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Design and Implementation of a Computerized Information System

Design and Implementation of a Computerized Information System

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DEDICATION

This research material, titled “Design and Implementation of a Computerized Information System” is dedicated to God for His boundless grace and guidance. It is also a tribute to all computer enthusiasts whose contributions made my research journey smoother and enriched my documentation process, making the experience truly fulfilling.



ACKNOWLEDGEMENT

I am profoundly grateful to everyone who contributed to the successful completion of this project. I am especially grateful to my Supervisor (Name), the Head of Department (Name), and the Lecturers in the Department of Computer Science (CS) for their invaluable guidance and support. I also acknowledge the contributions of authors and scholars whose works on Design and Implementation of a Computerized Information System provided essential insights. Special thanks go to my study area (and any funding organizations, if applicable) for their financial assistance. I am equally thankful to stakeholders, including mentors, teachers, and colleagues, for their encouragement and support. Finally, I deeply appreciate my family and friends for their patience and unwavering support throughout this journey. Your contributions have been instrumental in making this research a reality.



TABLE OF CONTENTS

PRELIMINARY PAGES

CHAPTER ONE

INTRODUCTION

    CHAPTER TWO

    LITERATURE REVIEW

    • 2.1 Introduction
    • ⋮

    CHAPTER THREE

    SYSTEM ANALYSIS AND DESIGN

    • 3.1 Methodology Adopted
    • 3.1.1 Problem Identification Using SSADM
    • 3.2 Analysis of the Existing System
    • 3.2.1 Dataflow of the Existing System
    • 3.2.2 Disadvantages Of The Existing System
    • 3.2.3 Weakness of the existing System
    • 3.3 Feasibility Study
    • 3.3.1 Economic Feasibility
    • 3.3.2 Technical Feasibility
    • 3.3.3 Operational Feasibility
    • 3.4 Analysis of the Proposed System
    • 3.4.1 Data Flow Diagram of the Proposed System
    • 3.4.2 Advantages of the Proposed System
    • 3.4.3 Justification of the Proposed System
    • 3.5 Functional Requirements
    • 3.5.1 Use Case Diagram Of The Admin / User Privileges
    • 3.6 Data Requirements
    • 3.7 High Level Model of the Proposed System

    CHAPTER FOUR

    SYSTEM DESIGN AND IMPLEMENTATION

    • 4.1 Objectives of the Design
    • 4.2 Cohesion and Decomposition High level Model
    • 4.3 Control Center / Overall Dataflow Diagram
    • 4.3.1 Proposed System Operation Flowchart
    • 4.4 System Specification and Design
    • 4.4.1 Input and Output Specification
    • 4.4.2 Database Specification and Design
    • 4.4.3 Data Dictionary
    • 4.5 Choice and Justification of Programming Language
    • 4.6 Program Documentation
    • 4.7 Implementation Techniques
    • 4.7.1 System Testing
    • 4.8 Programming Module Specification
    • 4.8.1 Installation
    • 4.9 Computer Hardware Minimum Requirement
    • 4.10 Software Requirement
    • 4.11 Personnel / User Training
    • 4.12 File Maintenance Module

    CHAPTER FIVE

    SUMMARY, CONCLUSION AND RECOMMENDATION

    • 5.1 Introduction
    • 5.2 Summary
    • 5.3 Conclusion
    • 5.4 Recommendation

    REFERENCES

    APPENDIX A - “SOURCE CODE”

    APPENDIX B - “OBJECT PROGRAM”


    Design and Implementation of a Computerized Information System

    CHAPTER ONE

    Introduction

    Most rental service firms today still use manual information system because their information needs are of moderate size and managers of such firms have probably been enjoying the manual system as regards to their relatively and comfortable low level of transaction activities.

    With the high level of social activities been experienced, It is only the rental firms with very large information or high capacity of rental service with rapid rate of renting per item that are likely to survive pressure, and therefore should link information system to business strategy. With this pressure, there is a need to improve corporate effectiveness through their own involvement in system planning to ensure that business strategy is developed in the context of the computerized environment.

    Among the many rental service centers, majority adopted a great variety of manual information system for management activities most of which are single file system. This single file

    system does not offer opportunities for easy manipulation of data to provide managers an insight into transaction reports such as to rapid statistics for operation analysis, it does not provide instant access to information for controlling and directing the firm. At this point we can see that the world of rental service business lacks conclusion data in the relative effectiveness of manual information system versus computerized information system.

    Different rental service centers at various level of activities with different critical level will agree that stress, confusion and errors increase with increase in volume of information as the transaction activities rises, and there is a great point where manual information system will not operate successfully.

    In this respect, computerized rental service management information system has been developed to provide BRAHAM RENTALS with consistency, comprehensive and reasonable accurate information for planning directly and controlling the activities for which they are responsible and for making timely and effective decision.

    1.1 Statement Of The Problem

    There are problems faced by the management of BRAHAM RENTALS , this problems can be attributed to the fact that they use manual information processing in their activities. These problems include:

    1. Errors and inaccuracy since all computations are done manually.
    2. Updating activities are time consuming very poor and lacks accuracy.
    3. Lack of adequate information for decision making.
    4. Inconsistency and redundancy are often encountered in the information processing system for the generation of management information.
    5. Processing of information is usually time consuming and most times with undesired out

    1.2 Purpose Of The Study

    The purpose of this study is to design a computerized information system that will replace the manual procedures of carrying out operations in the existing management information system of BRAHAM RENTAL SERVICES.

    The designed system will be able to:-

    1. Make entries of all transactions made.
    2. Make necessary equals of relevant information about all the transaction made between the firm and the client.
    …

    CHAPTER TWO

    2.0 Literature Review

    2.1 Introduction

    This chapter focuses on the review of related literature. A literature review includes the current knowledge as well as theoretical and methodological contributions to a particular topic. It documents the state of the art with respect to the topic you are writing. It surveys the literature in the topic selected. In this research work the literature review includes the conceputal review, theoretical framework, the review of related literature …

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