[OAI-implementers] Granularity in Identity and Responses

Atanu Garai atanu.garai at gmail.com
Wed Mar 14 10:04:59 EDT 2007

 hi. I am quite igonorant about the background of this dialogue - but it
sounds familiar. Do I get hold of the guidelines or the background doc you
are referring to?


Atanu Garai
Online Networking Specialist

-----Original Message-----
From: oai-implementers-bounces at openarchives.org
[mailto:oai-implementers-bounces at openarchives.org] On Behalf Of Simeon
Sent: Wednesday, March 14, 2007 7:27 PM
To: oai-implementers at openarchives.org
Subject: Re: [OAI-implementers] Granularity in Identity and Responses

Indeed. I add a couple of clarifications inline:

On Wed, 14 Mar 2007, Somogyi Tamás wrote:
> Hello,
> As the best of my knowledge the Identify/granularity means the highest 
> granularity that can be used either
> 1) in the from and until arguments of ListRecords or ListIdentifiers
> 2) in the datestamps of the records.

i.e. <record><datestamp>IN HERE</datestamp>...</record>

> Smaller granularity can be used of course.

Hmmm... from and until parameters may be in smaller (coarser) granularity
but <record><datestamp> values must be expressed in the finest granularity

> There is no any connection between 1) the granularity of the response 
> date given by the server in all OAI response headers and

<responseDate> must be YYYY-MM-DDThh:mm:ssZ, also <expirationDate> if used

> 2) the datestamps used in the records.

i.e. IN THE METADATA, like <dc:date> in oai_dc


> Best,
> Tamas
>> Hi,
>> A quick question. Apologies in advance if it is covered in
> the specs or
>> the guidelines, but I couldn't find anything about it.
>> My question:
>> If the Identify response gives:
>> <granularity>YYYY-MM-DD</granularity>
>> then do all other responses (responseDate and record
> header datestamp)
>> have to be to this granularity, or can they be expressed
> with a higher
>> granularity?
>> Thanks,
>> Stuart
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