Kingsley,
Thank you very much for all these responses. Nicolas 2010/5/26 Kingsley Idehen <[email protected]> > Nicolas Figay wrote: > >> Hi Hugh (and Armin) >> >> Thanks a lot for responding and for the useful links, in particular the >> matrix that complements the FAQ. >> >> My question was motivated by some difficulty using RDF views on internal >> databases: >> >> Let's give a precise exemple: >> >> I tried to create a RDF view on the table thalia.demo.cmu, through >> database<rdfview pan. >> >> For column selection, I clicked on primary key selection. >> Then a message , I had the following message: >> >> External data sources:This Virtual Database feature is available only in >> the commercial release of Virtuoso Universal Server. For more information on >> the commercial release of the Virtuoso Universal Server, click on the >> following links to learn more: >> >> I then tried, after going back, the generation by clicking "generate" >> button. >> The message I had is the following: "This version do not support tables >> without primary key, please remove table thalia.demo.cmu from set" >> >> So I was (and I'm still) a little bit perplex, as it is not obvious to me >> if RDF View creation on a database is a part of virtual database functional >> component (which is not a part of open solution) or if there is a limitation >> of open solution (that does not exist with commercial version) when creating >> a RDF view on a table without a primary key. >> >> It was the reason why I was desespately looking for detailed and clear >> differences between open and commercial version, having difficulties to find >> required information to understand the origins of encountered messages. >> >> So more precisely, my questions should be about the encountered issues and >> messages I had: >> >> * is the fact that creation of a RDF view without primary key does >> not work comes from usage of the open version? >> >> > No. You have an outdated VAD package re. Conductor (which hosts the RDF > Views Wizard). > > * is creation of RDF view a fearure of Virtual Database? >> >> > Not exclusively, you can make RDF Views atop Virtuoso hosted RDBMS Data > (which also implies Web Services which can be attached and used as User > Defined Types). > > * or is encountered problems come from the fact thalia database is >> >> an exemple of external datasource? >> >> > No as per earlier comment, a bug in the VAD. > > >> >> knowing that what I would like to do is to understand how a database in >> virtuoso can be accessed through a RDF view, hopping it is a feature of open >> version. >> > > It is. > > Virtuoso is an extremely capable OLTP or Decision Support RDBMS (this part > of Virtuoso is far more sophisticated and mature than the RDF aspect, > ironically). > > Kingsley > >> >> >> Best regards. >> >> Nicolas >> >> >> >> >> >> >> 2010/5/26 Hugh Williams <[email protected] <mailto: >> [email protected]>> >> >> >> Hi Nicolas, >> >> The differences between the commercial and open source products >> are listed in the following feature comparison matrix: >> >> http://virtuoso.openlinksw.com/main/featurematrix/index.htm >> >> In summary the following are commercial features only: >> >> - Virtual Database Engine >> - Replication >> - Clustering and high availability >> - Geo-Spatial Extensions >> >> Best Regards >> Hugh Williams >> Professional Services >> OpenLink Software >> Web: http://www.openlinksw.com >> Support: http://support.openlinksw.com >> Forums: http://boards.openlinksw.com/support >> Twitter: http://twitter.com/OpenLink >> >> On 26 May 2010, at 11:40, Nicolas Figay wrote: >> >> > Hi, >> > >> > investigating functional coverage of virtuoso (as I'm a teacher >> in the are of semantic web and digital collaboration field), I've >> some difficulties to clearly understand what the limitations are >> for open source communitary virtuoso openlink, compared to >> enterprise version. >> > >> > Some are appearing when trying to use the tool, for example >> creation of RDF views on tables of a database, but it is difficult >> to identify quicly what could be investigated for demonstration >> and what we should forget relying only on community edition. >> > >> > Is there a place or a document where differences are listed, as >> restrictions of community edition (version 6.x)? >> > >> > Thanks by advance. >> > >> > Nicolas >> > >> >> >> ------------------------------------------------------------------------------ >> > >> > _______________________________________________ >> > Virtuoso-users mailing list >> > [email protected] >> <mailto:[email protected]> >> >> > https://lists.sourceforge.net/lists/listinfo/virtuoso-users >> >> >> ------------------------------------------------------------------------ >> >> >> ------------------------------------------------------------------------------ >> >> >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> Virtuoso-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/virtuoso-users >> >> > > > -- > > Regards, > > Kingsley Idehen President & CEO OpenLink Software Web: > http://www.openlinksw.com > Weblog: > http://www.openlinksw.com/blog/~kidehen<http://www.openlinksw.com/blog/%7Ekidehen> > Twitter/Identi.ca: kidehen > > > > >
