Workbook on Digital Private Papers > Administrative and preservation metadata > Preservation metadata
Preservation metadata
The PREMIS Data Dictionary 1.0
The first version of the PREMIS Data Dictionary, published in February 2005, was designed to articulate ‘things that most preservation repositories are likely to need to know in order to support digital preservation’. While PREMIS defines what it is necessary to know, it does not specify how this information is to be recorded. This means that the core elements of information, or semantic units, suggested by the PREMIS Data Dictionary could be held in various ways, such as:
- Policy documents.
- Procedural or workflow documents.
- XML:
- One or many XML schemas which happen to record the appropriate information.
- In the PREMIS XML schemas.
- With or without XML packaging (e.g. METS).
- Database tables.
The Data Dictionary also addresses some implementation issues pertinent to the semantic units it defines, such as repeatability, obligation and controlled vocabulary requirements, and supplies useful examples based on the repositories maintained by working group members.
