MS Access integration with Rails through conversion to (Postgres or MySQL) xor direct interaction

I think it is not a good idea to use Access as a datebase.
You could use EMS SQL Management Studio for PostgreSQL to export your
data from access to PostgreSql and then adopt ActiveRecord in your
Ruby project. But you have to adapt the table names and structure as
the ActiveRecord convention or customize the models (http://
2dconcept.com/articles/2-rails-legacy-db-activerecord-conventions).