Titlebook: Database Theory – ICDT 2007; 11th International C Thomas Schwentick,Dan Suciu Conference proceedings 2006 Springer-Verlag Berlin Heidelberg

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Health Visiting in Anxious Timesing. It provides a natural framework for consistency and safety questions, which first considers approximate solutions and then exact solutions obtained with a Corrector..We consider a model based on transducers of words and trees, and study .-Consistency, i.e., the problem of deciding whether a giv

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Marie Louise Seeberg,Elżbieta M. Goździakource-to-target dependencies which express inclusion of unions of conjunctive queries with equality. This generalizes previous privacy work in the global-as-view publishing scenario and covers local-as-view as well as combinations of the two..We concentrate on . security, where malicious users have

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Helene Bang Appel,Rashmi Singlaal, and the axiomatisation proposed for XML keys is incomplete even if key paths are simple. Therefore, the axiomatisation and also the implication problem for XML keys are still unsolved..We propose a set of inference rules that is indeed sound and complete for the implication of XML keys with simp

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https://doi.org/10.1007/978-3-319-44610-3ument normalization, and data integrity. XFDs are more complicated than relational functional dependencies because the set of XFDs satisfied by an XML document depends not only on the document values, but also the tree structure and corresponding DTD. In particular, constraints imposed by DTDs may a

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https://doi.org/10.1007/978-3-531-92371-0re fixed and.> 1 (.> arity – 1 for structures of higher arity). We consider conjunctive properties over these random graphs, and investigate the problem of computing their asymptotic conditional probabilities. This provides us a novel approach to dealing with uncertainty in databases, with applicati