3456 search results - page 130 / 692 » Semantics in Spatial Databases |
ADC
2003
Springer
14 years 1 months ago
2003
Springer
Selectivity estimation of queries not only provides useful information to the query processing optimization but also may give users a preview of processing results. In this paper,...
ER
2008
Springer
13 years 10 months ago
2008
Springer
Abstract. Both Geographic Information Systems and Information Retrieval have been very active research fields in the last decades. Lately, a new research field called Geographic In...
GEOINFORMATICA
2006
13 years 8 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...
ECRTS
2004
IEEE
13 years 12 months ago
2004
IEEE
In this paper we present a concurrency control algorithm that allows co-existence of soft real-time, relational database transactions, and hard real-time database pointer transact...
GIS
2005
ACM
14 years 9 months ago
2005
ACM
The management of moving objects has been intensively studied in the recent years. A wide and increasing range of database applications has to deal with spatial objects whose posi...