Unsaved diagram
Rentbikewithoutreservation
Customer
Customer
Scan QR code
on bike Unlock bike
Confirm bike
unlock
10 minutes
Mobileapplication
Mobile application
Verification bike
availability Book the bike
for the user
Bike is reserved
by another user
Reservations logs
Insert payment
5 minutes
Issue sent
Payment
transaction failed
Payment
transaction verified?
Show password
for bike unlock
Resolve issue
20 minutes Cancel a bike
reservation
Log
If the bike is
available or not
The type of
payment must be
chosen, whether
you pay by card
or system credits
Check credits
not enough
credits on
customer account
Payment with credits fail
Payment
Reservation system Payment system
This diagram is an extension of the diagram from the previous task. The user wants to rent a shared bike from
RentBikesBrno company that he met on the street at the moment. Every bike from this company has a unique QR code.
The user scans the bike's QR code and sends it to the mobile application. The application verified if the bike is free because
you have the choice to create a reservation from your home 30 minutes before the rent. If the bike is not free, customer
have to find another bike and do this process again. If the bike is free, the application book the bike for the user. Then
customer have to pay for rent. Customer can choose between payment by card or with system credits. If the payment
transaction is not approved process will end or there is some time events in diagram. Same with credits payment. If the
payment transaction is approved application shows the password for the bike lock. Every bike has a lock on a numeric
password and customer have to unlock the bike before riding. Finally, customer unlocks the bike, confirm bike unlock and
process is done. Customer rent the bike.
Verification request
Verification response
Send reservation
request
Verification request
Verification response
No No
Yes
Yes
Credits
Card
-1 Missing task types
-0.5 messaging should be
modelled in detail in L2
Not following naming conventions
-0.5 Name the main outcome
-1 Missing end of the process
Result: 9 out of 12