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Deconstructing Cataloging A Web Services Approach to Bibliographic Control Thomas Hickey.

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Presentation on theme: "Deconstructing Cataloging A Web Services Approach to Bibliographic Control Thomas Hickey."— Presentation transcript:

1 Deconstructing Cataloging A Web Services Approach to Bibliographic Control Thomas Hickey

2 T. Hickey Access 2002 2 What is Deconstruction? Allowing access to what are now monolithic systems Do it using standard protocols

3 T. Hickey Access 2002 3 Why? Metadata being created in many places Even within libraries –Digitization projects seldom involve cataloguers –MARC21 isnt used

4 T. Hickey Access 2002 4 Why Not? How things work now –Tech processing departments –Books, serials Limitations –MARC21 –Cataloguers –Integrated library systems

5 T. Hickey Access 2002 5 How could we do it differently? Deconstruct integrated systems Expose the pieces with Web services Move metadata with standard protocols Goal: use Web services to build new, flexible systems create metadata anywhere

6 T. Hickey Access 2002 6 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

7 T. Hickey Access 2002 7 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 cgi-zoek/

8 T. Hickey Access 2002 8 REST: OAI-PMH Now in version 2.0 Allows synchronization of databases Other services can be layered –ODL: Open Digital Libraries –XTCat name authority service

9 T. Hickey Access 2002 9 SOAP is more complex Simple Object Access Protocol Z39.50 as a SOAP service: SRW – /wsdl/zing_srw_binding.wsdl /wsdl/zing_srw_binding.wsdl

10 T. Hickey Access 2002 10 What Could be Deconstructed? Classification services Name authority services Catalogue subsets Search (via SRU/SRW) Holdings Duplicate resolution/FRBR Rights management

11 T. Hickey Access 2002 11 An Example: ePrints UK Records harvested from archives Web services to enhance metadata

12 T. Hickey Access 2002 12 Institutional e-print archives Non-institutional e-print archives Personal e-print archives Subject Classification Service Name Authority Service Citation Analysis Service RDN Gateway/portal Service RDN Gateway/portal Service RDN Gateway/portal Service OAI-PMH SOAP HTTP Z39.50 e-Prints UK

13 T. Hickey Access 2002 13 Web Services for ePrints UK Personal name authorities Subject classification Citation analysis

14 T. Hickey Access 2002 14 Subject Classification Service Receives metadata, full text Sends back –List of DDC numbers, captions –Subject headings

15 T. Hickey Access 2002 15 Classification Service Document Text Metadata PDF Document e-Prints UK Classification Service Classification Metadata

16 T. Hickey Access 2002 16 Name Authority Service Receives metadata record, full text For each name, sends back –Authorized form –URI representing persona If in interactive mode: –List of possibilities

17 T. Hickey Access 2002 17 Example: XTCat Experimental Theses Catalog Union catalog of thesis and dissertation metadata

18 T. Hickey Access 2002 18 Example: XTCat Records extracted from WorldCat Available via OAI-PMH –Separate set for electronic theses We harvest from other repositories Integrate with existing records Allow re-harvesting (e.g. by VTLS)

19 T. Hickey Access 2002 19 FRBR Services Send in list of metadata records –Get back FRBRized list –Get back Uri's to works

20 T. Hickey Access 2002 20 Other Considerations More complicated flows Services in records Getting Google in the picture

21 T. Hickey Access 2002 21 Two-Way flows Union catalog could harvest –Integration done for union catalog Local systems could harvest –Use enhanced record All movement with OAI-PMH

22 T. Hickey Access 2002 22 Embedding Services in Records Name authority Library –Providers –Requests Records stand on their own Allow branding

23 T. Hickey Access 2002 23 Allowing General Web Harvesting HTML Tree Services lead back to libraries

24 T. Hickey Access 2002 24 Questions?

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