124 search results - page 15 / 25 » Concept-based querying in mediator systems |
BDA
2007
13 years 9 months ago
2007
We consider a distributed information system that allows autonomous consumers to query autonomous providers. We focus on the problem of query allocation from a new point of view, ...
AIPS
1998
13 years 9 months ago
1998
We present the application of the Planning by Rewriting PbR framework to query planning in distributed and heterogeneous environments. PbR is a new paradigm for e cient high-quali...
DEXA
2004
Springer
14 years 29 days ago
2004
Springer
Data integration is a significant challenge: relevant data objects are split across multiple information sources, and often owned by different organizations. The sources represent...
VLDB
2005
ACM
14 years 1 months ago
2005
ACM
We present HePToX, a full-fledged peer-topeer database system that efficiently handles XML data heterogeneity. In a highly dynamic P2P network, it is unrealistic for a peer enter...
EMISA
1999
Springer
13 years 12 months ago
1999
Springer
Abstract. The purpose of a computerized information system is to improve dataintensive business processes in an organization. The development of such systems itself is data-intensi...