registry Data registry Database containing information about trusted repositories that are provided by repository managers and are useful for human and machine users. These registries do not contain information about all metadata descriptions of digital objects, nor do they offer a list of PIDs of all stored digital objects. They do offer information based on standardised types on how to retrieve such information (e.g., the port under which OAI-PMH can be accessed to offer metadata). A registry requires the assignment of a permanent, unique and unambiguous identifier to each item. https://orcid.org/0000-0002-5214-4466 https://orcid.org/0000-0002-7702-4495 https://orcid.org/0000-0003-2687-1982 data stewardship technical concept