> >> implied by XML or RDF. By XML "data model", I mean:
> >>
> >> a) you have a tree of nodes, and all nodes must have a name
> >> b) a node may contain other nodes, literal values, or nothing
> >> c) node values may reference other nodes
> >
> A correction on the statement that "all nodes must have a name".
Right, I was talking about "XML data model" -- element and attribute
names have to be named, and then the content nodes could be considered
"values". For RDF data model, I just said that properties (predicates)
need to be named. It seems when people model data in XML, that is the
very thing that often gets overlooked (giving names to properties);
especially in containment hierarchies.