Book Image

IBM Cognos TM1 Developer's Certification guide

By : James D. Miller
Book Image

IBM Cognos TM1 Developer's Certification guide

By: James D. Miller

Overview of this book

IBM Cognos TM1 is enterprise planning software that provides a complete, dynamic environment for developing timely, reliable and personalized forecasts and budgets. It is a real time, in memory tool that helps any sized business perform planning, budgeting and forecasting as well as other financial exercises. This book prepares you to master COG-310 certification using an example-driven method that is easy to understand. The IBM Cognos TM1 Developer's Certification guide provides key technical details and background to clear the current IBM Cognos TM1 Developer (test COG-310) certification exam. This certification book covers all the modules of the certification clearly and in depth. The initial chapters cover in detail the components that make up Cognos TM1 and designing and creating dimensions and cubes. The book then dives deep into basic and advanced scripting using TurboIntegrator and then we learn to understand and write basic Rules. We then learn about the drill-through functionality of TM1, virtual and lookup cubes and lastly Time, and presenting and reporting data
Table of Contents (15 chapters)
IBM Cognos TM1 Developer's Certification Guide
About the Author
About the Reviewer
Free Chapter
The Components of TM1

Granularity—the lowest level of time detail required

Granularity is the extent to which a system is broken down into small parts, either the system itself or its description or observation. It is the extent to which a larger entity is subdivided—Wikipedia.

The most common granularities for a time dimension are:

  • Month

  • Week

  • Day

Month—two time dimensions

Cognos TM1 cubes that store data at the monthly level of detail may have one or two time dimensions. If you have two, this would mean that you will have one dimension for the year and one dimension for the month.

Why would you have both a year and a month dimension, in the same cube?

Some of the advantages of separating the year and month into two dimensions include:

  • It is easier for year on year comparisons.

  • It will require less maintenance for the system administrator requiring that only a single element be added to the year dimension once a year.

  • It is easier to take advantage of TM1's relative data spreading

Disadvantages might include:

  • It makes...