Re: foreign key constraint versus referential integrity constraint

From: Bob Badour <>
Date: Mon, 26 Oct 2009 10:26:42 -0300
Message-ID: <4ae5a395$0$23778$> wrote:

> On Oct 25, 7:44 am, Bob Badour <> wrote:

>> wrote:
>>>On Oct 24, 8:56 pm, Bob Badour <> wrote:
>>>>What reason would one have to define an equality comparison to compare
>>>>employee ids with department ids or with names? Or charge with current
>>>>or potential? Or age with price?
>>>shoot your age and you are worth your weight in gold.
>>My age in what measure? Years? Integral or rational? If integral,
>>cardinal or ordinal? According to what calendar?

> I was just (humorously seriously) giving examples of such peculiar
> comparisons that I'd say have reasons.

But surely you understand that's what type casts are for. Right?

> Otherwise I agree with you.
> Certainly the corresponding expressions depend on
> the variable and function predicates.
> philip
Received on Mon Oct 26 2009 - 14:26:42 CET

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