Table 3.

The scenario for registration in the HPIRS

Use case name	Register
Scenario	Registration of the user into the system.
Brief description	Through this use case, the user enters and submits their identity information as well as a username and password.
Actors	Specialist physician, nurse, and system administrator.
Preconditions	Users must have been accepted by the system administrator before they were able to login to the system.
Postconditions	The user's identity information, username, and password are saved. S/he is registered into the system.
Workflow	Actor	System
	− User runs the application. − User requests the registration form. − User enters identity information, username, and password. − User presses the “submit” button.	− The system displays the identity information form. − The system checks the entered information. − The system saves the user identity information. − The message “successfully registered” is shown.
Exceptions	− If the user clicks the “back” button in any step, the system will exit without any changes. − If the system encounters a problem saving the information, it will display the message and will exit the form without any changes.

Abbreviation: HPIRS, hyperbaric patient information registry system.