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Last modified by Artur on 2025/09/13 19:50
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edited by Helena
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To version 5.1
edited by Artur
on 2025/07/14 10:19
Change comment: Imported from XAR

Summary

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1 -SDMX 3.1 Standards. Section 1. Summary of major changes and new functionality
1 +SDMX 3.1 Standards. Section 1. Summary of Major Changes and New Functionality
Author
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1 -xwiki:XWiki.helena
1 +xwiki:XWiki.arturkryazhev
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1 +Artefact|Data source|Data structure definition|Dataflow|Dimension|Maintenance agency|Provision agreement|Reference metadata|Release policy - release calendar|Statistical data and metadata exchange
Content
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11 11  
12 12  = 1. Overview =
13 13  
14 -SDMX 3.1 is a minor revision to the SDMX 3.0 Standard which introduces a limited set of changes, which cover the following:
14 +[[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] 3.1 is a minor revision to the [[SDMX>>doc:sdmx:Glossary.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 -* Support for Dataflows to reference a subset of Dimensions from a Data Structure Definition
19 -* Simplification to Data Constraints
20 -* Addition of Availability Constraints
18 +* Support for [[Dataflows>>doc:sdmx:Glossary.Dataflow.WebHome]] to reference a subset of [[Dimensions>>doc:sdmx:Glossary.Dimension.WebHome]] from a [[Data Structure Definition>>doc:sdmx:Glossary.Data structure definition.WebHome]]
19 +* Simplification to Data (% style="color:#e74c3c" %)[[Constraints>>doc:sdmx:Glossary.Constraint.WebHome]]
20 +* Addition of Availability (% style="color:#e74c3c" %)[[Constraints>>doc:sdmx:Glossary.Constraint.WebHome]]
21 21  
22 22  **Documentation**
23 23  
24 -Registering Reference Metadata removed from documentation, to align with XML Registration object which is unable to reference a Metadata Provision, and REST API which is unable to query for registered reference metadata sources.
24 +Registering [[Reference Metadata>>doc:sdmx:Glossary.Reference metadata.WebHome]] removed from documentation, to align with XML Registration object which is unable to reference a Metadata Provision, and REST API which is unable to query for registered [[reference metadata>>doc:sdmx:Glossary.Reference metadata.WebHome]] sources.
25 25  
26 26  **Breaking Changes**
27 27  
28 -* Remove version property on Categorisation
29 -* Removal of Advanced Release Calendar
28 +* Remove (% style="color:#e74c3c" %)[[version>>doc:sdmx:Glossary.Version.WebHome]](%%) property on Categorisation
29 +* Removal of Advanced [[Release Calendar>>doc:sdmx:Glossary.Release policy - release calendar.WebHome]]
30 30  
31 31  **Content of the Document**
32 32  
33 -The remainder of this document contains a summary of the changes. More detailed information can be found in the SDMX 3.1 Technical Specifications, in particular:
33 +The remainder of this document contains a summary of the changes. More detailed information can be found in the [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] 3.1 Technical Specifications, in particular:
34 34  
35 35  Section 2 – Information Model
36 36  
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38 38  
39 39  Section 6 – Technical Notes
40 40  
41 -SDMX TWG GitHub for the REST API and the XML and JSON formats
41 +[[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] TWG GitHub for the REST API and the XML and JSON formats
42 42  
43 43  = 2. Summary of Breaking Changes in 3.1 =
44 44  
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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 focussed solely on the restriction of values that can be reported. As part of this remodelling the Advanced Release Calendar was removed as it does not play a restrictive role.
49 +The Data (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]](%%) was simplified to become a cohesive structural [[artefact>>doc:sdmx:Glossary.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.Release policy - release calendar.WebHome]] was removed as it does not play a restrictive role.
50 50  
51 51  //Guidance for Implementors//
52 +[[Reference Metadata>>doc:sdmx:Glossary.Reference metadata.WebHome]] reported against a [[Dataflow>>doc:sdmx:Glossary.Dataflow.WebHome]] and / or [[Provision Agreement>>doc:sdmx:Glossary.Provision agreement.WebHome]] can be used as an alternative to the Advanced [[Release Calendar>>doc:sdmx:Glossary.Release policy - release calendar.WebHome]].
52 52  
53 -Reference Metadata reported against a Dataflow and / or Provision Agreement can be used as an alternative to the Advanced Release Calendar.
54 -
55 55  == 2.2 Removal of Version on Categorisation ==
56 56  
57 -The Categorisation structural artefact has no use case for undergoing version changes, the version was therefore removed.
56 +The Categorisation structural [[artefact>>doc:sdmx:Glossary.Artefact.WebHome]] has no use case for undergoing (% style="color:#e74c3c" %)[[version>>doc:sdmx:Glossary.Version.WebHome]](%%) changes, the (% style="color:#e74c3c" %)[[version>>doc:sdmx:Glossary.Version.WebHome]](%%) was therefore removed.
58 58  
59 -Guidance for Implementors
58 +//Guidance for Implementors//
59 +If multiple (% style="color:#e74c3c" %)[[versions>>doc:sdmx:Glossary.Version.WebHome]](%%) of a Categorisation exist where the source or target differs, these Categorisations should be given a unique ID.
60 60  
61 -If multiple versions of a Categorisation exist where the source or target differs, these Categorisations should be given a unique ID.
