In this section, we are going to interact with Linked Data deployed into the Linked Data Web from a live instance of Virtuoso, which uses the URL Rewrite rules from the prior section.
The components used in the example are as follows:
http://demo.openlinksw.com/sparql
http://demo.openlinksw.com/Northwind
http://demo.openlinksw.com/Northwind/Customer/ALFKI#this
http://demo.openlinksw.com/Northwind/Customer/ALFKI
http://demo.openlinksw.com/DAV/JS/isparql/index.html
http://demo.openlinksw.com/Northwind/Customer/ALFKI
to display the HTML rendering of the RDF container document pointing to entity ALFKI.
Click on the link http://demo.openlinksw.com/Northwind/Customer/ALFKI#this
adjacent to the foaf:PrimaryTopic
property to display the ALFKI entity itself.http://demo.openlinksw.com/Northwind/Order/11103#this
.
(For clarity, triples associated with the 'Alfreds Futterkiste
' entity were removed before taking this screenshot, by clicking the 'Remove' link in the 'Cache' group box, to show only the Order details.) Continuing in this way, one can navigate over the Northwind RDF graph, drilling down to uncover more details of selected entities.
We can interact with the same Information Resource and associated RDF using the iSPARQL Query tool as follows:
http://demo.openlinksw.com/isparql
.
You will be presented with a Query By Example (QBE) canvas that includes a default Graph Pattern and a default URI.
Change the URI to the Northwind graph URI, http://demo.openlinksw.com/Northwind
.northwind:Customer
instances.
Click on the 's
' column header to sort the customer list alphabetically.http://demo.openlinksw.com/Northwind/Customer/ALFKI
record, and you will once again be presented with the enhanced hyperlink and its options.
Again click on Get Data Items, to get all the records in the RDF database related to entity http://demo.openlinksw.com/Northwind/Customer/ALFKI
.Back to Deploying Linked Data Guide | Previous: Deploying Linked Data Using Virtuoso | Next: Transparent Content Negotiation