Metadata is the backbone of digital curation. Without it a digital resource may be irretrievable, unidentifiable or unusable. Metadata is descriptive or contextual information which refers to, or is associated with, another object or resource. This usually takes the form of a structured set of elements which describe the information resource and assists in the identification, location and retrieval of it by users, while facilitating content and access management. Metadata standards formalise the element structure to ensure that the aims of a user community can be fulfilled.
The Preservation Metadata: Implementation Strategies (PREMIS) international working group was set up by OCLC and RLG in 2003 to define a core set of preservation metadata elements, which could be applied broadly across the preservation community, and to examine a number of practical application issues. In 2005 the group published their final report which included version 1 of the PREMIS Data Dictionary, a metadata set for long-term digital preservation, and accompanying XML schemas, which allows PREMIS compliant metadata to be expressed consistently in XML.
Source: Digital Curation Centre
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