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  • MPEG21 DIDL Application Profile for Institutional Repositories

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Example on level one

<didl:DIDL ...>
<didl:Item>
<didl:Descriptor>...</didl:Descriptor> <!-- Identification, mandatory -->
<didl:Descriptor>...</didl:Descriptor> <!-- Modification date, mandatory -->
<didl:Item>...</didl:Item>
<didl:Item>...</didl:Item>
<didl:Item>...</didl:Item>
...
</didl:Item>
</didl:DIDL>

Example on level two

Object type added

<didl:DIDL ...>
<didl:Item>
<didl:Item>
<didl:Descriptor>...</didl:Descriptor> <!-- Identification, mandatory -->
<didl:Descriptor>...</didl:Descriptor> <!-- Modification date, optional -->
<didl:Descriptor>...</didl:Descriptor> <!-- Type, mandatory -->
...
</didl:Item>
<didl:Item>...</didl:Item>
<didl:Item>...</didl:Item>
<didl:Item>...</didl:Item>
...
</didl:Item>
</didl:DIDL>

...

<didl:DIDL ...>
<didl:Item>
<didl*:Item*>...</didl:Item> <!-- metadata -->
<didl*:Item*>...</didl:Item> <!-- object files -->
<didl:Item>...</didl:Item> <!-- jump-off-page -->
</didl:Item>
</didl:DIDL>

...

<didl:Item>

<didl*:*Item> <!-- one or many occurrences -->
<didl:Descriptor>
<didl:Statement mimeType="application/xml">
<rdf:type rdf:resource="info:eu-repo/semantics/descriptiveMetadata" />
</didl:Statement>
</didl:Descriptor>
...
</didl:Item>

<didl*:*Item> <!-- zero or many occurrences -->
<didl:Descriptor>
<didl:Statement mimeType="application/xml">
<rdf:type rdf:resource="info:eu-repo/semantics/objectFile" />
</didl:Statement>
</didl:Descriptor>
...
</didl:Item>

<didl:Item> <!-- zero or one occurrences -->
<didl:Descriptor>
<didl:Statement mimeType="application/xml">
<rdf:type rdf:resource="info:eu-repo/semantics/humanStartPage" />
</didl:Statement>
</didl:Descriptor>
...
</didl:Item>

</didl:Item>

...

<didl:Item>


<didl:Descriptor>
<didl:Statement mimeType="application/xml">
<rdf:type rdf:resource="info:eu-repo/semantics/descriptiveMetadata" />
</didl:Statement>
</didl:Descriptor>


<didl:Descriptor> <!-- This metadata instance has its own ID number -->
<didl:Statement mimeType="application/xml">
<dii:Identifier>urn:nbn:nl:ui:13-74836724783</dii:Identifier>
</didl:Statement>
</didl:Descriptor>


<didl:Descriptor> <!-- This record has its own Modification date -->
<didl:Statement mimeType="application/xml">
<dcterms:modified>2006-12-20T10:29:12Z</dcterms:modified>
</didl:Statement>
</didl:Descriptor>


<didl:Component>


<didl:Resource mimeType="application/xml"> <!-- the MODS data -->
<mods:mods
xmlns:mods="http://www.loc.gov/mods/v3"
xsi:schemaLocation=
"http://www.loc.gov/mods/v3
http://www.loc.gov/standards/mods/v3/mods-3-3.xsd">
<mods:titleInfo>...</mods:titleInfo>
<mods:name>...</mods:name>
<mods:typeOfResource> ... </mods:typeOfResource>
...
</mods:mods>
</didl:Resource>


</didl:Component>


</didl:Item>

...




<didl:Item>
...

