The book “Fundamentals of Database System” teaches the basic ideas about databases. It covers how to create, use, and build database systems. The book talks about designing databases, the languages used in database systems, and the methods to implement database systems. It also explains important parts of a database like Entities, Attributes, Relationships, and constraints. The book shows how to develop a database project and discusses its different stages. Towards the end, the book delves into advanced features of database systems. The main aim of the book is to be a helpful guide for courses on databases or as a reference book.