Online-Exam Report on dpms project queries

1. Online Quiz System
AA2
SURAJ VERMA
RA2111056010012
AA2
DBMS PROJECT

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SRM INSTITUTE OF SCIENCE AND TECHNOLOGY
(Under Section 3 of UGC Act, 1956)
BONAFIDE CERTIFICATE
Certified that DBMS project report titled “” is the bona fide work of Certified
that project report titled “ONLINE QUIZ SYSTEM” is the bona fide work of
Suraj Verma RA2111056010012 who carried out the minor project under my
supervision. Certified further, that to the best of my knowledge, the work
reported herein does not form any other project report or dissertation on the
basis of which a degree or award was conferred on an earlier occasion on this
or any other candidate.
SIGNATURE
Dr. P. Rajasekar
DSBS

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Table of Contents
Introduction...........................................................................................................................................................3
1.1 Purpose ...............................................................................................................................................................4
Software Development and Methodology.............................................................................................................5
2.1 System Development Life-Cycle..........................................................................................................................5
Systems analysis, requirements definition: ..........................................................................................................6
Systems design:.....................................................................................................................................................6
Planning & Analysis ...............................................................................................................................................7
3.1 Project Planning ..................................................................................................................................................7
3.2 Feasibility Study...................................................................................................................................................8
Requirement analysis and specification.................................................................................................................9
System Design .....................................................................................................................................................13
5.1 Design Strategy..................................................................................................................................................13
5.2 Data-flow Diagram ............................................................................................................................................15
1st
Level DFD........................................................................................................................................................15
2nd
Level DFD.......................................................................................................................................................16
5.3 Entity – Relationship Diagram...........................................................................................................................17
Coding .................................................................................................................................................................19
6.1 Introduction to MySql ......................................................................................................................................19
PHP + MySql........................................................................................................................................................19
Queries................................................................................................................................................................19
Open a Connection to the MySQL Server ...........................................................................................................19
6.2 Database Design................................................................................................................................................20
Tables in MySql:..................................................................................................................................................20
Testing.................................................................................................................................................................23
UNIT TESTING..........................................................................................................................................................24
INTEGRATION & SYSTEM TESTING ..........................................................................................................................24
REGRESSION TESTING .............................................................................................................................................24
Screen Shots ........................................................................................................................................................25
Conclusion ...........................................................................................................................................................29
References...........................................................................................................................................................29

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Introduction
Online Exam System is a full-fledged system which is beneficial for both teachers and students.
With this site, Administrator can allow authorized entry of users which includes faculties and
students.
Faculties are the one who register on the site and conduct timed exams in their respective
courses. They can add questions in the test by selecting the available settings.
The tests added by faculties are available to students who can attempt the test and get score
then and there. Thus the purpose of the site is to provide a system that saves the efforts and
time of both the teachers and the students.
Online Exam System is a web application that establishes a network between the faculties and
the students. Faculties enter on the site the questions they want in the exam. These questions
are displayed as a test to the eligible students. The answers enter by the students are then
evaluated and their score is calculated and saved. This score then can be accessed by the
faculties and administrator to evaluate their performance.
Online Exam System provides the platform but does not directly participate in, nor is it involved
in any tests conducted. Questions are posted not by the site, but users of the site.
The administrator keeps an eye on the overall functioning of the system which includes how
many users are using the site, how many tests are added by which faculty, how many students
have given those tests and view the score of any student.
The system entitled “Online Exams System” is application software, which aims at providing
services to the institutes and providing them with an option of selecting the eligible students by
themselves.

