Study of the metadata of the Electronic Archiving System (EASY) of Data Archiving and Networked Services (DANS) for the purpose of getting insight in the internal structure of the collection. The visualization contains a dump of the EASY metadata set and all important data files that were generated during this analysis and used for the interactive website. It contains metadata extracted from EASY version I (before January 1, 2012) and from EASY II (extracted January 20th, 2012).