2724 search results - page 250 / 545 » Optimizing Queries on Files |
203
click to vote
SIGMOD
2007
ACM
16 years 4 months ago
2007
ACM
Suppose a long-running analytical query is executing on a database server and has been allocated a large amount of physical memory. A high-priority task comes in and we need to ru...
142
click to vote
CIKM
2008
Springer
15 years 6 months ago
2008
Springer
Query processing techniques for XML data have focused mainly on tree-pattern queries (TPQs). However, the need for querying XML data sources whose structure is very complex or not...
154
click to vote
WWW
2006
ACM
16 years 4 months ago
2006
ACM
Applications and services that access Web data are becoming increasingly more useful and wide-spread. Current main-stream Web query languages such as XQuery, XSLT, or SPARQL, howe...
126
click to vote
SIGMOD
2003
ACM
16 years 4 months ago
2003
ACM
We discuss the design of an acquisitional query processor for data collection in sensor networks. Acquisitional issues are those that pertain to where, when, and how often data is...
124
click to vote
SEMWEB
2009
Springer
15 years 10 months ago
2009
Springer
Abstract. Query answering for the QL profile of OWL 2 and a substantial fragment of the EL profile can be implemented via query rewriting. In our previous work, we presented RQR...