Second,the definition of weak functional dependency and its satisfaction were given.

, concepts of null value, incomplete tree tuple are proposed, based on it, the definition of weak functional dependency and its satisfaction are given; second, the additivity problem for weak functional dependencies are researched, an algorithm that decide whether a given set of functional dependencies is weakly sati.

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.

On the basis of these concepts,strong XML functional dependency holding and weak XML complete functional dependency holding are defined,and it presents algorithms of weather satisfying weak XML complete functional dependency holding.

Research on Functional Dependency for XML Based on Tree Tuples;

The Research of the equivalence of XML functional dependency;

Study on Variation Point in Software Reuse Based on Functional Dependency;

This paper extends the concept of function dependency and proves that it has relation to some important concepts in KDD.

Within the category of function dependency, the theory and application of normalization of relation model were studied.

Within the category of function dependency,the theory and application of normalization of relation model are studied.

Analysis of the resolution method of relationship mode base on the function dependence;

A comprehensive description is made in the article of some important concepts concerning theory of normalization of relational data bank, such as function dependence, normal form etc.

Research of Propagating and Keeping XML Functional Dependency;

When XML document comes forth incomplete information,XML functional dependency has also important meaning for the research of key,normal form and integral restriction for XML document.