<p>Norman Vine wrote 10. August 2006 <br>> IMO what is 'crucial' is a formalization of the metadata scheme<br>> we are going to require for data stored at telascience<br>><br>> How we use/expose that is of secondary concern.
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<p>In principle yes, but simultaneous work should be possible. </p>
<p>Regard that this depends on the point of view: Those who want to manage data and data services will formalize an internal scheme. This (including WMS services) is called a 'data provider' in OAI-PMH jargon.</p>
<p>Those who want to aggregate and harvest metadata are 'OAI-PMH service providers', and they are more interested in the information model about the metadata which is offered by the OAI-PMH data providers through the harvesting protocol (tbd).
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<p>Tom Kralidis wrote 8. August 2006:<br>> TK: I agree about the importance of data. Having said this, the<br>> dissemination of the data is (additionally and increasingly) put forth<br>> via web services (i.e. no static links). So our next step would be to
<br>> step back again and thinking of requirements in terms of defining who<br>> the "users" are.</p>
<p>I've made two examples for a 'OAI PMH data provider' which show a geographic data resource (POIs) and a geographic service resource (an online converter): <a href="http://www.geometa.info/rappiinfo/wiki/index.php/OSGeodataMetadataModel#Example">
http://www.geometa.info/rappiinfo/wiki/index.php/OSGeodataMetadataModel#Example</a></p>
<div>Note that there the POIs to me are a geographic data resource 'published' trough two file format streams and a WMS (= one metadata record) whereas there is a 'Geographic File Format Converter at HSR' (= other metadata record) which just points to the URL of the converter and describes its accepted input/output formats.
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<div>To me dissemination relates to the fact that (hopefully) free metadata records are published (= syndicated) through a data provider (like telascience) while a service provider crawls and aggregates these like p.ex.
<a href="http://mapdex.org">mapdex.org</a>, <a href="http://geometa.info">geometa.info</a> and national geodata portals probably do.</div>
<p>-- Stefan</p>