What Dr. Edgar Codd said about the relational model in 1981

Dr. Edgar Codd introduced the relational model in his 1970 paper “A Relational Model of Data for Large Shared Data Banks”—there was an earlier 1969 version but let’s not digress. The 1970 paper was reprinted in the 25th anniversary edition of the NoCOUG Journal. It’s terribly mathematical and consequently not very comprehensible to mere mortals. But his 1981 ACM Turing Award lecture is a study in contrast so I recommend it highly. You can read it in the 30th anniversary edition of the NoCOUG Journal.(read more)