Mainframe, MVS and zOS Discussion

Hi,

The document attached in the post A Relational Model of Data for Large Shared Data Banks. can be found online at https://www.seas.upenn.edu/~zives/03f/cis550/codd.pdf too.

Did you notice the June 1970 date on the article? There are many relational data bases being used in production around the world at all sorts of companies these days.

Yes Robert I noticed that and this is what is important about this document, as it talks about the initial era of relational database development.