functional dependency

English

Noun

functional dependency (plural functional dependencies)

(database normalization) Given a relation R and two sets of attributes $X,Y\subseteq R$ , a constraint $X\rightarrow Y$ where each X value in R is associated with precisely one Y value in R.

Translations

constraint between two sets of attributes in a relation

Chinese:
Mandarin: 函數依賴／函数依赖 (hánshù yīlài)
French: dépendance fonctionnelle (fr) f
German: funktionale Abhängigkeit f

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