62 -
63 63  = 3. Information Model =
64 64  
65 65  The changes to the information model support two distinct use cases:
66 66  
67 -1. Horizontally complex Data Structure Definitions (DSDs)
68 -1. Additional cohesion to the Data Constraints model
65 +1. Horizontally complex [[Data Structure Definitions>>doc:sdmx:Glossary.Data structure definition.WebHome]] (DSDs)
66 +1. Additional cohesion to the Data (% style="color:#e74c3c" %)[[Constraints>>doc:sdmx:Glossary.Constraint.WebHome]](%%) model
69 69  
70 70  These changes are described in below.
71 71  
72 72  == 3.1 Horizontally Complex Data Structure Definitions ==
73 73  
74 -An explanation of this use case, with additional details can be found under Section 6 - Technical Notes, under heading ‘10.3 Dimension Constraint’.
72 +An explanation of this use case, with additional details can be found under Section 6 - Technical Notes, under heading ‘10.3 [[Dimension>>doc:sdmx:Glossary.Dimension.WebHome]] (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]](%%)’.
75 75  
76 76  The following changes to the model have been made to satisfy this use case.
77 77  
78 -Data Structure Definition
76 +**Data Structure Definition**
79 79  
80 -The Data Structure Definition has a new ‘evolving structure’ property, this is a Boolean property, when set to ‘true’ it indicates to the users of the DSD that new Dimensions may be added without the DSD undergoing a change to its major version number.
78 +The [[Data Structure Definition>>doc:sdmx: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:sdmx:Glossary.Data structure definition.WebHome]] that new [[Dimensions>>doc:sdmx:Glossary.Dimension.WebHome]] may be added without the [[DSD>>doc:sdmx:Glossary.Data structure definition.WebHome]] undergoing a change to its major (% style="color:#e74c3c" %)[[version>>doc:sdmx:Glossary.Version.WebHome]](%%) number.
81 81  
82 -Dataflow
80 +**Dataflow**
83 83  
84 -The Dataflow has a new Dimension Constraint property, which is used to reference a subset of Dimensions which it uses from the referenced DSD.
82 +The [[Dataflow>>doc:sdmx:Glossary.Dataflow.WebHome]] has a new [[Dimension>>doc:sdmx:Glossary.Dimension.WebHome]] (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]](%%) property, which is used to reference a subset of [[Dimensions>>doc:sdmx:Glossary.Dimension.WebHome]] which it uses from the referenced [[DSD>>doc:sdmx:Glossary.Data structure definition.WebHome]].
85 85  
86 -The Dimension Constraint fixes the Dimensions of the Dataflow enabling the referenced DSD to have new Dimensions added without the need to change the major version number.
84 +The [[Dimension>>doc:sdmx:Glossary.Dimension.WebHome]] (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]](%%) fixes the [[Dimensions>>doc:sdmx:Glossary.Dimension.WebHome]] of the [[Dataflow>>doc:sdmx:Glossary.Dataflow.WebHome]] enabling the referenced [[DSD>>doc:sdmx:Glossary.Data structure definition.WebHome]] to have new [[Dimensions>>doc:sdmx:Glossary.Dimension.WebHome]] added without the need to change the major (% style="color:#e74c3c" %)[[version>>doc:sdmx:Glossary.Version.WebHome]](%%) number.
87 87  
88 -The Dimension Constraint property is only required if the DSD sets the evolving structure property to true.
86 +The [[Dimension>>doc:sdmx:Glossary.Dimension.WebHome]] (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]](%%) property is only required if the [[DSD>>doc:sdmx:Glossary.Data structure definition.WebHome]] sets the evolving structure property to true.
89 89  
90 90  == 3.2 Constraint Cohesion ==
91 91  
92 -The Constraint model in SDMX 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. In SDMX 3.0 these distinctions were made using the ‘type’ property on a Data Constraint.
90 +The (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]](%%) model in [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] 3.1 has been made more cohesive by separating the Data (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]](%%) into two distinct structures; the Data (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]](%%) which describes reporting restrictions, and the Availability (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]](%%), which describes data content from a [[data source>>doc:sdmx:Glossary.Data source.WebHome]]. In [[SDMX>>doc:sdmx: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:sdmx:Glossary.Constraint.WebHome]](%%).
93 93  
94 -Data Constraint
92 +**Data [[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]]**
95 95  
96 -The Data Constraint has had the ‘type’ property removed; the Data Constraint in SDMX 3.1 is always used to describe restrictions on content for data reporting purposes.
94 +The Data (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]](%%) has had the ‘type’ property removed; the Data (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]](%%) in [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] 3.1 is always used to describe restrictions on content for data reporting purposes.
97 97  
98 -The attachment of the Data Constraint in SDMX 3.0 included Data Sources, in SDMX 3.1 these attachments have been removed as these are not relevant for restricting reported data.
96 +The attachment of the Data (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]](%%) in [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] 3.0 included [[Data Sources>>doc:sdmx:Glossary.Data source.WebHome]], in [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] 3.1 these attachments have been removed as these are not relevant for restricting reported data.
99 99  
100 -Availability Constraint
98 +**Availability [[Constraint>>doc:sdmx:Glossary.Constraint.WebHome]]**
101 101  
102 -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, identity or version
100 +The Availability (% style="color:#e74c3c" %)[[Constraint>>doc:sdmx: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:sdmx:Glossary.Maintenance agency.WebHome]], identity or (% style="color:#e74c3c" %)[[version>>doc:sdmx:Glossary.Version.WebHome]]
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