Re: contrasing SPARQL Federation + DM/R2RML vs. SQL federation tools

On 2/13/12 11:19 AM, Juan Sequeda wrote:
> Eric,
>
> In SQL Server, there is a feature called Distributed Query that can 
> join heterogeneous data sources, including joining Oracle data and a 
> text file in a single SQL Server query.
>
> http://msdn.microsoft.com/en-us/library/ms188721.aspx
>
> I'm giving the Linked Data tutorial at semtech. If our tutorials don't 
> overlap, I could help you out with this.

Yes, and via R2RML you can make a Linked Data view over any ODBC/JDBC 
DSNs connected to Oracle, SQL Server, DB2, Sybase, Informix, Ingres, 
MySQL, Firebird, PostgreSQL and anything else . Then subject to your 
tool at hand, leverage locality aware cost-optimization. Basically, this 
is what Virtuoso has always offered (since 1998) on the RDBMS 
virtualization front. R2RML now allows us up the ante by leveraging URI 
abstraction and Linked Data.

Anyway, you'll see my demos which will cover all of this. Thanks to 
R2RML we finally have the ability to showcase a major DBMS technology 
fork at the data access level :-)

Kingsley
>
> Juan Sequeda
> +1-575-SEQ-UEDA
> www.juansequeda.com <http://www.juansequeda.com>
>
>
> On Mon, Feb 13, 2012 at 10:13 AM, Eric Prud'hommeaux <eric@w3.org 
> <mailto:eric@w3.org>> wrote:
>
>     I'm giving a talk at SemTech which I'm lead to believe will cover
>     SPARQL over SQL databases. One of the motivators for the SemWeb is
>     that we get to connect everything to everything, including e.g.
>     sets of SQL DBs. The relational world has some tooling for the
>     latter case, e.g. "Oracle Database Streams" and "SQL Server
>     Integration Services". What do y'all know about them? It could
>     help some audience members if I were able to contrast existing SQL
>     tooling against SPARQL over DB-backed RDF graphs.
>
>     --
>     -ericP
>
>


-- 

Regards,

Kingsley Idehen	
Founder&  CEO
OpenLink Software
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