Twinkle: A SPARQL Query Tool

11,844 views
11,467 views

Published on

Introduction to Twinkle presented at an Oxon Swig meeting in March 2008

Published in: Technology, Education
6 Comments
2 Likes
Statistics
Notes
No Downloads
Views
Total views
11,844
On SlideShare
0
From Embeds
0
Number of Embeds
107
Actions
Shares
0
Downloads
111
Comments
6
Likes
2
Embeds 0
No embeds

No notes for slide

Twinkle: A SPARQL Query Tool

  1. 1. Twinkle: A SPARQL Query Tool Leigh Dodds, Oxford SWIG, March 2008 Photo Credit: Glen Bowman
  2. 2. What Is It? A GUI for writing and running SPARQL queries
  3. 4. Data Sources Local Files Remote Files Jena Databases Any combination of these
  4. 5. SPARQL Endpoints Complete SPARQL Client Useful pre-configured sources, e.g. DBPedia
  5. 6. But Wait, There’s More RDFS and OWL Inferencing Jena Rules Engine And any combination
  6. 8. Demonstration (Where It All Goes Wrong)
  7. 9. The Secret Sauce ARQ SPARQL query engine The Jena Assembler API
  8. 10. Jena Assembler API Declaratively describe how to build a Jena Model URIs, Databases Add default content Apply schemas, reasoning
  9. 11. <ul><li>:periodicTable a ja:MemoryModel </li></ul><ul><li>; ja:content [ </li></ul><ul><li>ja:externalContent </li></ul><ul><li><http://www.daml.org/2003/01/periodictable/PeriodicTable.owl> </li></ul><ul><li>] </li></ul><ul><li>; rdfs:label &quot;Periodic Table&quot; </li></ul><ul><li>. </li></ul>Config Example
  10. 12. <ul><li>:nlm ja:modelName &quot;nlm-data&quot; </li></ul><ul><li>; ja:connection :nlm-connection </li></ul><ul><li>; rdfs:label &quot;NLM Data&quot; </li></ul><ul><li>. </li></ul><ul><li>:nlm-connection </li></ul><ul><li>ja:dbURL <jdbc:mysql://127.0.0.1:3306/facet> </li></ul><ul><li>; ja:dbClass &quot;com.mysql.jdbc.Driver&quot; </li></ul><ul><li>; ja:dbType &quot;MySQL&quot; </li></ul><ul><li>; ja:dbUser &quot;facet&quot; </li></ul><ul><li>; ja:dbPassword “*********&quot; </li></ul>Config Example (2)
  11. 13. <ul><li><http://dbpedia.org/sparql> a sources:Endpoint </li></ul><ul><li>; sources:defaultGraph &quot;http://dbpedia.org&quot; </li></ul><ul><li>; rdfs:label &quot;DBpedia.org&quot;. </li></ul><ul><li><http://www.rdfabout.com/sparql> a sources:Endpoint </li></ul><ul><li>; rdfs:label &quot;GovTrack.us&quot;. </li></ul>Config Example (3)
  12. 14. Where It All Goes etcconfig.n3 Describe (and label) models Prefix Mappings
  13. 15. Prefix Mappings Quickly add PREFIX statement to query Pre configured vocabularies Add your own…
  14. 16. Prefix Mappings :foaf a ja:PrefixMapping ; rdfs:label &quot;FOAF&quot; ; ja:prefix &quot;foaf&quot; ; ja:namespace &quot;http://xmlns.com/foaf/0.1/&quot; .
  15. 17. Demonstration (2)
  16. 18. … And Yet More ARQ Function & Property Library ARQ Extensions (e.g. COUNT, GROUP BY)
  17. 19. Future Plans Documentation! SPARQL Endpoint Access Control Model Caching Syntax Highlighting More Eye Candy Move to Google Code (Your Feature Here)
  18. 20. Questions? Twinkle Homepage Annotated Screenshots http://www.slideshare.net/ldodds/twinkle-a-sparql-query-tool/

×