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Home -> Community -> Mailing Lists -> Oracle-L -> RE: logical differing from physical
Subtyping is one reason - I have a logical model that has subtypes that,
implemented physically, would require 5 tables and would be very complicated
for the developers. The physical model implements it in 1 table with types
and triggers controlling the foreign keys.
I'm not necessarily advocating this approach to subtyping, but it is one of the (only) reasons my logical models differ from physical.
Diana Duncan
-----Original Message-----
From: james ellis [mailto:jellis24_gso_at_yahoo.com]
Sent: Tuesday, August 22, 2000 7:52 PM
To: Multiple recipients of list ORACLE-L
Subject: logical differing from physical
Does anyone have any good reasons why a database's logical model would differ from the physical model? Haven't run across any good business reasons why this should/would happen.
james
-- Author: james ellis INET: jellis24_gso_at_yahoo.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Wed Aug 23 2000 - 09:28:03 CDT
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