UML Activity Diagram: Janus Cafe and Bar

This article presents UML activity diagrams for Janus Cafe and Bar, covering table booking, food ordering, delivery, and feedback. Use case and sequence diagrams are also included.

Running head: UML ACTIVITY DIAGRAM
UML Activity Diagram: Janus Cafe and Bar
Name of the Student
Name of the University
Author’s note:

1UML ACTIVITY DIAGRAM
Table of Contents
Activity Diagram:.......................................................................................................................2
Use Case Diagram:.....................................................................................................................6
Sequence Diagram:....................................................................................................................7
Bibliography:..............................................................................................................................9

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Activity Diagram:
Booking the table
Figure 1: Table Booking Activity Diagram
(Source: Created by Author)
The customer will login to the system of Janus Cafe and Bar and then select table
booking option. The customer must be registered to be able to login to the system. After the

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registration complete, the system will automatically login the customer but later access the
customer have to login manually again. The customer will select the table booking option.
After the customer enter the requirements. The system books the best table as per the
customer requirements.
Support for the ordering the food online:
Figure 2: Food Ordering Activity Diagram
(Source: Created by Author)
The customer will login first to order food. The order food option will appear after
booking a table or just by clicking food section. The customer can chose the foods from the
menu and the system will show a list of ordered food.

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Supporting the delivery of the foods:
Figure 3: Order Placement Activity Diagram
(Source: Created by Author)

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The customer will chose whether the food is ordered for delivery or dine. The
customer will need to enter the location where the food will be delivered if it is a delivery
order. If the food is ordered for dine then the system will instantly show the price. The
customer will have to pay additional $10 if the delivery location is more than 5 km away. The
delivery may get delayed for some reasons. In that case the customer will get 5% discount in
next order.
Support the getting the feedback from the customer:
Figure 4: Feedback Activity Diagram
(Source: Created by Author)

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The customer can provide their feedback through the system. The feedback can be
delivery, food table booking related. The manager will see those feedback directly.
Use Case Diagram:
Figure 5: Use Case Diagram of Janus Cafe and Bar Application
(Source: Created by Author)
The use case diagram has three actors such as customer, driver and chef. Each of the
users will interact with the system in their own way. The customer will register and then
login to the system to use it. The customer can book tables, order foods, select delivery type
and give feedback. Each of this interactions will be defined through separate operations. The
driver will update the status of the delivery like it is progress, it is cancelled or it is

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completed. After the delivery is complete, the driver will get a digital signature from the
customer. The chef will update the status of the ordered food.
Sequence Diagram:
Figure 6: Sequence Diagram of Janus Cafe and Bar Application
(Source: Created by Author)

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The sequence diagram shows how the customer class objects interacts with the
system. The customer will first try to access the system. It is shown as book table but it can
also be order food. The system will check if user is logged in. The system will ask the
customer to login before further progressing in completing the request. The user can request
for food. Based on the condition that whether the order is for dine in booked table or to be
delivered to customer location further methods and invoked. The customer will make
payment for every table booking or food order. The customer will provide feedback after
receiving service.

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