Book Image

SQL Server Analysis Services 2012 Cube Development Cookbook

Book Image

SQL Server Analysis Services 2012 Cube Development Cookbook

Overview of this book

Microsoft SQL Server is a relational database management system. As a database, it is a software product whose primary function is to store and retrieve data as requested by other software applications. SQL Server Analysis Services adds OLAP and data mining capabilities for SQL Server databases. OLAP (online analytical processing) is a technique for analyzing business data for effective business intelligence. This practical guide teaches you how to build business intelligence solutions using Microsoft’s core product – SQL Server Analysis Services. The book covers the traditional multi-dimensional model which has been around for over a decade as well as the tabular model introduced with SQL Server 2012. Starting with comparing MultiDimensional and tabular models – discussing the values and limitations of each, you will then cover the essential techniques for building dimensions and cubes. Following on from this, you will be introduced to more advanced topics, such as designing partitions and aggregations, implementing security, and synchronizing databases for solutions serving many users. The book also covers administrative material, such as database backups, server configuration options, and monitoring and tuning performance. We also provide a primer on MultiDimensional eXpressions (MDX) as well as Data Analysis expressions (DAX) languages. This book provides you with data cube development techniques, and also the ongoing monitoring and tuning for Analysis Services.
Table of Contents (19 chapters)
SQL Server Analysis Services 2012 Cube Development Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Introduction


This chapter explains how to write the most commonly encountered MultiDimensional eXpression (MDX) queries. You use MDX to model calculations in the MDX script within the cube designer as well as to query the cubes. Although most MDX concepts, functions, and keywords will apply to queries as well as the MDX script, the framework for developing MDX will be distinctly different in each environment.

The basic MDX query construct resembles Structured Query Language (SQL) in a sense that both languages include the SELECT, FROM, and WHERE clauses. However, beyond these clauses, the two languages are very different. SQL operates on rows and columns, whereas MDX works on cube cells, tuples, and sets—concepts you must learn to get your mind around the syntax of MDX. Any errors that you encounter when authoring MDX will also refer to the same terms.

Each cube consists of a multitude of cells, with each cell identifying a single member found in each dimension. Although each cube could contain...