Constraint

Data Constraint or Metadata Constraint Overview

A SDMX Data or Metadata Constraint provides the ability to further restrict the allowable content of a Codelist in the context of a Data or Metadata Structure Definition, a Data or Metadata flow, a Provision or Metadata Agreement, or Data or Matadata Provider. Collectively these are termed as Constrainable Structures.

Structure Properties

Structure Type	Standard SDMX Structural Metadata Artefact
Maintainable	Yes
Identifiable	Yes
Item Scheme	No
SDMX Information Model Versions	3.0
URN - DataConstraint namespace	urn:sdmx:org.sdmx.infomodel.datastructure.DataConstraint

Context within the SDMX 3.0 Information Model

Usage

Constraints (DSDs) are used to ???????:

Each Dataflow references a single DSD which describes the structure of the dataset that the Dataflow represents.