XSD: Proposed Goals, Rev. 3

Jacek Ambroziak - Sun Microsystems Labs BOS Jacek.Ambroziak at East.Sun.COM
Fri May 29 17:42:51 BST 1998


> At 03:04 PM 5/28/98 -0700, Andrew Layman wrote:
> >(As I use the terms, "metadata" means descriptive information summarizing or
> >supplementing a document, while "schema" means a collection of named items
> >and their definitions, which names and definitions are necessary for
> >understanding the document.  For example, a card catalog entry and a book
> >review are both metadata (relative to the book) while a dictionary and
> >grammar are schema.)
> 
> Supposing for the sake of argument that we accept these definitions
> of the two terms, is the difference important?

Personally, I like the distinction.

> It's far from clear to me that all information about information can be 
> partitioned into "that which summarizes/supplements" and "that which is
> necessary to understand".  Hmmm, if you re-write that second

The first class is external,additional,open-ended...

The second is essentially a part of the document itself
and a part of the interpretation ("understanding") of the doc:
it is constitutive for what the doc IS.

> condition as
> "that which can be used to support formal validation" then it starts
> to sound like a really material distinction... boy, I get nervous when
> we start bandying about the term "understand". 

How about "Understand" == "interpret, have a blueprint for
assigning intended design to document's data".


> interesting.  But these
> are matters certainly open to debate.
> 

Yes.

--Jacek



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