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RE: Difference Between DBMS/RDBMS

From: Mercadante, Thomas F <NDATFM_at_labor.state.ny.us>
Date: Tue, 25 Jun 2002 08:18:55 -0800
Message-ID: <F001.00486E3C.20020625081855@fatcity.com>


Ahhhh - but is a system truely "Relational" if they don't support foreign keys?
That did not happen within Oracle-Land until release 7 (maybe it was in 6.2 - I forget).

Anybody remember why there was never a release 6.1 - we went from 6.0 directly to 6.2???

Correct answer gets a virtual beer.

Tom Mercadante
Oracle Certified Professional

-----Original Message-----
Sent: Tuesday, June 25, 2002 11:14 AM
To: Multiple recipients of list ORACLE-L

Oracle was the first commercial Realtional Database Management System. And it was relational from day one (version two :), and it was built with relational theory in mind. IBM was the first to implement RDBMS though. It was called System R, or something, later it became known as DB2.

Take a look at this paper:
http://www.mcjones.org/System_R/SQL_Reunion_95/index.html

Very fascinating reading. They tell how Larry was trying to get tle list of DB2 error codes so that Oracle would be compatible with it. Also a bit about Larry luring IBM engeneers promising that they would become millionares with Oracle. He was right.

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  INET: ntufar_at_apb.com.tr

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Author: Mercadante, Thomas F
  INET: NDATFM_at_labor.state.ny.us
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