Oh! These might be interesting. Charles Peirce was Tedd Codd's teacher and clearly had a big influence on his thinking: http://en.wikipedia.org/wiki/Charles_Pe

Oh! These might be interesting. Charles Peirce was Tedd Codd's teacher and clearly had a big influence on his thinking: http://en.wikipedia.org/wiki/Charles_Peirce#Mathematics http://en.wikipedia.org/wiki/Charles_Peirce#Mathematics And, in the beginning there were 2 different teams at IBM trying to implement Ted Codds ideas. The ISBL team stuck faithfully to Codds ideas and the Sequel team kind of bastardized them. But SQL won in the marketplace. Hugh Darwen is still bitter: http://www.dcs.warwick.ac.uk/~hugh/TTM/HAVING-A-Blunderful-Time.html http://www.dcs.warwick.ac.uk/~hugh/TTM/HAVING-A-Blunderful-T...