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Last modified by Helena K. on 2026/06/08 15:19
From version 14.1
edited by Helena K.
on 2026/06/04 13:40
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To version 9.6
edited by Helena K.
on 2026/06/03 14:31
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11 11  
12 12  = 1. Overview =
13 13  
14 +
14 14  [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.1 is a minor revision to the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.0 Standard which introduces a limited set of changes, which cover the following:
15 15  
16 16  **Information Model**
17 17  
18 18  * Support for [[Dataflows>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] to reference a subset of [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] from a [[Data Structure Definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]
19 -* Simplification to Data Constraints
20 -* Addition of Availability Constraints
20 +* Simplification to Data [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]]
21 +* Addition of Availability [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]]
21 21  
22 22  **Documentation**
23 23  
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46 46  
47 47  == 2.1 Removal of Advanced Release Calendar ==
48 48  
49 -The Data Constraint was simplified to become a cohesive structural [[artefact>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]] focussed solely on the restriction of values that can be reported. As part of this remodelling the Advanced [[Release Calendar>>doc:sdmx:Glossary 2\.1.Release policy - release calendar.WebHome]] was removed as it does not play a restrictive role.
50 +The Data [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] was simplified to become a cohesive structural [[artefact>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]] focussed solely on the restriction of values that can be reported. As part of this remodelling the Advanced [[Release Calendar>>doc:sdmx:Glossary 2\.1.Release policy - release calendar.WebHome]] was removed as it does not play a restrictive role.
50 50  
51 51  //Guidance for Implementors//
52 52  [[Reference Metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] reported against a [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] and / or [[Provision Agreement>>doc:sdmx:Glossary 2\.1.Provision agreement.WebHome]] can be used as an alternative to the Advanced [[Release Calendar>>doc:sdmx:Glossary 2\.1.Release policy - release calendar.WebHome]].
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62 62  
63 63  The changes to the information model support two distinct use cases:
64 64  
65 -1. Horizontally complex [[Data Structure Definitions>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] (DSDs)
66 -1. Additional cohesion to the Data Constraints model
66 +1. Horizontally complex [[Data Structure Definitions>>doc:Glossary.Data structure definition.WebHome]] (DSDs)
67 +1. Additional cohesion to the Data (% style="color:#e74c3c" %)[[Constraints>>doc:Glossary.Constraint.WebHome]](%%) model
67 67  
68 68  These changes are described in below.
69 69  
70 70  == 3.1 Horizontally Complex Data Structure Definitions ==
71 71  
72 -An explanation of this use case, with additional details can be found under Section 6 - Technical Notes, under heading ‘10.3 Dimension Constraint’.
73 +An explanation of this use case, with additional details can be found under Section 6 - Technical Notes, under heading ‘10.3 [[Dimension>>doc:Glossary.Dimension.WebHome]] (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%)’.
73 73  
74 74  The following changes to the model have been made to satisfy this use case.
75 75  
76 76  **Data Structure Definition**
77 77  
78 -The [[Data Structure Definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] has a new ‘evolving structure’ property, this is a Boolean property, when set to ‘true’ it indicates to the users of the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] that new [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] may be added without the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] undergoing a change to its major [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] number.
79 +The [[Data Structure Definition>>doc:Glossary.Data structure definition.WebHome]] has a new ‘evolving structure’ property, this is a Boolean property, when set to ‘true’ it indicates to the users of the [[DSD>>doc:Glossary.Data structure definition.WebHome]] that new [[Dimensions>>doc:Glossary.Dimension.WebHome]] may be added without the [[DSD>>doc:Glossary.Data structure definition.WebHome]] undergoing a change to its major (% style="color:#e74c3c" %)[[version>>doc:Glossary.Version.WebHome]](%%) number.
79 79  
80 80  **Dataflow**
81 81  
82 -The [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] has a new Dimension Constraint property, which is used to reference a subset of [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] which it uses from the referenced [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]].
83 +The [[Dataflow>>doc:Glossary.Dataflow.WebHome]] has a new [[Dimension>>doc:Glossary.Dimension.WebHome]] (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%) property, which is used to reference a subset of [[Dimensions>>doc:Glossary.Dimension.WebHome]] which it uses from the referenced [[DSD>>doc:Glossary.Data structure definition.WebHome]].
