Re: boolean datatype ... wtf?
From: paul c <toledobythesea_at_oohay.ac>
Date: Wed, 29 Sep 2010 13:46:04 GMT
Message-ID: <wqHoo.1065$u9.538_at_edtnps82>
Date: Wed, 29 Sep 2010 13:46:04 GMT
Message-ID: <wqHoo.1065$u9.538_at_edtnps82>
On 29/09/2010 4:51 AM, Paul Mansour wrote:
...
>
> What is the problem with a Boolean data type?
> .
> It is fundamental - so fundamental that in TTM it is the only
> required scalar data type: “We require that at least one built-in
> scalar type be supported : Namely, type “Boolean” (BOOLEAN in Tutorial
> D”).
>
> Date and Darwen go on to give the obvious reasons for this.
>
> The fact that DEE and DUM may be interpreted as TRUE and FALSE is not
> relevant. The result of A=B or A>B is not a relation.
Aren't A=B and A>B relations? Received on Wed Sep 29 2010 - 15:46:04 CEST