Catch unsafe migrations in development

Identify database issues before they hit production.

allows you to declare database triggers in ruby in your models, and then generate appropriate migrations as they change

Rein adds bunch of methods to your ActiveRecord migrations so you can easily tame your database.

Provide an easy way to check the consistency of the database constraints with the application validations.

Catch unsafe PostgreSQL migrations in development and run them easier in production

Wipe out inconsistent DB and schema.rb when switching branches. Just install this gem and use the standard rake db:migrate command.