Simple Feature Access – Part 1: Common Architecture

This part of Simple Features Access (SFA), also called ISO 19125, describes the common architecture for simple feature geometry. The base Geometry class has subclasses for Point, Curve, Surface and GeometryCollection. Each geometric object is associated with a Spatial Reference System, which describes the coordinate space in which the geometric object is defined.

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Document title Version OGC Doc No. Type
OpenGIS Implementation Specification for Geographic information – Simple feature access – Part 1: Common architecture 1.2.1 06-103r4 IS
OpenGIS Implementation Specification for Geographic information – Simple feature access – Part 1: Common architecture 1.2.0 06-103r3 D-IS
OpenGIS Implementation Specification for Geographic information – Simple feature access – Part 1: Common architectu 1.1.0 05-126 D-IS

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Overview

Currently, the ISO 19125: Simple Features SWG is working to update the OGC Simple Features standards. The purpose of the ISO 19125 SWG is to update the common standard that is both the OGC Simple Features Implementation Standard and the ISO 19125 Standards (Part 1: Common Architecture, and Part 2 SQL Option) to:

  • Maintain and correct the current standard, 
  • Synchronize with SQL/MM: Part 3 Spatial,
  • Introduce new geometry types,
  • Support 3D coordinates, and Linear reference systems including segmented attributes.

Additional documentation that the SWG has produced are:

OGC 19-029r7 Features and Geometry Part 2 Measure

OGC 17-087r13 Features and Geometries Part 1 Feature Models