You have that data, but you need to display/print it in a form that users can understand and work with it. Great reports are a critical step in the development cycle.
ReportPro is a great general purposed reporting engine.
In comes in two flavours know as the RP2xx and RP3xx series. Both have designers to produce .RPT files and RP2 is easyto produce Handcoded reports.. if you know how to do it.  RP3 handcoded reports from VO GUI is difficult and this paper shows the techniques to handcode reports for both RP2 and RP3
Special thanks for Oscar Schneider and Eric Visser for the work they had done re RP3 and handcoded reports.