Shopify Apps - Build an Example, Back-end

Part of my Shopify Learning Series

Build the app backend see know-how of :
1. Configure the database
Defining an object that will handle
- Database connection
- CRUD operations
- Helper functions for that endpoint

2: Add the API layer
- Format and merge Shopify GraphQL API data
- Add a middleware

3: Connect the database and endpoints to the server

Notes: https://docs.google.com/document/d/1CXQa1YUN1lNyVTawdlA_BwxQD_impPLpmBjZTJz9owo/edit?usp=sharing