Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Last time I checked, there were only PDFs with class diagrams available on the net (downloadable for at least 140 swiss francs a piece) , but not the UML models in a native format of a database modeling tool.

These PDFs are a pain in the neck to work with.

In the appendix of some standards documents there were xml printouts. For GML there are xsd files available but they are very complex. For geographic metadata there are some xsds defined in this PDF.

Luckily, parts of this document is available here, for instance. it says at the top of each xsd file:

This file was generated from ISO TC/211 UML class diagrams == 01-26-2005 12:40:02

Are these UML models of the OGC standards available online somewhere? Maybe someone has converted these ##### xsds to a more usable format?

share|improve this question
up vote 8 down vote accepted

As far as I know, UML models are not included with OGC specifications. FYI, the full set of XSDs for published specifications are available here: Also, you should be able to download the OGC specs (not ISO) for free from here. You could also ask Carl Reed or Raj Singh about making any of UML available, their emails are here:

share|improve this answer
Ah,, I remember that site. I'll contact these guys when I really need to work with the OGC standards, now I just wanted to have a brief look. I think I can get a head-start by throwing some xpath-expressions at the xsds. – knb Jul 12 '11 at 20:42

Following this discussion, it seems you must refer to UML ISO diagrams for most UML OGC diagrams. You can get this diagrams on

share|improve this answer
That's also a useful answer. These interactive reports (presumably exported from someone's Enterprise Architect) showing clickable imagemaps are indeed a bit better than class diagrams in PDFs. – knb Jul 13 '11 at 18:18

CSIRO makes them available:

Also look at ShapeChange as a way to transform UML to GML

share|improve this answer

NOT OGC But open
ESRI used to have a some uml models with a few of the geodatabase models. I think last look I couldn't find one for what I was working on. You might dig arounnd...
I did hit a familiar area and found the case tools import.

Gdb Model page @ ESRI

Utility Model Tools

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.