Many large companies have now had SAP R/3 installed for several years, and have an urgent need to analyze the vast amounts of transaction data R/3 is providing them. Getting hold of vital facts and figures and turning them into useful information is a complex and time-consuming task. BW is designed to accurately and effectively support critical business decision-making. It facilitates high-performance and error-free extraction, transfer, transformation, and loading of data from a variety of data sources. This book uses step-by-step instructions with many examples to illustrate key SAP BW functions. Using a real-world business scenario as a running example, the book presents a comprehensive view of BW, from underlying concepts and basic techniques through the technology's most sophisticated capabilities. Tips, lessons, and best practices are discussed. It also covers other relevant technologies. With the clear explanations and practical techniques, SAP professionals will gain both the general understanding and specific skills they need to create effective data extraction tools needed to support decision-making processes.