• To: "Joe English" <jenglish@f...>,<xml-dev@l...>
• Subject: RE: modeling, validating and documenting an xml grammar
• From: "Mike Fitzgerald" <mike@w...>
• Date: Wed, 18 Jun 2003 03:29:03 -0700
• Importance: Normal
• In-reply-to: <200306172155.h5HLth113469@d...>

Joe English wrote:
> What are the real-world use cases of minOccurs and maxOccurs?
> In my experience, occurrence constraints specifying anything
> other than zero, one, or many are almost always an indication
> of a bad design decision somewhere in the system.

The lack of compelling use cases is most probably why M-N didn't make it
into RELAX NG v1.0. The deficiency is not a big problem. Maybe the TC saw it
as syntax sugar? Don't remember.

> (Or maybe that *is* the use case?  To be able to accurately
> describe badly normalized legacy RDBMSs and other such things?)

Don't know, but I'd be interested to know. Who out there is using
minOccurs/maxOccurs in XML Schema beyond zero-one-many? Can you live without
minOccurs/maxOccurs or do you gotta have it?

Mike

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