3456 search results - page 126 / 692 » Semantics in Spatial Databases |
DEXA
1997
Springer
14 years 11 days ago
1997
Springer
Abstract. In this paper, we consider a multidatabase system which consists of media databases and traditional alphanumeric databases. The semantic relationships which may exist amo...
DBKDA
2009
IEEE
14 years 3 days ago
2009
IEEE
Most database applications are designed according the ANSI/SPARC architecture. When it is used, a large amount of semantics of data may be lost during the transformation from the ...
SIGMOD
2003
ACM
14 years 8 months ago
2003
ACM
In this paper we propose an approach that enables mobile clients to determine the validity of previous queries based on their current locations. In order to make this possible, th...
ER
2004
Springer
14 years 1 months ago
2004
Springer
A progressive spatial query retrieves spatial data based on previous queries (e.g., to fetch data in a more restricted area with higher resolution). A direct query, on the other si...
VLDB
2004
ACM
14 years 1 months ago
2004
ACM
In this paper, we address the maintenance of spatial semijoin queries over continuously moving points, where points are modeled as linear functions of time. This is analogous to t...