Premis
The Digital Repository Service (DSR) at Harvard Library has the highest level of PREMIS conformance, by the following guidelines:
"18.4.3.2 Level 3B: Object, Event and Agent Entities
A repository implements the PREMIS Data Dictionary as an internal metadata schema in a way that satisfies the principles of use at both the semantic unit and Data Dictionary levels and in a form that does not require further mapping or conversion. The repository implements, at a minimum, the Object entity; one or more Agents; and sufficient Event metadata to document actions the repository has taken to preserve the digital objects."
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