Say I have the following three tables: dogs ------- id (PK) name cats ------ id (PK) name recipies ----------- id (PK) recipie_text I''ve made a model for each of them: Dog, Cat and Recipie. Now I want to create a model, Cookoff, that will contain arrays of Dog, Cat and Recipie objects. There is no associated database table for Cookoff because it''s merely a container for a specific request, not an actual data item. My users will submit a form with the following data: dog_id: 10 cat_id: 12 A Cookoff instance will be created, with the following parameters: - a Dog model object with data from the dogs table where id=dog_id - a Cat model object with data from the cats table where id=cat_id - a Recipe model object with data from the recipies table where the recipie_text contains Dog.name or Cat.name The Cookoff instance would then be available for such things as: Cookoff.Dog.name Cookoff.Recipie[0].recipie_text etc. What would model/cookoff.rb look like? I''m still getting started in both Ruby and Rails, so I hope I have been clear in my question. Thank you again for the help!