WORKSHOP 28TH/29TH APRIL 2015

Persistent Identifiers (PIDs)

Christine Staiger Christine.staiger@surfsara.nl

WORKSHOP 28TH/29TH APRIL 2015

Persistent Identifiers (PIDs)

WORKSHOP 28TH/29TH APRIL 2015

Persistent Identifiers (PIDs)

HANDLES AND B2HANDLE

Persistent Identifiers (PIDs)

2

What do we want from data? •  Findable–Easytofindbybothhumansandcomputersystems

àMetadata•  Accessible–Storedforlongterm,accessedand/ordownloadedwithwell-definedlicenseandaccess

•  Interoperable–Readytobecombinedwithotherdatasetsbyhumansaswellascomputersystems;

•  Reusable–Readytobeusedforfutureresearchandtobeprocessedfurtherusingcomputa@onalmethods.

à Referencedataandiden@fydataà  Infrastructureshouldtakecareofsomeaspects

3

Digital Object (DO)

Data

PID

Metadata

•  Persistent Identifier: reference and identify object, either metadata or data object

•  Synchronise PID, Data and Metadata during creation,

maintenance, update and deletion of a digital object!

4

Pro: PIDs are static

Data2 Data

1

Data4

Data3

PID 1 PID 2 PID 3 PID 4

World of data infrastructure

5

PID systems and issuing authorities

EPIC DOI HANDLE

GDWG

SURFsara

CSC

grnet

DataCite

CrossRef

DONA Foundation

6

PID systems and issuing authorities

•  URN:NBN(E.g.Archiveresourceiden>fier)•  Policies:PIDispersistentandthedataitisdereferencedto•  Wantstobeindependentfromtransferprotocols

àCurrentlyalliden@fiersstartwithh"pMightchangeinthefuture

•  DOI(4TU.datacentrum)•  Policies:PIDispersistent,datanot•  Wellacceptedamongstresearchers•  Basedonthehandlesystem•  Datacite,Crossrefareprefixissuingauthori@es

•  Both:•  PIDspointtoalandingpage,notthefileitself•  Userneedstoprovideaminimumsetofmetadata•  Tayloredtowardstheneedsofrepositories

7

PID systems and issuing authorities

•  ePIC(EuropeanPIDconsor>um)•  Policies:PIDispersistent,dataisnot•  PIDscanpointtoanything•  Basedonthehandlesystem•  GDWGismainprefixissuingauthority

•  DONAfounda>on(www.dona.net)•  Maintainsglobalhandleregistry•  Partners:

•  CNRI(developerofthehandlesystem)•  GDWG(mainpartnerinePIC)•  Interna@onalDOIfounda@on(IDF)

8

The Handle system

• Puretechnology!• Metadata:Youcancreateyourownkeyword-valuepairsandstorethemwiththePID• Policies:Doityourself!

handlescanpointtoanythinghandlescanalsoberemoved,theyarenotpersepersistent…

à Greatflexibilityforadjus@ngthesystemtowardsyourownneedsà Youhavetoimplememnteverythingonyourownà Youhavetothinkevenmorecarefullyabouthowyouwantto

facilitatedatamanagement

9

Step-by-Step: B2HANDLE

Demonstra>on:• RegisterdatawithaHandle• GETthedetailsofaHandle• ModifyaHandlerecord• LinktwofilesonPIDlevelCreatedPIDswillappearhere:h[p://hdl.handle.net/21.T12995/PID-Training