IBM Cognos User Manual page 328

Data Sources
The Data Sources list shows all the data sources used to generate model
categories, associate measure values, and create PowerCubes, along with their
source columns.
The icons in the Data Sources list indicate whether the object is a regular data
column
package or report, the icons will appear as they did in Framework Manager or the
IBM Cognos studio.
The IBM Cognos package or report is a container source against which queries are
defined. When the data source is a query based on an IBM Cognos package or
report, other information, such as the filters and attributes used in each query, may
also be shown for the appropriate subordinate level.
Measures
The Measures list, which also appears under the dimension map, may be empty
when you first create your model. For all data sources except IBM Cognos package
and report data sources, you can drag columns from the Data Sources list to the
Measures list to define the measures for your model.
If you attempt to add a measure that has the same name as an existing measure,
you will receive an error message indicating that another measure already has the
same name. Each measure in a model must have a unique name.
A different icon is used for each measure type, as follows.
For data sources other than Framework Manager, you can drag columns from the
Data Sources list to the Measures list to define the measures for your model.
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IBM Cognos Transformer Version 10.1.1: User Guide
or a calculated column
Icon Description
A regular measure that does not have currency conversion
enabled
A calculated measure that does not have currency conversion
enabled
A measure that has currency conversion enabled
A calculated measure that has currency conversion enabled
A measure folder
A calculated measure folder
. If the data source is an IBM Cognos