Re: Love or hate, or? domains with cardinality two
From: Nicola <nvitacolonna_at_gmail.com>
Date: Tue, 17 Nov 2015 21:36:51 +0100
Message-ID: <n2g352$26r9$1_at_adenine.netfront.net>
Date: Tue, 17 Nov 2015 21:36:51 +0100
Message-ID: <n2g352$26r9$1_at_adenine.netfront.net>
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
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