I think you should learn the relational model (not SQL). Understand the problems it was trying to solve and how the relational model solves them. Then figure

I think you should learn the relational model (not SQL). Understand the problems it was trying to solve and how the relational model solves them. Then figure out how that applies to your app. Database in Depth was helpful for me http://www.amazon.com/Database-Depth-Relational-Theory-Practitioners/dp/0596100124 http://www.amazon.com/Database-Depth-Relational-Theory-Pract... .