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1.1 Purpose
The purpose of on-line test system is to take online test in an efficient manner and no time
wasting for checking the paper. It provides online facility to Institutes to conduct online exams
and to Students to give online exams. Institutes (i.e the faculties in institute) can enter and edit
the questions in test. Students can login and give their respective exams and view their score
then and there. The main objective of on-line test simulator is to efficiently evaluate the
candidate thoroughly through a fully automated system that not only saves lot of time but also
gives fast results
1.2 Scope
This website provides facility to institutes to conduct online exams and maintaining the records
of users by providing authorized entry. Users can register as Faculty / Student and wait for the
admin to send a notification email. User can then login with the valid username and password
and can carry out their respective tasks.
• Maintaining records of users(Faculties and Students)
Admin can add/ delete a particular user who registers on site and can view the activities
of users i.e. how many tests are added by a particular faculty, how many tests are given
by particular student and view their respective scores.
• Add test in particular course (Faculty)
Faculty can add time limited tests in a particular course by adding questions in the same,
can view which student has attempted the tests and view their respective scores.
• Attempt test ( Student)
Student can attempt test added by faculty and get their score then and there. They can
also get the test review i.e. answer explanation of each question in test.

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Software Development and Methodology
A software development process, also known as a software development life-cycle (SDLC), is a
structure imposed on the development of a software product. It is often considered a subset
of systems development life cycle. There are several models for such processes, each describing
approaches to a variety of tasks or activities that take place during the process. Some people
consider a life-cycle model a more general term and a software development process a more
specific term. It aims to be the standard that defines all the tasks required for developing and
maintaining software.
The System Development Life Cycle framework provides a sequence of activities for system
designers and developers to follow. It consists of a set of steps or phases in which each phase of
the SDLC uses the results of the previous one.
A Systems Development Life Cycle (SDLC) adheres to important phases that are essential for
developers, such as planning, analysis, design, and implementation, and are explained in the
section below. It includes evaluation of present system, information gathering, and feasibility
study and request approval. A number of system development life cycle (SDLC) models have
been created: waterfall, fountain, spiral build and fix, rapid prototyping, incremental, and
synchronize and stabilize. The oldest of these, and the best known, is the waterfall model: a
sequence of stages in which the output of each stage becomes the input for the next. These
stages can be characterized and divided up in different ways, including the following:
2.1 System Development Life-Cycle

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Preliminary Analysis:
The objective of phase 1 is to conduct a preliminary analysis, propose alternative solutions,
describe costs and benefits and submit a preliminary plan with recommendations.
Conduct the preliminary analysis: in this step, you need to find out the organization's objectives
and the nature and scope of the problem under study. Even if a problem refers only to a small
segment of the organization itself then you need to find out what the objectives of the
organization itself are. Then you need to see how the problem being studied fits in with them.
Propose alternative solutions: In digging into the organization's objectives and specific
problems, you may have already covered some solutions. Alternate proposals may come from
interviewing employees, clients, suppliers, and/or consultants. You can also study what
competitors are doing. With this data, you will have three choices: leave the system as is,
improve it, or develop a new system.
Describe the costs and benefits.
Systems analysis, requirements definition:
Defines project goals into defined functions and operation of the intended application and
analyzes end-user information needs.
Systems design:
Describes desired features and operations in detail, including screen layouts, business rules,
process diagrams, pseudo-code and other documentation.
Development: The real code is written here.
Integration and testing:
Brings all the pieces together into a special testing environment, then checks for errors, bugs
and inter-operability.

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Planning & Analysis
3.1 Project Planning
Planning
Planning is an objective of each and every activity, where we want to discover things that
belong to the project. An important task in creating a software program is extracting
the requirements or requirements analysis. Once the general requirements are gathered from
the client, an analysis of the scope of the development should be determined and clearly
stated. Customers typically have an abstract idea of what they want as an end result, but do not
know what software should do. Skilled and experienced software engineers recognize
incomplete, ambiguous, or even contradictory requirements at this point. Frequently
demonstrating live code may help reduce the risk that the requirements are incorrect.
Certain functionality may be out of scope of the project as a function of cost or as a result of
unclear requirements at the start of development. If the development is done externally, this
document can be considered a legal document so that if there are ever disputes, any ambiguity
of what was promised to the client can be clarified.
In the planning phase of online exam system, it was decided that the system should be able to
conduct online tests which can be added by the authorized user.
The system will have admin which allows authorized entry of users who register on site and can
view the activities of added users. The admin can add / delete user at any given time. After
deleting any user, all the activities related to the user get deleted from database
Faculty can add practice test which the student can give more than once and actual test where
the final score is recorded and can be given only once.
Students will be able to give the test at the available time of the test and view score
immediately after submitting the test.

