When you build a cube
in the
Cube Designer wizard, you must specify
the measures that are used to help query the cube. After you have
defined the data input source and the structure of the cube (dimensions,
levels, hierarchies) you can define measures on the Select Measures
page of the
Cube Designer wizard. You can
view the cube's currently defined measures, add new measures, and
remove existing measures.
To define a measure,
you select from the
Available list of columns
and statistics. This list contains the numeric columns in the input
data source and the statistics available for each column. Move the
selected items to the
Cube Measures table.
You can have a maximum of 1024 measures per cube.
Note: If you are including aggregated
data from tables other than the input data source, considerations
for stored statistics should be made. This applies when you are creating
a cube from a detail table or a star schema. You must include measures
for the stored statistics that are required for each derived statistic
that you create in the cube. For example, if you want to calculate
AVG, you must create measures for N and SUM, as well as AVG.