Database Design is a sector encompassing the strategies and principles employed in the planning and creation of a database system. It involves the conceptualization of the database structure, the application of design best practices, and understanding of design concepts to ensure optimal performance, security, and usability. This field is typically navigated by application developers and programmers, such as Michael Kappel, who utilize their skills and knowledge to build effective database systems. It is a dynamic discipline that requires a deep understanding of how people interact with databases and how these interactions can be improved.