Amazon.com description: Product Description: This book covers the fundamentals of data warehousing specifically for the it professional who wants to get into the field. It covers every significant topic including planning requirements, architecture, infrastructure, design, data preparation, information delivery, implementation and maintenance. Data warehousing is a hot topic because most enterprises either already have such a program or are planning one. This second edition builds on areas in which significant technology progress has been made since the first edition. Developments are tracked in data marts, real-time information delivery, requirements gathering techniques, multi-tier architecture, olap models, clickstream data webhouse, data mining techniques and applications and data warehouse testing. Errors are corrected and an answers section is added.