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Re: Newbie question:DTD problem(#PCDATA)

• To: Allen Chu <achu@d...>
• Subject: Re: Newbie question:DTD problem(#PCDATA)
• From: Marcus Carr <mcarr@a...>
• Date: Fri, 01 Nov 2002 09:21:29 +1100
• Cc: xml-dev@l...
• References: <000901c2811a$bb450270$1401a8c0@d...>
• User-agent: Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:1.1) Gecko/20020826

Allen Chu wrote:

> What I present in element bio is more than one #PCDATA or
> footnote. Changing to from "+" to "*" makes bio contain zero or more
> #PCDATA/footnote. In this case, neither #PCDAT nor footnote is required
> for bio. And that violates my original design. Therefore, I don't think
> "*" will make them equvalent from my understanding.

Your SGML DTD also allows no content, as #PCDATA is defined as zero or 
more characters. For that reason, SGML DTD developers more often use "*" 
instead of "+" for a mixed content content model, even though they are 
functionally equivalent. It's thought to be more descriptive - a 
reminder that <bio></bio> is a legal occurrence of a bio element.


-- 
Regards,

Marcus Carr                      email:  mcarr@a...
___________________________________________________________________
Allette Systems (Australia)      www:    http://www.allette.com.au
___________________________________________________________________
"Everything should be made as simple as possible, but not simpler."
        - Einstein

• References:
  • RE: Newbie question:DTD problem(#PCDATA)
    • From: "Allen Chu" <achu@d...>

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