Introduction to SQL Server 2000 Analysis Services: Parent-Child Dimensions


About the Series…

This is the fourth article of the series Introduction to MS SQL Server 2000 Analysis Services. As I stated in the first article, Creating Our First Cube, the primary focus of this series will be an introduction to the practical creation and manipulation of multidimensional OLAP cubes. The series is designed to provide hands-on application of the fundamentals of MS SQL Server 2000 Analysis Services (“Analysis Services”), with each installment progressively adding features designed to meet specific real-world needs. For more information on the series, as well as the hardware/software requirements to prepare for the exercises we will undertake, please see my initial article Creating Our First Cube.

A special requirement for this lesson is Microsoft Access 2000, which we will be using to briefly examine source database characteristics of the FoodMart 2000 sample database.

Introduction

In the first article of the series, we used the Cube Wizard to build an initial cube with the assistance of the Dimension Wizard. We progressed through subsequent articles, creating similar dimensions to those we built with the Wizard, focusing largely in our second article on using the Dimension Editor to illustrate options for building a more customized cube. We continued this examination of dimensions in Article Three, where we recreated the calendar time dimension, this time focusing on the process through which the Dimension Wizard converts existing time/date fields to a time dimension, along with its hierarchy of levels and members.

Our last article also exposed ways to customize the predefined, time-related properties that the wizard establishes in building the time dimension, suggesting options for customization of these properties to enhance the cube, from the dual perspectives of user-friendliness and the reporting needs of the organization. We created an example of an alternate time dimension for fiscal time reporting, and then we discussed some of the considerations surrounding the simultaneous housing of both hierarchies in the same OLAP cube structure.

In this article, we will examine another special type of dimension, the Parent-Child dimension, and explore the attributes that make it different from a regular dimension. We will discuss the considerations that surround the Parent-Child dimension, such as the recursive nature of their data sources, and various actions that must be handled differently in their creation and maintenance.

In this article, we will:

  • Discuss unbalanced hierarchies, and scenarios where we need a parent-child dimension
  • Create a parent-child dimension using the Dimension Wizard
  • Work with levels in a parent-child dimension
  • Work with parent-child dimension properties
  • Enable values at the parent level of a parent-child dimension

Page 2: Introducing Parent-Child Dimensions




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William E. Pearson, III

William Pearson
William Pearson
Bill has been working with computers since before becoming a "big eight" CPA, after which he carried his growing information systems knowledge into management accounting, internal auditing, and various capacities of controllership. Bill entered the world of databases and financial systems when he became a consultant for CODA-Financials, a U.K. - based software company that hired only CPA's as application consultants to implement and maintain its integrated financial database - one of the most conceptually powerful, even in his current assessment, to have emerged. At CODA Bill deployed financial databases and business intelligence systems for many global clients. Working with SQL Server, Oracle, Sybase and Informix, and focusing on MSSQL Server, Bill created Island Technologies Inc. in 1997, and has developed a large and diverse customer base over the years since. Bill's background as a CPA, Internal Auditor and Management Accountant enable him to provide value to clients as a liaison between Accounting / Finance and Information Services. Moreover, as a Certified Information Technology Professional (CITP) - a Certified Public Accountant recognized for his or her unique ability to provide business insight by leveraging knowledge of information relationships and supporting technologies - Bill offers his clients the CPA's perspective and ability to understand the complicated business implications and risks associated with technology. From this perspective, he helps them to effectively manage information while ensuring the data's reliability, security, accessibility and relevance. Bill has implemented enterprise business intelligence systems over the years for many Fortune 500 companies, focusing his practice (since the advent of MSSQL Server 2000) upon the integrated Microsoft business intelligence solution. He leverages his years of experience with other enterprise OLAP and reporting applications (Cognos, Business Objects, Crystal, and others) in regular conversions of these once-dominant applications to the Microsoft BI stack. Bill believes it is easier to teach technical skills to people with non-technical training than vice-versa, and he constantly seeks ways to graft new technology into the Accounting and Finance arenas. Bill was awarded Microsoft SQL Server MVP in 2009. Hobbies include advanced literature studies and occasional lectures, with recent concentration upon the works of William Faulkner, Henry James, Marcel Proust, James Joyce, Honoré de Balzac, and Charles Dickens. Other long-time interests have included the exploration of generative music sourced from database architecture.

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