[ Business Inteligence ]
http://www.microsoftvirtualacademy.com/#fbid=cT9hsV5Fbqt

http://railscasts.com/episodes/342-migrating-to-postgresql

http://www.batebyte.pr.gov.br/modules/conteudo/conteudo.php?conteudo=1592

http://www.microsoftvirtualacademy.com/#fbid=cT9hsV5Fbqt

http://www.tutorialspoint.com/ruby-on-rails/rails-controller-methods.htm

https://www.nitrous.io/app#/boxes

http://momjian.us/main/writings/pgsql/hw_performance/