Fast detection of functional dependencies in XML data
XSym'10 Proceedings of the 7th international XML database conference on Database and XML technologies
Attribute grammar for XML integrity constraint validation
DEXA'11 Proceedings of the 22nd international conference on Database and expert systems applications - Volume Part I
Transactions on Large-Scale Data- and Knowledge-Centered Systems VI
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Normalization theory is necessary for designing a good XML document. A good document means that it has minimal redundancy. The research on XML functional dependency and normalization is still an open problem. This paper first presents a path language of XML model, then proposes a new kind of XML functional dependency (XFD) that has stronger expression ability to XML functional dependency that can result in redundancies. In this paper, the problems of XFD logical implication and XFD closure are studied and a group of the corresponding inference rules is proposed. Based on the XFD, a kind of XML normal form (XNF) and an algorithm converting into XNF are also proposed in this paper.