For details on the OAI-PMH protocol please refer to the official documentation at http://www.openarchives.org/OAI/openarchivesprotocol.html.
Metadata is exposed by the OAI-PMH by sending requests to the repository. Metadata is returned as XML over HTTPS.
To get metadata from the repository, use the following requests, or verbs as defined in the OAI-PMH by adding them to the end of the base URL.
The base URL for the OAI-PMH is https://www.hmschallenger.net/oai.
Use this verb to get basic technical information about the repository.
Use this verb to get a list of all the metadata formats available from the repository. The HMS Challenger OAI-PMH supports the oai_dc format. Oai_dc is a Dublic Core metadata schema providing baseline interoperability.
Use this verb to retrieve the sets of a repository. The HMS Challenger OAI-PMH only supports one set named Objects.
This verb is an abbreviated form of ListRecords, retrieving only headers rather than records.
Use this verb to retrieve records from the repository.
Use this verb to retrieve an individual record from the repository. A required argument for this verb is identifier, that specifies a unique identifier of a record in the repository.
Guide to fields in the Records
A unique identifier identifying the record in the repository.
The date this record was created for selective harvesting.
URL identifying the record.