Re: Scalars & atomic values & variables

Bob Badour <bbadour_at_golden.net> schrieb:
> "Lauri Pietarinen" <lauri.pietarinen_at_atbusiness.com> wrote in message
>> If we think of scalars in terms of what can be seen by relational
>> operators (union, projection, cartesian product, etc...) it would
>> seem to me that defining scalars as values that cannot be "cracked
>> open" with these operators would pretty well do it for me.
>
> That strikes me as entirely arbitrary. One can crack open a string using an
> operation that returns a relation of position/character tuples. I guess that
> makes a string non-scalar.

I think your hypothetical operation is not one of the "relational operators" to which Lauri refers, i.e. those whose domain is relations. Received on Fri Jan 09 2004 - 19:57:57 CET