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   Re: XSchema Spec Section 2.2, Draft 1

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  • From: "Michael Kay" <M.H.Kay@eng.icl.co.uk>
  • To: <xml-dev@ic.ac.uk>
  • Date: Wed, 24 Jun 1998 16:07:41 +0100

>I must be missing something here, because I can't see any
advantage to using
>mixed content here.  In fact, your inability to specify the
format you want in
>your DTD is just another argument to avoid mixed data.  Why
not just use the
>following content models, which you've probably already
thought of?
>   NameInfo (Name, Source?, Confidence?, Changed?, Note?,
>   Name (#PCDATA)
>   Source (#PCDATA)
>   Confidence (#PCDATA)
>   ...
1. Because the optional bits are usually absent, so in most
cases I would just be writing <NAMEINFO><NAME>Fred
2. I need to nest the structure because it can get
arbitrarily deep: I might want a Note about the Date of the
ProfessionalQualifications of the Author of the Source of
the Name of the Person.

As I mentioned, I've seen the same requirement arise in
other "investigative" databases, e.g. in criminal
intelligence work.

Mike Kay

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