Designing our data tables

It's always a good practice to design with paper and a pencil before starting to program. If you do, you'll find that your code is much better because you'll contemplate scenarios that you may not see if you start programming right away, and, instead of hacking your way around what you have already programmed, you'll be able to design solutions beforehand. It's an easy investment that very often pays off, so that's what we will do in this section, we will design our data.