A rich API Used for programming of single-page Web applications and Web applications synchronicity. Models and Views - The single most important thing that Backbone can help you with is keeping your business logic separate from your user interface. Collections - A Collection helps you deal with a group of related models, handling the loading and saving of new models to the server and providing helper functions for performing aggregations or computations against a list of models. View Rendering - Each View manages the rendering and user interaction within its own DOM element. If you're strict about not allowing views to reach outside of themselves, it helps keep your interface flexible — allowing views to be rendered in isolation in any place where they might be needed. Routing with URLs - In rich web applications, we still want to provide linkable, bookmarkable, and shareable URLs to meaningful locations within an app. Use the Router to update the browser URL whenever the user reaches a new "place" in your app that they might want to bookmark or share. Conversely, the Router detects changes to the URL — say, pressing the "Back" button — and can tell your application exactly where you are now.

* With Application Express, you can focus on the problem at hand. Much of the development process is managed for you: security, authentication, database interactions, input validation, session state management and many other dependencies work out of the box. All the tools you need are available in a single, extensible platform, which runs as a part of the Oracle Database. * Application Express offers all the tools you need to be productive: a modern browser-based IDE, drag and drop layouting, sophisticated code editing, and a rich property editor. Whether you are a citizen developer, or an experienced enterprise developer, Application Express minimizes the complexity involved with multi-faceted applications. * Customize your Application's UI without writing a single line of CSS or Javascript. You can change everything from the way one button looks to the entire theme of the app, with a few points and clicks. All widgets and styles provided by Application Express have been tested extensively, meaning that your app will look good no matter what device or browser you use. Application Express delivers a built-in suite of 35 sample applications. They can be copied, edited, and used as a basis for the applications you want to develop, or as a quick solution for your business's needs.