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OverviewRenowned DAX experts Alberto Ferrari and Marco Russo teach you how to design data models for maximum efficiency and effectiveness. How can you use Excel and Power BI to gain real insights into your information? As you examine your data, how do you write a formula that provides the numbers you need? The answers to both of these questions lie with the data model. This book introduces the basic techniques for shaping data models in Excel and Power BI. It’s meant for readers who are new to data modeling as well as for experienced data modelers looking for tips from the experts. If you want to use Power BI or Excel to analyse data, the many real-world examples in this book will help you look at your reports in a different way—like experienced data modelers do. As you’ll soon see, with the right data model, the correct answer is always a simple one! By reading this book, you will: Gain an understanding of the basics of data modeling, including tables, relationships, and keys Familiarise yourself with star schemas, snowflakes, and common modeling techniques Learn the importance of granularity Discover how to use multiple fact tables, like sales and purchases, in a complex data model Manage calendar-related calculations by using date tables Track historical attributes, like previous addresses of customers or manager assignments Use snapshots to compute quantity on hand Work with multiple currencies in the most efficient way Analyse events that have durations, including overlapping durations Learn what data model you need to answer your specific business questions Full Product DetailsAuthor: Alberto Ferrari , Marco RussoPublisher: Microsoft Press,U.S. Imprint: Microsoft Press Dimensions: Width: 18.50cm , Height: 1.30cm , Length: 22.60cm Weight: 0.460kg ISBN: 9781509302765ISBN 10: 150930276 Pages: 256 Publication Date: 27 April 2017 Audience: Professional and scholarly , Professional & Vocational Format: Paperback Publisher's Status: Active Availability: Not yet available  This item is yet to be released. You can pre-order this item and we will dispatch it to you upon its release. Table of ContentsCHAPTER 1 Introduction to data modeling CHAPTER 2 Using header/detail tables CHAPTER 3 Using multiple fact tables CHAPTER 4 Working with date and time CHAPTER 5 Tracking historical attributes CHAPTER 6 Using snapshots CHAPTER 7 Analyzing date and time intervals CHAPTER 8 Many-to-many relationships CHAPTER 9 Working with different granularity CHAPTER 10 Segmentation data models CHAPTER 11 Working with multiple currencies APPENDIX A Data modeling 101ReviewsAuthor InformationAlberto Ferrari and Marco Russo are the founders of sqlbi.com, where they regularly publish articles about Microsoft Power Pivot, Power BI, DAX, and SQL Server Analysis Services. Both Ferrari and Russo provide consultancy and mentoring on business intelligence (BI). They are also frequent speakers at major international conferences, including Microsoft Ignite, PASS Summit, and SQLBits. Tab Content 6Author Website:Countries AvailableAll regions |
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