Re: O'Reilly interview with Date

Marshall Spight wrote:

>
> I am fairly convinced that you will run into some severe bad
> properties by changing the definition of equality. However,
> I don't see anything that would argue against declaring a
> foreign non-equality relationship. Why not simply say you have
> a thing similar to a FK relationship, but with the operation
> being "within interval" instead of "equal to?"
>

This is the struggle I am having now, trying to sort out if we are dealing with things that can be treated in practice as similar, or if there are valid definitions to be made that would guide the understanding of those similarities.

-- 
Kenneth Downs
Secure Data Software, Inc.
(Ken)nneth_at_(Sec)ure(Dat)a(.com)