mct at foyt.indyrad.iupui.edu
Thu Sep 10 21:45:24 BST 1998
John Cowan <cowan at locke.ccil.org> wrote:
mct> I must confess that I don't understand the problem, but it doesn't
mct> look hard. To the naive eye, I would just read in the relevant DTD's,
mct> and perform the same "Fully Prefixing" operation. Since the DTD's
mct> would all be prefixed consistenly, can't we just toss all the
mct> productions into the pot, and turn the crank? How do they interact,
mct> if they all have differently named elements and interactions?
jc> Not at all, and that's the point. You won't be able to place elements
jc> from one DTD inside elements from another, unless the enclosing
jc> element has an ANY content model. What takes work and thought is
jc> figuring out how the content models of the various elements should be
jc> extended (or not) to incorporate elements from other DTDs. I don't
jc> see how *any* tools whatever can help you much with this, except in
jc> the mechanical parts.
First a question:
Can I have a DTD that mentions elements
If so, then I can easily nest elements from one dtd inside another.
In the example below, the N1:BOOK element will contain N1:NAME elements,
and elements from a different namespace N2:ADDRESS
If DTD1, which is denoted by URI "uri:dtd1" says
<!ELEMENT N1:BOOK (N1:NAME N2:ADDRESS) >
<!ELEMENT N1:NAME >
and DTD2 says (notice that the prefix K doesn't matter, only the definition
<!ELEMENT K:ADDRESS >
then an valid instance document could be
which would conform to DTD1.
What's wrong with this picture?.....
For my needs, DTD1 is a perfectly fine DTD. It defines
local stuff (NAME,BOOK), and references other DTD's to define the sub pieces.
Mark Tucker tucker_m at regenstrief.iupui.edu
Regenstrief Institute phone: (317) 630-2606
1001 W. 10'th St; Indianapolis, IN; 46202-2859; fax: (317) 630-6962
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