From: | Machiel Richards <machielr(at)rdc(dot)co(dot)za> |
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To: | "pgsql-novice(at)postgresql(dot)org" <pgsql-novice(at)postgresql(dot)org> |
Subject: | Reasons for creating linking tables? |
Date: | 2010-11-15 12:11:12 |
Message-ID: | 1289823072.2729.73.camel@machielr-laptop |
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Lists: | pgsql-novice |
Good day all
I would like to get the point of view from you guys out there who
has had a lot of database experience.
While busy looking into a database that have a lot of issues I have
found the following scenario :
- Let's call the 3 tables in question tables a,b & c.
- Currently table a has got a FK referencing table b
- table b contains only 1 field called id which is the PK and
also a FK referencing table c
- table c is once again a table with a couple of fields.
My question on this is, why create the linking table?
Surely the linking table can be removed and the data referenced
directly between tables a & c?
Is there a specific reason why this would need to be done?
Regards
Machiel
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