Adding An Ibm Cognos Data Source To An Existing Model - IBM Cognos User Manual

Tip: If you want to use the measures from an OLAP source, create a relational
query against the source data used to build the original OLAP source. This
approach will provide the best possible performance.
Cognos Transformer version 8.x and later does not support parent-child
hierarchies in OLAP data source packages. If you attempt to create data sources
using OLAP packages with parent-child hierarchies, Cognos Transformer will
interpret each parent and child as unique dimensions.
Procedure
1. In a Cognos Transformer model, right-click the Dimension Map and click
2. Browse to select a dimensional package and click Finish.
3. In the dimension tree for the package, select the dimensions, hierarchies, or

Adding an IBM Cognos Data Source to an Existing Model

The New Model wizard lets you specify only one data source, including one query
at a time for each package or report data source, you can use the wizard to add
the structural hierarchy (dimensional data) that is important to your business.
Before you begin
As the modeler, you must ensure that each data source has a unique name and
specify, if true, that all your category codes and source values are unique. This
precaution significantly reduces
v the possibility that end user reports will be negatively impacted by changes in
v drill-through problems
v other errors that can arise in distributed production environments
For more information, see "Resolving Uniqueness Problems in Your Data Source"
on page 23.
If you imported your dimensions to the Dimension Map from a package using the
Insert Dimension from Package option, you can add another dimension from that
package to the Dimension Map using the same option. This adds the additional
query to your package data source and completes the AutoDesign process on the
34
IBM Cognos Transformer Version 10.1.1: User Guide
Insert Dimension from Package.
levels that you want to add to your model and click OK.
The dimensions that you selected are added to the Dimension Map, and a
package data source is added to the Data Sources list. A single query for each
dimension is added under the package data source.
Where possible, Cognos Transformer includes the relevant label and business
key as the source column for each level in the imported dimension. Because
different OLAP sources behave differently, you may need to change the query
items used in the source or category code columns for the levels to ensure the
dimension is in scope with the measures for the model.
The import may include more metadata than expected. This allows you to
refine the columns that are used within the dimension.
Tip: To ensure conformed dimensions across different packages, the original
OLAP source should use unique business keys. This will help to ensure that
Cognos Transformer generates category codes that are conformed to the OLAP
source from which the dimension was created.
category codes