2715 search results - page 398 / 543 » Database Publication Practices |
150
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PODS
2004
ACM
16 years 5 months ago
2004
ACM
We study the problem of answering queries over sources with limited access patterns. Given a first-order query Q, the problem is to decide whether there is an equivalent query whi...
135
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PODS
2005
ACM
16 years 5 months ago
2005
ACM
We consider here the exchange of Active XML (AXML) data, i.e., XML documents where some of the data is given explicitly while other parts are given only intensionally as calls to ...
125
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PODS
2005
ACM
16 years 5 months ago
2005
ACM
We study the satisfiability problem associated with XPath in the presence of DTDs. This is the problem of determining, given a query p in an XPath fragment and a DTD D, whether or...
151
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PODS
2005
ACM
16 years 5 months ago
2005
ACM
MSO logic on unranked trees has been identified as a convenient theoretical framework for reasoning about expressiveness and implementations of practical XML query languages. As a...
155
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EDBT
2004
ACM
16 years 5 months ago
2004
ACM
Abstract. Clustering is a problem of great practical importance in numerous applications. The problem of clustering becomes more challenging when the data is categorical, that is, ...