Structural Metadata - Overview

Structural metadata is the foundational layer of SDMX, defining the meaning, ownership, organisation, relationships, and constraints of the data being exchanged; enabling systems to validate, interpret, transform, govern, and meaningfully exchange statistical data between organisations.

sdmx-core supports SDMX structural metadata by providing a version-agnostic SDMX Information Model, high-performance read and write processing, validation, transformation, reference resolution, registry integration, and efficient memory management for large-scale metadata collections.

Example Codelist: Economic Indicators

Code	Name	Description
GDP	Gross Domestic Product	The total value of goods and services produced within an economy
CPI	Consumer Price Index	Measures changes in the price level of consumer goods and services
UNEMP	Unemployment Rate	Percentage of the labour force that is unemployed
IR	Interest Rate	The policy or market interest rate used in economic analysis
EXR	Exchange Rate	The value of one currency relative to another

Structural metadata defines the concepts, classifications, and rules that give data meaning and structure.