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- From: John Cowan <email@example.com>
- To: XML Dev <firstname.lastname@example.org>
- Date: Fri, 15 Jan 1999 09:51:28 -0500
Roger L. Costello wrote:
> Suppose that I create a DTD (BookCatalogue.dtd). In this DTD I define some
> elements, attributes, entities, etc. I define the relationships between
> the elements, attributes, etc. I place BookCatalogue.dtd in a directory:
> Is this a namespace? That is, is the file itself (BookCatalogue.dtd) a
No, not as such. To have a namespace, you must define attributes
*in the document* that have the form
where "some URI" is intended to remain stable.
> In all the examples that I see in the namespace spec they don't refer to a
> specific file. Instead, they refer to "some place", such as:
> So, perhaps the "directory" that BookCatalogue.dtd resides in is the
> namespace? i.e.,
It can be used as such if you decide to do so. Or you can refer
to the DTD itself as the namespace name. Or any URL you want;
the URL does not have to refer to anything in particular.
This wouldn't be so useful, because it means different things on
different hosts. But again, the URI is just used as a thing to
compare to determine if two namespaces are the same or different.
John Cowan http://www.ccil.org/~cowan email@example.com
You tollerday donsk? N. You tolkatiff scowegian? Nn.
You spigotty anglease? Nnn. You phonio saxo? Nnnn.
Clear all so! 'Tis a Jute.... (Finnegans Wake 16.5)
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