309 search results - page 1 / 62 » Towards scalable data integration under constraints |
EDBT
2012
ACM
11 years 7 months ago
2012
ACM
In this paper we consider the problem of answering queries using views, with or without ontological constraints, which is important for data integration, query optimization, and d...
SDM
2008
SIAM
13 years 6 months ago
2008
SIAM
Although clustering under constraints is a current research topic, a hierarchical setting, in which a hierarchy of clusters is the goal, is usually not considered. This paper trie...
IJCAI
2003
13 years 5 months ago
2003
In this paper we address the problem of query answering and rewriting in global-as-view data integration systems, when key and inclusion dependencies are expressed on the global i...
CIKM
2008
Springer
13 years 6 months ago
2008
Springer
More and more applications rely heavily on large amounts of data in the distributed storages collected over time or produced by large scale scientific experiments or simulations. ...
PVLDB
2010
13 years 2 months ago
2010
A variety of integrity constraints have been studied for data cleaning. While these constraints can detect the presence of errors, they fall short of guiding us to correct the err...