Content Constraint

Overview

Content Constraints define restrictions on Codelists or Series for Data Reporting.

Structure Properties

Structure Type	Standard SDMX Structural Metadata Artefact
Maintainable	Yes
Identifiable	Yes
Item Scheme	No
SDMX Information Model Versions	1.0, 2.0, 2.1
URN - ConceptScheme namespace	urn:sdmx:org.sdmx.infomodel.conceptscheme.ConceptScheme
URN - concept namespace	urn:sdmx:org.sdmx.infomodel.concept.Concept

Context within the SDMX 2.1 Information Model

The schematic illustrates the core artifacts of the SDMX 2.1 Information Model, and how Content Constraints fit in.

Usage

Constraints can be applied to Dataflows, Data Providers or Provision Agreements in order to restrict the data being validated or converted.

Note that regardless of the artifact to which the Constraint is associated, it is constraining the contents of code lists in the DSD to which the constrained object is related.

The Constraint can be of one of two types:

• Content constraint
• Attachable constraint
  

The attachable constraint is used to define “cube slices” which identify sub sets of data in terms of series keys or dimension values. The purpose of this is to enable 1metadata to be attached to the constraint, and thereby to the cube slices defined in the Constraint. The metadata can be attached via the “reference metadata” mechanism – MSD and Metadata Set – or via a Group in the DSD.

Conventions

Content Constraint IDs IDs are conventionally uppercase using underscores '_' as separators if required. Examples:

Agency	Content Constraint ID	Constrained Structure	SDMX-ML
ESTAT	CR_HICP_AP_A	HICP_AP_A[2.0]	[ https://registry.sdmx.org/ws/public/sdmxapi/rest/contentconstraint/UIS/CR_EDUCAT_CLASS_A/1.0 SDMX-ML]
UIS	CR_EDUCAT_CLASS_A	EDUCAT_CLASS_A[1.0]	[ https://registry.sdmx.org/ws/public/sdmxapi/rest/contentconstraint/UIS/CR_EDUCAT_CLASS_A/1.0 SDMX-ML]
WB	GHA	GHA	[ https://demo.metadatatechnology.com/FusionRegistry/ws/public/sdmxapi/rest/contentconstraint/WB/GHA/1.0 SDMX-ML]

You can seem more examples and information on Identities in this article.