LAF, it looks like neither Tim nor I have understood your question.

Hopefully someone else can contribute.

--
Allen Browne - Microsoft MVP. Perth, Western Australia.
Tips for Access users - http://allenbrowne.com/tips.html
Reply to group, rather than allenbrowne at mvps dot org.

"LAF" wrote in message
news [snip]
My original question still stands. Do I need to worry about many to many
relationships among subsets of the 3-field primary key if the 3-filed key
identifies unique records?