October 2012
Intermediate to advanced
316 pages
8h 47m
English
book
IBM Cognos Dynamic Cubes
by Dmitriy Beryoza, Shilpa Bhimavarapu, Alan Blake, David Cushing, Vlaunir Da Silva, Mario Daigle, Avery Hagleitner, Ian Henderson, Beth Jubera, Skyla Loomis, Chris McPherson, Steven Rogers, Carlos Ruiz, Christopher Yao
Content preview from IBM Cognos Dynamic Cubes
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Chapter 4. Modeling dynamic cubes 77
4.3.5 Parent-child dimensions
Parent-child dimensions do not have defined levels. The data of the parent and child
attributes determine how the members are generated and assembled in to a member tree.
They can have only one hierarchy.
Functions that reference a member in the context of a level or descendants return each child
member that is that many member nodes down the tree. If you have an unbalanced hierarchy,
the member tree will generate without any additional modeling required.
If the parent-child dimension is a slowly changing dimension, the parent and child attributes
need to be surrogate keys.
Data ...
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