The text is written for business students, most of whom will become potential managers, entrepreneurs, or management- level professional who will use and management information system. Achieving this goal will be difficult without a knowledge of the indispensable role of information system in business operations, management decision-making and the strategic success of organisation. This book is carefully written to offer optimum help to the students. I sincerely feel that the students will be greatly benefited through this book. This book is designed to provide such a knowledge-base. Its goal is to help students become managerial end users who can propose and participate in developing business problems. This book, written in a simple language meets the syllabus requirements of the latest syllabus of Commerce discipline students. The Glossary provides a quick reference to all key terms used in the subject. The author welcomes valid comments and suggestions from the readers.