Subreports
Pentaho Report Designer (PRD) lets us add as many Subreports to our reports as necessary. This gives us a great hidden potential that we can use anytime.
Until now, we have seen that while various data sets can be defined in a report—for example, when we create Parameters—only one of them will be the principal data set that is, the one that contains the fields we will add to our report. Can you imagine what would happen if we could add two or more principal data sets to our reports? Imagine the quantity of related and unrelated information that our reports could display. Our report might look a lot like a dashboard.
With PRD we can move from internal manipulation of information (imagination) to reality by using Subreports.
Subreports in PRD
From a sci-fi point of view, we could say that by adding a Subreport to our main report, what we are doing is creating a portal to another report, just like in Stargate.
From a more formal perspective, we could say that a Subreport is a report...
