2674 search results - page 33 / 535 » Data Models and Query Languages for Spatial Databases |
ADBIS
1998
Springer
13 years 11 months ago
1998
Springer
In order to answer efficiently range queries in 2-d R-trees, first we sort queries by means of a space filling curve, then we group them together, and finally pass them for process...
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
Reverse skyline queries over uncertain databases have many important applications such as sensor data monitoring and business planning. Due to the existence of uncertainty in many...
SIGMOD
2000
ACM
13 years 12 months ago
2000
ACM
This paper addresses the problem of finding the K closest pairs between two spatial data sets, where each set is stored in a structure belonging in the R-tree family. Five diffe...
GIS
2010
ACM
13 years 6 months ago
2010
ACM
It is cost-effective for data owners to publicize their spatial databases via database outsourcing; however, data privacy and query integrity are major challenges. In this demonst...
GIS
2008
ACM
14 years 8 months ago
2008
ACM
We report on our experience from design and implementation of a powerful map application for managing, querying and visualizing evolving locations of moving objects. Instead of bu...