Yahya Sa’d is a Ph.D. candidate in Systems Engineering and Informatics at the Czech University of Life Sciences Prague, with an academic background in computer science and information systems. His work focuses on requirements modelling and graph database design. His research explores formal techniques for graph normalization, reusable metadata representation, and trait-based data modelling. He also works with technologies and methods such as Neo4j, Cypher, database modelling, object-oriented modelling, and Object-Process Methodology. Consequently, his research aims to connect theoretical software engineering concepts with practical information systems development.