Functional dependency
= Functional dependency
{title2=$X\to Y$}
{wiki}
= FD
{c}
{synonym}
A <database integrity constraint> saying that any two <database tuples> agreeing on <database attributes> $X$ also agree on <database attributes> $Y$.
= Functional dependency
{title2=$X\to Y$}
{wiki}
= FD
{c}
{synonym}
A <database integrity constraint> saying that any two <database tuples> agreeing on <database attributes> $X$ also agree on <database attributes> $Y$.