On Nov 1, 6:24 pm, paul c <toledobythe..._at_ooyah.ac> wrote:
> Roy Hann wrote:
>
> ...
>
> > Two indentical-looking tuples can mean entirely different things. I can
> > think of any number of meanings for {Roy, 47}. Maybe it's my name and age.
> > Or my name and the number of illegitimate children I have. Or maybe it's my
> > father's name and his house number. Who knows, until I tell you?
>
> > Roy
>
> I'm still looking for an example of a predicate that uses RVA's where an
> empty RVA in a tuple makes sense.
I suspect that makes sense to me might not to you ;-) but I'll toss
out an optional list of keywords in a predicate as a possible empty
RVA in a tuple. Another example is OtherLastNames, FormerLastNames or
AliasLastNames. One row in the tuple might include only a "maiden
name" for a person, another might have two other last names used by
this person (other than the value of LastName in this row) and a third
might be the empty set. HTH --dawn
Received on Fri Nov 02 2007 - 14:20:44 CDT
