Re: Love or hate, or? domains with cardinality two

Op dinsdag 17 november 2015 21:36:54 UTC+1 schreef Nicola:
> On 2015-11-17 19:45:57 +0000, Erwin said:
>
> > Op maandag 16 november 2015 22:09:14 UTC+1 schreef Nicola:
> >> ...
> >>> ???
> >>>
> >>>
> >>>
> >>> (DEPARTMENT NOTMATCHING EMPLOYEE) SUBSET-OF FI
> >>>
> >>> plus a key declaration {dept} on the view EMPLOYEE WHERE mgr
> >>
> >> Somehow I expected that :) What is FI?
> >>
> >> Nicola
> >
> > What I actually should have replied :
> >
> > Well to me it's clearly not "not straightforward" and if you expected
> > it, why claim it is [not straightforward] ?
>
> If I interpret correctly your constraints, you've got them wrong, because
> they allow a department without a manager.
>
> Nicola

Okay so that was too hasty of me.

(DEPARTMENT NOTMATCHING (EMPLOYEE WHERE mgr)) SUBSET-OF FI

addresses it, methinks. Still nowhere near "not straightforward" in my book ... Received on Tue Nov 17 2015 - 23:56:59 CET