Hi Lorena,
The Virtuoso Virtual Database engine required for such virtualisation of
relational data is a commercial product feature only and not part of open
source:
http://virtuoso.openlinksw.com/features-comparison-matrix/
Best Regards
Hugh Williams
Professional Services
OpenLink Software, Inc. // http://www.openlinksw.com/
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Universal Data Access, Integration, and Management Technology Providers
On 6 Dec 2013, at 17:38, lorena <lore...@gmail.com> wrote:
> Hi
>
> It seems that it is not possible to use a R2RML mapping file to convert data
> from an external relational database (PostgreSQL for example) in Virtuoso
> Open Source edition
>
> I this correct?
>
> Is it possible to "workaround" this?
>
> regards
> Lorena
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