Adam Sampson's relational bookmarkshttps://bookmarks.offog.org/ats/relationalAdam Sampson2015-06-28T11:25:25ZGay marriage: the database engineering perspective @ Things Of Interesthttps://bookmarks.offog.org/edit?url=http%3A%2F%2Fqntm.org%2Fgay2015-06-28T11:25:25Z"Because marriage is not just an irreflexive binary relation; it's a transitive, irreflexive, binary relation." A nice worked example of database design.