<!-- Below this line one can find links to one or more digital objects -->


<didl:Item> <!-- First Item for a File/Bitstream -->
<didl:Descriptor>
<didl:Statement mimeType="application/xml">
<rdf:type rdf:resource="info:eu-repo/semantics/objectFile" />
</didl:Statement>
</didl:Descriptor>
<didl:Descriptor> <!-- This Object Item has its own persistent ID -->
<didl:Statement mimeType="application/xml">
<dii:Identifier>urn:nbn:nl:ui:13-36724783</dii:Identifier>
</didl:Statement>
</didl:Descriptor>
<didl:Descriptor> <!-- This Item has its own Modification date -->
<didl:Statement mimeType="application/xml">
<dcterms:modified>2006-12-20T10:29:12Z</dcterms:modified>
</didl:Statement>
</didl:Descriptor>

<didl:Component>
<didl:Resource
mimeType="application/pdf"
ref="http://my.server.nl/report.pdf"/>
</didl:Component>
</didl:Item>


<didl:Item> <!-- Second Item for a File/Bitstream -->
<didl:Descriptor>
<didl:Statement mimeType="application/xml">
<rdf:type rdf:resource="info:eu-repo/semantics/objectFile" />
</didl:Statement>
</didl:Descriptor>
<didl:Descriptor> <!-- This Object Item has its own persistent ID -->
<didl:Statement mimeType="application/xml">
<dii:Identifier>urn:nbn:nl:ui:13-36724784</dii:Identifier>
</didl:Statement>
</didl:Descriptor>
<didl:Descriptor> <!-- This Item has its own Modification date -->
<didl:Statement mimeType="application/xml">
<dcterms:modified>2006-12-20T10:29:12Z</dcterms:modified>
</didl:Statement>
</didl:Descriptor>
<didl:Descriptor> <!-- this file is the appendix -->
<didl:Statement mimeType="application/xml">
<dc:description>Appendix</dc:description>
</didl:Statement>
</didl:Descriptor>

...
<didl:Component>
<didl:Resource
mimeType="application/pdf"
ref="http://my.server.nl/appendix.pdf"/>
</didl:Component>
</didl:Item>


<didl:Item> <!-- Third Item for a File/Bitstream -->
<didl:Descriptor>
<didl:Statement mimeType="application/xml">
<rdf:type rdf:resource="info:eu-repo/semantics/objectFile" />
</didl:Statement>
</didl:Descriptor>
<didl:Descriptor> <!-- This Object Item has its own persistent ID -->
<didl:Statement mimeType="application/xml">
<dii:Identifier>urn:nbn:nl:ui:13-36724785</dii:Identifier>
</didl:Statement>
</didl:Descriptor>
<didl:Descriptor> <!-- This Item has its own Modification date -->
<didl:Statement mimeType="application/xml">
<dcterms:modified>2006-12-20T10:29:12Z</dcterms:modified>
</didl:Statement>
</didl:Descriptor>
<didl:Descriptor> <!-- deposit date -->
<didl:Statement mimeType="application/xml">
<dcterms:issued>2010-12-01</dcterms:issued>
</didl:Statement>
</didl:Descriptor>
<didl:Descriptor> <!-- embargo on file -->
<didl:Statement mimeType="application/xml">
<dcterms:available>2010-12-01</dcterms:available>
</didl:Statement>
</didl:Descriptor>

...
<didl:Component>
<didl:Resource
mimeType="application/pdf"
ref="http://my.server.nl/datasheets.xls"/>
</didl:Component>
</didl:Item>

</didl:Item>

...

The third ObjectType Item element contains a link to the jump-off page or intermediate page. This is done in the same way as for the Object Item element. This Item element is optional. There should not be more than one Item of this type. The identifier element and modified elements are optional.


<didl:Item>
...

<!-- Below this line; an Item with a link to one optional Intermediate page -->


<didl:Item>
<didl:Descriptor>
<didl:Statement mimeType="application/xml">
<rdf:type rdf:resource="info:eu-repo/semantics/humanStartPage" />
</didl:Statement>
</didl:Descriptor>
...
<didl:Component>
<didl:Resource
mimeType="text/html"
ref="http://my.server.nl/mypub.html"/>
</didl:Component>
</didl:Item>


</didl:Item>

...