V Link Open Ur Lina Nutshell

OpenURL in a nutshell Stefaan Renard University Library Vrije Universiteit Brussel

Contents
Problem and solution
History
Version
What is an OpenURL
Inbound OpenURL links
The OpenURL QUERY
Outbound database specific links
Supported genres

Problem and solution
Given (bibliographic) metadata, how does one generate relevant links for it and present them to the end-user?
Solution: a link generator that uses the OpenURL syntax

History
The OpenURL is based upon the SFX research work of Herbert Van de Sompel and his team (Ghent, Cornell, Los Alamos)
The OpenURL architecture generalizes the SFX research via an open standard to be used by interested parties
V-link is based upon the OpenURL

Version
NISO standarized OpenURL: ANSI/NISO Z39.88 - The OpenURL Framework for Context-Sensitive Services
V-link supports version 0.1, 1.0 SAP and hybrids of the OpenURL

What is an OpenURL
The OpenURL is a syntax to create web-transportable packages of metadata and/or identifiers about an information object (a book, journal, article…).
It is a query string with key/value pairs

Inbound OpenURL links
BASE-URL is the internet address of the OpenURL link generator e.g.: http://bib.be/vlink
QUERY string contains (bibliographical) metadata: e.g.: genre=book&isbn=0123456789
OpenURL e.g.: http://bib.be/vlink?genre=book&isbn=0123456789
OpenURL = BASE-URL '?' QUERY

The OpenURL QUERY
By value transfer:
metadata about a certain object (book, journal, cd, movie…) is physically delivered to V- link
with the metadata V-link creates context-sensitive links
By reference transfer:
a pointer/identifier (digital object identifier, pmid, local identifiers…) to the information is delivered. V- link must resolve the pointer in order to get hold of the actual information
V-link fetches the record and parses the metadata
with the metadata V-link creates context-sensitive links

By Value transfer OpenURL source V-link targets OpenURL (inbound link) URLs (outbound links)   

By reference transfer OpenURL source V-link targets OpenURL URLs Metadata source      Fetch via OAI-PMH, Z39.50, HTTP etc. identification number metadata DOI, pmid, OAI…

By reference example OAI-PMH

marc21 xml from VubisSmart

Outbound database specific links
The metadata received via the OpenURL is used to generate deep links to V-link targets
The deep links are most of the time database specific URLs: e.g. ISBN link to Amazon.com (isbn=1565925777) http://www.amazon.com/exec/obidos/ASIN/1565925777/
Some provider do support OpenURL for outbound linking: e.g. Springer link http://www.springerlink.com/openurl.asp?genre=journal&issn=0942-8925

Supported genres
OpenURL genres:
biased on scholarly material
article, book, bookitem, conference, journal, preprint, proceeding
V-link genres:
extra private genres
vlink-audio, vlink-game, vlink-movie, vlink-ticker, vlink-track, vlink-unknown

V-link flow WebOpac (local OpenURL source) BD Book V -link (local) Menu … Amazon Amazon (external OpenURL target) Book Amazon 1 2 3

http://www.vvbad.be	13
http://vvbad.wieni.be	4
http://www.slideshare.net	1
http://oud.vvbad.be	1

V Link Open Ur Lina Nutshell

by Vlaamse Vereniging voor Bibliotheek, Archief & Documentatie vzw on Jan 29, 2010

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