What do people mean when they say to "draw a database"?

I need to draw a relational database and I'm a absolute beginner. I'm not sure what is meant by the word draw? I was going to either write/draw it out but I downloaded MySQL in case it would be useful.

Where do I start with this? Do I need to just write out the titles of all the different areas of info that I need or do I draw almost a mindmap type of plan where I say that, for example, a name is connected another piece of info and so on. How do I differentiate between what goes under primary key, secondary key, entity(?) etc or do I even need to go in to that much detail if it's just an initial drawing of the database.

Thank you for your suggestions and for your patience with my lack of skills!