Abstract:The concept of functional dependencies plays an important role in relational databases where it is used in integrity enforcement and database design. The corresponding concept, functional dependencies in XML ( XFDs), has been widely investigated over the past few years. Although some proposals have been made and most of them are based on path that is a crucial factor for the expressive power ofXFDs, there seems to be no consensus on how to specify them. In this paper, we survey the previous work in terms of th… Show more
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