Re: The Fact of relational algebra (was Re: Clean Object Class Design -- What is it?)

> But the n-ary relations used in database design are an obvious
> generalisation of the above. What would you call them?
>

Actually, the definition of "relation" given earlier, should have referred to "a set of ordered n-tuples"
instead of a "set of ordered pairs".

A change in notation between the mathematics of relations and the relational model is that columns are named,
while the individual parts of an n-tuple are positional.

--
Regards,
    David Cressey
    www.dcressey.com