RE: [xml-dev] Notable declarative expressions?

["Costello, Roger L." <costello@mitre.org>]

u123724 wrote:

> XML Schema is a language for describing a grammar, 
> not a "data model"

Recently I saw this definition of "model":

	The difference between a model and
 	an instance is that a model represents
 	a set of instances.

Under that definition, it seems reasonable to call an XML Schema a "data model" since one XML Schema is created and it represents a set of XML instances.

Do you agree?

/Roger