Re: Negative Numbers in "Identity" or" Autonumber" fields
Date: Wed, 21 Mar 2007 15:28:36 GMT
Message-ID: <EacMh.13150$PV3.136146_at_ursa-nb00s0.nbnet.nb.ca>
Marshall wrote:
> On Mar 21, 4:00 am, Bob Badour <bbad..._at_pei.sympatico.ca> wrote:
>
>>Marshall wrote:
>>
>>>On Mar 20, 10:31 am, "JOG" <j..._at_cs.nott.ac.uk> wrote:
>>
>>>>[...] Nothing in a
>>>>proposition should ever be hidden from the user. Propositions come
>>>
>>>>from outside of the logical layer after all. If an attribute is an
>>>
>>>>identifier then it clearly impacts on identifying items in the real
>>>>world.
>>
>>>I buy the "nothing should be hidden" argument, but I can't
>>>decide if a domain that only supports equality is hiding
>>>anything or not.
>>
>>It has to have at least one possible representation.
> > Can you elaborate? Why does it need at least one? > What breaks if it doesn't?
How does one express any literal without at least one possible representation? Received on Wed Mar 21 2007 - 16:28:36 CET