Unit 1: Introduction to Transcoding Data

In this unit, we’ll explain how SDMX supports data management within the statistical ecosystem.

Data and statistics in a statistical ecosystem

Throughout their lifecycle, data are subjected to many operations and transformations as they are aggregated, summarised, analysed, and customised for a wide range of outputs.

In relation to this, data are often collected at a granular level and disseminated at an aggregate level to facilitate key messaging and understanding. In addition, data are repackaged according to the requirements of various international actors and projects, including BIS, OECD, IMF, ECB, Eurostat, World Bank, SDGs, UN Agencies, and many more.

As such, it is common that the same data needs to be described (structural model) in different ways for various processes and actors.

Data systems within a statistical ecosystem

National and International statistical systems are constantly evolving and in a state of flux. Therefore, SDMX-compliant data, tools, and processes need to interoperate with other non-SDMX systems and tools and with data modelled in different ways.

It is often necessary to have a bridging strategy to facilitate implementing SDMX in some process areas and data domains while continuing business-as-usual elsewhere in the statistical system.

One important capability to support automation and data quality is the ability to codify these interconnections and transcode data from one data model to another as they move through the system. SDMX provides these capabilities in the form of structure maps.

Use case examples

SDMX assists in a variety of use case examples. There are capabilities in the SDMX standard and open source SDMX tools which support these use cases.

Select each use case example to learn more.

Use templates

Use templates
Adopt SDMX XLSX templates and the benefits that they offer and then transcode the data to a model supported by existing production systems.

Transcode existing data

Transcode existing data
With SDMX, easily transcode existing production data according to the requirements of data partners, such as SDGs and other reporting agencies, in a straightforward and automated manner.

Transcode to another standard

Transcode to another standard
With SDMX, transcode production data modelled according to one coding system (e.g., National Education System, Internal country coding) to another standard (e.g. ISCED, ISO3, M49) for collection, reporting, dissemination, or data production purposes.

Use transcoded data

Use transcoded data
Collect and produce statistics in the traditional manner and then transcode them into SDMX format and according to the SDMX data model and use this transcoded data in SDMX-enabled processes and tools.

SDMX capabilities

The SDMX method uses SDMX structure maps and SDMX representation maps along with a tool, such as the FMR to implement transcodings required in the various use cases.

The FMR transformation feature supports:

  • Testing the transcoding to ensure the expected results are realised
  • Transcoding the data interactively using the FMR User Interface (UI)
  • Transcoding the data in an automated manner using the FMR transformation web service (API)

What do you know?

Now that you’ve completed our introduction, try this.

Which of the following are considered SDMX capabilities?

Select all that apply and then select Submit.

Coming next

In the next unit, you’ll learn about transcoding data and the various types of mappings typically used.

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