IBM Cognos TM1 Developer's Certification Guide

Feeders

Recalling our discussion on rules in Chapter 2, Dimensions and Cubes, it is important to remember that the more rules you implement, the more overall cube performance will be impacted. Specifically, the native consolidation ability of Cognos TM1 will slow down. To address this performance issue, you must make use of the SKIPCHECK and various individual FEEDERS declarations.

Adding rules to a cube will impact TM1's ability to utilize its sparse consolidation algorithm. Fortunately, you can tell TM1 where to look for rules-derived values with feeders that you create.