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Subject: Re: dtd doubt
From: Lynda VanVleet <[log in to unmask]>
Reply-To:General discussion of Extensible Markup Language <[log in to unmask]>
Date:Thu, 19 Apr 2001 08:44:28 -0700

text/plain (68 lines)

First problem
A DTD is not an XML document so you need to delete the XML header - <?xml
version="1.0" encoding="UTF-8" ?>
The best way to validate a DTD is against an XML document or serveral XML
documents you create to conform to the way the DTD is supposed to work.


Lynda Van Vleet
Software Design Engineer
[log in to unmask]

-----Original Message-----
From: General discussion of Extensible Markup Language
[mailto:[log in to unmask]]On Behalf Of Almiro Perez
Sent: Thursday, April 19, 2001 7:56 AM
To: [log in to unmask]
Subject: dtd doubt

Hi to the list!!

  I will try to explain myself better. I´ve got a DTD, not an XML document,
and there´s only one DTD, nothing more. These are the first lines:

<?xml version="1.0" encoding="UTF-8" ?>
<!ELEMENT XMI (XMI.header, XMI.content?, XMI.difference*, XMI.extensions*) >
        xmi.version CDATA #FIXED "1.0"
        timestamp CDATA #IMPLIED
        verified (true | false) #IMPLIED>
<!ELEMENT XMI.header (XMI.documentation?, XMI.model*, XMI.metamodel*,
XMI.metametamodel*) >
<!ELEMENT XMI.documentation (#PCDATA | XMI.owner | |
XMI.longDescription | XMI.shortDescription |
XMI.exporter | XMI.exporterVersion |
XMI.notice)* >
<!ELEMENT XMI.longDescription ANY >
<!ELEMENT XMI.shortDescription ANY >
<!ELEMENT XMI.exporter ANY >
<!ELEMENT XMI.exporterVersion ANY >
<!ELEMENT XMI.exporterID ANY >
<!ELEMENT XMI.notice ANY >

        And it doesn´t appear anymore XMI.exporterID neither up in the
document nor down. It´s true. So, I would like to know if it is correct, if
it´s correct por XML language. Also I would like to know if this is possible
in a DTD file, and again in a DTD file, not in an XML file:

        I mean, the DTD is only this, not any more lines and disposed in
this order:

        <?xml version="1.0" encoding="UTF-8" ?>
        <!ELEMENT XMI (A, C)>
        <!ELEMENT B (#PCDATA)>
        <!ELEMENT A (#PCDATA)>
        <!ELEMENT C (#PCDATA)>

        I know this DTD isn´t very useful and has no meaningful, but just to
know the language of XML. Is it possible defining B (no more defined in the
DTD as you see)?  Is this code correct?

        Thanks a lot for yor time:

                Almiro Pérez

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