86 search results - page 2 / 18 » Representing and Querying XML with Incomplete Information |
JDCTA
2010
13 years 10 days ago
2010
In order to solve the low efficiency problem of directly querying single node probability in the set of all ordinary XML data obtained by enumerating possible world set of the cor...
PODS
2008
ACM
14 years 5 months ago
2008
ACM
We present a formal framework for capturing the provenance of data appearing in XQuery views of XML. Building on previous work on relations and their (positive) query languages, w...
PODS
2010
ACM
13 years 10 months ago
2010
ACM
The notion of certain answers arises when one queries incompletely specified databases, e.g., in data integration and exchange scenarios, or databases with missing information. W...
EDBTW
2006
Springer
13 years 9 months ago
2006
Springer
We consider the problem of querying XML documents which are not valid with respect to given DTDs. We propose a framework for measuring the invalidity of XML documents and compactly...
RIAO
2007
13 years 7 months ago
2007
XML documents represent a middle range between unstructured data such as textual documents and fully structured data encoded in databases. Typically, information retrieval techniq...