Database is where we store content. Firebase Database can handle read and write requests from a front-end app. It can even push updates to our app, so a visitor can get the latest content without having to refresh the page.

Security Rules

We write a front-end app that connects to database directly. That means any savvy user can potentially request data from the database directly too. Security Rules are applied to our database so only the users we want to have access to our data can actually access it.