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1
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<?xml version="1.0" encoding="UTF-8"?>
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<chapter version="5.0" xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink">
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<title>Overview</title>
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5
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<para>The OpenAIRE API allows developers to access the metadata information space of OpenAIRE
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programmatically.</para>
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<itemizedlist>
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<listitem>
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<para>Bulk access:</para>
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<simplelist>
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<member><xref linkend="cha_oai_pmh"/></member>
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<member><xref linkend="cha_projects_http"/></member>
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</simplelist>
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</listitem>
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<listitem>
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<para>Selective access via <xref linkend="cha_http-api"/></para>
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<simplelist>
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<member><xref linkend="sec_http-pubs"/></member>
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<member><xref linkend="sec_http-datasets"/></member>
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<member><xref linkend="sec_http-projects"/></member>
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</simplelist>
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</listitem>
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</itemizedlist>
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<para> Please note that currently the total numbers of metadata returned by the <xref
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linkend="cha_http-api"/> and the <xref linkend="cha_oai_pmh"/> are different because the first
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discards duplicates. </para>
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<para> The behaviour of the OAI-PMH publisher will be updated soon to not export
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duplicates.</para>
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<para>The default format of delivered records is <code>oaf</code> (OpenAire Format - current
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version 0.2): <simplelist>
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<member><link xlink:href="https://www.openaire.eu/schema/0.2/oaf-0.2.xsd"/></member>
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32
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<member><link xlink:href="https://www.openaire.eu/schema/0.2/doc/oaf-0.2.html"/></member>
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33
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</simplelist>
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34
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</para>
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<para>The latest versions of the XML schema and documentation are also available at the following
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links: <simplelist>
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<member><link xlink:href="https://www.openaire.eu/schema/latest/oaf.xsd"/></member>
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<member><link xlink:href="https://www.openaire.eu/schema/latest/doc/oaf.html"/></member>
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39
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</simplelist>
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</para>
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<para>Older versions: <simplelist>
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<member><link xlink:href="https://www.openaire.eu/schema/0.1/oaf-0.1.xsd"><code>oaf</code> XML
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schema v0.1</link></member>
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<member><link xlink:href="https://www.openaire.eu/schema/0.1/doc/oaf-0.1.html"
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><code>oaf</code> XML schema v0.1 documentation</link></member>
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</simplelist>
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</para>
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48
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</chapter>
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