Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Mailing Lists -> Oracle-L -> RE: FK Constraints

RE: FK Constraints

From: <sinardyxing_at_bcsis.com>
Date: Mon, 19 Mar 2001 17:51:36 -0800
Message-ID: <F001.002D11A6.20010319171521@fatcity.com>

Hi,

I'm a beginner too, but without a table FK (relation) how you make a join statements ? Do you normalize your tables ?

The relation model is concerned with logical maters only, not physical matters. It addresses three aspects of data, data stucture (object) data integrity, and data manipulation.
The Object (Tables),
Integrity portion has to do with PK and FK Data manipulation (SELECT, JOIN etc)

In addition I think with the Normalized database you will have smaller database and easy to maintain (base on object).

-----Original Message-----
akhil
Sent: Tuesday, 20 March 2001 2:05 AM
To: Multiple recipients of list ORACLE-L

Hi all:

We have a situation where are no relationships are defined at the database level. i.e no foreign keys constraints have established at the Database. The application is still at the Development Stage.

Everything is controlled at the application level.

I as the DBA appose this design for Data security and also cannot reverse engineer from the tables into Designer.

Can you please share you pros / Cons.

Thanks



Do You Yahoo!?
Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: ramani akhil
  INET: srinirmala_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). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: INET: sinardyxing_at_bcsis.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 Mon Mar 19 2001 - 19:51:36 CST

Original text of this message

HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US