
The data is unrelated to each other in much the same way “unlinked” data in tables is unrelated. Unlinked subreports in Crystal Reports 2013 simply have no relationship between the records displayed in the subreport and the records displayed in the main report. You can create either linked or unlinked subreports in Crystal Reports 2013.

Subreports in Crystal Reports 2013 allow you to access and display information from two unrelated reports in a single report, or display multiple views of report data in a single report. Subreports in Crystal Reports 2013 also cannot contain another subreport within them.

Subreports in Crystal Reports 2013 are created in the same manner as normal reports, but are then embedded within a main report as a report object. Subreports in Crystal Reports 2013: Overview
