February 2013
Intermediate to advanced
380 pages
7h 45m
Japanese
Content preview from Nodeクックブック
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.
102
4 章 データベース接続
きます。
client.query
は
SELECT
文の出力を終了する際に
end
イベントを発行しますが、ここでデータ
ベースから切断したい場合でも
end
イベントを受け取る必要はありません。コードの最後に記述さ
れている
client.end
が別プロセスで動作している
SQL
キューの最後にデータベースから切断す
るタスクを追加し、
SELECT
文の終了を待って自動的にデータベースから切断します。
もしレシピ
4.2
で名言を入力していれば、以下のコマンドでこのスクリプトの動作を確認するこ
とができます。
% node quotes.js "
"
レシピ
4.3
MongoDB
とデータをやりとりする
MongoDB
は、スピードとスケーラビリティを重視して構築されたオープンソースの
NoSQL
データベースです。
MongoDB
はリレーショナルモデルのデータベースではなく、あらかじめス
キーマを用意しておく必要がないドキュメント指向のデータベースです。ドキュメント指向データ
ベースは、データ間の関連性に柔軟性を持たせなければならない場合に特にうまく機能します。
最近は市場にさまざまな
NoSQL
データベースが存在していますが、
MongoDB
は
SQL
に似た
構造を持つクエリ言語をサポートしており、
NoSQL
データベースの中では
RDB
に比較的近いポ
ジションをとっています。
本レシピでは、レシピ
4.2
で
MySQL
を使って実装した
quotes
データベース（名言とその発言
者を記録するデータベース）を ...
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.