CHAPTER 3.pdf

Chapter 3 COMPUTERIZED EXAMINATION SYSTEM WITH TEST BANK GENERATOR FOR VALENZUELA CHRISTIAN SCHOOL

3.1 Introduction

This chapter will discuss how the proposed system solves the problems of the host

company. According to the investigation it has been found that the Valenzuela Christian School is

in need of a computer based examination to address certain problems during examination period

that will benefit the school, teacher and students.

3.2 System Design Specification

The proposed system will serve as a computer based examination for the host company.

Test questionnaires are based upon the approved questionnaires of the school administrator and

lesson of the teachers. Information and references that are found within the proposed system and

other documents are given to the proponents by the host company.

The system has manual creating examination module with random questions to reduce

cheating among the students and test bank module wherein a user can take examinations as well

as entrance examination. The result of their examination will be recorded through the system.

Examination and other results/information can also be printed.

3.3 Resources

3.3.1 Hardware

Microprocessor- also known as the Central Processing Unit (CPU) is the brain of

all computers and many household and electronic devices. Multiple microprocessors, working

together, are the "hearts" of data centers, super-computers, communications products, and other

digital devices. [http://download.intel.com/newsroom]

RAM - is an acronym for Random Access Memory, a type of computer that can

be accessed randomly; that is, any byte of memory can be accessed without touching the

preceding bytes. RAM is the most common type of memory found in computers and

other devices, such as printers. [http:webopedia.com/term/ram]

Computerized Examination with Test Bank Generator for Valenzuela Christian School 3-1

Hard Disk Drive - is part of a unit, often called a "disk drive," "hard drive," or

"hard disk drive," that store and provides relatively quick access to large amounts of data on an

electromagnetically charged surface or set of surfaces.

Monitor or Display is an electronic visual display for computers.

3.3.2 Software

Operating System (OS) is a collection of software that manages hardware

resources and provides common services for computer programs.

Windows 7 is an operating system produced by Microsoft for use on personal

computers, including home and business desktops, laptops, netbooks, tablet PCs, and media

center PCs.

3.3.3 Methodology

Methodology is the systematic, theoretical analysis of the methods applied to a

field of study, or the theoretical analysis of the body of methods and principles associated with a

branch of knowledge. It, typically, encompasses concepts such as paradigm, theoretical model,

phases and quantitative or qualitative techniques.

3.3.3.1 Prototyping

Prototyping is developed based on the currently known requirements. By

using this prototype, the client can get an actual feel of the system, since the interactions with

prototype can enable the client to better understand the requirements of the desired

system. Prototyping is an attractive idea for complicated and large systems for which there is no

manual process or existing system to help determining the requirements. The prototype is usually

not complete systems and many of the details are not built in the prototype. The goal is to

provide a system with overall functionality.

The proponents chose this because it can make your product more

successful at any stage of its life cycle. A prototype is a preliminary design representation of the

final product. It allows your team and customers to understand the product.


Figure 1

Prototyping Phases

Requirement Gathering requirements of the system are defined in detail. The user is

interviewed in order to know the requirements of the system.

Quick Design a preliminary design or quick design for the system is created. It is not a

detailed design, however, and includes the important aspects of the system, which gives an idea

of the system to the user.

Building Prototype information gathering from quick design is modified to form a prototype.

It represents a rough design of the required system.

Customer Evaluation the proposed system is presented to the user for consideration as part of

the development process.

Refining Prototype refined according to requirements. When the user is satisfied a final

system is developed based on the final prototype.

Engineer Product final system is thoroughly evaluated and tested followed by routine

maintenance on a counting basis to prevent large-scale failures and to minimize downtime.


3.3.4 Data Dictionary

A data dictionary is a collection of descriptions of the data objects or items in a

data model for the benefit of programmers and others who need to refer to them.

[http://searchsoa.techtarget.com]

Table 1 Year master

Description: Details of Grade

FIELD NAME

DESCRIPTION CONSTRAINTS

SIZE

DATA TYPE

Grade ID Unique year id is given toEach Grade

Primary key 4 integer

Grade name Year name of the grade usually unique

Not null 20 varchar

Table 2 Section master

Description: Details of Section

FIELD NAME


SIZE

DATA

Sec ID Unique section id is given to each section Primary key 4 integerYear ID Year id in which section listed Not null 4 integer

Sec name Section name Not null 20 varchar

Table 3 Subject master

Description: Details of Subject

FIELD NAME


SIZE

DATA

Subj code Unique subject id is given to each subject Primary key 20 integerSubj name Subject name Not null 50 varchar

