functional dependency

noun

Given a relation R and two sets of attributes X,Y⊆R, a constraint X→Y where each X value in R is associated with precisely one Y value in R.

Meanings

nounfunctional dependency (plural functional dependencies)

plural functional dependencies

  1. Given a relation R and two sets of attributes X,Y⊆R, a constraint X→Y where each X value in R is associated with precisely one Y value in R.

Translations

Chinese Mandarin 函數依賴 /函数依赖
  • 函數依賴 /函数依赖 (hánshù yīlài)constraint between two sets of attributes in a relation
French dépendance fonctionnelle
  • dépendance fonctionnelleconstraint between two sets of attributes in a relation
German funktionale Abhängigkeit
  • funktionale Abhängigkeitconstraint between two sets of attributes in a relation
Cite this entry
APA

functional dependency. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/functional%20dependency

MLA

“functional dependency.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/functional%20dependency. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “functional dependency,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/functional%20dependency.

Source: functional dependency on Wiktionary, CC BY-SA 4.0.