Re: atomic
From: paul c <toledobythesea_at_ooyah.ac>
Date: Fri, 02 Nov 2007 15:13:00 GMT
Message-ID: <08HWi.167005$Da.137917_at_pd7urf1no>
>
> The set of toppings on a pizza.
>
>
Date: Fri, 02 Nov 2007 15:13:00 GMT
Message-ID: <08HWi.167005$Da.137917_at_pd7urf1no>
David Cressey wrote:
> "paul c" <toledobythesea_at_ooyah.ac> wrote in message
> news:DetWi.165783$Da.130771_at_pd7urf1no...
>> Bob Badour wrote: >>> paul c wrote: >> ... >>>> I'm wondering are there applications where RVA values that are "empty" >>>> make sense or are such values just a curious by-product of RVA's? >>> Yes, of course, there are lots of such applications (assuming RVAs make >>> sense.) >>> ... >> For example?
>
> The set of toppings on a pizza.
>
>
If I may dodge the ordering question for now and continue with my casual
graphics, how could a relation like the following be useful?
(assuming one pizza per order and ignoring pizza size)
PizzasOrdered:
Order {Toppings}
_____ __________
1 {Tomato, Sausage, Cheese}
1 {}
Received on Fri Nov 02 2007 - 16:13:00 CET