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RE: Notable declarative expressions?

  • From: "Costello, Roger L." <costello@mitre.org>
  • To: "xml-dev@lists.xml.org" <xml-dev@lists.xml.org>
  • Date: Tue, 20 Dec 2016 16:53:31 +0000

RE:  Notable declarative expressions?
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


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