How does CNRI's Handle system works How it can be used in a digital library How it is implemented in

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How does CNRI's Handle system works? How it can
be used in a digital library? How it is
implemented in DOI system?
By,Ramnishath.ANational Centre for Science and
InformationIndian Institute of Science,
Bangalore On 20th Feb 2004
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• Handle system
• One of the research program of CNRI Corporation
  for National Research Initiatives
• The Handle System is a distributed computer
  system which names digital objects and stores the
  names and the information that is needed to
  locate and access these objects via the Internet
• International Support (Unicode)
•  

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How to locate the owner of the telephone number
080-123456
Directory 1
Directory 2
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How to locate the owner of the telephone number
080-123456
Directory 1
Directory 2
15th cross MalleswaramBangalore
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X
How to locate the owner of the telephone number
080-123456
Directory 1
Directory 2
15th cross MalleswaramBangalore
HostelIISc.Bangalore
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X
How to locate the owner of the telephone number
080-123456
Directory 1
Link to a file IP address/path of the file
in that system
Directory 2
11th cross MalleswaramBangalore
HostelIISc.Bangalore
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X
How to locate the owner of the telephone number
080-123456
Directory 1
Link to a file IP address/path of the file
in that system
Directory 2
Web browser
11th cross MalleswaramBangalore
HostelIISc.Bangalore
link
user
Remote PC location 1
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X
How to locate the owner of the telephone number
080-123456
Directory 1
Link to a file IP address/path of the file
in that system
Directory 2
Web browser
11th cross MalleswaramBangalore
HostelIISc.Bangalore
link
X
user
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X
How to locate the owner of the telephone number
080-123456
Directory 1
link to a file a unique number IP
Address/path
Directory 2
11th cross MalleswaramBangalore
HostelIISc.Bangalore
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X
How to locate the owner of the telephone number
080-123456
Directory 1
link to a file a unique number IP
Address/path
Directory 2
11th cross MalleswaramBangalore
HostelIISc.Bangalore
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X
How to locate the owner of the telephone number
080-123456
Directory 1
link to a file a unique number IP
Address/path
Directory 2
11th cross MalleswaramBangalore
HostelIISc.Bangalore
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X
How to locate the owner of the telephone number
080-123456
Directory 1
Directory 2
11th cross MalleswaramBangalore
HostelIISc.Bangalore
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X
How to locate the owner of the telephone number
080-123456
Directory 1
Handle server
Handle system !
Directory 2
11th cross MalleswaramBangalore
HostelIISc.Bangalore
Handle resolver
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Web browser
link
Global handle server
Local handle server
user
Remote PC location 1
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Web browser
link
Global handler
Local handler
user
Remote PC location 2
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Web browser
link
Global handler
Local handler
user
Remote PC 2
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Web browser
link
metadata
Global handler
Local handler
user
Remote PC 2
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Handle Query
Give me all data associated with handle
10.1000/123.
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Resolution flow diagram
10.1000/123 URLhttp//www.abc.com
URLhttp//www.xyz.com
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The Global Handle Registry
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Structure of DOI number

• 10.1234/5678
• 10.2341/0--1 ? unicode
• 10.5678/978-0-7645-4889-4
• 10.1000/ISBN 0764548891
• 10.1234/Norman_presentation
• 10.2224/2003-1-29-CENDI-DOI

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• Who is using DOI now ?CrossRef
• Infrastructure for linking citations across
  publishers, full-scale implementation of the DOI.
• The publisher submits the record to the CrossRef
  metadata database (MDDB) in a strict XML-based
  DTD format.
• CrossRef then registers each article DOI and URL
  in a central DOI directory.
• If a publisher changes the location of an
  article, it need only update the URL for the
  article in one place with CrossRef.

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context-sensitive linking services
Open URL
A DOI link
Handle system
DOI proxy
URL
aware
DOI
Open URL
Metadata
Link resolver
Crossref
DOI
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Demo

• link to Multiple resolution
• How Crossref and Link resolver works ?

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Reference

• http//www.handle.net
• http//www.doi.org
• http//www.crossref.org
• http//www.sfxit.com
• http//www.indecs.org

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Presented by, Ramnishath.ANational Center for
Science Information,Indian Institute of Science,
Bangalore. On 20th Feb 2004
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