For better or worse, our DSpace 6.3 XMLUI repository, VTechWorks, is 
organized as a multi-level hierarchy of communities based on the 
organizational structure of the University, 
https://vtechworks.lib.vt.edu/community-list. I am trying to understand the 
options for migrating to DSpace 7. I have found the  DSpace 7 Wiki - 
Entities page, 
https://wiki.lyrasis.org/display/DSDOC7x/Configurable+Entities, quite 
helpful. 

The simplest option is to leave Entities disabled and to migrate our 
existing community structure as-is. That seems the choice taken for 
JEWLScholar at Middle Tennessee State, 
https://jewlscholar.mtsu.edu/community-list.

Iowa State Digital Repository, has enabled Entities, 
https://dr.lib.iastate.edu/community-list. The Academic and Administrative 
Units collection, 
https://dr.lib.iastate.edu/collections/90ee9f70-f4eb-4b4d-87c7-97cc3dccff56?scope=90ee9f70-f4eb-4b4d-87c7-97cc3dccff56,
 
seems to contain all the Organizational Units in a very long simple list. 
However there seems to be some hierarchy for the OrgUnits, although it is 
not visible in the list. For instance, The Zoology and Genetics OrgUnit, 
https://dr.lib.iastate.edu/entities/orgunit/4a2929da-5374-4338-b62f-f5fd9e156ef9/full,
 
has  dc.relation.ispartof=ag_hist, which is the Historical Departments, 
College of Agriculture and Life Sciences OrgUnit, 
https://dr.lib.iastate.edu/entities/orgunit/577eaec6-f3b3-43cd-92c3-ea9879d56152.

Since entities are Items and Items are not hierarchical is this 
dc.relation.ispartof a way to add a hierarchy to entities that normally 
would not be hierarchical?

I think we prefer to maintain a hierarchy, but only one, either communities 
or the OrgUnits. It seems like there might be advantages to having the 
hierarchy within the OrgUnits but I'm not clear whether that is possible. 
Also we would want a way to visually communicate that hierarchy, which is 
something that seems missing in the Iowa State list of OrgUnits.

I'd appreciate any insights about how entities might be used or avoided for 
representing this hierarchy.

Thanks,

Anne

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