I've always thought that 5NF is a bit overkill. Didn't find one decent example that would make me say "oh, so that's why they do it".
I must say though, after the Database Systems course at DTU, when I come up with a DB design it's almost always in 4NF to start with :). Man, I hated this course.
I must say though, after the Database Systems course at DTU, when I come up with a DB design it's almost always in 4NF to start with :). Man, I hated this course.