A proposal for a presentation given at the Open Repositories conference in 2015 held in Indianapolis described thus, One of the many successes of the Hydra community is the fundamental notion from which its name is derived—the concept of many interfaces (“heads”) over top of a single repository (the “body”). The recent release of Fedora 4, with its internal RDF-centric model, has spurred efforts for a community-wide model of collections and works, such that the heads can be sure that the body will behave as they expect it to. That model has been designed and vetted by the Hydra community, and its architecture and initial implementations will be presented in this paper. [Note, and the subject of this proposal has since become known as the 'Portland Common Data Model'.]
A workshop given at the 2014 Open Repositories held in Helsinki. The Hydra for Managers workshop will enable repository managers and curators of digital collections to learn about the Hydra Project, encompassing both the community and the technical development. Focusing on the community primarily, topics covered will include an exploration of how Hydra fits local use cases, how to work with Hydra as a repository, and how to engage with the community to serve local needs and the sustainability Hydra going forward. The workshop will run for 90 minutes and will comprise a mixture of presentations and time to discuss questions raised by attendees. The workshop will be led by established Hydra Partners with different perspectives on using Hydra from differently-sized institutions.