Datasets.pl
EPrints 3 Reference: Directory Structure - Metadata Fields - Repository Configuration - XML Config Files - XML Export Format - EPrints data structure - Core API - Data Objects
datasets.pl contains definition of additional datasets for data objects. By default all this config file does is define $c->{datasets} as an empty hash reference.
Beyond this the file contains comment out configuration to provide examples for defining a new dataset and then defining fields for that new dataset. Finally defining an Perl package for the data object, so its get_system_field_info and any other bespoke versions of EPrints::DataObj functions needed by this new dataset data object.