Re: compound propositions
Date: Sat, 27 Mar 2010 15:21:34 GMT
Message-ID: <2oprn.364$Z6.28_at_edtnps82>
Mr. Scott wrote:
> "paul c" <toledobythesea_at_oohay.ac> wrote in message
> news:XEvnn.71100$PH1.31420_at_edtnps82...
...
>> One reason is that I still don't know how Codd's Information Principle
>> applies to compound propositions, eg., " 'C1' is a customer OR 'C1' is a
>> client". I can see that humans might imagine themselves capable of
>> interpreting a relation (or to put it redundantly a relation value) as
>> implitly mentioning that 'OR' connective (and dba's might so instruct
>> their users). But where is it recorded? (or 'manifested'?) Eg., is it
>> 'recorded' only in the ephemeral form of an expectation that a program's
>> execution can't manifest given a single relation to operate on?
>>
>
> I'm confused. Are you trying to find a way to avoid using nulls? ...