6.2.10. Conductor Linked Data Administration
From Conductor the "Linked Data" tab allows you to execute/save/load SPARQL queries, to add/edit RDF Mapping, to perform statistics and manage graphs, to import schemas and define namespaces, to generated Linked Data Views and to upload to the Quad Store.
"SPARQL -> Query" offers form form SPARQL query execution:
Figure 6.155. RDF
Also you can save the results in a query or load such:
Figure 6.156. RDF
"SPARQL -> Saved Queries" offers list of saved queries, which can be opened in the "Query" tab in order to be executed:
Figure 6.157. RDF
Shows list of available extractor cartridges. They can be re-ordered by place of appearance, edit or deleted:
Figure 6.158. RDF
You can also add a new extractor cartridge:
Figure 6.159. RDF
Shows list of available meta cartridges. They can be re-ordered by place of appearance, edit or deleted:
Figure 6.160. RDF
You can also add a new meta cartridge:
Figure 6.161. RDF
Shows list of available stylesheets for processing cartridges. From here you can manage these stylesheets by adding new, editing existing ones or deleting them:
Figure 6.162. RDF
Offers tracking cartridges exection. By default is off. When enabled, shows list of sessions per cartridge:
Figure 6.163. RDF
Offers creation of secure endpoints for pre-defiend vitual host:
Figure 6.164. RDF
Offers interface for
DB.DBA.RDF_VOID_STORE(graph, to_graph) . In
the new graph ( field "Publish to") will be saved the VoID
statistics data when generated:
Figure 6.165. RDF
Figure 6.166. RDF
"Graphs" tab shows list of current graphs in the RDF Quad Store. From here day can be renamed or deleted:
Figure 6.167. RDF
Shows list of available schemas IRI-s and offers a new schema IRI to be imported:
Figure 6.168. RDF
Shows list of namespace prefixes and offers a new namespace prefix to be imported:
Figure 6.169. RDF
Manage Sponger rules by adding new ones, deleting, re-ordering, etc.
This tab is available only when the cartridges_dav.vad is installed.
Figure 6.170. RDF
Here you can manage different WebID Protocol ACLs WebID ACL by granting SPARQL Roles such as "SELECT", "UPDATE", "SPONGE":
This tab is available only when the policy__manager_dav.vad is installed.
Figure 6.171. RDF
Virtuoso uses a SPARQL-based Meta Schema Language to provide RDBMS-to-RDF mapping functionality (also described as, Linked Data Views of SQL data). The language is an extension of the SPARQL query language meshed with Virtuoso's SPASQL (SPARQL-inside-SQL) functionality. The language enables you to declaratively map relational database schema tables, columns, rows, and foreign key relationships to Classes, Attributes, Relationships, and Instances (Objects/Entities/Individuals) defined by RDF Schemas or OWL Ontologies. The mapping process uses a special built-in Virtuoso function to generate IRIs / URIs in "Subject" or "Object" position of a SPARQL graph pattern, en route to building a set of SQL compiler rules and optimizations for translating SPARQL queries into SQL on the fly.
Figure 6.172. RDF
Quad Store Upoload
Offers upload to Quad Store from file or Resource URL:
Figure 6.173. RDF
This tab is available only when the pubsubhub_dav.vad is installed.
Offers Virtuoso's implementation of the PubSubHubBub Protocol to handle Linked Data by subscribing to Linked Data resource URIs.
Figure 6.174. Subscriptions (PHSB)
Note: the Hub endpoint should be defined ACL in System Admin -> Security -> Access Control -> PSH-SLL