Persistence is a Virtue - The Diigo Meta page

• 04 Aug 08
  

  purl uuid guid urn uri identifier

  • Much of the value of online digital resources for scholarly  communication lies in enabling resources to be cited reliably with actionable  links over long periods of time
  • Names are a vital building block for the digital library. Names  are needed to identify digital objects, to register intellectual property in  digital objects, and to record changes of ownership. They are required for  citations, for information retrieval, and are used for links between objects.

  • There are three important practical aspects to persistent  identification of online resources:

     
     
    • Choice of an identifier system. (What to call the resources)
     
    • A system of resolution to map the identifier to the resource  identified. (How will users get the resources when the identifiers are used as  links?)
     
    • Maintenance of access to the resource through continued association  of the current location of the resource with the identifier. (How to make sure  that the links continue to work over time)
  • A URI can be further classified as a locator, a name, or both.  The term "Uniform Resource Locator" (URL) refers to the subset of URI that  identify resources via a representation of their primary access mechanism  (e.g., their network "location"), rather than identifying the resource by name  or by some other attribute(s) of that resource. The term "Uniform Resource  Name" (URN) refers to the subset of URI that are required to remain globally  unique and persistent even when the resource ceases to exist or becomes  unavailable.
  • RFC 2141 - URN  Syntax.
  • The  push for a "stronger" identifier than the URL, as it is currently used, is  supported by those in the digital library field who recognise that persistent  naming is the cornerstone of the architecture of an open distributed  library/archive system and by the publishing and rights management community  who need an absolutely watertight persistent identifier system to support  commercially oriented rights management and access systems
  • The Handle system is a distributed persistent naming system developed  for digital library applications.

  5 more annotations...

• 07 Jun 08
  

  Richard Davis

  Describing NAA's approach to persistence (PANDORA etc) by maintaining a URI-to-URL resolver

  persistent jisc-powr web archiving preservation

• 06 Sep 05
  

  Tony Hirst

  purl persistent URL

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