266 search results - page 9 / 54 » On first-order topological queries |
SSD
1995
Springer
13 years 11 months ago
1995
Springer
We present a data structure used to represent planar spatial databases in the topological data model. Conceptually, such databases consist of points, lines between these points, an...
GIS
1998
ACM
13 years 7 months ago
1998
ACM
Spatial relations are the basis for many selections users perform when they query geographic information systems (GISs). Although such query languages use natural-language-like te...
SMI
2010
IEEE
13 years 5 months ago
2010
IEEE
Abstract--Many representation schemes have been proposed to deal with non-manifold and mixed dimensionalities objects. A majority of those models are based on incidence graphs and ...
SSD
1993
Springer
13 years 11 months ago
1993
Springer
Topological relationships between spatial objects represent important knowledge that users of geographic information systems expect to retrieve from a spatial database. A di cult t...
CJ
2010
13 years 7 months ago
2010
Abstract. Motivated by research on how topology may be a helpful foundation for building information modeling (BIM), a relational database version of the notions of chain complex a...