functional dependency

English

Noun

functional dependency (plural functional dependencies)

1. (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