按要求设计的订餐管理系统参照了同类软件和ＵＭＬ书中实例及设计要求，保持灵活性和易操作性，并具有良好人性化的用户界面-Required reservation management system designed with reference to similar examples of software and the book UML and design requirements, and maintain flexibility and easy interoperability, and