Datasets

Abstract

A dataset is a concept that lies somewhere between a data source and a subreport. Datasets allow the engine to iterate through some virtual records, just as data sources do, but they also enable calculations and data grouping during this iteration using variables and groups. Because dataset declarations contain parameters, fields, variables, and groups, they closely resemble subreports, but they completely lack any visual content (i.e., they have no sections or layout information at the dataset level).