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@zumionediz

Oracle SQL基本編

Posted at

スキーマ、ユーザ、テーブル・ビューとは？

わかりやすい例は以下。

・スキーマ ...カバン
・ユーザ...人
・テーブル・ビュー...ペン

「テーブルを作成する」 = 「あなた（ユーザ）がカバン（スキーマ）の中にペン（テーブル）を入れる」
・ユーザにスキーマは1つまで
・テーブルは何個でも作成できる

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