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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248
関連用語
用語に関連する話
用語の使用例
リレ ー ショナ ル
デ ータベ ースとS Q L
「リレーショナルデータベースの操作にはSQLを覚えればいいね。」
テーブルなどを定義する
DDL
SQLのうち、テーブルなどの構造
を定義するものにDDLがあり、
CREATE TABLEや DROP TABLE
などの文がある。
データを操作するDML
SQLのうち、データを操作す
るものにDMLがあり、検索の
SELECT や 登録の INSERT、更新
の UPDATE、削除の DELETEなど
がある。
アクセス権限などを
設定するDCL
SQLのうち、データに対するアク
セス制御などを行うものにDCL
があり、権限を付与するGRANT
や剥奪するREVOKEなどがある。
複 数の表をひも付けて管理
表 形 式 の データを 関 連 付 け て構 成した データベースをリレーショナ ル データベースと言 い 、
SQLという言語で操作する。データの操作だけでなく、格納形式の定義やアクセス権限
の 設 定も可 能 。デ ータを 格 納 する前 にデータモ デ ル を 決 め 、不 適 切 な 登 録 を防 げる。
計算中
Keyword
223
▶
りれ ーしょなるで ーた べ ー す
▶
え す きゅ ー える
表計算ソフトとDBMS
……P86
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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.