As databases have become more powerful, more standardized, and more affordable, database technology has been transformed from a proprietary technology that companies can use to gain an edge over their rivals into an infrastructural technology that is shared by all competitors. This book presents the concepts for design and implementation of modern databases. An analytical approach is followed so that the concepts learned can be applied not only to the wide variety of databases that exist, but can also be used to build systems for the future. The book provides emphasis on the design and the formalization of databases. The conceptual, mathematical, and practical aspects are stressed. Chapters are divided as: Overview of Database . Architecture . Indigenous Databases . Growth and Development of Databases . Marketing of Databases . Web Application of Databases. The focus is on a coherent systematic coverage of database design, applications, and trends, presenting a reasonably comprehensive explanation of the process of the development of database application systems within the framework of the set processing paradigm.