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Re: [ontolog-forum] ONTOLOG community event planning and scheduling sess

To: "[ontolog-forum] " <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Michael Brunnbauer <brunni@xxxxxxxxxxxx>
Date: Fri, 13 Sep 2013 16:37:57 +0200
Message-id: <20130913143757.GA31191@xxxxxxxxxxxx>

Hello Kingsley,    (01)

On Fri, Sep 13, 2013 at 10:07:02AM -0400, Kingsley Idehen wrote:
> >Suppose you have an App with user registration. If you store the user data
> >in a triple store, deleting a user with SPARQL becomes difficult.
> That doesn't apply to every triplestore.    (02)

It does because it is a consequence of the triple model.    (03)

> Virtuoso 
> has to factor in deltas such that it doesn't perform wholesale named 
> graph deletions etc.    (04)

Oh yes, deltas. How easy compared to "delete from table where key='...'".    (05)

> We are a full blown ACID DBMS. See our benchmark reports. These simply 
> aren't new issues since we have a hybrid DBMS.    (06)

So I can start a transaction with SPARQL (how do I do that ?), update some
data with SPARQL, query the updated data with SPARQL and the others do not
see the modified data until I commit the transaction ?    (07)

> >I don't know what that really means. Can I modify data with SPARQL *and* 
> >SQL
> >in your DBMS ? If yes, how does that work ?
> Of course you can    (08)

I can do a SPARQL UPDATE and SQL DELETE on the *same* data ? How is this data
stored ? What is the underlying data model ? What happens to the SQL 
"table row" if I delete one "triple" from it with SPARQL ?    (09)

Regards,    (010)

Michael Brunnbauer    (011)

++  Michael Brunnbauer
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