Re: No exceptions?
From: paul c <toledobythesea_at_oohay.ac>
Date: Thu, 29 Jun 2006 21:56:33 GMT
Message-ID: <l0Yog.109500$IK3.32216_at_pd7tw1no>
Date: Thu, 29 Jun 2006 21:56:33 GMT
Message-ID: <l0Yog.109500$IK3.32216_at_pd7tw1no>
Bob Badour wrote:
> paul c wrote:
>
>> J M Davitt wrote:
...
>>>
>>> It almost seems as though you want to declare an analogue for DUM,
>>> syntax-check some expressions, and add attributes to your relation
>>> with the confidence that your expressions are still correct.
>>>
>>
>> Not exactly how I thought of it, but I think that's fair, after all,
>> one can add attributes, subject to one's external conception, to
>> relation definitions that don't have empty headings, in fact not that
>> the observation is of any use, that seems to be what happens when one
>> defines a relation with one attribute.
> > I suggest an empty candidate key in a relation with any number of > attributes is closer.
p Received on Thu Jun 29 2006 - 23:56:33 CEST