How to delete all data and recreate a database tables in Rails?

You can drop the database by:

rake db:drop

This will delete the database.

You can create the database by:

rake db:create

You can create all the tables in the database by:

rake db:migrate

You can combine all three commands database by:

rake db:drop db:create db:migrate

You can accomplish it with just one rake task by:

rake db:schema:load

This loads the schema.rb file into the database.

This rake task is dangerous. It is useful only in development environment only. Do not run in any other environment other than development.