Last Updated
：2025/11/25
superkey
Noun
Japanese Meaning
データベースにおけるリレーション（表）の中で、各タプル（一行）を一意に識別するために用いられる属性（カラム）の集合
（ plural ）
Quizzes for review
(databases) Any set of attributes of a relation variable (relvar) that serve to identify a single tuple or row, no other tuple having the same value for every attribute in the set.
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superkey
When designing the relation schema, ensure each superkey can uniquely identify a row to prevent duplicate tuples.
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When designing the relation schema, ensure each superkey can uniquely identify a row to prevent duplicate tuples.
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