Simple Features

• OpenGIS Simple Features Access (ISO 19125) — http://www.opengeospatial.org/standards/sfa

• OpenGIS Simple Features for SQL — http://www.opengeospatial.org/standards/sfs

Definuje vektorové datové typy

• Bod

• LineString

• Line

• LinearRing

• Polygon

• GeometryCollection

• MultiPoint, MultiLineString, MultiPolygon

A operace (metody) nad těmito geometriemy

Dále způsob zápisu ve formátech WKT (Well Known Text) a WKB (Well Known Binary).