427 search results - page 6 / 86 » Conjunctive Query Answering in EL using a Database System |
SEBD
2007
13 years 8 months ago
2007
We consider the problem of query containment over an object data model derived from F-logic. F-logic has generated considerable interest commercially, in the academia, and within ...
CORR
2002
Springer
13 years 7 months ago
2002
Springer
A relational database is inconsistent if it does not satisfy a given set of integrity constraints. Nevertheless, it is likely that most of the data in it is consistent with the co...
PODS
1997
ACM
13 years 11 months ago
1997
ACM
We consider the problem of answering datalog queries using materialized views. The ability to answer queries using views is crucial in the context of information integration. Prev...
ICDT
1999
ACM
13 years 11 months ago
1999
ACM
In data integration systems, queries posed to a mediator need to be translated into a sequence of queries to the underlying data sources. In a heterogeneous environment, with sour...
SSD
2001
Springer
13 years 12 months ago
2001
Springer
In this paper we introduce the notion of constrained nearest neighbor queries (CNN) and propose a series of methods to answer them. This class of queries can be thought of as neare...