Question

Hey guys, how are you?
I was given this exercise: it asks me to draw the USE CASES MODEL, the corresponding SPECIFICATION and finally, the DOMAIN MODEL (it is required to use the cardinality and other things) for the following study case (a brief explanation of everything is needed):

In order to prevent the human contact due to Corona Virus and to guarantee a better experience, a company has decided to develope a QR-based system for all the different restaurants located in the US. This system will allow the customers to place orders by using smartphones, the main objective is to avoid the contact with the menu (that contains the food description), credit cards and tickets.
When the customer arrives, every "available" table will display a QR code that must be scanned to access the menu; it is possible to see all the available products and it's particular descriptions (photos and promotions too). Once the products are selected, the payment must be performed. It is possible to use a credit card or PayPal.
Finally, if the payment was done correctly the staff will receive an alert in the web platform and then, the order will be prepared. When it is ready, the user is notified so that they can pick it up at the counter, that is, the application works as a caller,otherwise, the waiter reaches it at the corresponding table.
On the part of the restaurants, from the web platform they can manage the tables that they want to set up, the menu with the products, the hours and days that they want to offer them and if at the time of delivering an order they will do so through the caller option so that customers come to pick it up, or the option of having a waiter deliver the orders to the tables.
The use of the platform has a fixed monthly cost of $2000 for restaurants; customer can use for free.
It should be considered that the mobile application must work for iOS (8 to 13) and for Android (KitKat to 11.0). For the development of the web platform, the open source framework NET Core will be used.

Answer 1

USE CASE MODEL:

DOMAIN MODEL:

NOTE: I've drawn use case model and domain model and also metioned cardinlaities in domain model.

I have followed each condition and mentioned it

please give an upvote

for any queries please do comment.