1. Frauke Ziedorn
IASSIST 2013
Workshop: da|ra: How to obtain a DOI name for my social and
economic research data?
28th May 2013
DataCite and its DOI infrastructure

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DataCite
• Growing demand to make data citable.
• DataCite is an international consortium whose aims are
• to establish easier access to research data on the Internet
• to increase acceptance of research data as legitimate,
citable contributions to the scholarly record
• to support data archiving that will permit results to be
verified and re-purposed for future study.
• DataCite was founded 2009 in London with 7 members at the
initiative of the TIB.
• 2013:
• 17 members from 12 countries,
• 5 associated members,
• ~1.5 Million DOIs

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The DOI®
System
• The DOI system offers long-term persistence and
accessibility of data.
• Based on the Handle system.
• In May 2012 the DOI System ISO Standard 26324 was
published.
• Part of the quality control is mandatory metadata for
each object registered with a DOI.
DOI®
, DOI.ORG®
and shortDOI®
are trademarks of the International DOI Foundation

4. 4
International DOI
Foundation
DataCite
DataCite Member
Data CentreData CentreDatacenter
DataCite Member
Data CentreData CentreDatacenter
…
Managing Agent
TIB
Member
Associate
Members
10 DOI Registration
Agencies
DOI Infrastrukture

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DataCite Services
• Registration and updating of DOI names.
• Storage of metadata.
• Accessible via UI or API.
Metadata Store (MDS)

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DataCite and Metadata
• Metadata make data discoverable.
• Long-term maintenance of metadata is an
important part of the persistence of an identifier.
• Schema is inspired by Dublin Core.
• Core value of the DataCite Metadata Schema:
Linking between data and related objects.
• Future vision:
Links between all related publications and objects.

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DataCite Metadata Schema
• Identifier (with type attribute)
• Creator (with type and nameIdentifier attributes)
• Title (with optional type attribute)
• Publisher
• PublicationYear
• Citation:
Creator (PublicationYear): Title. Publisher. Identifier
Mandatory Properties

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Citation
Creator (PublicationYear): Title. Publisher. Identifier
Dataset:
Kuhlmann, H et al. (2009):
Age models, iron intensity, magnetic susceptibility records and dry bulk density of
sediment cores from around the Canary Islands. PANGAEA - Data Publisher for
Earth & Environmental Science.
doi:10.1594/PANGAEA.727522,
Is supplement to this article:
Kuhlmann, Holger; Freudenthal, Tim; Helmke, Peer; Meggers, Helge
(2004): Reconstruction of paleoceanography off NW Africa during the last 40,000
years: influence of local and regional factors on sediment accumulation.
Marine Geology, 207(1-4), 209-224,
doi:10.1016/j.margeo.2004.03.017

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DataCite Metadata Schema
• Subject (with scheme attribute)
• Contributor (with type and nameIdentifier attributes)
• Date (with type attribute)
• Language
• ResourceType (with description attribute)
• AlternateIdentifier (with type attribute)
• RelatedIdentifier (with type und relationType attributes)
• Size
• Format
• Version
• Rights
• Description (with type attribute)
Optional Properties

10. 10
Hands-on Session
http://test.datacite.org
Login: TEST.IASSIST
PW: IASSIST2013

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DataCite Services
• Search engine for all metadata stored in the MDS.
• Filter options to refine the search.
Metadata Search

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DataCite Services
• Exposes metadata stored in the MDS using the Open Archives
Initiative Protocol for Metadata Harvesting (OAI-PMH).
• Service is open to everyone.
• Available metadata formats:
• OAI Dublin Core (oai_dc)
• OAI DataCite (oai_datacite)
This format contains several other elements describing the version
of the metadata, whether it is of reference quality, and the
registering datacentre.
• DataCite Direct (datacite)
OAI-PMH Data Provider

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DataCite Services
• Exposes metadata stored in the MDS using multiple formats:
DataCite XML, DataCite text citation, RDF/XML, RDF Turtle, BibTex, RIS, HTML
• Accessible with HTTP content negotiation or HTML links.
Content Service

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Services in Cooperation with CrossRef
• http://crosscite.org/citeproc/
A Citation Formater which provides over 100 different formats
for citations.
• http://crosscite.org/cn/
With Content Negotiation it is possible to access different media
types of a registered object (machine-to-machine only).

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Links
• http://schema.datacite.org
Access to all versions of the DataCite metadata schema, with
documentation, schema definition, and examples.
• http://search.datacite.org
Search engine for all metadata stored by DataCite.
• http://oai.datacite.org
Datacite‘s OAI-PMH service which allows access to the metadata.
• http://data.datacite.org
DataCite Content Service exposes metadata using multiple formats.
• http://test.datacite.org
DataCite‘s test system includes all services, like MDS, Search, Content
Negotiation etc.

16. Thank you for your attention!