This is a memo on how to use Virtuoso, an RDF store.
Checking Registered Graph URIs
Conductor > Linked Data > Graphs > Graphs
Manually Uploading RDF Files
Conductor > Linked Data > Quad Store Upload
Enabling Federated Query
The following article was helpful. The "Account Roles" configuration was required.
Enabling SPARQL 1.1 Federated Query Processing in Virtuoso
Enabling SPARQL 1.1 Federated Query Processing in Virtuoso Why SPARQL 1.1 Federated Query (sometimes referred to by the original name, SPARQL-FED) processing permits Virtuoso to run SPARQL sub-queries (typically written using the SPARQL SERVICE clause) to be run against remote SPARQL endpoints, as described in the standard. What Enabling SPARQL 1.1 Federated Query processing in Virtuoso is just a question of granting a role or two to the SPARQL user. The SPARQL_SELECT_FED role is mandatory. T...
OpenLink Software CommunityI hope this serves as a helpful reference.
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