Re: Why relational division is so uncommon?

paul c <toledobythesea_at_oohay.ac> wrote in news:RqcYh.132205$DE1.59908_at_pd7urf2no:

> V.J. Kumar wrote:

>> Then there is no way to determine whether or not it was paid and your
>> question cannot be answered in principle !  Of course, you can use
>> some other attribute name to reflect the invoice status,  like
>> 'status' for example. 
>> 
>> vj
>> 
>> 

Whatever it is, you can easily derive 'paid' from that 'whatever' and just go from there as if you had the 'paid' atttribute. I am not sure what else I can add to that ...

vj  

> p
>
Received on Fri Apr 27 2007 - 05:12:14 CEST