Report sources are predefined data sets for creating reports.
Use report sources for reports containing the same conditions, so you do
not have to define the conditions more than once. You can also use report sources to implement
the same definitions across your organization.
A report source always consists of a table and a number of conditions.
When you create a new report, you can either use a report source or select a table. Some
examples of report sources are open incidents, closed problems, and so on.