•OAI-PMH record == modeled representation of the resource
•Can be selectively harvested via OAI-PMH ~ datestamp, set
•Resource can be:
–simple object (1 file)
–compound object (multiple files)
•OAI-PMH records can contain:
–Typical metadata
–Actual resource(s)
•By-Value – base64 encoded
•By-Reference – http address of resource
•both
–Identifiers of metadata and resource(s), unambiguously
mapped to the identified data
–A variety of secondary information