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- From: Chris Maden <crism@oreilly.com>
- To: xml-dev@ic.ac.uk
- Date: Fri, 6 Aug 1999 16:46:52 -0400 (EDT)
[Mallikarjuna Sangappa]
> Are the following XML Documents valid
None of them are because they don't have DTDs. I suspect you meant,
"are they well formed?" which I will answer.
> 1.
>
> <PERSON>
> <FIRSTNAME>
> </FIRSTNAME>
> </PERSON>
Yes. A PERSON element contains a new line, a FIRSTNAME element, and
another new line. The FIRSTNAME contains only a new line.
> 2.
>
> <PERSON>
> <FIRSTNAME>
> </FIRSTNAME>
> </PERSON>
No. You start a PERSON element, which has text content of "
<FIRSTNAME>
" (the entity reference is resolved) but then you come to an end-tag
for an element type that was never opened.
> 3.
>
> <PERSON>
> <FIRSTNAME>
> </FIRSTNAME>
> </PERSON>
Yes. Here you have a PERSON element whose content is "
<FIRSTNAME>
</FIRSTNAME>
" (all text, not markup).
You may find the XML Recommendation useful:
<URL:http://www.w3.org/TR/REC-xml>.
-Chris
--
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