Inclusion Dependencies in XML: Extending Relational Semantics

M. Karlinger, M. Vincent, M. Schrefl
Karl09a (2009)
S. S. Bhowmick, J. Küng, R. Wagner (Eds.): Proceedings of the 20th International Conference on Database and Expert Systems Applications (DEXA 2009), 31st August - 4th September 2009, Linz, Austria, Springer Verlag, Lecture Notes in Computer Science, LNCS Vo. 5690, ISBN 978-3-642-03572-2, pp. 23-37, 2009.
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In this article we define a new type of integrity constraint in XML, called an XML inclusion constraint (XIND), and show that it extends the semantics of a relational inclusion dependency. This property is important in areas such as XML publishing and data-centric XML, and is one that is not possessed by other proposals for XML inclusion constraints.We also investigate the implication and consistency problems for XINDs in complete XML documents, a class of XML documents that generalizes the notion of a complete relation, and present an axiom system that we show to be sound and complete.