backbone.js and the need of a back-end engine

Question

reading this days about backbone.js (documentation, examples, etc), and as far as i have understood, this framework lets you code directly on the front-end, almost all the back-end engine, since you can structure a MVC architecture. You can create your data model, controllers, etc.

My question is: if you already have the MVC architecture built on the Front-End (engine), you just need a DataBase (SQL) in the cloud from where you can fetch or store data, why do you need a back-end engine (RoR3,Java,etc) to persist document data?

thanks in advance

Answer 1

You are confusing two different meanings of front end, the model in the backbone framework is not able to connect to a database directly, this model are designed to connect to an API (that would be your backend) that is connected to a database