Re: One Ring to Bind Them

"Anthony W. Youngman" <wol_at_thewolery.demon.co.uk> wrote in message news:<j$hPkhMcm30AFwso_at_thewolery.demon.co.uk>...

<snip>

> Actually, I've just reread what you wrote. Do you mean "constraint" as
> in a relational constraint - foreign-key type stuff; or as a general
> term for enforcing integrity. I was thinking the latter, hence my
> reference to triggers, but I suspect you might be meaning the former. If
> you did mean the former, Pick doesn't have them because it achieves the
> same effect as a side-effect of its implementation. So the fact that
> relational needs them is de-facto a hindrance relative to Pick.
>

Additionally, with regards to your last point - how does Pick have "foreign-key type stuff" as a "side-effect of its implementation" ? Is this down to its multi-valuedness ? What happens if you use Pick in faux-relational mode - do you just lose this kind of constraint ?

> Cheers,
> Wol

• Tony