am  Fri, dem 15.06.2007, um 10:24:26 +0200 mailte Adrian von Bidder folgendes:
> Hi,
> 
> I want to tighten down my db schema as much as possible against accidential 
> corruption.  For this, I'd like to have fields that can only inserted and 
> not later changed (think some sort of "id", account names, etc., which are 
> often not only stored in the database but also in external places so 
> changing is just a definitive DON'T).
> 
> Obviously I can check this with triggers, but it occured me that some kind 
> of "CONSTANT" field attribute would be nice.  Perhaps such a construct 
> already exists?  Or perhaps somebody has come up with a generic way to do 
> this without having to write 30 or 50 small triggers all over the place?

You can use RULE for this:

http://www.postgresql.org/docs/techdocs.7



Andreas
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Andreas Kretschmer
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