This book is part of the courseware on ???Diploma in Banking Technology??? (DBT) being offered by the Indian Institute of Banking & Finance. The book has been revised as per the new syllabus and covers the topics including overview of Management Information Systems, Decision Support Systems, Information system Architecture, Programming Languages, Software Engineering, RDBMS, Web Technologies, Data Marts, Data Warehousing, Data Mining, Data Analytics, Big Data, ERP, CRM tools etc. The topics are divided into three modules namely: ?????? Module???A???:???Management???Information???System ?????? Module???B???:???Information???System???Architecture,???Software???Engineering,???Languages,???RDBMS??? ?????? ???Module???C???:???Data Analytics & Related Areas The book written for the Bankers, would also be of interest to the general reader, who is keen to learn about the MIS, DSS, with the developments in recent past and latest trends.