777 search results - page 82 / 156 » Optimization of Relational Preference Queries |
EDBTW
2006
Springer
14 years 1 months ago
2006
Springer
Querying live media streams is a challenging problem that becomes an essential requirement in a growing number of applications. We address the problem of evaluating continuous quer...
ER
2007
Springer
14 years 4 months ago
2007
Springer
Processing a twig pattern query in XML document includes structural search and content search. Most existing algorithms only focus on structural search. They treat content nodes th...
VLDB
2005
ACM
14 years 3 months ago
2005
ACM
Popular XML languages, like XPath, use “treepattern” queries to select nodes based on their structural characteristics. While many processing methods have already been propose...
GIS
1999
ACM
14 years 2 months ago
1999
ACM
: The paper is concerned with the effective and efficient processing of spatiotemporal selection queries under varying degrees of approximation. Such queries may employ operators l...
ICDT
2003
ACM
14 years 3 months ago
2003
ACM
We state and solve the query reformulation problem for XML publishing in a general setting that allows mixed (XML and relational) storage for the proprietary data and exploits redu...