264 search results - page 40 / 53 » XML-Based RDF Data Management for Efficient Query Processing |
PVLDB
2008
13 years 6 months ago
2008
This paper studies, for the first time, the management of type information for an important class of semi-structured data: nested DAGs (Directed Acyclic Graphs) that describe exec...
WWW
2003
ACM
14 years 8 months ago
2003
ACM
The success of the Semantic Web crucially depends on the easy creation, integration and use of semantic data. For this purpose, we consider an integration scenario that defies cor...
GIS
2007
ACM
14 years 8 months ago
2007
ACM
Continuous spatial queries posted within an environment of moving objects produce as their results a time-varying set of objects. In the most ambitious case both queries and data ...
DKE
1998
13 years 7 months ago
1998
Disk I/O is a major bottleneck for query processing in database applications. This bottleneck is especially a problem for temporal databases because of their large size. Reduction...
KDD
2006
ACM
14 years 7 months ago
2006
ACM
Ordering and ranking items of different types are important tasks in various applications, such as query processing and scientific data mining. A total order for the items can be ...