Ummm...from post #26:
CREATE TABLE article_placement (
CONSTRAINT FOREIGN KEY article REFERENCES articles(article).
CONSTRAINT FOREIGN KEY section REFERENCES sections(section).
CONSTRAINT FOREIGN KEY subsection REFERENCES subsections(subsection).
Isn't that what I said? Really? Not quite sure what you are saying that is different.
An optimist sees the glass as half full.
A pessimist sees the glass as half empty.
A realist drinks it no matter how much there is.