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SDMX 5 Modelling a statistical domain
UN/FAO - Erik van IngenAbuja, Nigeria, 13-14 May 2015
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•Agree on exchange needs
•Define the Concept Scheme
•Code the Concept Scheme
•Define a DSD Matrix
•Optimise the DSD Matrix
•Create SDMX Artefacts
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agree on data exchange needs
list Dataflows to be covered by SDMX
One Dataflow per data exchange need (e.g. transmission table)
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define the Concept Scheme
list all Concepts needed in any Dataflow
place all of the Concepts required in a single Concept Scheme
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code the Concepts
add default representations to Concepts drawing on existing:
cross-domain Code Lists
existing shared Code Lists
new Code Lists based on existing classifications
new Code Lists following the SDMX coding guidelines
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define a DSD Matrix
put the Dataflows in relation to the Concept Scheme:
which Concept is used in which Dataflow?
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DSD Matrix
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optimise the DSD Matrix
One DSD for each Dataflow with only the Dimensions needed for the respective
Dataflow
A single DSD covering both Dataflows, where the code
reported for Dimensions not needed are fixed to a single
code for use with that specific Dataflow
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Option 1
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option 2
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optimise the DSD Matrix
fill blanks in the matrix with default codes as far as possible from statistical perspective
to reduce the number of DSDs, you may fix a Dimension to a single Code value for use in a Dataflow
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generic example
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create SDMX Artefacts
Derive DSDs from the matrix
1 Concept Scheme
1 DSD for each set of dimensionality
1 Dataflow per exchange need
1 Cube Region Constraint per Dataflow
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DSD matrix in context
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architectural scenarios
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thank you