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3.2 Feasibility Study
Once scope has been identified (with the concurrence of the customer), it is reasonable to ask:
“Can we build software to meet this scope? Is the project feasible?” All too often, software
engineers rush past this questions (or are pushed past them by impatient managers or
customers), only to become mired in a project that is doomed from the onset.
There are several types of feasibility depending on the aspect they covers. Some important
feasibilities is as follows:-
• Technical Feasibility:-
The technical feasibility assessment is focused on gaining an understanding of the present technical
resources of the organization and their applicability to the expected needs of the proposed system. It is
an evaluation of the hardware and software and how it meets the need of the proposed system
▪ This project on Online Exam System will be platform independent since it is being coded in PHP
scripting language.
▪ HTML is used to create web pages.
▪ MySql database will be used for storing data.
▪ Hardware requirements used are compatible with all O.S.
▪ Only authorized person would be able to use the website so it would be secure.
• Time-schedule Feasibility:-
A project will fail if it takes too long to be completed before it is useful. Typically this means estimating
how long the system will take to develop, and if it can be completed in a given time period using some
methods like payback period. Schedule feasibility is a measure of how reasonable the project timetable
is. Given our technical expertise, are the project deadlines reasonable? Some projects are initiated with
specific deadlines. You need to determine whether the deadlines are mandatory or desirable.
The scheduled time for online exam system was about 3 to 4 months and the project is completed in 4
months.
• Operational Feasibility:- Operational feasibility is a measure of how well a proposed system solves
the problems, and takes advantage of the opportunities identified during scope definition and how it
satisfies the requirements identified in the requirements analysis phase of system development.[4]
• Economic Feasibility:-
The purpose of the economic feasibility assessment is to determine the positive economic benefits to the
organization that the proposed system will provide. It includes quantification and identification of all the
benefits expected. This assessment typically involves a cost/ benefits analysis.

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Requirement analysis and specification
4.1 User Characteristics
This system will be used in Three User Modules which are Administrator, Faculty and
Student. As all of these have different requirements , the modules are designed to meet their
needs and avoid any type Of confusion. The features of all three User Modules have been
described below.
• Administrator
i. Add/Delete/Update Courses.
ii. Add/Delete/Update Events.
iii. Edit institute(school/College) information.
iv. Edit profile i.e Personal and Login information.
v. View list of users active/inactive (faculties and students) registered on site.
vi. Add/Delete a particular User.
vii. View activities of particular faculty. (Profile , Courses and tests added).
viii. View activities of particular student.(Profile ,Tests attempted and score).
• Faculty
i. Register on site.
ii. Login on site after receiving notification email from administrator.
iii. View Upcoming events added by administrator.
iv. View institute(school/College) information.
v. Edit profile i.e Personal and Login information.
vi. View list of courses added by administrator.
vii. Add the course applicable to “My courses”.
viii. Add/Delete/Update tests in that course.
ix. Add/Delete/Update questions in that test.
x. View activities of particular student.(Profile ,Tests attempted and score).
• Student
i. Register on site.
ii. Login on site after receiving notification email from administrator.
iii. View Upcoming events added by administrator.
iv. View institute(school/College) information.
v. View List Of Courses added by administrator.
vi. View tests added in particular course by faculty.
vii. Attempt test and get score
viii. View test review. (Answer explanation , correct/incorrect answers).

