Re: 3 value logic. Why is SQL so special?
From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Mon, 11 Sep 2006 20:09:36 GMT
Message-ID: <4ojNg.16547$9u.191501_at_ursa-nb00s0.nbnet.nb.ca>
>
> i think the characteristic was scheduled departure time. scheduled
> departure time can be useful for a number of things.
Date: Mon, 11 Sep 2006 20:09:36 GMT
Message-ID: <4ojNg.16547$9u.191501_at_ursa-nb00s0.nbnet.nb.ca>
Anne & Lynn Wheeler wrote:
> "JOG" <jog_at_cs.nott.ac.uk> writes:
>> Paul wrote: >> >>> Scheduled_Departure_Time = 'DD:MM:YYYY 10:15' >>> Actual_Departure_Time = <null> untill we know different, then we put >>> in a value. >>So an aircraft might not take off and yet it has a departure time >>attribute? That makes absolutely no sense at all.
>
> i think the characteristic was scheduled departure time. scheduled
> departure time can be useful for a number of things.
The characteristic was quite explicitly the actual departure time. If you were less interested in self-promotion, you might actually pause long enough to read with comprehension. Received on Mon Sep 11 2006 - 22:09:36 CEST