Data Mining is the process of analyzing large amount of data in search of previously undiscovered business patterns. Data Warehousing is a relational/multidimensional database that is designed for Query and Analysis rather than Transaction Processing. This book provides a systematic introduction to the principles of Data Mining and Data Warehousing. It covers the entire range of data mining algorithms (prediction, classification, and association), data mining products and applications, stages of implementing process in detail. It gives an overall idea about ETL tools, Software Products, Schemas, Partition, Back up, Recovery and Tuning. It should be useful to undergraduate and postgraduate students of Computer Science and Information Technology. It