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Re: Various presentations, schema concepts, etc.

  • From: Francis Norton <francis@r...>
  • To: KenNorth <KenNorth@e...>
  • Date: Mon, 03 Jul 2000 19:04:41 +0100

Re: Various presentations


KenNorth wrote:
> 
> 
> AFAIK, the terms "schema" and "sub-schema" originated from the work of the
> CODASYL Data Base Task Group (DBTG) in the late '60s and early '70s. The
> logical model of the database was sets and sub-schemas defined the
> parent-child (owner-member) relationships. You traversed the sets in a
> manner similar to DOM tree walking. 

A friend of mine (are you there, Paul?) pointed out that XPath could end
up being to hiearchical databases what SQL was to relational databases.
Hmmm... and objects are somewhat hiearchical...

Francis.
-- 
Francis Norton.

Defy Convention? Deify Convention!

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