Project Development

I have been in contact with the LSU for extra tutorial for the database side of my project. I have organised a session for Tuesday at 12. I have been trying to do the development side of my project for the last two days. But I heard that we should really do the database side of things first and then do the HTML side CSS. Build the site around the database instead of vice versa. We have the presentation of first prototype next week. Hopefully I can pull it all together before then. I have the components for HTML, CSS, Javascript etc but I need to be aware of designing around a database.