429 search results - page 33 / 86 » A SAT approach to query optimization in mediator systems |
ESWS
2008
Springer
13 years 10 months ago
2008
Springer
In this contribution a system is presented, which provides access to distributed data sources using Semantic Web technology. While it was primarily designed for data sharing and sc...
MDM
2005
Springer
14 years 2 months ago
2005
Springer
In this paper we propose a query-driven approach for tuning the time/energy trade-off in sensor networks with mobile sensors. The tuning factors include re-positioning of mobile s...
FUIN
2006
13 years 8 months ago
2006
In this paper we deal with the problem of finding an optimal query execution plan in database systems. We improve the analysis of a polynomial-time approximation algorithm due to M...
BIRTHDAY
2010
Springer
13 years 8 months ago
2010
Springer
Abstract. Current peer-to-peer (p2p) systems place the burden of application-level query execution on the application developer. Not only do application developers lack the experti...
SEMWEB
2009
Springer
14 years 3 months ago
2009
Springer
RDF Schema (RDFS) as a lightweight ontology language is gaining popularity and, consequently, tools for scalable RDFS inference and querying are needed. SPARQL has become recently ...