Performing calculations in a report : About calculated data

About calculated data

Most BIRT reports require calculations to track sales, finances, inventory, and other critical business activities. You can use Interactive Viewer to create calculations to count items in a warehouse or provide more complex financial data, such as tracking stock portfolio performance over time.

To display calculated data in a report, you create a computed column, such as the Total column shown in the report in Figure 5-1. In the following example, you need to calculate the Total because the original report does not provide this data.

Figure 5-1  Report with computed column