577 search results - page 5 / 116 » An abstract model of three-dimensional spatial data types |
ER
2001
Springer
14 years 17 hour ago
2001
Springer
Abstract Spatio-temporal extensions to data models have been an active area of research for a number of years. To date, much of this work has focused on the relational data model, ...
SSD
1997
Springer
13 years 11 months ago
1997
Springer
Abstract: In many geographical applications there is a need to model spatial phenomena not simply by sharp objects but rather through indeterminate or vague concepts. To support su...
JACM
2007
13 years 7 months ago
2007
onal Numbers as an Abstract Data Type1 J A Bergstra2 University of Amsterdam, Informatics Institute, Kruislaan 403, 1098 SJ Amsterdam, The Netherlands J V Tucker3 Department of Com...
SSD
1993
Springer
13 years 11 months ago
1993
Springer
: Spatial data types or algebras for database systems should (i) be fully general (which means, closed under set operations, hence e.g. a region value can be a set of polygons with...
VRML
1998
ACM
13 years 11 months ago
1998
ACM
In its current state, VRML does not provide support for interaction and on-line access to databases, even though these are two fundamental issues for business applications. We hav...