427 search results - page 17 / 86 » Conjunctive Query Answering in EL using a Database System |
SIGMOD
2006
ACM
14 years 2 months ago
2006
ACM
Although approximate query processing is a prominent way to cope with the requirements of data analysis applications, current database systems do not provide integrated and compre...
ICDE
2000
IEEE
14 years 10 months ago
2000
IEEE
In information-integration systems, sources may have diverse and limited query capabilities. In this paper we show that because sources have restrictions on retrieving their infor...
DLOG
2008
13 years 11 months ago
2008
The paper addresses the problem of explaining some reasoning tasks associated with the DL-Lite Description Logic. Because of the simplicity of the language, standard concept level ...
SIGMOD
2006
ACM
14 years 9 months ago
2006
ACM
We study the problem of finding efficient equivalent viewbased rewritings of relational queries, focusing on query optimization using materialized views under the assumption that ...
CIKM
2006
Springer
14 years 14 days ago
2006
Springer
Relational databases are widely used today as a mechanism for providing access to structured data. They, however, are not suitable for typical information finding tasks of end use...