Do you understand how databases and APIs work, and how data circulates between components?

In a typical frontend architecture, data circulates between the client, server, and database via an API. The client (browser) sends HTTP requests to the API, which is implemented on the server. The API processes requests, interacts with the database to read or write data, and then returns a response to the client.

For example, when loading a list of users, the frontend makes a request to the API, which accesses the database, retrieves the data, and returns it in JSON format. The frontend receives this data and displays it to the user.

Thus, the API acts as an intermediary between the frontend and the database, ensuring security, business logic, and data formatting. The database stores and manages data, the API provides an interface for accessing it, and the frontend is responsible for user interaction and displaying information.