May 2019
Beginner to intermediate
296 pages
6h 58m
Japanese
Content preview from IT用語図鑑 ビジネスで使える厳選キーワード256
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86
関連用語
用語に関連する話
用語の使用例
表計算
ソ フトと
DBMS
データを格納するセル
表計算ソフトで格子状に並んだ
マス目をセルと言い、このセルに
データを入れることで表を作成
したり、計算したりする。行と列
を使って位置を指定する。
関係を表現するRDBMS
複数の行と複数の列からなる表
でデータ間の関係を表現し、制限
や射影、結合といった関係演算を
使うデータベースをRDBMSと
言う。
大量データを扱う新手法
RDBMS 以 外の DBMS を指す 言
葉としてNoSQLがある。大量の
データを扱うときや、リアルタイ
ムに解析する必要があるときに
使われることが多い。
データをまとめて管理する
データを管 理するとき、CSV ファイルなどのテキスト形式ではなく、表形 式で管 理できるソ
フトウ ェ ア に E x c e l な ど の 表 計 算 ソ フト が あ る 。 た だ 、 デ ータ 量 が 多 い 場 合 や 複 数 の 人 が
扱うデータの場合は、データベースを使うことで整合性の保持や高速な処理が可能となる。
代表的なデータベースに MySQL や PostgreSQL、Oracle などの DBMS がある。
▶
ひ ょうけ い さ ん そ ふ と
▶
でぃーびーえむえす
Keyword
071
「事務員を採用するときは表計算ソフトくらい使える人じゃないと困るね。」
リレーショナ ル デ ータベースと S Q L
……P248
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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.