ERD diagrams, pt. I: many-to-many relationships

Author: Alexey Makhotkin squadette@gmail.com . &#xA; I started writing a long post on how to design correct ERD diagrams based on the approach from the “Database Design Book” , but the text got a bit unwieldy. So I’m going to regroup and focus on one part: many-to-many relationships (“M:N links” in book terms). &#xA; Suppose that you need to build an ERD diagram based on some sort of real-world or…