Re: [xml-dev] Incongruous UML data models and XSD data models

["G. Ken Holman" <gkholman@CraneSoftwrights.com>]

At 2016-06-27 21:38 +0100, Peter Flynn wrote:
> Near&Far did at least present its diagram sideways, but I think that may
> have been because it's more usual to have XML documents with greater
> width (siblings, represented vertically) than depth (descendants,
> represented horizontally).
Yes, the root is on the left, so reading right gets deeper and 
reading down is in sequence order.  That started about 27 years ago.

And that convention led me to represent XML, SGML and HTML in data 
flowchart diagrams as a triangle, pointed left with the vertical on 
the right.  It has worked well for all those years and I haven't 
found a conflict.  I use the parallelogram for unstructured text 
files, a lightning bolt for a feed, a box for a process, the 
traditional sine-wave-cut paper for a PDF file and the simplified 
trash can for a database to mimic a stack of platters.

As of Thursday I will have been flowcharting for 45 years (I started 
programming in FORTRAN IV on June 30, 1971) and I still end up 
drawing a lot of data flow diagrams.

I haven't seen the triangle documented anywhere else for 
flowcharting, but I propose that as a graphical convention of a 
marked up file as a whole or part.

. . . . . . . . Ken


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