Author: Alexey Makhotkin squadette@gmail.com. In the first part we’ve designed a logical ERD diagram based on the structured logical model. We built the structured logical model from the free-text business requirements. What if we need to draw a physical ERD diagram for the same task? It turns out that we’ve already done maybe 80% of the work, and we can reuse the structured logical model verbatim. We’ll just use a different graphical notation.
