1500 search results - page 279 / 300 » Query Optimization in Database Grid |
DMSN
2004
ACM
14 years 3 months ago
2004
ACM
Recent work in sensor databases has focused extensively on distributed query problems, notably distributed computation of aggregates. Existing methods for computing aggregates bro...
BROADNETS
2004
IEEE
14 years 1 months ago
2004
IEEE
One important application of wireless sensor networks is tracking moving objects. The recent progress has made it possible for tiny sensors to have more computing power and storag...
DLOG
2006
13 years 11 months ago
2006
Abstract Practical description logic systems play an ever-growing role for knowledge representation and reasoning research even in distributed environments. In particular, the onto...
GEOINFORMATICA
1998
13 years 9 months ago
1998
Due to the increasing popularity of spatial databases, researchers have focused their efforts on improving the query processing performance of the most expensive spatial database ...
SIGMOD
2005
ACM
14 years 3 months ago
2005
ACM
If presented with inaccurate statistics, even the most sophisticated query optimizers make mistakes. They may wrongly estimate the output cardinality of a certain operation and th...