Point 1: OAI-PMH seems to rely on consensus amongst all participants as to which metadata standard to use (i.e. Dublin Core). However, I imagine it is difficult to convince people to provide DC metadata if they are using a different standard for their own purposes -- it's just more work. What I wonder is whether it is easier to try to get people to agree on one standard, or whether it is possible to develop a new protocol that is capable of recognizing and harvesting multiple metadata schemas.
Point 2: If Z39.50 is not designed for full-document retrieval, is there a different standard in the works that addresses that growing need? Is there any institution that has successfully implemented a different system?
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