Roger--
You need to distinguish between RDF and RDF/XML. RDF is not a markup language, and has no notions of parent and child elements (or any other kind of elements, for that matter).
--Frank
On Sep 26, 2011, at 6:49 PM, Costello, Roger L. wrote:
> Hi Folks,
>
> These two markup languages have a consistent definition of what parent elements and child elements mean:
>
> 1. RDF
> 2. GML
>
> Both languages specify that parent elements represent a resource or object and child elements represent properties or attributes.
>
> Are those the only markup languages that have a consistent definition of what parent elements and child elements mean?
>
> If one is creating a markup language and wants to adopt a consistent definition for parent elements and child elements, is resource/object and property/attribute the only way to accomplish it?
>
> Is an Object-Oriented approach to markup the only viable approach when one wants to have a consistent definition for parent elements and child elements? That would be quite astonishing, given that people such as Tim Bray argue that "XML is 180 degrees apart from OO".
>
> /Roger
>
>
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