Introduction

In this case study, you will explore the development of a comprehensive Point of Sale $($POS$)$

system for a retail store using Microsoft Visual Studio $($MS VS$),$ C#$,$ and Microsoft SQL Server.

The POS system will include essential features such as a centralised database for product

management, a secure login module for user authentication, and a transaction report

generation module for business analytics.

Problem Statement

A local Milkbar Retail faces challenges in managing its POS operations efficiently. The current

manual system lacks scalability, security, and real$-$time reporting capabilities, leading to

operational inefficiencies and data discrepancies. To overcome these challenges, Milkbar Retail

seeks to develop a robust POS system that integrates seamlessly with its existing infrastructure

and addresses the need for centralised data management, user authentication, and transaction

reporting.

Solution Overview

The proposed POS system will be developed using Microsoft Visual Studio, C#$,$ and Microsoft

SQL Server, offering a user$-$friendly interface for sales transactions, inventory management,

and reporting functionalities.

Each member in the team must work on different modules. The individual work should then be

integrated to produce a complete windows$-$based system.

You are required to apply the knowledge that you have learned by developing a windowsbased application. You may examine through internet websites to grasp the idea of how to

develop a good dynamic window$-$based application.

All implementations should include appropriate client and server$-$side $($if any$)$ data validations

which are consistent with the business rules.

Mandatory Modules

$1)$ Database Design and Management

$$ Utilise Microsoft SQL Server to create a centralised database for storing product details,

inventory levels, sales transactions, and user credentials.

$$ Define appropriate table structures, relationships, and constraints to ensure data

integrity and facilitate efficient data retrieval.

$2)$ Login Module

$$ Develop a secure login module using C# and MS VS$,$ allowing authorised users $($cashiers$,$

managers, etc.$)$ to access the POS system.

$$ Implement role$-$based access control to restrict unauthorised access to sensitive

functionalities and data.

$3)$ Transaction Processing

$$ Design intuitive user interfaces for processing sales transactions, including adding items

to the cart, applying discounts or promotions, and processing payments.

$$ Implement validation checks to ensure accuracy in transaction data entry and handling

of various payment methods $($cash$,$ credit card, etc.$).$

$4)$ Transaction Report Generation

$$ Develop a reporting module to generate transaction reports based on user$-$defined

parameters, such as date range, product category, or sales representative.

$$ Utilise SQL queries and stored procedures to retrieve relevant data from the database

and present it in a visually appealing format.

$$ It is recommended that your transaction report should follow standard report design,

which consists of Report Header, Page Header, Details, Page Footer, and Report Footer

sections.

$5)$ Implementation Plan

$$ Database Design: Collaborate with database administrators to design and implement

the database schema, considering data normalisation, indexing, and performance

optimisation.

$$ User Interface Design: Design intuitive user interfaces for login$,$ transaction processing,

and report generation using MS VS and C#$.$

$$ Backend Development: Implement business logic and data processing functionalities

using C# and integrate them with the SQL Server database.

$$ Testing and Quality Assurance: Conduct rigorous testing to ensure the reliability,

security, and usability of the POS system across different scenarios.

$$ Deployment and Training: Deploy the POS system in the production environment and

provide comprehensive training to end$-$users on system usage, data entry, and report

generation.

Project submission

a$)$ The entire VS project.

b$)$ Database script.

c$)$ Project report: System proposal and implementation report should be written in a Word

document $($PDF will not accepted$).$