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system catalog constraints question

From: "Gevik Babakhani" <pgdev(at)xs4all(dot)nl>
To: <pgsql-hackers(at)postgresql(dot)org>
Subject: system catalog constraints question
Date: 2008-01-28 16:07:09
Message-ID: 000f01c861c7$d65e7580$0a01a8c0@gevmus (view raw or flat)
Thread:
Lists: pgsql-hackers
Hi,

Is there a way to query the column constraints between the tables of system
catalog.
For example pg_attribute.atttypid---->pg_type.oid. This is described in the 
docs of course , but does the system use something like pg_constaint 
or the system catalog constraints are enforced only in the code?

Regards,
Gevik.



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