>Archive Index
>comp.text.xml Archive Home
>Recent entries

>Thread Prev - DTD / XML schema question
[Thread Next]

Re: DTD / XML schema question

From: Martin Honnen <mahotrash@-----.-->
To: NULL
Date: 4/2/2006 7:38:00 PM

kurtrips@g... wrote:

> What I want to achieve:
> <ARTICLE type="CoverStory">ABCD</ARTICLE>
> <ARTICLE type="Sports">XYZ</ARTICLE>
> 
> ==> There should be one and only one ARTICLE element which has
> "CoverStory" as the value of its "type" attribute.
> 
> How do I do this using DTD or XML-schema?

With a DTD you could define an attribute of type ID, but that way that 
attribute value (e.g. CoverStory) must be unique for all attributes of 
type ID in the document.
With a W3C XSD schema you could define an xs:unique constraints for that 
ARCTICLE element with the attribute type.

> Can I do this if "type" is made a child-node of ARTICLE rather than an
> attribute.

Not with a DTD but the schema ways works with a child node too.

-- 

	Martin Honnen
	http://JavaScript.FAQTs.com/

>Thread Prev - DTD / XML schema question
[Thread Next]

>Archive Index
>comp.text.xml Archive Home
>Recent entries

Altova Mailing List Archives

Re: DTD / XML schema question