137 search results - page 8 / 28 » Query optimization for ontology-based information integratio... |
ICDT
2001
ACM
13 years 11 months ago
2001
ACM
Rewriting queries using views is a powerful technique that has applications in query optimization, data integration, data warehousing etc. Query rewriting in relational databases ...
IJCAI
2003
13 years 8 months ago
2003
In data-integration systems, information sources often have various constraints such as “all houses stored at a source have a unique address.” These constraints are very usefu...
BTW
2007
Springer
14 years 1 months ago
2007
Springer
: Statistics that accurately describe the distribution of data values in the columns of relational tables are essential for effective query optimization in a database management sy...
CIKM
1999
Springer
13 years 11 months ago
1999
Springer
We present the architecture and a performance assessment of an extensible query optimizer written in Venus. Venus is a general-purpose active-database rule language embedded in C+...
CIKM
2008
Springer
13 years 9 months ago
2008
Springer
The efficient execution of integration processes between distributed, heterogeneous data sources and applications is a challenging research area of data management. These inn proc...