7. UNIVARIATE MODEL FORECASTING › 7.3 Standard Output › 7.3.4 Updating the Capacity Planning Database

7.3.4 Updating the Capacity Planning Database

You can optionally store the forecasted values of the
dependent variable shown on the Residual Analysis Report in
Figure 7-2 in the forecast file (CPFxxx01) corresponding to
the historical file (CAPxxx01) that contains the historical
data series.  The Save forecast parameter on the Univariate
Model Forecasting screen shown in Figure 7-7 allows you to
specify whether or not to save the forecasted observations.

In the forecast file, future observations are stored in a
special way that is used by other functions of the CA MICS
Capacity Planner to produce comparative graphs and charts.
The FILE_NO data element is used to distinguish between the
various types of observations within the forecast files.  A
future value is stored with a FILE_NO of 11, and a confidence
range with a FILE_NO of 12.  In addition, each forecasted
observation contains the variables FORYEAR and FORMNDY,
FORWEEK, or FORMONTH, which contain the year and
month/week/day values for the most recent historical data
used in making the forecast.

In the example shown in Figure 7-2, data for September 1997
through August 1998 is available in the historical file.
After performing Univariate Model Forecasting, the
corresponding forecast file contains observations from
September 1998 through April 1999.

You can use Presentation Graphics, which is described in
Chapter 4, to present both the historical input to Univariate
Model Forecasting and the results of forecasting studies such
as these.