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Validation of expressive XML keys with XML schema and XQuery
(ACS, 2015)
The eXtensible Markup Language (XML) is the defacto
industry standard for exchanging data on the
Web and elsewhere. While the relational model of
data enjoys a well-accepted definition of a key, several
competing notions ...
Soft cardinality constraints on XML data: How exceptions prove the business rule
(Springer Verlag, 2013)
We introduce soft cardinality constraints which need to be satisfied on average only, and thus permit violations in a controlled manner. Starting from a highly expressive but intractable class, we establish a fragment that ...