RE: [xml-dev] Invalid XML

["DuCharme, Bob (LNG-CHO)" <bob.ducharme@lexisnexis.com>]

"Validity" means that the document has a DOCTYPE declaration that points to a DTD and the document conforms to the declarations in that DTD. Your sample shows no reference to a DTD, so validity is not an issue. It is well-formed, which is why parsers have no problem with it.

 

Bob DuCharme            www.snee.com/bob         <bob@ 
snee.com>  see http://www.snee.com/bob/xsltquickly for
info on book "XSLT Quickly" from Manning Publications.

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From: Daniel Zingaro [mailto:daniel_zingaro@cogeco.ca]
Sent: Tuesday, October 19, 2004 3:50 PM
To: xml-dev@lists.xml.org
Subject: [xml-dev] Invalid XML

Hi all,

 

According to the XML specification, I believe the following nesting structure to be invalid in XML. However, rxp on my Windows machine issues no warnings to me when parsed. Is this in fact invalid?

 

 <?xml version="1.1"?>
<library>
<book>
<title>Book Name</title>
<chapters>
<name>first chapter</name>
<name>second</name>
...
<name>last</name>
<subsection>
<name>I expect this to be illegal, since name is defined in chapters, and also somewhere else in its content, namely subsection.</name>
</subsection>
</chapters>

</book>
</library>

 

Thanks very much,

Dan