Date: Fri, 02 Nov 2007 15:13:00 GMT
David Cressey wrote:
> "paul c" <toledobythesea_at_ooyah.ac> wrote in message
>> 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)