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.

A feature is a cartographic point, line or polygon object with a spatial location in the real-world landscape that can be used in a GIS for storage, visualization and analysis.

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.

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.

In a database, another term for column.

[data structure] An attribute field (or item) are characteristics used to describe each feature in a geographic data set usually viewed as columns in a table.

Named set of records stored or processed as a unit.