Mcdonalds needs to have a new sales, inventory and service system designed. You have conducted some interviews and reduced requests down to the following key capabilities of the system:

(1) Customer Will order food and make the payment

(2) Store shift leader Will hold the rights to change the menu and enter the  POS system to make any changes (3)POS System Serve as a backbone for doing the credit / debit card transaction.(4)   Food Preparation Employee This person receives the order placed by the customer through internal order system.

Draw a functional decomposition and context-level diagrams.