Re: [uos-convene] KBR vs SQL

[Bill Andersen <andersen@xxxxxxxxxxxxxxxxx>]

One minor quibble, Leo...    (01)

> What "larger ontology-based systems"?  Which ones do you have in  
> mind?  What precisely do these systems do?  I'm getting the feeling  
> that you're talking about something very comprehensive like Cyc...
> 
> LEO: No, what he is talking about is a semantic level that relational
> databases don't currently have.     (02)

You subtly switched from talking about the E-R model to talking about 
relational databases.  I believe, for example, that Oracle's PL-SQL is 
computationally complete, making it strictly as powerful as FOL.  Thus, 
the relational *database* could be as powerful a *system* as one based 
explicitly on logic, while E-R cannot be as powerul a *logic* as even 
RDFS.  Of course, that's not a practical comparison, but we should be 
careful in our wording (goes for me too ... in spades).    (03)

        .bill
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