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4.2 Features:
The website will allow access only to authorized users with specific roles (Administrator-
maintains the website, Faculty -Register to conduct the exams, Students-Give the exams online)
A summary of the major functions that the website will perform:
• Register/Login:
Admin can directly login on site with the username and password provided by the
developer which can be changed later. Admin can view the number of users who register on site
and looking at the details of that user can add/delete the user.
Faculty and Students should register on site first and wait for the authorization of
admin. After receiving notification email from the admin, they can login with their respective
username and password. They can change their personal details and login information any time
after being authorized by the admin.
• Institute Information:
Admin can add/edit the details about the institute at any given time and it can be seen by
the authorized users.
• Events:
Admin can add/delete a event related to institute such as..
The upcoming events added by admin can be viewed by the users
• Courses:
Admin can add the courses which are provided by the institute and add description for
the same if necessary. The courses added by admin can be seen by all the faculties and students.
Faculty can add the particular courses to “My Courses” allotted to them from the list added by
admin and add tests in that particular course. Student can view the list of courses and attempt
test from a particular course at any given time.
• Test:
Faculty can add test in their course and provide the settings of the same ie.
i. Test Name
ii. Test Instructions
iii. Total number of questions in the test.
iv. Marks of individual questions in the test.
v. Timer for test.
After saving the settings of test, faculty can add questions in the test. They can add and save
as many questions as necessary and then select which questions should be displayed to the
student among the list of questions added. The number of questions selected should match
the number added in the settings of test. After the questions are selected , the faculty
should click on save test so that student can view the test.

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Student can view all the test added by any faculty in any of the course listed by the admin
and attempt the same. Student can attempt a particular test only once except due to some
unavoidable reasons (like power-cut) the answers get saved in database and the student can
resume the test where left.
• Type of questions:
Faculty can add/delete questions in test which can be Multiple-Choice Questions or
True-False type Questions. Total number of questions can vary from test to test.
• Questions:
Faculty can add/ edit questions in test by selecting the following details:
i.Question – Type the question in this field.
ii.Question Type – Select the type of question (Multiple choice Question or True- False
Question )
iii.Options – Provide the multiple options and choose the correct answer.
iv.Answer Explanation – Add the explanation for the correct answer among the given
choices.
• Get Score
Student can attempt the test added by faculty and get score then and there. Only one
question is displayed at a time and the student has to choose the correct answer and click
next.
At the end of last question , complete summary of test is displayed i.e which questions are
answered/unanswered. The student can go back and change the answer from this page
within the time limit of test and then click on submit test to view the score. If the time
exceeds , result is calculated on the number of questions attempted by the student. On
clicking on submit test student can view the following information:
i.Total Marks
ii.Correct
iii.Incorrect
iv.Answered
v.Unanswered
Admin can view the test attempted by student and even check the marks scored by student in
particular test in any of the courses.
Faculty can view the test attempted by student in only the test added by that faculty and even
check the marks scored by student.
• Admin can add/delete/make user active/inactive at any given time.

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4.3 Constraints:
There are some constrains on the features of web-site listed above.
• Admin cannot delete course if tests are added by faculty in that particular course.
• Admin cannot delete a faculty if any student has given the test added by that faculty.
• The courses added by admin can be added by faculty provided no other faculty has added the
same course. That is one course can have only single faculty assigned to it.
• Faculty cannot delete a particular question in test after the test is saved.
4.4 Benefits:
This website reduces the manual work, maintaining accuracy, increasing efficiency and saving
time. Also institutes need not go to develop a new software each time, instead they just register
and conduct a test. For students, it saves time of going to far away centers and also they can
view their result then and there.
4.5 External Interface Requirements:
• Software Interfaces
i. Operating System : Windows
ii. Browser : Google Chrome / Firefox
iii. Database Layer : MySql
iv. Web Server : APACHE 5.0
v. Server Side Scripting : PHP
vi. Client Side Scripting : JAVA SCRIPT
• Hardware Interfaces
i. CPU
ii. Monitor
iii. Keyboard
iv. Mouse

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System Design
5.1 Design Strategy
In software engineering, multi-tier architecture (often referred to as n-tier architecture) is
a client–server architecture in which presentation, application processing, and data
management functions are logically separated. For example, an application that
uses middleware to service data requests between a user and a database employs multi-tier
architecture. The most widespread use of multi-tier architecture is the three-tier architecture.
Three-tier architecture

