resource
DC, HTTP, DIDL
Modeled Representations
item
Dublin Core
metadata
HTTP
headers
DIDL: base64 or
urls + HTTP headers
records
OAI Identifier ==
URL of Resource
OAI-PMH Data Model in mod_oai
http://techreports.larc.nasa.gov/ltrs/PDF/2004/aiaa/NASA-aiaa-2004-0015.pdf
Set membership ==
MIME type