Re: Surrogate primary key plus unique constraint vs. natural primary key: data integrity?
From: James K. Lowden <jklowden_at_speakeasy.net>
Date: Thu, 14 Mar 2013 13:08:32 -0400
Message-Id: <20130314130832.7623a0f4.jklowden_at_speakeasy.net>
Date: Thu, 14 Mar 2013 13:08:32 -0400
Message-Id: <20130314130832.7623a0f4.jklowden_at_speakeasy.net>
On Thu, 14 Mar 2013 17:07:37 +0100
Wolfgang Keller <feliphil_at_gmx.net> wrote:
> > I remember when currency mapped 1:1 to country.
>
> It *never* did.
>
> Trivial counter-examples are e.g. all those tiny european nations such
> as Liechtenstein, Andorra, San Marino, Monaco etc.
Ah, right. What was it Roy said about "enterprise of interest"?
Thirty years in the finanical industry will inform certain assumptions about which countries matter and which don't. I guess we never had securities issued in or traded in those countries. CWA: not there, don't exist. ;-)
--jkl Received on Thu Mar 14 2013 - 18:08:32 CET