By Alexis Leon & Mathews Leon, Vijay Nicole Imprints Pvt. Ltd., 2005

Database Management Systems (DBMS) is one of the most important subjects for students of Computer Science and Information Technology—second only to Software Engineering. Together, these two disciplines form the core foundation of CS and IT education, helping students bridge the gap between academic learning and professional practice.

One of the strengths of DBMS (and Software Engineering) is that the fundamental concepts remain stable over time. New technologies and theories will continue to emerge, but understanding them requires a solid grasp of the basics. Mastery of the fundamentals is what enables students to adapt, grow, and excel in their careers.

Essentials of Database Management Systems is written with the goal of helping readers develop strong expertise in the core principles of DBMS. Our aim was to create a book that covers all essential topics in a clear, accessible manner—comprehensive enough to meet academic requirements, yet not overwhelming for learners.

The book includes 33 chapters and 4 appendices, offering a complete and structured learning path. Three of the appendices—Elements of the Graphical User Interface, Overview of PL/SQL, and Introduction to MS‑Access—are available for download from the book’s companion website.

Designed for students, educators, and professionals, this book provides a balanced, practical, and easy‑to‑understand introduction to the world of database management systems.