This comprehensive report delves into the realms of Business Intelligence (BI) and Data Mining (DM), offering a thorough exploration of their concepts, applications, and underlying techniques. It begins by establishing the fundamental principles of BI and DM, emphasizing their role in transforming raw data into actionable insights for improved decision-making. The report then progresses to detail key techniques such as decision trees, regression analysis, artificial neural networks, cluster analysis, and association rule mining. Furthermore, it covers advanced topics like text mining, web mining, and big data, equipping readers with a holistic understanding of the field. The report also includes practical exercises and case studies to reinforce learning. Finally, a primer on data modeling provides a foundational understanding for those new to the subject. The report aims to serve as a valuable resource for students and professionals seeking to enhance their knowledge and skills in the dynamic fields of BI and DM.