- From: Ivan Herman <ivan@w3.org>
- Date: Wed, 19 Jan 2011 06:37:35 +0100
- To: Alexandre Bertails <bertails@w3.org>
- Cc: Juan Sequeda <juanfederico@gmail.com>, RDB2RDF WG <public-rdb2rdf-wg@w3.org>
Received on Wednesday, 19 January 2011 05:37:58 UTC
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 > > ---- Ivan Herman, W3C Semantic Web Activity Lead Home: http://www.w3.org/People/Ivan/ mobile: +31-641044153 PGP Key: http://www.ivan-herman.net/pgpkey.html FOAF: http://www.ivan-herman.net/foaf.rdf
Received on Wednesday, 19 January 2011 05:37:58 UTC