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» A SAT approach to query optimization in mediator systems
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2003
15 years 7 months ago
Semantic Caching in Ontology-based Mediator Systems
: The integration of heterogenous web sources is still a big challenge. One approach to deal with integration problems is the usage of domain knowledge in form of vocabularies or o...
Marcel Karnstedt, Kai-Uwe Sattler, Ingolf Geist, H...
DASFAA
2003
IEEE
99views Database» more  DASFAA 2003»
15 years 11 months ago
Scalable View Expansion in a Peer Mediator System
To integrate many data sources we use a peer mediator framework where views defined in the peers are logically composed in terms of each other. A common approach to execute queri...
Timour Katchaounov, Vanja Josifovski, Tore Risch
NGITS
1995
Springer
15 years 9 months ago
The TSIMMIS Approach to Mediation: Data Models and Languages
TSIMMIS—TheStanford-IBMManagerofMultipleInformationSources—isasystemforintegrating information. It offers a data model and a common query language that are designed to support ...
Hector Garcia-Molina, Dallan Quass, Yannis Papakon...
GIS
2002
ACM
15 years 5 months ago
A WFS-based mediation system for GIS interoperability
The proliferation of spatial data on the Internet is beginning to allow a much wider access to data currently available in various Geographic Information Systems (GIS). In order t...
Omar Boucelma, Mehdi Essid, Zoé Lacroix
COOPIS
2002
IEEE
15 years 11 months ago
Querying XML Sources Using an Ontology-Based Mediator
In this paper we propose a mediator architecture for the querying and integration of Web-accessible XML data sources. Our contributions are (i) the definition of a simple but expr...
Bernd Amann, Catriel Beeri, Irini Fundulaki, Miche...