dawn wrote:
> Hugo Kornelis wrote:
>> On Fri, 06 Oct 2006 23:29:29 GMT, paul c wrote:
>>
>>> Hugo Kornelis wrote:
>> (snip)
>>>> Because relational databases supporting NULL *define* it as a marker
>>>> denoting the absence of a value. Dawn actually makes a good point about
>>>> context: in C for instance, NULL has a completely different meaning.
>>>> ...
>>> Since it has a different meaning in C, there is no point bringing C into
>>> play here.
>> Hi Paul,
>>
>> The point I was trying to make is that NULL has different meaning in
>> different context. Using C as example was a bad choice, since it
>> obfuscated what I was trying to convey, rather than clarifying it.
>>
>> The meaning of NULL in the context of SQL is also quite different from
>> the meaning of NULL in Pick (and possibly other MV databases). That's
>> what I wanted to write, and what I should have written in the first
>> place. Much of the discussion between Cimode and Dawn appears (as I read
>> it) to come from Cimode talking aboout SQL NULL and Dawn talking about
>> Pick NULL - but they both think that the other is discussing the same
>> NULL.
>
> Thanks for giving your take on that, Hugo, since I was clearly getting
> nowhere.
What else is new.
You won`t get anywhere as long as you keep comparing apples to oranges,
eg., imagining that Pick has a data model that is comparable to what
Codd had in mind.
p
Received on Mon Oct 09 2006 - 18:54:55 CDT
