Talk:System context diagram

Type of DFD

The current write up of System context diagram mistakenly assumes that context diagrams are necessarily a type of DFD. Historically, context diagrams were introduced with classic structured systems analysis, and in that form were presented as DFDs. However, context diagrams are used in other approaches, including OO models and Jackson's problem frames, where they employ different diagramming notations depending on the formalism they follow, e.g. a system object surrounded by actors or a set of interconnected problem domains.....

Kevlin 11:21, 19 July 2007 (UTC)

Contect map

Is a system context diagram the same as a "context map"?

Brilong87 (talk) 14:20, 6 July 2009 (UTC)

I don't think so. Wikipedia doesn't have an article on context maps. And if you search for images.google for "context map" you will find an other type of images, then the images described here. Just look for "System context diagram" as well and compare the results yourself. It seems to me most context maps are geographical maps, while the SCD's are systems models.

-- Marcel Douwe Dekker (talk) 19:35, 6 July 2009 (UTC)

Disparity between content and illustration for Architecture Interconnect Diagram

The illustration used (in the Alternatives section) seems to have come from Yellowstone (presumably the national park), whereas the content describes it as having come from the Albuquerque Police Department. This seems to be an error, but I don't have the appropriate source information to correct either one.

Alan (talk) 23:43, 30 January 2012 (UTC)

Meaning of arrows

Would be useful to discuss what arrows represent in relationships. Is there a convention or a standard for this? — Preceding unsigned comment added by Dmjm20 (talk • contribs) 23:58, 27 July 2020 (UTC)

APD

@Mdd: in this Old revision of system context diagram you mention the Albuquerque Police Department, but the relevance is unclear though the text persists to the current version. Could you provide (fittingly) some context? Arlo James Barnes 03:48, 17 February 2024 (UTC)

Thanks, indeed in my 2008 contributions to this article, see here, I brought up the context diagram developed in their environment in the US Department of Transportation, Office of Operations (2006), Regional ITS Architecture Guidance Document. July 2006. In that time, 15 years and 250k edits ago, I think I had scattered the internet looking for examples to use. It can happen that a single case pops up, and if then it is published in a US gov publication I might have used it. But I will look into this some more.

From that time I do remember that this specific type of diagram is very important beside the regular most common and often standardized system process diagrams.In those days and ever since little real substantial theory has been developed as far as I know about this more general type of diagram. It is about the same in technical drawing with the assembly drawing (samenstellingtekening).

Now I looked into the mentioning in the article, and the source still online and find the "Figure 17: Greater Yellowstone Rural ITS Architecture Interconnect Diagram" which I believe was exactly what I wanted to show in this article. The article itself gives a nice case how this type of diagram is embedded in such an analysis. But I am not sure what you want to hear. I hope this helps. Best regards, -- Mdd (talk) 15:03, 17 February 2024 (UTC)