86 search results - page 1 / 18 » Using Integrity Constraints to Provide Intensional Answers t... |
VLDB
1989
ACM
13 years 9 months ago
1989
ACM
CORR
2011
Springer
12 years 12 months ago
2011
Springer
Contemporary use of the term ’intension’ derives from the traditional logical doctrine that an idea has both an extension and an intension. In this paper we introduce an intens...
ER
2004
Springer
13 years 8 months ago
2004
Springer
The semantic web envisions a World Wide Web in which data is described with rich semantics and applications can pose complex queries. Ontologies, a cornerstone of the semantic web,...
DLOG
2008
13 years 7 months ago
2008
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
EDBT
2012
ACM
11 years 7 months ago
2012
ACM
In this paper we consider the problem of answering queries using views, with or without ontological constraints, which is important for data integration, query optimization, and d...