functional dependency
functional dependency · functional dependencies
funktionale Abhängigkeit
Given a relation R and two sets of attributes X,Y⊆R, a constraint X→Y where each X…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.
Значение
значений: 1Given 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.
funktionale Abhängigkeit
Переводы
языков: 2Deutsch
По значениям 1
constraint between two sets of attributes in a relation:
Формы
мн. число: functional dependencies| Ед. число | functional dependency |
|---|---|
| Мн. число | functional dependencies |
правильный