83 83  
84 -The Dimension Constraint fixes the [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] of the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] enabling the referenced [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] to have new [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] added without the need to change the major [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]] number.
85 +The [[Dimension>>doc:Glossary.Dimension.WebHome]] (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%) fixes the [[Dimensions>>doc:Glossary.Dimension.WebHome]] of the [[Dataflow>>doc:Glossary.Dataflow.WebHome]] enabling the referenced [[DSD>>doc:Glossary.Data structure definition.WebHome]] to have new [[Dimensions>>doc:Glossary.Dimension.WebHome]] added without the need to change the major (% style="color:#e74c3c" %)[[version>>doc:Glossary.Version.WebHome]](%%) number.
85 85  
86 -The Dimension Constraint property is only required if the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] sets the evolving structure property to true.
87 +The [[Dimension>>doc:Glossary.Dimension.WebHome]] (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%) property is only required if the [[DSD>>doc:Glossary.Data structure definition.WebHome]] sets the evolving structure property to true.
87 87  
88 88  == 3.2 Constraint Cohesion ==
89 89  
90 -The Constraint model in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.1 has been made more cohesive by separating the Data Constraint into two distinct structures; the Data Constraint which describes reporting restrictions, and the Availability Constraint, which describes data content from a [[data source>>doc:sdmx:Glossary 2\.1.Data source.WebHome]]. In [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.0 these distinctions were made using the ‘type’ property on a Data [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]].
91 +The (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%) model in [[SDMX>>doc:Glossary.Statistical data and metadata exchange.WebHome]] 3.1 has been made more cohesive by separating the Data (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%) into two distinct structures; the Data (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%) which describes reporting restrictions, and the Availability (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%), which describes data content from a [[data source>>doc:Glossary.Data source.WebHome]]. In [[SDMX>>doc:Glossary.Statistical data and metadata exchange.WebHome]] 3.0 these distinctions were made using the ‘type’ property on a Data (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%).
91 91  
92 -**Data Constraint**
93 +**Data [[Constraint>>doc:Glossary.Constraint.WebHome]]**
93 93  
94 -The Data Constraint has had the ‘type’ property removed; the Data Constraint in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.1 is always used to describe restrictions on content for data reporting purposes.
95 +The Data (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%) has had the ‘type’ property removed; the Data (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%) in [[SDMX>>doc:Glossary.Statistical data and metadata exchange.WebHome]] 3.1 is always used to describe restrictions on content for data reporting purposes.
95 95  
96 -The attachment of the Data Constraint in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.0 included [[Data Sources>>doc:sdmx:Glossary 2\.1.Data source.WebHome]], in [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] 3.1 these attachments have been removed as these are not relevant for restricting reported data.
97 +The attachment of the Data (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%) in [[SDMX>>doc:Glossary.Statistical data and metadata exchange.WebHome]] 3.0 included [[Data Sources>>doc:Glossary.Data source.WebHome]], in [[SDMX>>doc:Glossary.Statistical data and metadata exchange.WebHome]] 3.1 these attachments have been removed as these are not relevant for restricting reported data.
97 97  
98 -**Availability Constraint**
99 +**Availability [[Constraint>>doc:Glossary.Constraint.WebHome]]**
99 99  
100 -The Availability Constraint is a new Structure introduced to describe data that exists, it is generated in the response to the Availability REST API. It is not a maintained structure, and as such has no [[maintenance agency>>doc:sdmx:Glossary 2\.1.Maintenance agency.WebHome]], identity or [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]].
101 +The Availability (% style="color:#e74c3c" %)[[Constraint>>doc:Glossary.Constraint.WebHome]](%%) is a new Structure introduced to describe data that exists, it is generated in the response to the Availability REST API. It is not a maintained structure, and as such has no [[maintenance agency>>doc:Glossary.Maintenance agency.WebHome]], identity or (% style="color:#e74c3c" %)[[version>>doc:Glossary.Version.WebHome]]
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