August 2017
Intermediate to advanced
500 pages
12h 3m
Japanese
Content preview from PythonとJavaScriptではじめるデータビジュアライゼーション
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112
5 章 Python による Web からのデータの取得
リモートデータに対するほとんどのアクセスや操作は
CRUD
（
Create
、
Retrieve
†
、
Update
、
Delete
：作成、読み取り、更新、削除）という頭字語に集約できます。
CRUD
という用語は、も
ともとリレーショナルデータベースで実装される主な関数すべてを表すために作成されました。
HTTP
は
POST
、
GET
、
PUT
、
DELETE
メソッドで
CRUD
に相当するものを提供し、
REST
抽
象化はこれらのメソッドを
URI
（
https://ja.wikipedia.org/wiki/Uniform_Resource_Identifer
）
に対して使用します。
何が適切な
RESTful
インタフェースで何が適切でないかに関する議論はとても複雑ですが、基
本的には
URI
（
http://example.com/api/items/2
など）には
CRUD
操作を実行するために必要
な全情報が含まるようにします。特定の操作（
GET
や
DELETE
など）は
HTTP
メソッドで指定
します。
SOAP
などのアーキテクチャは例外で、リクエストヘッダのメタデータに処理状態を把握
する情報を含めます。
URI
をデータの仮想アドレスと考え、
CRUD
を
URI
に実行できるすべての
操作と考えてください。
データ可視化を行う人は興味のあるデータを入手したがるため貪欲な消費者になるので、最適な
HTTP
メソッドは
GET
で、以降の例ではさまざまな既知の
Web API
でのデータ取得に焦点を絞 ...
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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.