105 search results - page 1 / 21 » A Window Retrieval Algorithm for Spatial Databases Using Qua... |
GIS
1995
ACM
13 years 8 months ago
1995
ACM
An algorithm is presented to answer window queries in a quadtree-based spatial database environment by retrieving the covering blocks in the underlying spatial database. It works ...
GIS
1999
ACM
13 years 9 months ago
1999
ACM
Spatial indexes, such as the PMR quadtree, are important in spatial databases for efficient execution of queries involving spatial constraints, especially when the queries involv...
VLDB
1994
ACM
13 years 9 months ago
1994
ACM
The performance of data-parallel algorithms for spatial operations using data-parallel variants of the bucket PMR quadtree, R-tree, and R+-tree spatial data structures is compared...
VLDB
2007
ACM
14 years 5 months ago
2007
ACM
Abstract Peer-to-peer (P2P) networks have become a powerful means for online data exchange. Currently, users are primarily utilizing these networks to perform exact-match queries a...
ADBIS
2000
Springer
13 years 8 months ago
2000
Springer
Research in spatio-temporal databases has largely focused on extensions of access methods for the proper handling of time changing spatial information. In this paper, we present th...