Research on weak functional dependencies and its mono-dependent set for XML
Haiyan Huang · Computer Engineering and Applications Journal · 2009
Weak functional dependency is a sort of functional dependency about XML database existed null value.In this paper, based on concepts of null value,incomplete tree tuple,the definitions of weak functional dependency,mono-dependent set are given,and the theorem of determine mono-dependent set and the terminate-able theorem of determine mono-dependent are proved.