Results 271 to 280 of about 5,704,475 (316)

Optimizing Spatial Databases

Informatica Economica, 2010
This paper describes the best way to improve the optimization of spatial databases: through spatial indexes. The most commune and utilized spatial indexes are R-tree and Quadtree and they are presented, analyzed and compared in this paper. Also there are given a few examples of queries that run in Oracle Spatial and are being supported by an R-tree ...
Anda VELICANU, Åžtefan OLARU
openaire  

Decomposing spatial databases and applications

Proceedings 11th International Workshop on Database and Expert Systems Applications, 2002
Topological invariants of spatial databases can act as a basic structure to tackle relevant problems in the field. It turns out that the main concern in these problems is the manipulation of topological invariants by means of efficient algorithms. To this aim, we introduce the notion of boundary decomposition of a topological invariant and give a ...
CICERONE, SERAFINO, FRIGIONI, DANIELE, Di Felice P.   +2 more
openaire   +2 more sources

Clustering in Dynamic Spatial Databases

Journal of Intelligent Information Systems, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhang, J., Hsu, W., Lee, M.L.
openaire   +2 more sources

Spatial Databases

2020
Adam C. Winstanley, Peter Mooney
openaire   +2 more sources

dedale, a spatial constraint database

1998
This paper presents a first prototype of a constraint database for spatial information, dedale. Implemented on top of the O2 DBMS, data is stored in an object-oriented framework, with spatial data represented using linear constraints over a dense domain. The query language is the standard OQL, with special functions for constraint solving and geometric
Grumbach, Stéphane, Rigaux, Philippe, Scholl, Michel, Segoufin, Luc   +3 more
openaire   +2 more sources

Efficient Spatial Database Keyword Query Search

, 2020
L. Reddy, K. Prema
semanticscholar   +1 more source

3D building roof reconstruction from airborne LiDAR point clouds: a framework based on a spatial database

International Journal of Geographical Information Science, 2017
Rujun Cao, Yongjun Zhang, Xinyi Liu, Zongze Zhao   +3 more
semanticscholar   +1 more source

Relational spatial database and multi-criteria decision methods for selecting optimum locations for photovoltaic power plants in the province of Seville (southern Spain)

Clean Technologies and Environmental Policy, 2018
P. Díaz-Cuevas, J. Camarillo-Naranjo, Juan Pedro Pérez-Alcántara   +2 more
semanticscholar   +1 more source

Development of a spatial database and web-GIS for the climate of Greece

Earth Science Informatics, 2018
M. Vaitis, H. Feidas, P. Symeonidis, V. Kopsachilis, Dimitris Dalaperas, Nikoletta Koukourouvli, D. Simos, Symeon Taskaris   +7 more
semanticscholar   +1 more source

Exploiting historical rainfall and landslide data in a spatial database for the derivation of critical rainfall thresholds

Environmental Earth Sciences, 2017
D. Caracciolo, E. Arnone, F. Conti, L. Noto   +3 more
semanticscholar   +1 more source