Subject: Re: expressing DTDs with UML From: Francis Norton <francis@xxxxxxxxxxx> Date: Mon, 13 Sep 1999 17:37:05 +0100 |
"Sam.Walker" wrote: > [an interesting proposal to use UML diagrams to express DTDs] > For a more old-fashioned - but maybe equally effective - visualisation consider IBM railroad diagrams (eg http://www.software.ibm.com/ts/mqseries/library/manuals/amqgap/AMQGAP2X.HTM) They express DTD content models rather nicely, in that they can do sequence, choice, repetition and defaults, though you'd need some extra convention to distinguish between elements and attributes. They also have the advantages of being modular and compact. I know they're more flexible than they appear - although IBM use them [AFAIK] to document the syntax of single commands, I've used them very successfully to illustrate the permissable flow of calls within entire comms APIs. Francis. XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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