Looks like it got broken up into smaller mini-courses available here: https://lagunita.stanford.edu/courses/DB/2014/SelfPaced/abou...

Main page: https://cs.stanford.edu/people/widom/DB-mooc.html

Yes there was a couple on Coursera but they scrapped it for God knows what reason. https://www.coursera.org/instructor/~1196954