1. Comtrade SDMX
Overview

2. What is UN Comtrade?
United Nations Commodity Trade Statistics Database
Imports, Exports, Re-exports
Commodity by Trading Partner
Annual data
Value in US dollars
Net weight and secondary quantities
About 140 reporters per year (>90% of the World Trade)

3. Key elements Classifications and Commodity Codes Reporter Partner
Harmonized System
SITC
Reporter
Partner
Trade Flow
Year

4. Comtrade & SDMX
Comtrade was involved in early version of SDMX version 1.0
As one of the alignment projects
Comtrade was the first test case for SDMX Cross Sectional (data series)
Comtrade SDMX initially used for data exchange between UNSD and OECD

5. Comtrade SDMX (beta) Comtrade uses SDMX cross-sectional format.
Each commodity classification has a specific Key Family. Therefore, there are 6 key families: for HS2002, HS1996, HS1992, SITC Rev.3, SITC Rev.2, and SITC Rev.1 Explanatory notes are integrated with Comtrade SDMX.
This is a beta version. The SDMX structure can be modified.
Comtrade Web Services are available for limited users.

6. Key Families
Data series defined in SDMX Key Families element structure:Dimension
To define possible positions, fill the attributes crossSectionalAttachDataset/Group/Section/Observation

7. Example

8. Notes Time dimension must be on Group Level
Compare to SDMX TS, time dimension is on Observation Level
Schema must be created for each SDMX CS
Comtrade SDMX uses custom namespace uncs
Comtrade SDMX is available on the internet