Outline
  • Survey life cycle and the IMDB
  • IMDB model
   –Data dimension model
   –Business dimension model
   –Questionnaire model
  • Registration
  • Classification of administered items
  • Use of metadata in the statistical system
  Role of the IMDB
  • Information management – interpretability of 
   Statistics Canada’s 590+ current surveys
  • Assist in coherence of the data
  • Promote knowledge sharing across STC and 
   with external users
  • Preserve corporate memory
  • Promote reuse of our metadata assets 
             IMDB in the survey life cycle
             IMDB in the survey life cycle
                                        Data Warehouses 
                 Operations         Quality          Analysis      Dissemination
                Management         Assurance
        IMDB                               Metadata                    IMDB
     Design       Collect        Edit       Estimate     Tabulate      Publish     Archive
                 Operational       Registers         Survey        Administrative
                    Data                              Data             Data
                                     Operational Data Stores
      IMDB metadata model
      •  Corporate Metadata Repository (CMR), which is an  
         extension of ISO/IEC 11179 Metadata Registries
          – Statistical surveys
          – Sample
          – Questionnaire
          – Data sets
          – Products
          – Systems
      •  IMDB – data dimension, business dimension, 
         questionnaire model, administration and documents 
         model
    Data dimension model – ISO/IEC 11179
                      Data Element
                   Data Element Concept
                      Object Class
                                        Survey 
                       Property         variable
                    Conceptual Domain
                      Value Domain