• To: Dare Obasanjo <dareo@m...>
• Subject: Re: W3C Schema: Resistance is Futile, says Don Box
• From: Eddie Robertsson <erobertsson@a...>
• Date: Tue, 11 Jun 2002 13:01:40 +1000
• Cc: Amelia A Lewis <amyzing@t...>, Aaron Skonnard <aarons@d...>, Tim Bray <tbray@t...>, xml-dev@l...
• References: <8BD7226E07DDFF49AF5EF4030ACE0B7E0696F47C@r...>

> A.) I wouldn't call ID and IDREF co-occurrence constraints but instead
> identity constraints of which W3C XML Schema has xs:key, xs:keyref and
> xs:unique

Well, I guess that depends on the definition of co-occurence constraints.
To me a co-occurence constraint is a constraint that is applied between
different components of an XML document. With this definition identity
constraints would be a subset of co-occurence constraints.

Cheers,
/Eddie

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    • From: "Dare Obasanjo" <dareo@m...>

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