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Three-tier architecture is a client–server architecture in which the user interface, functional
process logic ("business rules"), computer data storage and data access are developed and
maintained as independent modules, most often on separate platforms. The three-tier model
is a software architecture pattern.
Apart from the usual advantages of modular software with well-defined interfaces, the three-
tier architecture is intended to allow any of the three tiers to be upgraded or replaced
independently in response to changes in requirements or technology. For example, a change
of operating system in the presentation tier would only affect the user interface code.
Typically, the user interface runs on a desktop PC or workstation and uses a standard graphical
user interface, functional process logic that may consist of one or more separate modules
running on a workstation or application server, and an RDBMS on a database
server or mainframe that contains the computer data storage logic. The middle tier may be
multi-tiered itself (in which case the overall architecture is called an "n-tier architecture").
By introducing the middle layer, the client is only handling presentation logic. This means that
only little communication is needed between the client and the middle tier making the client
“thin” or “thinner”. An example of a thin client is an Internet browser that allows you to see
and provide information fast and almost with no delay.
Three-tier architecture has the following three tiers:
Presentation tier
This is the topmost level of the application. The presentation tier displays information related
to such services as browsing merchandise, purchasing and shopping cart contents. It
communicates with other tiers by outputting results to the browser/client tier and all other
tiers in the network. (In simple terms it's a layer which users can access directly such as a web
page, or an operating systems GUI)
Application tier (business logic, logic tier, data access tier, or middle tier)
The logical tier is pulled out from the presentation tier and, as its own layer, it controls an
application’s functionality by performing detailed processing.
Data tier
This tier consists of database servers. Here information is stored and retrieved. This tier keeps
data neutral and independent from application servers or business logic. Giving data its own
tier also improves scalability and performance.
There is one major drawback to the N-tier architecture and that is that the additional tiers
increase the complexity and cost of the installation.

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5.2 Data-flow Diagram
1st
Level DFD
Add Admin
User
Faculty Student
Register Register
Login
Online Exam
System
Online Exam
System
Login

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2nd
Level DFD
Admin
Faculty
Student
Login
Login Login
Register Register
Add
Course
Add
test
Add
Questions
Save
test
Select
test
Select
course
Start
test
Answer the
questions
Get Score
List Of Courses
Add Course
Details
Save
Course
Add Test
Details
List Of Tests

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5.3 Entity – Relationship Diagram
It is a graphical representation of entities and their relationships to each other, typically used in
computing in regard to the organization of data within databases or information systems. An entity is a
piece of data-an object or concept about which data is stored. A relationship is how the data is shared
between entities.
There are three types of relationships between entities:
i. One - to - one
ii. One - to - many
iii. Many - to - many
ER DIAGRAM

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In this ER diagram provided:
User: Represents the users participating in the quiz system. Each user has a unique user ID,
username, and password.
Admin: Represents the administrators who have access to create, update, and delete quizzes
and questions. Each admin has a unique admin ID, admin username (admin_id), and password.
Quiz: Represents the quizzes available in the system. Each quiz has a unique quiz ID, a title,
description, start time, end time, and a Boolean field to indicate whether it is active.
Question: Represents the questions associated with each quiz. Each question has a unique
question ID, content, type, options (if applicable), and the correct answer.
Answer: Represents the possible answers to each question. Each answer has a unique answer
ID, content, and is associated with a question through the question ID.
Result: Represents the results of quizzes taken by users. Each result has a unique result ID,
associated user ID, quiz ID, score, and date completed.
The relationships depicted are:
User participates in many Quizzes, and each Quiz has many participating Users. This is
represented by the "participates in" relationship.
Admin can create, update, or delete many Quizzes. This is represented by the "creates",
"updates", and "deletes" relationships between Admin and Quiz.
Admin can create, update, or delete many Questions. This is represented by the "creates",
"updates", and "deletes" relationships between Admin and Question.
Each Quiz is part of many Results, and each Result is associated with one Quiz. This is
represented by the "part of" relationship between Quiz and Result.
Each Quiz contains many Questions, and each Question belongs to one Quiz. This is represented
by the "contains" relationship between Quiz and Question.
Each User gets many Results, and each Result belongs to one User. This is represented by the
"gets" relationship between User and Result.
Each Question has many Answers, and each Answer corresponds to one Question. This is
represented by the "has" relationship between Question and Answer.

