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[Michael Kay <mike@saxonica.com>]

On 27 Sep 2016, at 02:18, Jim Melton <jim.melton@oracle.com> wrote:

Mike,

I agree, except the standard to which you meant to refer was called RMDM (Reference Model for Data Management).  IRDS was Information Resource Dictionary System.

Jim

IRDS certainly had this model (the editor, David Gradwell, was a close colleague of mine at ICL). I've never come across RMDM. It's entirely possible that the concept appeared in both and it would be interesting though challenging to try and find out which influenced the other.

Mike