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  • To: 'Michael Champion' <mc@x...>, XML Developers List <xml-dev@l...>
  • Subject: RE: are native XML databases needed?
  • From: "Bullard, Claude L (Len)" <len.bullard@i...>
  • Date: Wed, 25 Aug 2004 14:26:29 -0500

Lockheed Martin (texas) did it for IETMs using SGML.  It 
was a favored design for IETMs.  It wasn't efficient 
for real time use, but for dynamic assembly of a 
deliverable, it worked great.  IOW:

1.  Author parts in a parts system, typically 
    relational.

2.  Bind that into an interactive deliverable.

And yeah, isn't that what we do with HTML and 
ASP, PERL, etc.?  All done before the web was 
a gleam.

A dynamically generated hypertext is just another report, 
or a collection of reports with scriptable intelligence. 
Do I need schemas for that?  Not all the time.  That 
is why systems like IADS made validation optional. 
In fact, support for DTDs was an add-on that I insisted 
on just because it made my job easier.  We worked 
the CASS system the same way even earlier.  Old ground.

You're right about the object-oriented standards 
issue, IMO.  I still think data objects scale 
better than distributing semantics, though.

len


From: Michael Champion [mailto:mc@x...]

My favorite example would be an industrial-strength technical 
manual. Codd proved that you CAN normalize all that ordered, 
hierarchically structured, textual and data-oriented information and 
pull it back together with the relational calculus, but I've never 
heard of anyone actually pulling that feat off with real data and real 
DBMS software.  [Sure, just a simple 100-way join, no problem  :-) ]

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