Ruby on Rails, or simply Rails, is an open source web application framework written in Ruby language that's optimized for programmer ease and sustainable productivity. The Rails part of it is a model-view-controller (MVC) framework that provides default structures for a database, a web service, and web pages. It lets you write beautiful code. It encourages and facilitates the use of web standards such as XML or JSON for data transfer, and HTML, CSS and JavaScript for display and user interfacing. In addition to MVC, Rails emphasizes the use of software engineering patterns and paradigms, including convention over configuration (CoC), don't repeat yourself (DRY), and the active record pattern.
