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Subject: RE: [regrep] Open Archives Initiative Protocol for Metadata Harvesting


It stems from the library/e-journals communities and is an alternative
methodology to ISO23950 in terms of searching union library catalogues:

One model is to send a single query to multiple catalogues in real time
using a standard search protocol such as ISO23950, the second is to
harvest the records from multiple catalogues into a single index.
OAI-PMH serves the latter.

It is not a complex protocol - it is REST-like (in predates REST) and
essentially provides a means of establishing a list of subsets, what
formats (typically XML) the index records can be obtained, and request
the records for that subset of the catalogue - i.e. it follows a
subscription/publication model.

There is a lot of literature about the best approach (and hybrids) for
searching multiple catalogues and whether cross-searching/meta-searching
etc. or harvesting is the better approach.

I did write an article on these approaches sometime ago -
http://www.ariadne.ac.uk/issue23/dovey/intro.html - it predates OAI-PMH
but the principles are more or less the same.

Matthew J. Dovey
Oxford University

> -----Original Message-----
> From: Chiusano Joseph [mailto:chiusano_joseph@bah.com] 
> Sent: 11 May 2004 18:49
> To: regrep@lists.oasis-open.org
> Subject: [regrep] Open Archives Initiative Protocol for 
> Metadata Harvesting
> At the Symposium, Bill Moen of Dublin Core (that's Dublin 
> Ohio) mentioned the "Open Archives Initiative Protocol for 
> Metadata Harvesting[1]", which appears to date back to at 
> least 2001. Has anyone had any experience with this protocol, 
> or even heard of it? Any thoughts on its positioning within 
> the world of various initiatives?
> Excerpt:
> The Open Archives Initiative Protocol for Metadata Harvesting 
> (referred to as the OAI-PMH in the remainder of this 
> document) provides an application-independent 
> interoperability framework based on  metadata harvesting.  
> There are two classes of participants in the OAI-PMH
> framework:
> - Data Providers administer systems that support the OAI-PMH 
> as a means of exposing metadata; and
> - Service Providers use metadata harvested via the OAI-PMH as 
> a basis for building value-added services. 
> Thanks,
> Joe
> [1] http://www.openarchives.org/OAI/openarchivesprotocol.html
> --
> Kind Regards,
> Joseph Chiusano
> Associate
> Booz | Allen | Hamilton
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