I have a Mysql database with a large amount of data and tables. But i need to know how to use this Mysql data in the my new rails application. I\'ve been learning Rails from
Before that, try to learn more about rails and it's conventions. Probably you'll need to adapt your database scheme. Or you could start an application and then import the data, even by SQL or by CSV. Migrating data can be a tedious work, but a necessary one.
You can check this gem to see if it helps on your case, because it will depend on your actual schema.
Or you can follow this idea and load the database schema and data from the old database. It will fail if you don't follow the rails conventions.