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Re: And the DTD says, "I'm NOT dead yet!!"
- From: Bob Kline <firstname.lastname@example.org>
- To: Norman Walsh <email@example.com>
- Date: Tue, 09 Jan 2001 09:33:09 -0500 (EST)
Norman Walsh wrote:
> | BTW, how are you handling entities in your conversion effort? Seems that
> | Schemas has sort of punted on this issue currently, which might not be
> | a problem in the data centric world and maybe not an issue in XML if some
> | one would ever implement the fragement standard.
> DocBook doesn't define any entities, so I didn't have to cross that
> bridge. If I'd had to cross it, I don't know how I would have. That's
> a gaping chasm.
XML Schema does have some significant holes, but for the most part I
don't think this is one of them. The most common uses I have seen for
1. to create macros for commonly used content-model groups; and
2. to create a kludge for working around the lack of support for
namespaces in DTDs.
The first is handled fairly well by named groups (<xsd:group name=...)
and the second problem doesn't exist because XML Schema supports
namespaces. External entities in DTDs correspond pretty well to the
<xsd:include ...> element in XML Schema.
Perhaps someone who *really* knows what they're talking about (Henry?)
can elaborate or correct any misinformation I've dropped here. :->}