Trying to get pyomnigraph working with Virtuoso

Virtuoso Universal Server RDF Data Management
2

The post Virtuoso user RDF Graph Level access to RDF Quad Store details the reason.

  • SPARQL endpoint configuration? Are there additional Virtuoso.ini settings needed for SPARQL UPDATE operations?

The default ~/sparql is readonly (SPARQL_SELECT role) for security reasons. To make it read/write then the SPARQL_UPDATE role needs to be granted, provide you aware of the security implications especially if it is publicly accessible.

  • Alternative endpoints? Should I use /sparql-auth or /sparql-graph-crud instead of /sparql?

Yes, the ~/sparal-auth should be used for authenticated access to the database, as a user with the appropriate SPARQL_UPDATE role assigned to allow such operations to be performed.

  • Docker-specific issues? Any known problems with SPARQL_UPDATE in containerized Virtuoso?

No, it behaves as Virtuoso would in an on-premise standalone or cloud deployment.