Re: How to represent category, subcategory, product

JOG wrote:
...
> * kermit is a member of the set of frogs and of the set of amphibians.
...
> By normalizing to 3NF it becomes clear that you are actually dealing
> with two distinct predicate structures:
...
> * All frogs are amphibians.

...

I like your point that making up tables without first forming the predicates is jumping the gun but in this example I don't see how the frogs are necessarily a subset of the amphibians (ignoring outside information).

p Received on Thu Nov 23 2006 - 07:28:11 CST