321 search results - page 22 / 65 » A Topological Data Model for Spatial Databases |
GEOINFO
2003
13 years 9 months ago
2003
One of the main challenges for the development of spatial information theory is the formalization of the concepts of space and spatial relations. Currently, most spatial data struc...
GIS
2006
ACM
14 years 8 months ago
2006
ACM
Situational awareness (SA) applications monitor the real world and the entities therein to support tasks such as rapid decision-making, reasoning, and analysis. Raw input about un...
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VLDB
2004
ACM
14 years 8 months ago
2004
ACM
With the recent and continuing advances in areas such as wireless communications and positioning technologies, mobile, locationbased services are becoming possible. Such services ...
GIS
2008
ACM
14 years 8 months ago
2008
ACM
Many aspects of spatial language concerned with relationships between spatial entities are essentially vague. Current GIS technology provides very little support for dealing with ...
PODS
1999
ACM
14 years 14 hour ago
1999
ACM
One of the most important types of query processing in spatial databases and geographic information systems is the spatial join, an operation that selects, from two relations, all...