429 search results - page 42 / 86 » A SAT approach to query optimization in mediator systems |
ICPP
2003
IEEE
14 years 1 months ago
2003
IEEE
Spatial databases are entering an era of mass deployment in various real-life applications, especially mobile and location-based services. The real-time processing of spatial quer...
ICDE
2005
IEEE
14 years 10 months ago
2005
IEEE
We address the problem of executing continuous multiway join queries in unpredictable and volatile environments. Our query class captures windowed join queries in data stream syst...
FCSC
2007
13 years 8 months ago
2007
Application-level content-based routing using XML is a key technology for decentralized publish/subscribe systems. In this paper, a new approach is proposed to support the efficien...
SIGMOD
2006
ACM
14 years 2 months ago
2006
ACM
Although approximate query processing is a prominent way to cope with the requirements of data analysis applications, current database systems do not provide integrated and compre...
EDBT
2006
ACM
14 years 8 months ago
2006
ACM
Current methods for selectivity estimation fall into two broad categories, synopsis-based and sampling-based. Synopsis-based methods, such as histograms, incur minimal overhead at ...