VisualCat: Cataloguing with XML, RDF, FRBR & Z39.50

1. VisualCat:Cataloguing with XML, RDF, FRBR & Z39.50 NORD I&D 2001 Poul Henrik Jørgensen, mailto:phj@dbc.dk

2. Background • Danish national bibliography maintained and operated by Danish Bibliographic Centre www.dbc.dk • VisualCat system developed by Portia www.portia.dk • British Library and Italian National Libraries use VisualCat in ONE-2 project www.one-2.org Poul Henrik Jørgensen May 2001

3. Requirements • Stand-alone cataloguing system supporting Z39.50 union catalogue profile • Simple to use for occasional cataloguers and effective tool for experienced staff • Easy customisation of user-interface, record formats and validation rules • Full UNICODE support • Based on open standards • Utilise windows/NT infrastructure tools Poul Henrik Jørgensen May 2001

4. Features • Z39.50 configured by ExplainLite XML data • MARC formats handled by XML schemas • MARC editing handled with DHTML and CSS • MARC validation by XML schemas and XSL • Context sensitive help via URL & web • Editing arbitrary scripts in UNICODE • Z39.50 search, retrieval & update • Authority control managed by RDF schemas for IFLA FRBR – or any other ontology Poul Henrik Jørgensen May 2001

5. Information Flow Z-Server Search Z39.50 VisualCat Z39.50 Z-Server Update MS RDS/ADO XML/RDF Database Poul Henrik Jørgensen May 2001

6. XML Schemas for MARC • Separate XML Element types for each combination of MARC Field & Sub field • danMARC2 XML Schema by DBC & Portia • 164 MARC fields and 1189 sub fields • XSL Style sheets for semantic validation • MARC21 Schema by British Library & Portia • Derived from MARC21 DTD from LC • UNIMARC Schema by Italian National Library & Portia • Based on Italian SBN specifications Poul Henrik Jørgensen May 2001

7. MARC21 XML Schema Poul Henrik Jørgensen May 2001

8. Z39.50 Configuration • Dynamic configuration by ExplainLite XML structure from ONE-2 Project • Target URL, Databases, Search attributes including names, Element Sets, Record syntaxes • Search, Retrieve, Scan & Update Poul Henrik Jørgensen May 2001

9. ExplainLite in VisualCat Poul Henrik Jørgensen May 2001

10. Search & Retrieval Poul Henrik Jørgensen May 2001

11. Editing functions • Insert fields and sub fields directly • Edit fields and sub fields directly • Required fields are added to imported records automatically • Empty fields are trimmed automatically • Lists of permitted fields, sub fields and values • Links to context-sensitive help via Web • Records validated for syntax and structure Poul Henrik Jørgensen May 2001

12. Forms based Editing Poul Henrik Jørgensen May 2001

13. Line-format Editing Poul Henrik Jørgensen May 2001

14. Authority Control • RDF schema defines the semantic relationships between classes and properties • Authority control data can be described in terms of FRBR entities and relations • VisualCat represents authority data and relations by means of general RDF structures in a database • Other metadata standards, e.G. Dublin core, may also be used Poul Henrik Jørgensen May 2001

15. RDF Schema for FRBR Poul Henrik Jørgensen May 2001

16. FRBR RDF graph Poul Henrik Jørgensen May 2001

17. Select FRBR Object type Poul Henrik Jørgensen May 2001

18. Search Attribute values Poul Henrik Jørgensen May 2001

19. Attributes & Relations Poul Henrik Jørgensen May 2001

20. Related Objects Poul Henrik Jørgensen May 2001

21. Summary • XML schemas used to validate different MARC formats • Internally all MARC data are XML & RDF • Z39.50 configuration by ExplainLite XML • Z39.50 search, retrieval, scan & update • User interface by CSS and DHTML • Different metadata including IFLA FRBR & DC handled by RDF authority database, Poul Henrik Jørgensen May 2001