A database is defined as a collection of inter-related data which is used to insert, retrieve and delete the data efficiently. Such data is often stored and accessed electronically from a computer system. Several design and modeling such as relationship model, object model, array model, etc. are often used to create complex databases. The softwares which are used to analyze and capture the data are called database management softwares or DBMS. They are also responsible for interacting with the end-user. A few different types of databases are cloud database, distributed database, embedded database and in-memory database. Advantages of a database management system include data sharing, controllable data redundancy, easy maintenance and ability to share data between different users. A database management system provides user access to database on three different levels-conceptual level, internal level and external level. The topics included in this book on database management systems are of utmost significance and bound to provide incredible insights to readers. The book studies, analyses and uphold the pillars of database management systems and its utmost significance in modern times. It will serve as a valuable source of reference for those interested in this field.