How to configure Ruby on Rails with no database? -

It would be convenient to use Ruby on Rail for a small website project, which does not have any current requirement for the database I know that I can create an empty database in MySQL and go from there, but does anyone know better to run a train without a database?

Thanks

This line is returned to environment.rb Delete in file:

  config.frameworks - = [: Active_record,: active_resource,: action_mailer]