1 / 23

Web Services for Digital Library Construction

This workshop, held in June 2003, delves into the pivotal role of Web Services in the construction and enhancement of digital libraries. Participants explored the essentials of machine-to-machine communication via standard web protocols such as XML and HTTP, alongside various approaches like REST and SOAP. Sessions covered crucial aspects, including registration, search, resolution, navigation, decomposition, enhancement, and transformation services, while also showcasing practical examples like the OpenURL Registry and the XISBN service. Insights into metadata standards and authority control underscore the session's relevance.

odette
Download Presentation

Web Services for Digital Library Construction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Web Services forDigital Library Construction T. Hickey Indo-US Workshop June 2003

  2. What are Web Services? • Machine-to-machine communication • Run over standard Web protocols • XML syntax, HTTP packaging • Several approaches • REST • Representational State Transfer • SOAP • Simple Object Access Protocol

  3. REST • REST is simplest • Send an HTTP request • Get back a response (XML, HTML) • Examples • Web browser • OpenURL • Z39.50 as a Web service: SRU http://sfx.bath.ac.uk/sfxmenu?genre=book&isbn=1234-5678 http://www.kb.nl/ cgi-zoek/srw.pl?query=test&maxRec=10&recSchema=dc_record

  4. SOAP is more complex • Simple Object Access Protocol • Z39.50 as a SOAP service: SRW • http://www.loc.gov/z3950/agency/zing/srwu/wsdl/zing_srw_binding.wsdl • WSDL • UDDI

  5. A set of Web services for the digital library • Register • Search • Resolve • Navigate • Decompose • Enhance • Transform Skip to examples

  6. Registration Services • Metadata about metadata • Dublin Core extensions • Digital format descriptions • Metadata about objects • Books • Web resources • Metadata about agents • People • Institutions

  7. Search Services • Go from data to links • Name to preferred form • Search terms to record list

  8. Resolution Services • From links to data • Record numbers to records • Controlled names to name metadata • Class number to textual description

  9. Navigation Services • Movement within hierarchies • Classification, e.g. DDC • FRBR (work, expression, manifestation, item) • General network movement • Link selection and following

  10. Decomposition Services • DDC Numbers • Names within a list • Citations within a paper • Structure of a document • Letters within an image

  11. Enhancement Services • Normalization • Linkage to registered forms • Addition of DDC numbers • Authority control on agents • Content augmentation • Add information to a brief record from a matching longer record

  12. Transformation Services • Syntax translation • MARC21 to MARC XML • Semantic translation • Qualified Dublin Core to MARC21 • Library of Congress SH to FAST • Content translation • English to French?

  13. Examples of Web Services • XISBN service • Maps ISBNs to ISBNs • OpenURL Registry • Provides names and definitions for OpenURL services • GSAFD Thesaurus

  14. The XISBN Web Service Amazon FRBRized ISBN Server User Library

  15. On Amazon

  16. Cornell University

  17. OpenURL Registry • OAI-PMH Registry • http://purl.org/openurl/ • OAI implies XML delivered • But, stylesheets can produce • HTML display • Web browser user interface

  18. GSAFD as a test case • Enhanced subject authority records for genre terms are now available via the OAICat framework. This development is a result of the combined efforts of the OAICat project and the Terminology Services project. The enhanced authority file is a version of the MARC 21 authority records for GSAFD genre terms. The enhanced version of the file has the following features: • The content of the file is MARC XML • Established terms in the file are accessible via a URL • Established terms in the file are mapped to equivalent Library of Congress Subject Headings (lcsh) and Library of Congress subject headings: Annotated Card Program (lcshac) (i.e., LC Children’s heading) • Authority records can be displayed in MARC or in a thesaurus-style display • The file is also accessible via SRW/SRU under the Zthes protocol

More Related