Read this.

This guy makes so much sense it hurts. Warning: techy. Nothing to see here if you don't know what a DBA is. Mark Rendle's Blog

PS I used to work with him. He's an arrogant, self-satisfied cunt with the biggest heart in the world (although he'll deny it) but prodigiously intelligent. I might even forgive him one day for smoking Gerald, my doobie plant, while I was in Malta.