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Url,purl and doi






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Url,purl and doi Url,purl and doi Presentation Transcript

  • URL,PURL and DOI
    Shriram Pandey
    The LNM IIT, Jaipur
  • Background
    Resource Identification- A first step to gain access.
    -Book: ISBN, UPC
    Similar Identification system also require for the digital environment.
  • URL(Uniform Resource Locator)
    It is an address of the resource located anywhere over the Internet.
    Uniform: Unique
    Resource: Anything that has entity
    Identifier: An object that can act as a reference to something that has an identity
  • Component of URl
    Syntax: <scheme>:<scheme-specific-part>
    The scheme may be :
    ftp :File Transfer protocol
    http: Hypertext Transfer Protocol
    https: Hypertext Transfer Protocol Secured
    mailto: Electronic mail address
    telnet :Reference to interactive sessions
    File: Host-specific file names
    Example: http://www.suniv.ac.in
  • Problem Associated with URL
    URL are not persistence and resource can lost, if
    the server moves to a new computer
    the server moves to a new port on the same computer
    the name of the computer the server runs on changes
    the resource's name changes
    the resource moves to a new server
  • The Solutions
    A permanent URL which persistence.
    There are many solutions : PURL, Handle System, DOI etc.
    We shall cover the PURL and DOI in detail.
  • PURL
    PURL(Persistent Uniform Resource Locator)
    A project by OCLC
    Three Component :
    Resolver address
    Example: http://purl.oclc.org/SU/PG_DLIS
  • How PURL Work
  • Digital Object Identifier
    An identification system for intellectual property in the digital environment.
    Developed by the DOI foundation to provide a framework for managing intellectual content, link customers with publisher.
    Provides a persistent identification number to each resource registered with DOI registration agencies.
  • Component of DOI
    DOI Prefix:
    Two component: 10.<organization assigned number>
    DOI Suffix
    Identification for the entity, it may be a number, ISBN etc.
  • DOI Resolution
    Ensures persistence by resolving the DOI to a current associated value such as a URL;
    Resolution may be :
    Simple Resolution
    Multiple Resolution
  • Simple Resolution
  • Multiple Resolution
  • Benefits of DOI Systems
    Persistence, persistence, persistence!!!
    DOIs are easy to use. Simply click one or cut and paste it like you would a URL
    Called the “barcode for intellectual property”
    Multiple resolution capability leads to more options for researchers.