Year id Year id in which subject listed Not null 4 integer

Table 6 Instructor Subject Handle master

Description: Details of Teacher subject handle


FIELD NAME

DESCRIPTION CONSTRAINT SIZE

DATA TYPE

User Id User id in which the Instructor listed Not null 4 integerSubj code Subject code in which the Instructor

subject handleNot null 20 varchar

Table 7 Question Bank master

Description: Details of Question Bank

FIELD NAME


DATA TYPE

Quest ID Unique Question id is given to each question

Primary key 13 varchar

Grade ID Grade id in which the Question listed Allows null 4 integerSubj Code Subject code in which the Question

listedNot null 20 varchar

Quarter Quarter in which the Question listed Not null 15 varcharDifficulty Difficulty in which the Question listed Not null 15 varcharQuestions Question Not null Max varchar

Option 1 First option for the question allows null Max varcharOption 2 Second option for the question allows null Max varcharOption 3 Third option for the question allows null Max varcharOption 4 Fourth option for the question allows null Max varcharAnswers Correct answer for the question allows null Max varcharQTypes Question type in which the Question


Table 8 Student master

Description: Details of Student

FIELD NAME


DATA TYPE

Stud ID Unique Student id is given to each Student

Primary key 8 Big integer

Lname Last name Allows null 50 varcharFname First name Allows null 50 varcharMname Middle name Allows null 50 varchar

Grade ID Grade id in which the Student listed Not null 4 integer


Sec ID Section id in which the Student listed Not null 4 integerUsername Student username of the user Not null 50 varcharPassword Student password Not null 50 varchar

Table 9 Admin/Instructor master

Description: Details of Admin/Instuctor

FIELD NAME


DATA TYPE

User ID Unique user id is given to each admin and instructor

Primary key 4 integer

Lname Last name Allows null 50 varcharFname First name Allows null 50 varcharMname Middle name Allows null 50 varchar

User level User level in which the admin and Instructor listed

Allows null 15 varchar

Username Admin and Instructor username of the user

Allows null 15 varchar

Password Admin and Instructor password Allows null 15 varchar

Table 10 AnswerSheet master

Description: Details of Answer Sheet

FIELD NAME


DATA TYPE

Exam code Exam code in which the Questionnaires listed

Not null 20 varchar

Subj code Subject code in which the questionnaires listed

Not null 20 varchar

Quarter Quarter in which the questionnaires listed Not null 15 varcharQuest ID Question ID in which the Question listed Not null 13 varcharQTypes Question type in which the Question


Stud Answer Answer of student in question Not null Max varcharStud ID Student id in which student listed Not null 8 Big integerDates Date on which Student take their exam Not null 3 Date

Checking Mark obtained by the user for answering Allows null 1 Tiny


the question IntegerUser ID User id in which the instructor listed Allows null 4 integerPoints Student points Allows null 4 integer

Table 12 Exam code master

Description: Details of Exam Code

FIELD NAME


DATA TYPE

Exam code Exam code in which exam details listed Not null 20 varcharYear ID Year id in which examination listed Not null 4 integer

Subj code Subject code in which examination listed Not null 20 varcharQuarter Quarter in which examination listed Not null 15 varchar

Quest ID Question id in which question listed Not null 13 varcharQtypes Question type in which question listed Not null 20 varcharActive Is the question active or not Allows null 3 varchar

User ID User id in which Istructor listed Allows null 4 integerPoints Points in which question listed Allows null 4 integer

QInst ID Question instruction id in which question listed

Allows null 4 integer

Table 13Audit Trail master

Description: Details of Audit Trail

FIELD NAME


DATA TYPE

User id User id in which the Instructor listed Not null 4 integerTransac Transac in which all transaction listed Not null max varcharDates Dates in which transaction listed Not null 7 Datetime2


Table 13 Archive master

Description: Details of Audit Trail

FIELD NAME


DATA TYPE

Transaction ID

User id in which the Instructor listed Not null 4 integer

Transaction Transaction in which all transaction listed

Not null max varchar

Dates Dates in which transaction listed Not null 7 Datetime2


Hierarchical Input Process Output


Figure 2


Test Questionnaire Approval

Grade Level/Subject/Section Information Student Information

Teacher Information Student Exam ResultExamination Details

Answer Key

Grade Level/Subject/ Section Information

Examination


Figure 3 Context Flow Diagram (Existing System)

Summary:

This chapter contains necessary diagrams of the proposed system for Valenzuela Christian

School. It also discusses the different hardware and software that will use to the proposed

system.


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CHAPTER 3.pdf