Hi Hugh,
Thank you for your reply.
We loaded data to an empty Virtuoso database once using the Virtuoso
function bulk loading function rdf_loader_run() [1]
>could someone else be inserting data into the server ?
No, nobody else can insert data.
Going back to the sponger service. We didn't install rdf_mappers_vad, but
we enabled the sponging functionality for our SPARQL endpoint
http://linkedstat.spaziodati.eu/sparql, as it is described here [2]. We
used this functionality to execute queries that fetch data from DBpedia
(following owl:sameAs links).
What I also noticed is that the auto generated graphs are the URIs of the
things that we have in our database, for example:
- statistical concept
http://linkedstat.spaziodati.eu/concept/1.8/SEP_POP/TIPO_COPPIA
- statistical observation
http://linkedstat.spaziodati.eu/dataset/32_38/IT/1/REDD_QUINTO/10/9/TOTAL/99/99/9/9/99/1/1/A/2003
- statistical dataset http://linkedstat.spaziodati.eu/dataset/24_55
Can it be that Virtuoso "cached" the results of some queries into graphs?
[1]
http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtBulkRDFLoader
[2] http://linkedstat.spaziodati.eu/sparql?help=enable_sponge
Regards,
Tatiana
2014-06-17 13:35 GMT+02:00 Hugh Williams <hwilli...@openlinksw.com>:
> Hi Tatiana,
>
> These look like graphs that might have been sponged by the Virtuoso
> sponger service [1] , do you have the rdf_mappers_vad package installed on
> the Virtuoso installation ?
> Best Regards
> Hugh Williams
> Professional Services
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>
> [1] http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtSponger
>
> On 17 Jun 2014, at 11:15, Tatiana Tarasova <taras...@spaziodati.eu> wrote:
>
> Hello,
>
> We are using Virtuoso OSE (06.01.3127) to store static RDF. We defined
> several custom graphs. After a few months of running Virtuoso we noticed
> that several new graphs appeared in the database. Here is the list of the
> graphs
>
>
> http://linkedstat.spaziodati.eu/sparql?default-graph-uri=&query=SELECT+DISTINCT+%3Fg+WHERE+%7BGRAPH+%3Fg%7B+%3FURI+a+%3FObjectType%7D+%7D
>
> Why they were generated by Virtuoso?
> How can we configure Virtuoso not to generate these graphs?
>
> Kind Regards,
> Tatiana
>
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