403 search results - page 16 / 81 » Constraint Databases and Geographic Information Systems |
72
Voted
PODS
1999
ACM
15 years 1 months 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...
114
Voted
RULES
1993
Springer
15 years 1 months ago
1993
Springer
Semantic models have shown the utility of arbitrary user-de ned relationships for de ning the semantics of database information, while objectoriented models have developed a stron...
SCCC
1997
IEEE
15 years 1 months ago
1997
IEEE
In a database system, read operations are much more common than write operations, and consequently, database systems have been read optimized. As the size of main memory increases...
147
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ICDE
1998
IEEE
15 years 11 months ago
1998
IEEE
We advocate a desktop virtual reality (VR) interface to a geographic information system (GIS). The navigational capability to explore large topographic scenes is a powerful metaph...
JCSS
2000
14 years 9 months ago
2000
We investigate a class of path constraints that is of interest in connection with both semistructured and structured data. In standard database systems, constraints are typically ...