Re: One-To-One Relationships

paul c wrote:

>rpost wrote:
>...
>> There is a subtle difference. A "reference" (or "pointer") is something
>> that refers; an entity, in the context of ER modelling (or "object", in
>> the context that terms like "reference" and "pointer" are used),
>> is something that can be referred to.
>>
>> Other than that, I agree.
>>
>> It doesn't answer the question, though: what does it buy them?
>
>Maybe you want an answer to a different question, eg., "what do you wish
>it to buy them?".

But that's what I started out with: the ability for statements to be about entities, not just about their observable properties.

-- 
Reinier