427 search results - page 58 / 86 » Conjunctive Query Answering in EL using a Database System |
ICDE
2008
IEEE
14 years 10 months ago
2008
IEEE
The overwhelming flow of information in many data stream applications forces many companies to outsource to a third-party the deployment of a Data Stream Management System (DSMS) f...
ICDE
2008
IEEE
14 years 10 months ago
2008
IEEE
Aggregate measures summarizing subsets of data are valuable in exploratory analysis and decision support, especially when dependent aggregations can be easily specified and compute...
ICDE
2008
IEEE
14 years 10 months ago
2008
IEEE
Supporting top-k queries over distributed collections of schemaless XML data poses two challenges. While XML supports expressive query languages such as XPath and XQuery, these la...
ICDE
2007
IEEE
14 years 10 months ago
2007
IEEE
Elevation maps are a widely used spatial data representation in geographical information systems (GIS). Paths on elevation maps can be characterized by profiles, which describe re...
ALGORITHMICA
2004
13 years 8 months ago
2004
Query answers from on-line databases can easily be corrupted by hackers or malicious database publishers. Thus it is important to provide mechanisms which allow clients to trust th...