Planning a new database can be a daunting task. It's easy to get overwhelmed by it, so here we present some planning ideas. It's also easy to charge headlong at the task as well, thinking that the parts you know are all the things you'll ever need to consider.
You are ready. Don't wait to be told what to do. If you haven't been told what the requirements are, then write down what you think they are, clearly labeling them as "Assumptions" rather than "Requirements"—we mustn't confuse the two things.
Iterate until you get some agreement, and then build a prototype.
Write a document that covers the following items: