IBM Cognos User Manual page 133

Before you begin
You should clear the Timing options in the property sheets for all currency data
sources so that updates to the Currency Table do not interfere with category
generation in the rest of your model. If you decide to leave all Timing options at
their default settings, ensure that the names of the date columns for the base and
euro currencies differ from the name of the column used to create your time
dimension, and from each other. Otherwise, Cognos Transformer cannot
differentiate between them.
The Currency symbol and Decimals options available in the reporting components
that support run time currency conversion are determined by the Country code
list. To override these defaults, you must specify alternatives in the Currency
Record dialog box or on the Format tab of the Measure property sheet.
Preparing Euro Conversion Source Files
You must prepare your source files for the conversion.
Procedure
1. If you have not already done so, create and load the required source files for
your base Currency Table source files, and then create the corresponding
source files to populate the euro portion of your currency conversion table.
These files should contain the three mandatory columns, and may contain a
fourth currency Label column, as described below:
v For each EMU-member country or region, insert a zero value for the date.
For countries or regions that are not EMU members, add a row for each time
period to which the conversion rates apply, and insert the correct date. This
constitutes the Date column.
v Uniquely identify the countries or regions to which the rates apply, using the
internationally recognized code for each country or region. If the country or
region already appears in the base Currency Table, the code must be
identical to that used there. This constitutes the Country Code column.
v Specify the amount by which you must multiply one unit of the currency to
convert it to a euro. This constitutes the euro conversion rate column.
v Optionally, specify a meaningful label for the currency. If you do not, the
label is generated automatically, from the country or region code.
2. Add a data source to your model for each euro conversion source file.
Note: If you create the time dimension from more than one source file, the
Date column names must match. Also, the column names specified for euro
conversion must differ from those specified for the base Currency Table.
3. Double-click each source in the Data Sources list to open its property sheet,
click the General tab, and clear the Sets the current period check box and all
check boxes under Timing.
Alternatively, ensure that the conversion Date column has a different name
from that of the column used to create the time dimension.
4. Click OK.
Creating a Euro Table
You can create a Euro table to use in the conversion.
Procedure
1. From the File menu, click Currency Table and select the Use Euro
triangulation check box.
Chapter 5. Modeling Your Key Performance Measures
119