VLDB
2005
ACM
14 years 8 days ago
2005
ACM
Query optimizers in current database systems are designed to pick a single efficient plan for a given query based on current statistical properties of the data. However, different...
CIKM
2007
Springer
14 years 29 days ago
2007
Springer
Spatial queries for extracting data from wireless sensor networks are important for many applications, such as environmental monitoring and military surveillance. One such query i...
ICDE
2007
IEEE
14 years 8 months ago
2007
IEEE
Location-based spatial queries (LBSQs) refer to spatial queries whose answers rely on the location of the inquirer. Efficient processing of LBSQs is of critical importance with th...