The document introduces the concept of linked data and the Web as a huge database. It provides examples of querying linked open data using SPARQL from datasets like DBpedia, Freebase, and information about Tim Berners-Lee. Links are included for more information on linked data, tutorials, mailing lists, and contacting the author.

1. $ Web == one huge DB 1st episode of the series:Linked Data for Hacker Joe http://linkeddata.deri.ie/

23. http://lookup.dbpedia.org/

24. http://lookup.dbpedia.org/

25. http://dbpedia.org/resource/Darth_Vader

26. SELECT ?typedlink ?value { <http://dbpedia.org/resource/Darth_Vader> ?typedlink ?value . FILTER isURI(?value) } http://dbpedia.org/sparql

27. http://dbpedia.org/sparql

28. http://rdf.freebase.com/ns/guid.9202a8c04000641f8000000000068ba0

29. http://rdf.freebase.com/ns/guid.9202a8c04000641f8000000000068ba0

30. FOAF

31. http://www.w3.org/People/Berners-Lee/card#i

32. http://www.w3.org/People/Berners-Lee/card#i

33. PREFIX foaf: <http://xmlns.com/foaf/0.1/> SELECT ?acquaintance FROM <http://www.w3.org/People/Berners-Lee/card> WHERE { <http://www.w3.org/People/Berners-Lee/card#i> foaf:knows ?acquaintance . FILTER isURI(?acquaintance) } http://sparql.org/sparql.html

34. http://sparql.org/sparql.html

35. http://sparql.org/sparql.html

37. Brain Food … http://www.devx.com/semantic/Article/40869 http://www.jenitennison.com/blog/node/115 http://www.snee.com/bobdc.blog/2009/07/modeling-your-data-with-dbpedi.html http://www.cambridgesemantics.com/2008/09/sparql-by-example/ http://linkeddata.org/guides-and-tutorials

38. For more information and to engage … visit: http://linkeddata.deri.ie subscribe to the mailing list: http://lists.deri.org/mailman/listinfo/linkeddata follow us on Twitter: http://twitter.com/lidrc

39. For feedback and in case you have questions … drop me a line: michael.hausenblas@deri.org connect on Skype: mhausenblas or let’s meet on IRC: mhausenblas on irc://irc.freenode.net/swig