This volume covers two pertinent topics that are continuously advancing the effective utilization and management of information technology applications. One objective of this book is to provide a forum for researchers and practitioners to share research about technical and managerial issues associated with data warehousing and mining. The other focus of this book is the concept of Web engineering, as it addresses how the originally intended use of the Web as a distributed system for knowledge-interchange seems to disappear, compared to the increasing number of e-commerce Web applications. The Web as a global point of sale seems to be very promising but obviously suffered from its heritage - the coarse-grained implementation model, which makes it harder and harder to develop, run and maintain still growing e-Commerce applications. Consequently Web engineering is applied to Web-based e-commerce applications.