Modeling and Developing a Reservation Customer Management Web System Based on a Sequential Software Development Methodology

Abstract

In practice, conventional haircut services often face a number of problems, such as difficulties in managing customer schedules, poorly organized queues, and the absence of an effective booking system. To address these challenges, the implementation of a Website-Based Reservation and Customer Management System using the Waterfall Development Model becomes the right solution. This system is designed to make it easier for customers to book services online, display pricing information, employee profiles, booking history, and give customers the freedom to choose their barber and appointment time. Its development follows the main stages of the Waterfall model, including requirements analysis, design, implementation, verification, and maintenance. In the design stage, Unified Modeling Language (UML) is used to model the system through use case diagrams, activity diagrams, sequence diagrams, and class diagrams to make the analysis and design process more structured. In the implementation process, MySQL is used as the database, Bootstrap is used to design the user interface, and PHP becomes the main programming language. The system is then tested using black-box testing methods to ensure that each feature functions properly. Test results show that this system successfully improves the speed and ease of the service ordering process for customers, while also making it easier for the admin to manage data on prices, employees, orders, customers, and invoices.