253 search results - page 15 / 51 » Spatial Data Integrity Constraints in Object Oriented Geogra... |
ESWS
2010
Springer
13 years 5 months ago
2010
Springer
Abstract. RDF will often be the metadata model of choice in the Semantic Sensor Web. However, RDF can only represent thematic metadata and needs to be extended if we want to model ...
SSD
2009
Springer
14 years 1 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...
ICTAI
1993
IEEE
13 years 11 months ago
1993
IEEE
Tropes, an object-based knowledge representation system, has been added three important intertwined features: constraints, composite objects and tasks. Constraints provide a decla...
IGIS
1994
13 years 10 months ago
1994
There have been many interpolation methods developed over the years, each with their own problems. One of the biggest limitations in many applications is the non-correspondence of...
VLDB
1994
ACM
13 years 10 months ago
1994
ACM
We describe the integration of a structuredtext retrieval system (TextMachine) into an object-oriented database system (OpenODB). We use the external function capability of the da...