210 search results - page 22 / 42 » Complex Group-By Queries for XML |
ICDE
2006
IEEE
14 years 10 months ago
2006
IEEE
Streaming XPath evaluation algorithms must record a potentially exponential number of pattern matches when both predicates and descendant axes are present in queries, and the XML ...
DASFAA
2003
IEEE
14 years 1 months ago
2003
IEEE
The increase in the use of XML (eXtensible Markup Language) makes the semistructured data more and more important on the Web. To exploit the full power of XML documents, a query l...
ICDE
2004
IEEE
14 years 10 months ago
2004
IEEE
Twig queries represent the building blocks of declarative query languages over XML data. A twig query describes a complex traversal of the document graph and generates a set of el...
PVLDB
2008
13 years 8 months ago
2008
The old problem of managing the history of database information is now made more urgent and complex by fast spreading web information systems, such as Wikipedia. Our PRIMA system ...
ICDT
2009
ACM
14 years 9 months ago
2009
ACM
Marx and de Rijke have shown that the navigational core of the w3c XML query language XPath is not first-order complete ? that is it cannot express every query definable in firsto...