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XML Schema Version 1.37 Overview: Enhancements for BioCASE and CODATA/TDWG

This document presents an introduction to the XML Schema Version 1.37, initiated by CODATA and TDWG in June 2001 and adapted for BioCASE in June 2002. It emphasizes rich, extensible data format for organism names, locations, and temporal data while ensuring compatibility with existing standards. Key improvements include a shift from DTD to Schema for better data-centric structures, notable reductions in element sets, and refined annotation elements. The Schema serves to connect unit-oriented data across databases and is available on the TDWG website.

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XML Schema Version 1.37 Overview: Enhancements for BioCASE and CODATA/TDWG

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  1. CODATA / TDWG / BioCASEUnit Profile Introduction to The XML Schema Version 1.37 Neil Thomson, The Natural History Museum, London Campinas October 2002

  2. Origins • Initiated by CODATA/TDWG in June 2001 • Chosen for additional use by BioCASE in June 2002, rather than creating a separate profile • Based on ABCD, current version is called CTBUP v1.37 • Brief introduction followed by walkthrough in XMLSpy Campinas October 2002

  3. Principles maintained • Strong typing used • Meaningful element names used • Compatibility with existing standards • Rich data for “who / what / where / when” with emphasis on organism names, places and time • Extensible • Policy on optionality • Use of attributes Campinas October 2002

  4. Major changes • Conversion from DTD to Schema – better for data-centric documents and can use typing • Darwin Core 2 compatible • Removal of geology elements (for current use) • Reduction of element set • Recursion eliminated • Pruning e.g. of images and references • Addition of structured annotation elements Campinas October 2002

  5. STRUCTURED ANNOTATIONS FOR EACH ELEMENT <Created> <Author/> <Date/> <Comment/> </Created> <Changed> <Author/> <Date/> <Comment/> </Changed> <FullName/> <Audience>BioCASE</Audience> <Audience>CODATA TDWG</Audience> <Reviewer/> <ExistingStandards/> <Content/> <Examples/> <Comments/> <Rules/> <Notes/> Campinas October 2002

  6. The Schema will: • Deliver unit-oriented data from databases (sources) to web-based services that will integrate the data from different sources • Provide a semantic definition of the data items needed for that purpose • Require identification of access points, through which the data may be queried Campinas October 2002

  7. The Schema does not: • Serve to define databases • Include taxon-based information • Include ecological data, except for the description of a gathering site or observation site Campinas October 2002

  8. RfC - Request for Comment • Version 1.36 flattened into Excel file • 11 extracts forwarded to volunteers • Some suggestions incorporated into v1.37 for this meeting • Schema is available at the TDWG Website http://www.bgbm.fu-berlin.de/tdwg/CODATA/Schema/ Campinas October 2002

  9. Top-level structure Campinas October 2002

  10. Campinas October 2002

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