712 search results - page 133 / 143 » Decoupled Query Optimization for Federated Database Systems |
ESWS
2008
Springer
14 years 11 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...
WWW
2001
ACM
15 years 10 months ago
2001
ACM
Integrity constraints are an essential part of a modern schema definition language. They are useful for semantic specification, update consistency control, query optimization, inf...
PR
2006
14 years 9 months ago
2006
For the management of digital document collections, automatic database analysis still has ties to deal with semantic queries and abstract concepts that users are looking for. When...
CORR
2011
Springer
14 years 4 months ago
2011
Springer
Index tuning, i.e., selecting the indexes appropriate for a workload, is a crucial problem in database system tuning. In this paper, we solve index tuning for large problem instan...
DEBS
2003
ACM
15 years 2 months ago
2003
ACM
We present a design of a distributed publish-subscribe system that extends the functionality of messaging middleware with “relational subscriptions”, to support timely updates...