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Title: DFD
Description: The note for helping for What is DFD, deference and explanation.

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A Data Flow Diagram
On
College Management System

Developed By
Prof
...
Prajapati

Content

• What is DFD?
• Define Symbol of DFD
• DFD Rules

– Objective of the system
– User of the system
– Process of the system
– Data Dictionary
– Input
– Output
– DFD

• System Flow chart

What is DFD?

• A data flow diagram (DFD) is a graphical
representation of the "flow" of data through
an information system,
• A DFD is used as a primary step to create an
overview of the system
...

• It does not show information about process timing
or whether processes will operate in sequence or in
parallel,

ELEMENTS OF DATA FLOW DIAGRAM

DFD
• A data flow diagram (DFD) means the flow of
information for any process or system
...


DFD Rules

• Each process should have at least one input and an
output
...


• Data stored in a system must go through a process
...


DFD Rules
• DFD may draw Process wise or User wise
• There are different level of DFD
• DFD Level 0 (Top level) is also called a Context
Diagram
...

• showing the system as a single high-level process,
with its relationship to external entities
...


DFD Rules
• DFD Level 2 then goes one step deeper into parts
of Level 1
...

• DFD Levels 3 or 4 and beyond is possible,
• but going beyond Level 3 is uncommon
...


Which types of Question?

• Draw flow chart of college management system
• System flow chart

• Draw DFD of college management system
• Objective of system
• Users of system
• Process of system
• Context level diagram
• First level diagram
• Second level diagram
• Third level diagram (If possible)

College Management System

Objective This system is useful for students and Staff
members because Staffs upload materials, fillup Student attendance online
...
And Admin
generate reports
...

3)Student: registration, manage profile, download
materials, view attendance, view result, view news,
put inquiry etc
...

Manage User: Admin mange user like staff and student and staff can view Student Detail
...


Semester Details: Admin can manage semester, faculty & student can view semester detail
...

Attendance: Faculty can fill up the subject wise attendance of students on that day
...

Material: Faculty can upload the material and student can download the material
...
Also Admin
manage examination
...
Also Admin manage news
...

Reports: Admin generate different type of report
...
Admin Login to the system
...
Admin manage users
...
Admin manage course details
...
Admin manage semester details
...
Admin manage subject details
...
Admin manage the Subject wise Attendance
...
Admin manage examination
...
Admin manage news
...
Admin manage Inquiry
...
Admin generate a report
...
Admin logout to the System
...
Faculty can Register and manage his/her profile
...
Faculty can Login to the System
...
Faculty can view Student detail
...
Faculty can view Course detail
...
Faculty can view semester detail
...
Faculty can view Subject detail
...
Faculty can fill-up subject wise attendances of students
...
Faculty can upload own subject materials
...
Faculty can add Examination detail
...
Faculty can add news like notices, submission dates etc
...
Faculty can view student inquiry then provide the solution
...
Faculty logout to the System
...
Students can register and manage his/her profile
...
Student can View course detail
...
Student can view semester detail
...
Student view subject detail
...
Student can View attendance
...
Student can View material and also download it
...
Student can View Examination Detail
...
Student can View news
...
Student may put Inquiry
...
Student logout to the System
...
Login_MST
2
...
Student_Mst
4
...
Tbl_Semester
6
...
Tbl_Exam
8
...
Student_Attendance
10
...
Tbl_News
12
...
0 Context Level Diagram

Manage User info, Course info , Subject
Detail info, Attendance
info,Examination info,News info,Inquiry
info, to Generate Report

ADMIN
View User info, Course &
Subject Detail info,
Attendance info, Examination
info, News info, Inquiry &
Report info

Registration, login, download Material, put
Inquiry , give feedback

Collage
Management
System

Manage Profile, Fill
Attendance,Upload Material,Add
Examination & News info,Answer to
Inquiry info

STUDENT
View Subject ,Course Detail, Material,
Attendance info, Examination info,
News, Inquiry info

View Profile detail, Student info, Course
info, Subject Detail Attendance info,
Examination info, News & Answer to Inquiry
info

FACULTY

0
...
0
STUDENT

Student_Mst

Get Registration Detail
Registration Info

Registration Info
Registration
Store Registration Detail

Get Registration Detail

Faculty_Mst
Registration Info

Registration Info
Login
Info
Verify Username & Password
FACULTY

View Login Info

2
...
0

Store User Detail

Manage User

User Info
Store User Detail

Manage User Detail
Get User Info

Student_Mst

Faculty_Mst

Get User Detail
View User Detail

User Info
Get User Detail
View User Detail
View Course Detail

FACULTY

Get Course

Get Course Detail
STUDENT

4
...
0
ADMIN

Manage Semester Detail
Semester Info

Get Semester Detail
View Semester Detail

Store Semester Detail
Semester Detail

Tbl_Semester
Give Semester Info

Get Semester Detail
View Semester Detail
Get Subject Detail

FACULTY

View Subject Detail

Get Subject Detail
STUDENT

6
...
0
ADMIN

Manage Attendance
View Attendance Info

Store Attendance Detail
Attendance

Tbl_Attendance
Attendance Info

Request for Attendance Detail
View Attendance Detail Fill up Attendance Detail
View Attendance Detail
Add Examination Detail
FACULTY

View Examination Detail

Request for Examination information
STUDENT

8
...
0
ADMIN

Manage News

Store News

View News Info
Request for News Detail
View News Detail

News

Tbl_News
View News

Add News Detail
View News Info

FACULTY

Upload Material
View Material

Get Material
STUDENT

10
...
0

Tbl_Inquiry

Put Inquiry

Inquiry

STUDENT

Give Material

View Inquiry details

Manage Inquiry
view Inquiry Detail
12
...
Login_MST
2
...
Student_Mst
4
...
Tbl_Semester
6
...
Tbl_Exam
8
...
Student_Attendance
10
...
Tbl_News
12
...
No
...

:- Username
:- username (Ref:- Faculty_Mst(username))

Field Name

Data Type

Constraint

Description

1

Username

Varchar(10)

Foreign key

2

Password

Varchar(10)

Not Null

Store the User Name
(Ref:-Faculty_Mst(username))
Store the Password

3

Login_Type

Varchar(8)

Not Null

Store the Login Type like Admin,
Faculty, Student
...
No
...
etc
Title: DFD
Description: The note for helping for What is DFD, deference and explanation.