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ISO/TC 211 Workshop on registry Reston, Sept 2000

ISO/TC 211 Workshop on registry Reston, Sept 2000. Codelist and multi-lingual free text metadata elements ( in response to resolution 133) C. Douglas O’Brien, Yves Hudon. Resolution 133- Study of the use of registry for elements.

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ISO/TC 211 Workshop on registry Reston, Sept 2000

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  1. ISO/TC 211 Workshop on registryReston, Sept 2000 Codelist and multi-lingual free text metadata elements (in response to resolution 133) C. Douglas O’Brien, Yves Hudon

  2. Resolution 133- Study of the use of registry for elements • ISO/TC 211 requests ... in preparation for a workshop to be held in connection with the next plenary meeting, … • The issue of code lists and multi-lingual free text shall also be addressed in the workshop ...

  3. What is a codelist? • value domain: A set of permissible values(ISO 11179-3) • Example: months of the year • codelist: A value domain including a code for each permissible value.

  4. What is a codelist? Example 01 January 07 July 02 February 08 August 03 March 09 September 04 April 10 October 05 May 11 November 06 June 12 December

  5. Codelists: no longer an issue Concept already implemented in ISO 19115 Metadata • 33 codelists in ISO 19115 CD3 (including references to other ISO standards - e.g. language code) • Possibly two more required in 19115 to complete the standard.

  6. Multi-languages in Free Text Metadata Element • Many countries have more than one official language • There is a strong user requirement to know the language that the free text is written in • There is also a requirement to not burden countries that use only one language • This must be handled in a standardized manner for data interoperability internationally • The impact on ISO 19115 MUST be minimized

  7. Multi-languages in Free Text Metadata Element • A general specification already exists to indicate the language used in an entire metadata file (ref. ISO 19115 CD3) • Metadata element “languageCode” from “MD_Metadata” • definition: “language used for documenting metadata”

  8. Multi-languages in Free Text Metadata Element • However ISO 19115 needs to permit a language(s) other than the one specified for the complete metadata file for documenting a specific free text metadata element

  9. Permitting more than one language in Free Text • The mechanism can’t occur only at the encoding level because there will possibly be different ways to encode. • The mechanism can’t be only delimiters because there is a need to describe which language is used, and building a structure out of delimiters defeats the advantages of modeling.

  10. Permitting more than one language in Free Text • Proposal: • free text metadata element could be handled as “Multiple Occurrences” (ie “Maximum occurrence = N”) • Multiple occurrences for metadata elements already exist in ISO 19115 • 424 metadata entities and metadata elements • 101 (24%) have “Maximum occurrence = N”

  11. Impacts to ISO 19115? • Replace all “free text” elements in the domain by MD_freeText • Add a new metadata entity • MD_freeText, Mandatory, occurrence=1 • group, Mandatory, occurrence=N • languageCode, optional, occurrence=1 • countryCode, optional, occurrence=1 • description, mandatory, occurrence=1

  12. Impacts to ISO 19115? • Add one structure for MD_freeText • Change one designator “Free text” to “MD_freeText” • MINIMUM IMPACT

  13. Summary • Multi-languages in free text metadata element • A practical approach is proposed to satisfy a strong user requirement and to improve data interoperability • No obligation to use multi-languages in free text elements • Minor impacts to ISO 19115 • Codelists: no longer an issue

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