The next rule focuses on dominating the main advantages of the tool. To this, it is necessary to know that ROR makes it possible to well structure the work thus offering to all the developers a better management of work. Also, with the possibility of migrations throughout the work, this structure as well as the content of the database can be treated more easily. Added to this, there is the option Active Record and Scaffolding which will also facilitate the work. The last rule is the apprehension of environments during development. It should be noted that ROR makes available to all 3 specific environments in order to facilitate the work namely an environment for development, testing and production.