Re: Custom Data Type Question

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От Andrew Dunstan
Тема Re: Custom Data Type Question
Дата
Msg-id 45630D52.5000301@dunslane.net
обсуждение исходный текст
Ответ на Re: Custom Data Type Question  ("Simon Riggs" <simon@2ndquadrant.com>)
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Simon Riggs wrote:
> On Tue, 2006-11-21 at 02:51 +0000, Tom Dunstan wrote:
>
> In the long run, as currently envisaged, enums don't do all that I would
> like. 

In a sense they do more than you want. They will provide the ability to 
set values much faster than anything using an FK constraint, I expect, 
and without having to use any explicit constraint.

> I see the need to performance tune Referential Integrity more
> directly.
>
>   

Sure. Go for it. As far as enums go, the only cases I can think of where 
that will have any application are:
. you don't use enums because you want strictly vanilla SQL, or
. you don't use enums because you want to be able to alter the set of 
allowed values arbitrarily.

That still leaves lots of applications (e.g. those I work on in my day 
job) that will benefit from enums.

cheers

andrew




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