2-dimensional topological primitive

A value applied to the origin of a coordinate system to change the x-coordinate readings.

A value applied to the origin of a coordinate system to change the y-coordinate readings.

Abstraction of real world phenomena

Characteristic of a feature.

Catalogue containing definitions and descriptions of the feature types, feature attributes, and feature associations occurring in one or more sets of geographic data, together with any feature operations that may be applied.

The type of feature represented in a coverage. Coverage feature classes include arcs, nodes, label points, polygons, tics, annotation, links, boundaries, routes, and sections.

The definition (typing framework and properties) of a domain-specific application schema for a well-known class of geospatial features, in vector form (i.e., points, lines and polygons). For example: Transportation, Hydrographic, Electric Utility, etc.

Uniform Resource Identifier that identifies a feature

Separate databases that are structured, perhaps with middleware or special database access software, in such a way that they can be queried as a single database.

Point determined on the basis of the camera fiducial marks.

Index marks, typically four or eight rigidly connected with the camera body, which form images on the film negative and define the image coordinate reference system

In a database, another term for column.