CR 1.7 Add MDTYPE values for specific PREMIS schemas

Currently in METS there is an enumerated MDTYPE for PREMIS. However, there are actually 5 PREMIS schemas for the different entities in the PREMIS data model. The PREMIS container (PREMIS-v1-1.xsd) references the four other schemas, which are:

Object-v1-1.xsd

Event-v1-1.xsd

Agent-v1-1.xsd

Rights-v1-1.xsd

The PREMIS schemas were designed to be modular, and it is not a requirement to use the PREMIS container schema. METS and PREMIS implementers are currently considering best practices for using PREMIS with METS, which includes consideration of the use of the PREMIS container. If the container is not used, and the MDTYPE is set to “PREMIS” there is no way of knowing which schema the metadata actually comes from. For instance one could use the Event schema within METS:amdSec:digiProv. In order to process the METS document, it would be useful to know which type of PREMIS metadata is there.

The proposal is to add the following MDTYPE values:

PREMIS:OBJECT PREMIS:AGENT PREMIS:RIGHTS PREMIS:EVENT

Requested by Rebecca Guenther, Library of Congress