Chapter 2 THEORETICAL FRAMEWORK

This chapter discusses about the applications and theories applied in developing

the proposed system. The following are the applications and theories used in developing the

system.

2.1 Introduction

In the development of the proposed system the proponents need to know and analyze all

the information needed in order to develop the system. This information can help the proponents

to enhance the features of the different components of a system which will benefit the users.

2.2 Database

A database is a collection of information that is organized so that it can easily be

accessed, managed and updated. They are designed to offer an organized mechanism for storing,

managing and retrieving information. They do so through the use of tables.

[http://databases.about.com]

The proponents used this theory to properly organize and categorize so that the data and

information are stored in a way that it could be access easily if there are some queries.

2.2.1 Database Normalization

Database normalization is the process of organizing data into distinct and unique

sets. The purposes of normalization are to reduce or eliminate storage of duplicate data and

organize data into an efficient and logical structure. The process of normalization involves

determining what data should be stored in each. [http://tech-fag.com]

The proponents adapted an optimization technique for thorough investigation of

the various pieces of data. It also serves as an improvement in the speed in which tables are

queried, decreasing the chance of tedious maintenance procedures.

Computerized Examination with Test Bank Generator for Valenzuela Christian School 2-1

2.2.2 Microsoft SQL Server 2005

Microsoft SQL Server is a relational database management system developed by

Microsoft. As a database, it is a software product whose primary function is to store and retrieve

data as requested by other software applications, be it those on the same computer or those

running on another computer across a network (including the Internet). [http://tech-fag.com]

The proponents used this theory to shield the database programmer from

deciphering the mechanism of storing data within a database management system.

2.3 Graphical User Interface

A GUI is a graphical user interface to a computer. The term came into existence because

the first interactive user interfaces to computers were not graphical; they were text-and-keyboard

oriented and usually consisted of commands you had to remember and computer responses that

were infamously brief. A GUI sometimes uses one or more metaphors for objects familiar in real

life, such as the desktop, the view through a window, or the physical layout in a building.

[http://tech-fag.com]

The proponents used this theory because it is essential in developing the proposed system

and it serves as an attraction to the users.

2.4 Visual Basic 6.0

Visual Basic is a third-generation event-driven programming language and integrated

development environment from Microsoft for its COM programming model. [http://tech-

fag.com]

The proponents used this theory because Visual Basic is relatively easy to learn and use

compare to other programming languages.

2.5 Networking

Networking is the practice of linking two or more computing devices together for the

purpose of sharing data. Networks are built with a mix of computer hardware and software.

[http://tech-fag.com]

Network Topology refers to layout of a network and how different nodes in a network are

connected to each other and how they communicate.[http://webopedia.com]

Star Topology alternatively referred to as a star network, is one of the most common

network setups where each of the devices and computers on a network connect to a central hub.

A major disadvantage of this network topology is that if the central hub fails, all computers

connected to that hub would be

disconnected. [http://www.computerhope.com/jargon/s/startopo.htm]

The proponents used these theories to increase manageability, efficiency and security

over non-networked systems of the users.

2.5.1 Local Area Networking (LAN)

A local area network supplies networking capability to a group of computers in

close proximity to each other such as in an office building, a school or a home.

The proponents used this theory because a LAN is useful for sharing resources

like files, printers, games or other applications.

Summary

The proposed system is developed to provide a computer based examination to

Valenzuela Christian School to address certain problems during examination period. In

developing of this system the proponents used varied applications that will cater to computer

based examination program.

Computerized Examination with Test Bank Generator for Valenzuela Christian School 2-3