W3C home > Mailing lists > Public > xmlschema-dev@w3.org > December 2001

RE: Expressing varying cardinalities of unordered elements in a complex-type

From: <noah_mendelsohn@us.ibm.com>
Date: Tue, 4 Dec 2001 17:04:12 -0500
To: "Mason Lee" <mgl@netspace.org>
Cc: eddie@allette.com.au, xmlschema-dev@w3.org
Message-ID: <OF57D5CE89.E58CEDFC-ON85256B18.0079B12E@lotus.com>
Mason Lee asks:

>> Out of curiousity, does anyone have any 
>> links to discussions as to why
>> this sort of constraint wasn't included 
>> in the W3C XML Schema?

My note of Nov. 9 covers some of the history regarding "all".  Though I 
was specifically responding to a question about deriving extensions, the 
reasons for limiting maxOccurs to 1 are:  an 80/20 cut attempting to keep 
it simple and to meet a basic need for mapping to unordered fields.  Hope 
this helps.

[1] http://lists.w3.org/Archives/Public/xmlschema-dev/2001Nov/0109.html

Noah Mendelsohn                                    Voice: 1-617-693-4036
Lotus Development Corp.                            Fax: 1-617-693-8676
One Rogers Street
Cambridge, MA 02142
Received on Tuesday, 4 December 2001 17:16:58 UTC

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