Oracle-L: Re: Design question...

From: <Jared.Still_at_radisys.com>
Date: Wed, 17 Apr 2002 14:03:25 -0800
Message-ID: <F001.0044745C.20020417140325@fatcity.com>

Chris,

I'm rather anal about using generated keys, and *I* wouldn't even use them here. ;)

Lookup tables with information that is likely to remain static and have an obvious key should be fine without a generated key. ( States are a good candidate )

Jared

"Grabowy, Chris" <cgrabowy_at_fcg.com>
Sent by: root_at_fatcity.com
04/17/02 10:18 AM
Please respond to ORACLE-L

        To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
        cc: 
        Subject:        Design question...

To simplify my question, if I am creating a STATE table to hold all the states of the US, should I create it like this...

Name                                      Null?    Type
----------------------------------------- --------
----------------------------
STATE_CODE                                NOT NULL CHAR(2)         <-- PK

STATE_DESC                                NOT NULL VARCHAR2(50)

or like this...

Name                                      Null?    Type
----------------------------------------- --------
----------------------------
STATE_ID                                  NOT NULL NUMBER          <-- PK 
STATE_CODE                                NOT NULL CHAR(2)
STATE_DESC                                NOT NULL VARCHAR2(50)

I'm trying to figure out which is more efficient, STATE_CODE or STATE_ID, when doing a PK lookup, dealing with FKs, etc.

Many TIA!!!

Chris
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Author: Grabowy, Chris
INET: cgrabowy_at_fcg.com

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INET: Jared.Still_at_radisys.com

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