...thanks for reminding me of my advanced relational db exam I just had today! But in all seriousness, the fundamentals of how relational DB's work and physica

...thanks for reminding me of my advanced relational db exam I just had today! But in all seriousness, the fundamentals of how relational DB's work and physically execute queries should be at least in the back of the mind of any engineer who writes SQL for a living. Great article!