This UML sequence diagram for an Online Examination System outlines the process of a student logging in, taking an exam, and receiving their score. The student logs into the system, which verifies credentials with the database. Once confirmed, the system grants access to the exam. The student begins the exam, and the system retrieves questions from the Question Bank and displays them. After submitting the answers, the system evaluates them using the Answer Key and provides the scores to the student. Finally, the student logs out of the system.
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Online examination system diagram code in Gleek
Student- logs in -> Online Examination System
Online Examination System- verifies student credentials ->+ Database
Database- confirms student credentials ->- Online Examination System
Online Examination System - provides access to exam -> Student
Student- starts exam -> Online Examination System
Online Examination System- sends exam questions ->+ Question Bank
Question Bank- returns exam questions ->- Online Examination System
Online Examination System - displays exam questions -> Student
Student- submits answers -> Online Examination System
Online Examination System- evaluates answers ->+ Answer Key
Answer Key- returns scores ->- Online Examination System
Online Examination System - displays scores -> Student
Student- logs out -> Online Examination System
Student needs to study before exam:note -- Student
Online Examination System needs to ensure security:note -- Online Examination System
Database needs to be updated regularly:note -- Database
Question Bank should have diverse questions:note -- Question Bank
Answer Key should be accurate:note -- Answer Key
About sequence diagrams
Sequence or event diagrams help create an overview of how a system works. Sequence diagrams show how all the different parts interact with each other over time, carry out the required actions, and complete processes. A sequence diagram descends from top to bottom showing a sequence of interactions and sequence diagram notations.
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