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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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.
45
1
I
T
関連用語
用語に関連する話
用語の使用例
メイン フレ ーム
基幹システムに使われる大型コンピュータ
大 企 業 などの 基 幹 業 務 に 使 わ れる大 型コンピュータで 、「 汎 用 機 」や「 ホストコンピュータ」
などと呼ばれる。高性能なハードウェアで構成されており、信頼性が高く、安全性が確保
されているため、現 在も金 融 機関などを中心に使われ ている。専 用の O S を搭 載している
こと が 多く、 他 社 の ハ ードウ ェ ア へ の 移 行 など が 困 難 だと いうデ メリットも ある 。
「 銀 行だとまだまだメインフレームが 残ってるんだよね 。」
レガシーマイグレーション
メインフレームで開発されたソ
フトウェアをLinux などのオープ
ン系のシステムに載せ替えるこ
とやその変換作業をレガシーマ
イグレーションと言う。
現在も使われるCOBOL
メインフレームでのシステム開
発ではCOBOLというプログラミ
ング言語が多く使われる。英語に
近い記述で、帳票や画面編集など
の事務処理機能が得意。
ダウンサイジング が 進む
設置スペースやコストを削減す
ることをダウンサイジングと言
い、メインフレームの運用や維持
コストを、より安価な機器に置き
換える作業が進められている。
データセンター
……P38
レガシーマイグレーション
……P134
Keyword
032
▶
めいん ふれーむ
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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.