The subject of this book is a multidimensional data model and data modeling concepts as applied to real data warehouse. The scope of this book covers the basic concepts of data cubes and their elements, such as dimensions, facts, and the measures and their representation in the relational setting, which includes the concept of architecture-related, and it includes multidimensional database query. The book concludes with a chapter that presents the literature that this book is based and offers further reading for readers who want to engage in more in-depth study of specific aspects of the subject book.