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Metadata Standards and Their Support of Data Management Needs

Metadata Standards and Their Support of Data Management Needs. Daniel W. Gillman Bureau of Labor Statistics Paul Johanis Statistics Canada. Overview. Terminology Theory ISO/IEC 11179 Statistical Data Corporate Metadata Repository Model Metadata Schemes XBRL; Neuch â tel; DDI; SDMX; CWM

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Metadata Standards and Their Support of Data Management Needs

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  1. Metadata Standards and Their Support of Data Management Needs Daniel W. Gillman Bureau of Labor Statistics Paul Johanis Statistics Canada METIS Work Session

  2. Overview • Terminology Theory • ISO/IEC 11179 • Statistical Data • Corporate Metadata Repository Model • Metadata Schemes • XBRL; Neuchâtel; DDI; SDMX; CWM • Integration • Conclusion METIS Work Session

  3. Terminology Theory • Property = something observed • Object = perceivable or conceivable • Characteristic = abstraction of properties of objects • Concept = unique combination of characteristics • Designation = association of sign with concept METIS Work Session

  4. Terminology Theory • Concepts • Intension = sum of characteristic • Extension = set of corresponding objects • General = 2 or more objects in extension • Designation = term (Example: man) • Individual = 1 object in extension • Designation = appelation (Example: Dan) METIS Work Session

  5. ISO/IEC 11179 • 2nd Edition Published (in 2005); 3rd Edition underway • Freely available on web • http://isotc.iso.org/livelink/livelink/fetch/2000/2489/Ittf_Home/PubliclyAvailableStandards.htm • See also • ISO/IEC TR 20943 (Achieving Content Consistency) • ISO/IEC 11404 (Language Independent Datatypes) • Future – ISO/IEC 20944 • Interoperability and Bindings METIS Work Session

  6. ISO/IEC 11179 • Object Class • “What is being counted here?” • Example – METIS 2006 attendees • Property • Characteristic of the object class • Example – country of birth • Data Element Concept := OC + P METIS Work Session

  7. ISO/IEC 11179 • Value Domain • What are the allowed values? • Example – ISO 3166-1 Country codes (2-alpha) • Data Element := DEC + VD METIS Work Session

  8. Statistical Data • Data • Population (concept) = Object Class • Characteristic (concept) = Property <11179> • Values (designation) = Value Domain • Micro-data • General concept • Macro-data • Individual concept METIS Work Session

  9. CMR • CMR – Corporate Metadata Repository Model • Extension of ISO/IEC 11179 • For statistical surveys • Sample • Questionnaire • Data sets • Products • Systems METIS Work Session

  10. Metadata Schemes • XBRL (extensible business reporting language) • DDI (data documentation initiative) • SDMX (statistical data and metadata exchange) • Neuchâtel Group (classification + variable models) • CWM (common warehouse metamodel) METIS Work Session

  11. Metadata Schemes • XBRL – XML for Financial Data and Metadata • Recording + Transferring • Instance documents based on “taxonomies” • Schema – element structure • Labels – reuse across languages and purposes • References – to legal or accounting standards • Presentation – rules for specifying hierarchy of elements • Calculations – rules for calculations between elements • Definitions – rules for other relationships between elements METIS Work Session

  12. Metadata Schemes • DDI (data documentation initiative) • Data archives, for codebooks • 5 chapters • Document; Study; File; Data; Other • Main concept – data set • Describes • Microdata • Tables METIS Work Session

  13. Metadata Schemes • SDMX (statistical data and metadata exchange) • BIS, ECB, IMF, World Bank, UN, Eurostat, OECD • Main concept – data or metadata structure definition • Scheme for defining data and metadata transfer structures • Describes • Macrodata • Time series METIS Work Session

  14. Metadata Schemes • Neuchâtel Group (classification + variable models) • Sweden, Norway, Netherlands, Switzerland, US • German IT company • Did include Denmark, Finland • Main concepts – classification, variable • Describes • Classifications, microdata METIS Work Session

  15. Metadata Schemes • CWM – Common Warehouse Metamodel • OMG – Object Management Group • Information supply chain = Survey life-cycle • Tool integration • Common metadata model framework • Map between tools • Share metadata • Common view of metadata METIS Work Session

  16. Integration Data Dissemination Data Dissemination Data Transfer between Organizations and Organizational Units Data Collection Data Collection DDI ISO11179/ CMR XBRL SDMX Database Interoperability CWM Thesauri/search resources METIS Work Session

  17. Integration METIS Work Session

  18. Conclusion • Metadata Constructs • Throughout survey life-cycle • Many linkages • Questions METIS Work Session

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