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   Re: [xml-dev] Formal definition of PSVI (was [xml-dev] Where have the el

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----- Original Message -----
From: "Eric van der Vlist" <vdv@dyomedea.com>
To: "xml-dev" <xml-dev@lists.xml.org>
Sent: Sunday, December 09, 2001 6:58 PM
Subject: Re: [xml-dev] Formal definition of PSVI (was [xml-dev] Where have the
element types gone?)

> I am not saying that it's easy to follow ;=) , but descriptions of the
> PSVI are scatered all over the W3C XML Schema recommendation, such as
> (to take the first example which comes in part 1):

Until you mentioned this I hadn't put all of it together but on taking a
further look at the structures part of the schema recommendation I came across


which is enough to clarify what PSVI means, at least to me.

> Otherwise, if you want to see angle brackets, Richard Tobin and Henry
> Thompson have published a "a first cut at an XML serialisation of the
> (PSV) Infoset" which is non normative but gives a more concrete idea of
> what the beast looks like:
> http://www.w3.org/2001/05/serialized-infoset-schema.html
> Hope this helps!

I came across this in the past but couldn't make much sense of it primarily
because I found it before reading the infoset spec or noticing the PSVI
contributions sections of the schema recommendation. Now it makes more sense
and of course launches a new set of questions which I'm sure many have heard
before. :)

So what exactly is the consesus opinion of the W3C or members of xml-dev as to
how the PSVI data of a document is attached to it to avoid revalidation on
subsequent requests for PSVI data if the document has not been modified since
the last request?

No matter how many shorts we have in the system, my guards will be
instructed to treat every surveillance camera malfunction as a full-scale

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