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Re: Minutes of the 2010-01-18 telcon for the RDF2RDF WG

From: Ivan Herman <ivan@w3.org>
Date: Wed, 19 Jan 2011 06:37:35 +0100
Cc: Juan Sequeda <juanfederico@gmail.com>, RDB2RDF WG <public-rdb2rdf-wg@w3.org>
Message-Id: <CBDBE904-14FA-4C19-AC2B-DFEBAADDE619@w3.org>
To: Alexandre Bertails <bertails@w3.org>

On Jan 18, 2011, at 19:05 , Alexandre Bertails wrote:
[snip]
> 
> Juan, in order to help you with your action, I would like you to
> considerer the following:
> 
> [[
> CREATE TABLE Debts (
> Name varchar(50),
> Amount Integer
> );
> INSERT INTO Debts (Name, Amount) VALUES("juan", 50);
> INSERT INTO Debts (Name, Amount) VALUES("juan", 50);
> ]]
> 
> Using this very simple RDB [1] example, can you go through all the
> phases that lead to the RDF where I owe you 100?


Alex, for my understanding: what I would expect to see in RDF are two pairs of identical triples with different subjects. How would a direct produce anything whereby I owe Juan 100? I will owe 50 twice, but the fact that this is a hundred is a step that the RDF per se cannot say...

Ivan





> 
> Alexandre.
> 
> [1] http://www.w3.org/TR/2010/WD-rdb-direct-mapping-20101118/#Rel
> 
> 


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Received on Wednesday, 19 January 2011 05:37:58 GMT

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