Modelling the contents and structure of official statistics Or: How to design

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Modelling the contents and structure of official
statisticsOr How to design correct and
globally consistent SDMX Data Structure
DefinitionsOr Navigating in a space of
statistical surveys of societyOr Reality as a
statistical construction

• Bo Sundgren, Statistics Sweden
• ICES-III, Montreal, June 18-21, 2007

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Contents By Example (based on a simple generic
model)
Complex objects
Utilities
Actors
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UNESCO model version 1 (to be revised)
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Everything clickable
OBJECT
VARIABLE
Righthand click
Lefthand click

• Select
• object
• variable

• Retrieve metadata
• definition
• value set, classification
• questionnaire
• quality declaration
• survey documentation

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Propositions

• The statistical data/metadata model presented
  here is general and domain-independent. It will
  cover all kinds of data and metadata to be made
  publicly available on the Internet and to be
  exchanged between national statistical agencies
  and international organisations. This proposition
  has been verified in a number of cases. So far
  the proposition has not been falsified in any
  case.
• This generic model can be transformed in a
  systematic way into an SDMX-compliant generic
  model expressed in XML.
• Since cube models, as actually practiced in
  national statistical agencies and international
  organisations, differ slightly between themselves
  and cannot always be said to be standardised, we
  propose the transformation to take place in two
  steps
• Step1 Non-standardised cubes are transformed
  into normalised cubes as defined here.
• Step 2 Normalised cubes are transformed into
  standardised SDMX cubes (to be defined).