You have been tasked with building a simple e$-$commerce database using MongoDB. The database should have the following requirements:

A ER diagram must be made for it

The database should store information about products, customers, and orders.

Each product should have a name, price, and description.

Each customer should have a name, email, and shipping address.

Each order should have a customer, a list of products, and a total price.

Your task is to design and implement the database schema, as well as write queries to retrieve and manipulate data.

Part $1$: Database Schema

Design a database schema that satisfies the above requirements. You should consider the following:

What collections will you need?

What fields will each collection have?

What relationships exist between collections?