[om-list] Functional dependency of binary relations

[Luke Call]

This is such interesting stuff. However, I feel like winnie the pooh, a 
bear of "very little brain." I'm hoping I could digest it all given 
enough time.

Mark Butler wrote:

> Tom wrote:
>>     Do you mean that a single valued attribute can vary in time but not in
>> space?  
> 
> Single valued has two different meanings - one that there is no functional
> dependency at all, an idealization that does not exist for relationships
> between physical objects, or two that there is only one value for any given
> set of arguments.  What I meant to say is that the simplest possible real
> world relations - relations that are single valued in the first sense in the
> snapshot picture of things automatically become unavoidably functionally
> dependent on time.  
> 
> ....