>"Normalize your data" >"You don't need to write SQL in uppercase" >"What's an index ?" section From reading this, it's clear that the author never sat down

>"Normalize your data" >"You don't need to write SQL in uppercase" >"What's an index ?" section From reading this, it's clear that the author never sat down and learned to use databases from the ground up. The author started using them and learned as he went, so his "tips" include things you'll be told in the first hour of any course. This doesn't hold any value for someone who's been using databases for almost any length of time.