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Coding
6.1 Introduction to MySql
Many of the applications that a Web developer wants to use can be made easier by the use of a
standardized database to store, organize, and access information. MySQL is an Open Source (GPL)
Standard Query Language (SQL) Relational Database Management System (RDBMS) database that is
fast, reliable, easy to use, and suitable for applications of any size. SQL is the ANSI-standard database
query language used by most databases.
PHP + MySql
PHP combined with MySQL are cross-platform (you can develop in Windows and serve on a Unix
platform)
The main reason for using a scripting language like PHP is because of the interaction with databases it
can offer.
The things needed to run PHP scripts which access MySQL databases.
1. Webserver - This can either be on a computer of your own or on a web host. Any web server
software should work with PHP and MySQL but the best to use is Apache, which is free
2. Installation - PHP also needs to be installed on the server. If it is not already installed you can
install it (or ask your web host to install it). It can be downloaded from PHP.net and is also free.
3. MySQL – This is actual database software
Queries
A query is a question or a request.
We can query a database for specific information and have a recordset returned.
Open a Connection to the MySQL Server
Before we can access data in a database, we must open a connection to the MySQL server.
In PHP, this is done with the mysql_connect() function.
Syntax:
mysql_connect(host,username,password,dbname);
Parameter Description
host Optional. Either a host name or an IP address
username Optional. The MySQL user name
password Optional. The password to log in with
dbname Optional. The default database to be used when performing
queries

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6.2 Database Design
The overall objective in the development of database technology has been to treat data as an
organizational resource and as an integrated whole. DBMS allow data to be protected and organized
separately from other resources. Database is an integrated collection of data. The most significant form
of data as seen by the programmers is data as stored on the direct access storage devices. This is the
difference between logical and physical data.
Database files are the key source of information into the system. It is the process of designing database
files, which are the key source of information to the system. The files should be properly designed and
planned for collection, accumulation, editing and retrieving the required information.
The organization of data in database aims to achieve three major objectives: -
• Data integration.
• Data integrity.
• Data independence.
The proposed system stores the information relevant for processing in the MySQL
SERVER database. This database contains tables, where each table corresponds to one particular type of
information. Each piece of information in table is called a field or column. A table also contains records,
which is a set of fields. All records in a table have the same set of fields with different information. There
are primary key fields that uniquely identify a record in a table. There are also fields that contain primary
key from another table called foreign keys.
Online exam System uses the following database structure for storing user data , test data ,questions
data etc.
Tables in MySql:
1. User –
Field Type Constraints
Id Int Primary Key
Username Varchar
Password Varchar
Answer Varchar
Category Varchar
Approved Int
First Name Varchar
Last Name Varchar
Email Address Varchar

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This table stores the information of user (admin, faculty and student) that is personal as well as login
information and primary key id which auto-increments every-time a new user registers.
Personal information includes First Name, Last Name, Email Address, Contact info etc.
Login Information includes username, password, Security Question etc.
One column named Category is introduced to recognize whether the user is Admin, faculty or student.
And another special column named Approved is used for authorized entry of users. i.e. this column is set
when admin adds the respective user.
2. Courses –
Field Type Constraints
PID Int Primary Key
Course Name Varchar
Course Description Varchar
id int Foreign Key
This table stores the courses added by admin i.e Course Name and Course Description and one
primary key ‘PID’ which auto-increments every-time a new course is added.
There is additional Foreign key ‘id’ which states which user(faculty) has added that course.
3. Events –
Field Type Constraints
eid Int Primary Key
Event Name Varchar
Event Description Varchar
This table stores the events added by admin i.e Event Name and Event Description and one primary
key ‘eid’ which auto-increments every-time a new event is added.
4. Test –
Field Type Constraints
tid Int Primary Key
Test Name Varchar
Test Instruction Varchar
TotalQ Double
Timer Varchar
Total Double
Id Int Foreign key
PID Int Foreign Key

