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- From: Stefan Haustein <firstname.lastname@example.org>
- To: "Simon St.Laurent" <email@example.com>
- Date: Fri, 11 Feb 2000 13:23:55 +0100
"Simon St.Laurent" wrote:
> I hope that we can find out during the Candidate Recommendation (or
> possibly sooner) whether the size and scope of the XML Schema
> specifications lead to a large number of less-than-completely-interoperable
> functionality subsets.
The problem is that you cannot just take a subset: concepts are
but you cannot take out one completely without needing some additions
For example, you have the content-type that can be empty, which seems
equivalent to an empty type definiton. But you cannot remove the
content-type completely because you cannot express mixed content
in the <type> definition. There was a nice suggestion on the
schema-comments list of introducing <pcdata> inside <type>,
removing the need of the content-type, but I did not find
any senseful response on the list...
> I'm hoping that XML Schemas prove simple and efficient to implement, but
> (based on my readings of the latest drafts), I can't say I'm optimistic.
Implementing XML Schema is not really fum: You do more consitency
checks like "what, if content-type is empty and the type definition not?
Throw an error? What is the default for content type?" than
University of Dortmund
Computer Science VIII