This report presents a comprehensive assessment of a relational database system designed for VET Solution, a company providing pet animal services. The report covers the design process, including the creation of an Entity-Relationship (E-R) diagram, normalization, and data validation techniques. It then delves into the development of the database system, showcasing the implementation of tables, queries, and data maintenance strategies. The report further explores the testing phase, outlining test cases and data validation procedures to ensure the system's functionality and data integrity. Finally, it provides technical and user documentation, including a detailed explanation of the database structure, queries, and system flow.