It's Single Table Inheritance. It has two types - inventory and store. Inventory produces ice-cream and stores sell ice-cream.
This model records transfers from one location to another. Primarily from inventory to store.
This model records daily sales of ice-cream for each location and flavor.
Stores important app related settings. Like which emails will receive the daily report, quantity level that triggers alert emails, etc.
The bin/dev comman will start the development server at http://localhost:3000.
The bin/rails db:seed command will populate the database with necessary seed data for the application to run.
The bin/rails dev:prime command will populate the database with test data.
The bin/rails db:complete_reset task will destroy tables, re-created them, seed and prime the database. Ideal to reset the development environment.