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Which is a shame. Having, for example, to rewrite the XHTML schema just so I can include SVG fragments makes building compound documents almost impossibly difficult. I suspect we need to think about more types of validity than those currently offered by DTDs, XML Schemas, Schematron, and RELAX NG. Two types of partial validation that would be useful for constructing compound documents are: 1) Validate the language you know and ignore fragments headed by unknown elements. 2) Start at the top and only start validating when you hit an element you know. (The opposite of #1.) I suspect that, with a bit of thought, people can find other use cases and types of validation to fit them that are not met by current definitions. -- Ron Bob Foster wrote: > Roger L. Costello wrote: > [snip] > > I interpret Murata's slides as saying that with NVDL you can insert > elements > > from another namespace into the <Book>...</Book> element. > > I don't. Sticking arbitrary namespaces into an element would fail to > validate against the schema unless it specifically allowed for such > insertions, e.g., through wildcards. > > What NVDL should do is allow you to validate inserted-namespace > subcomponents that _are_ otherwise valid but are not fully described by > the schema for Book.
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