Doctype, namespace etc.

"Sigurd Lerstad" <[email protected]> Fri, 10 May 2002 01:16:06 -0700

Newsgroups	gmane.comp.web.general
Message-ID	<049601c1f7fa$ef250530$390573d5@mmstudioproj>

Hello,

I'm a bit confused, When using a

<DOCTYPE....

inside an xml document, it points to the url of a dtd, so it's easy to load
generic xml documents, but mixing xml from different namespaces is
impossible this way? (am I correct).. some xml documents only contain
namespace declaration like

<html xmlns="...." >,

then you know the namespace, but you don't know where the dtd is (or
schema), or you can have

<html xsi:schemaLocation="...", then you know the schema location...

While some documents only contain something like

<html...

So many possibilities, so I'm wondering.

Can an xsi:schemaLocation point to a dtd as well as a schema?

If you only have a namespace, does a program have to hardcode the url to the
dtd or schema (or have it stored on the harddisk)?

In the case of embedded mathml/svg inside xhtml, how can you validate that
document against the xhtml dtd? (without getting errors)

thanks,

--
Sigurd Lerstad