URL,PURL and DOI Shriram Pandey The LNM IIT, Jaipur
Background Resource Identification- A first step to gain access. -Book: ISBN, UPC -Periodicals/Journals-ISSN 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 : Protocol Resolver address Name 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
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.