不儲存資料」的教具，化學家的資料庫是不斷給予的禮物。資料庫是
在前寒武紀的某時被建立的，並且隨著時間進化為一隻河馬：大、笨重且奇怪的古老
東西。
7
「化學家的資料庫」這個詞背叛了第一個問題。這個資料庫是設計給化學家使用的，
並且由化學家維護以及「擁有」。資料的「擁有關係」是個長年的問題，也是其中一個
我不太瞭解的地方。以公司的層級來看，若資料庫擁有商業價值，那麼擁有它則是合理
的。這樣很好，但在我的經驗中，擁有關係的概念已經超過了公司的實際例子。對於這
些實驗者而言，常會見到他們跟他們所建立的資料產生連結。這對資料分析師來說也是
這樣。翻到第一頁，我甚至下意識的使用了「我的資料」這個詞。儘管人們對於資料很
有熱情是件好事，但若太超過的話，可能會導致笨拙的辦公室政治，而非常重視誰才能
存取什麼資料集合。
並且，讓每個人都能控制資料集合，會建立許多不同的資料儲存並且無法跨組織相容。
不同的團隊會用不同的方式儲存資料，並且可能無法注意什麼資料是可用的。這樣的
話，輕則造成沒效率，重則可能會遺失資料集合。
儘管我不期望這實際上能夠被實現，但我相當確信，對一個組織來說較好的系統，是擁
有一個控制不同資料集合存取權限的中央資料管理團隊。中央集權式的管理維持了資料
結構的一致性（或是至少有一致的儲存技術），並且確保有一些瞭解資料庫的人在照顧
你的資料。硬碟備份就是個好的類比。若你讓單獨的團隊去組織他們自己的備份，那麼
有些團隊將會做得很好，但有些則無法，而最終你會遺失資料 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.