This thesis analyzes the development and implementation of an online hall reservation management system for higher education institutions, with a special focus on the data and business layers. The aim of the thesis is to develop a robust and efficient system that enables students to easily view schedules while providing staff with a simple and intuitive way to reserve halls for various academic and non-academic activities, ensuring optimal resource management and event organization. The introduction describes the motivation for developing the system, defining the main goals and research methodology. It outlines the planning of the web application development and the specification of project requirements, including user requirements, functional specifications, and models of functions and processes. It also deals with the technologies used for system development, emphasizing scalability and security. The database is covered, including the conceptual and logical data models and the database architecture. Part of the work focuses on the implementation of the web application, including design, programming, testing, and system integration. The thesis provides a comprehensive overview of the development of an online hall reservation management system for higher education institutions. It highlights key aspects of planning, development, and implementation, with the results offering higher education institutions an effective tool for optimizing resource management and event organization, significantly improving the user experience.