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This table stores the details of tests added by any faculty which includes Test Name , Test Instruction
, Total Questions , Marks per question , Timer.
There is one primary key ‘tid’ which auto-increments every-time a new test is added by any faculty.
There are two foreign keys ‘id’ and ‘PID’ which states which user(faculty) has added test in which
course.
5. Questions –
Field Type Constraints
qid Int Primary Key
Question Type Varchar
Question Varchar
Option1 Varchar
Option2 Varchar
Option3 Varchar
Option4 Varchar
CA Varchar
Answer Explanation Varchar
Marks Double
tid int Foreign Key
This table stores the details of questions added in test which includes serial number ,Question , Type
of Question , options , Correct Answer , Answer Explanation.
There is one primary key ‘qid’ which auto-increments every-time a new question is added in any
test.
There is foreign key ‘tid’ which states which question is added in which test.
6. Checkquestion –
Field Type Constraints
cid Int Primary Key
id Int Foreign Key
qid Int Foreign Key
tid Int Foreign Key
UserAnswer Varchar
CorrectAnswer Varchar
Marks Double
Serialnum Double
This table stores the answer choices of user and whether the student has answered/not answered
the particular question in a test.

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Testing
System testing is a critical aspect of Software Quality Assurance and represents the ultimate
review of specification, design and coding. Testing is a process of executing a program with the intent of
finding an error. A good test is one that has a probability of finding an as yet undiscovered error. The
purpose of testing is to identify and correct bugs in the developed system. Nothing is complete without
testing. Testing is the vital to the success of the system.
In the code testing the logic of the developed system is tested. For this every module of the program is
executed to find an error. To perform specification test, the examination of the specifications stating
what the program should do and how it should perform under various conditions.
Unit testing focuses first on the modules in the proposed system to locate errors. This enables to detect
errors in the coding and logic that are contained within that module alone. Those resulting from the
interaction between modules are initially avoided. In unit testing step each module has to be checked
separately.
System testing does not test the software as a whole, but rather than integration of each module in the
system. The primary concern is the compatibility of individual modules. One has to find areas where
modules have been designed with different specifications of data lengths, type and data element name.
Testing and validation are the most important steps after the implementation of the developed
system. The system testing is performed to ensure that there are no errors in the implemented system.
The software must be executed several times in order to find out the errors in the different modules of
the system.
Validation refers to the process of using the new software for the developed system in a live
environment i.e., new software inside the organization, in order to find out the errors.
The validation phase reveals the failures and the bugs in the developed system. It will be come to know
about the practical difficulties the system faces when operated in the true environment.
By testing the code of the implemented software, the logic of the program can be examined. A
specification test is conducted to check whether the specifications stating the program are performing
under various conditions.
Testing may be done at 4 levels
• Unit Level
• Module Level
• Integration & System
• Regression

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UNIT TESTING
A Unit corresponds to a screen /form in the package. Unit testing focuses on verification
of the corresponding class or Screen. This testing includes testing of control paths, interfaces,
local data structures, logical decisions, boundary conditions, and error handling. Unit testing
may use Test Drivers, which are control programs to co-ordinate test case inputs and outputs,
and Test stubs, which replace low-level modules. A stub is a dummy subprogram.
MODULE LEVEL TESTING
Module Testing is done using the test cases prepared earlier. Module is defined during the time
of design.
INTEGRATION & SYSTEM TESTING
Integration testing is used to verify the combining of the software modules. Integration testing
addresses the issues associated with the dual problems of verification and program
construction. System testing is used to verify, whether the developed system meets the
requirements.
REGRESSION TESTING
Each modification in software impacts unmodified areas, which results serious injuries to that
software. So the process of re-testing for rectification of errors due to modification is known as
regression testing.

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Screen Shots
1. Login Screen
2. Admin Home Page

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3. student Profile Page
4. Add Test Page

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b. Add Question Screen
c. List Of Questions Screen

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1. QUIZ tables
3. Score Screen

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Conclusion
The project report entitled “ONLINE EXAMINATION” has come to its final stage. The system
has been developed with much care that it is free of errors and at the same time it is efficient
and less time consuming. The important thing is that the system is robust. Also provision is
provided for future developments in the system. The entire system is secured. This online
system will be approved and implemented soon.
References
• www.cacoo.com
• Draw.io
• https://moodle.org/
• https://www.wscubetech.com/sql-mcq-quiz.html
• https://www.javatpoint.com/sql-mcq