Book Image

Microsoft Tabular Modeling Cookbook

By : Paul te Braak
Book Image

Microsoft Tabular Modeling Cookbook

By: Paul te Braak

Overview of this book

Business Intelligence Semantic Models (BISM) is a technology that is designed to deliver analytical information to users through a variety of mechanisms that include model structure, definition, and design. This book demonstrates how to create BISM models so that information can be presented to users in an intuitive and easy-to-use format. Once the model is defined, we also show you how it can be managed and maintained so that the data in it remains current and secure. Microsoft Tabular Modeling Cookbook is an all-encompassing guide to developing, managing, creating, and using analytical models using the Business Intelligence Semantic Model (BISM). This title covers a range of modeling situations and common data analysis related problems to show you the techniques required to turn data into information using tabular modeling. Microsoft Tabular Modeling Cookbook examines three areas of tabular modeling: model development, model management and maintenance, and reporting. This book is a practical guide on how to develop semantic models and turn business data into information. It covers all phases of the model lifecycle from creation to administration and finally reporting. It also shows you how to create models which are designed to analyze data. All sections of BISM modeling from development to management and finally reporting are covered. The sections on development examine a wide range of techniques and tricks required to build models, including moving data into the model, structuring the model to manipulate the data, and finally the formulas required to answer common business questions; all of these are discussed in this book in detail. Finally, the book examines methods of reporting on the data within the model, including the creation of data-driven workbooks and reports for a powerful end user experience.
Table of Contents (18 chapters)
Microsoft Tabular Modeling Cookbook
About the Author
About the Reviewers

Last year and prior period values

One of the most common forms of comparison for a value is that of a base value to prior periods. The idea of a prior period generally takes either of the following two forms:

  • Comparison to a different period which relates to the current period—for example, comparison with the last month

  • Comparison to the same period with a year offset—for example, this month last year

Both forms of this calculation are conceptually the same—it is only the offset that is applied in the calculation that is different. Consider the situation of determining a value for the last month. Here, we perform a base calculation with a monthly offset from the current date. For the last year value, we perform the same base calculation with a 12-month offset. Of course, the 12-month offset can be simplified as one year, but the calculation is the same.

Furthermore, by considering a base calculation in the context of a current date, the logic of prior period calculations can be applied to any...