Coverages
(Getting Started with ArcGIS p 50)
Coverages contain primary, composite and secondary feature types.
Primary features in coverages are
- label points,
- arcs, and
- polygons.
Composite features are built from primary features.
Secondary features are
- tics,
- links,
- annotations which are used to provide text about the geographic features on the maps.
Label points can represent individual point features (e.g. wells, intersections etc). The points label or link the attributes to polygons. Each polygon in a coverage has a single label point with its feature ID number, usually at the center.