24 search results - page 2 / 5 » Two Upper Bounds for Conjunctive Query Answering in SHIQ |
PODS
2003
ACM
14 years 7 months ago
2003
ACM
In this paper we study the following problem. Given a database and a set of queries, we want to find, in advance, a set of views that can compute the answers to the queries, such ...
SEBD
2007
13 years 8 months ago
2007
The use of ontologies in various application domains, such as Data Integration, the Semantic Web, or ontology-based data management, where ontologies provide the access to large am...
AAAI
2007
13 years 9 months ago
2007
Expressive Description Logics (DLs) have been advocated as formalisms for modeling the domain of interest in various application areas. An important requirement is the ability to ...
PODS
2006
ACM
14 years 7 months ago
2006
ACM
Query containment is a fundamental algorithmic problem in database query processing and optimization. Under set semantics, the query-containment problem for conjunctive queries ha...
AAAI
2007
13 years 9 months ago
2007
The use of ontologies in various application domains, such as Data Integration, the Semantic Web, or ontology-based data management, where ontologies provide the access to large a...