1430 search results - page 255 / 286 » Query operations for moving objects database systems |
COMPGEOM
1996
ACM
15 years 2 months ago
1996
ACM
In this paper we show how to traverse a subdivision and to report all cells, edges and vertices, without making use of mark bits in the structure or a stack. We do this by perform...
145
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ICTL
1994
15 years 2 months ago
1994
Commonsense knowledge often omits the temporal incidence of facts, and even the ordering between occurrences is only available for some of their instances. Reasoning about the temp...
DOLAP
2003
ACM
15 years 3 months ago
2003
ACM
Motivated by the need for more flexible OLAP systems, this paper presents work on logical integration of external data in OLAP databases, carried out in cooperation between the D...
SSD
2009
Springer
15 years 4 months ago
2009
Springer
The standard database mechanisms for concurrency control, which include transactions and locking protocols, do not provide the support needed for updating complex geographic data i...
116
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EUROCAST
1997
Springer
15 years 2 months ago
1997
Springer
The ability to detect object size, location and movement is essential for a visual system in either a biological or man made environment. In this paper we present a model for esti...