Scenic makes it easy to manage database views in Rails applications using migrations, treating views as first-class database objects. It allows you to version views, update them safely, and query them through ActiveRecord models. 

Setup involves adding the gem, generating a migration for the view, and writing SQL definitions. It supports Rails 6, 7 and 8 with Ruby 3+, and PostgreSQL as the primary database. 

It has database consistency and leverages SQL power within Rails, while weaknesses are Postgres-only support and the need to write SQL by hand.