From: Marnen Laibow-Koser <marnen@...>
Date: 2010-02-05T05:10:51+09:00
Subject: Re: Finding duplicate records before creating using FasterCS

John Mcleod wrote:
> 
>> And follow that up with a unique index in the DB.  Validations are 
>> insufficient by themselves.
>> 
> 
> The index is very unique.

Something either is or isn't unique.  There's no "very". :)

> For example,
> 
> YY-XXXXabc
> 
> "YY" = year without century,
> "XXXX" is an incremental integer and "abc" could be a 1,2 or 3 letter 
> combination.
>

I think you missed my point, or I missed a joke.  "Unique index" is a 
technical DB term -- look it up if you're not familiar with the concept.

> John

Best,
-- 
Marnen Laibow-Koser
http://www.marnen.org
marnen@marnen.org
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