If you're building your first real app, you'll hit this question pretty fast: "Should I use SQL or NoSQL?" It sounds intimidating, but once you get the core idea, it's actually pretty simple. Let's break it down. What's a database anyway? A database is just a place to store your app's data so it doesn't vanish the moment you close the browser. Think of it as a very organized filing cabinet. How you organize that cabinet is where SQL and NoSQL split off. SQL datab...