linear referencing
layer
structured query language
data structures
object orientation
triangulated irregular networks
virtual reality modeling language
three-dimensional GIS
Z-values
integrity constraints
topology
tessellation
discrete versus continuous phenomena
elevation
extensible markup language
spatial index
database management systems
open standards
digital elevation model
raster
spatiotemporal data models
computer-aided drafting
methods
network data structures
Data modeling is the logical construction of an abstraction of information to represent data in an application, communication protocol, or database. This entry gives a general overview of this process, with discussions of the special concerns that arise in today's geographic information implementation environments. [Source: Encyclopedia of Geographic Information Science; Data Modeling]
data modeling
spatial database
geometric primitives
geographic information science
scalable vector graphics