ActiveRecord and Sequel (both ruby ORMs) read the schema from the database. The generated schema.rb file is dumped from the actual database and only used for b

ActiveRecord and Sequel (both ruby ORMs) read the schema from the database. The generated schema.rb file is dumped from the actual database and only used for bootstrapping new installations. ActiveRecord even supports dumping the schema as straight SQL if you like. This is required if your database makes use of db-specific features like views/stored procedures, etc.