DFD for Online Examination System

Data flow diagram for Online Examination System is used to create an overview of online examination system without going in too much detail.  The Online Exam System is used to take student examination online with the help of computer system. This process saves a lot of time in evaluation process and result can also be prepared instantly. The overall Exam System is represented and described using input, processing and output in DFD. The DFD diagram for Online Examination System provides information about the inputs and outputs of each process and entity of entire system such as student, exam administrator, question paper, questions etc.

Also check: DFD for Customer Relationship Management System

Following are Online Examination System DFD level 0 1 2. Let us explain each one by one.

Context Level (0 Level) DFD of Online Examination System

The Zero Level DFD for Online Examination System depicts the overview of whole online examination process. It is supposed to be an abstract view of overall system. This is also called as context diagram for Online Examination System in which entire system is represented as single process with its relationship with external entities such as admin, Student etc.

Context Level DFD of Online Examination System

In this data flow diagram, you will see the general process done during exam process.

First Level Data Flow Diagram (Level 1 DFD) of Online Examination System

The first level DFD (1st Level) of Online Examination System shows more details of processing. Level 1 DFD list all the major sub processes that makes the entire system. It also identifies data store of student record that contains all data of student, OES Master Record that contains several master data used in the entire system such as class data, subject data, question data etc. that will be used during different other process like student registration, question paper setup, conducting online examination etc.

First Level DFD of Online Examination System

The important process to be carried out are:

  1. Student Registration
  2. Login & Access Management
  3. OES Master & Question Paper Setup
  4. Conduct Examination
  5. Certificate & Report

The level 1 DFD for Online Examination System provides a broad overview but go into greater depth than context level diagram.

Second Level Data Flow Diagram (2nd Level DFD) of Online Examination System

Level 2 DFD for Online Examination System delves even deeper into the concept of Level 1 DFD.

2nd Level DFD of Online Examination System

The first level (1st level) DFD of Online Examination System represents how the system is divided into sub systems and the second level provides more details about OES Master & Question Paper Setup and Conduct online examination such as: class/course entry, exam subject entry, question entry, exam paper setup, conduct examination, prepare result etc.

Level 2 DFD of Online Examination System

Following are some functionality of Online Examination system

  1. Admin can add, edit and delete master records for online exam such as: class/course, subject etc.
  2. Admin can add, edit and delete question.
  3. Admin can prepare examination paper
  4. Admin can add, edit and delete examination schedule
  5. Student can register online.
  6. Student can participate in online examination and submit their answers.
  7. Admin can prepare result
  8. Students can print certificate of examination.

After viewing this level now you will be more clear about where data input goes and from where output data comes. This Level 2 Data Flow Diagram shows you a detailed process of online examination and also give you a clear view about data that flows into the system.

May this detailed article one online examination system DFD will help you in your project preparation.

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