60 search results - page 3 / 12 » Oracle8i Spatial: Experiences with Extensible Databases |
ICDE
1991
IEEE
15 years 1 months ago
1991
IEEE
Existing Database Management Systems (DBMSs) do not handle efficiently multi-dimensional data such as boxes, polygons, or even points in a multi-dimensional space. We examine acc...
DEXA
2004
Springer
15 years 3 months ago
2004
Springer
Efficient storage and retrieval of trajectory indexes has become an essential requirement for moving objects databases. The existing 3DR-tree is known to be an effective trajectory...
GEOINFORMATICA
2006
14 years 9 months ago
2006
Existing estimation approaches for spatial databases often rely on the assumption that data distribution in a small region is uniform, which seldom holds in practice. Moreover, the...
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GIS
2006
ACM
15 years 10 months ago
2006
ACM
Location information gathered from a variety of sources in the form of sensor data, video streams, human observations, and so on, is often imprecise and uncertain and needs to be ...
MOBIDE
2010
ACM
14 years 9 months ago
2010
ACM
Traditional location-based services recommend nearest objects to the user by considering their spatial proximity. However, an object not only has its distance but also has its dir...