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Last modified by Artur on 2025/09/10 11:19
From version 11.2
edited by Elena
on 2025/06/17 16:45
Change comment: There is no comment for this version
To version 11.1
edited by Artur
on 2025/05/27 16:05
Change comment: There is no comment for this version

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12 12  Added the Section 10 –Validation and Transformation Language (VTL(% style="background-color:transparent" %))
13 13  )))
14 14  
15 -= Introduction =
15 += {{id name="_Toc38908"/}}1. Introduction =
16 16  
17 17  The [[Statistical Data and Metadata Exchange>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] ([[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]]) initiative (http:~/~/www.sdmx.org) sets standards that can facilitate the exchange of statistical data and metadata using modern information technology, with an emphasis on aggregated data.
18 18  
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30 30  
31 31  Please note also that the SOAP and REST specifications are not maintained any more in the section 7 (Web Service Guidelines), the link to these specifications can be found on the [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] website
32 32  
33 -= Changes from Previous Version =
33 += {{id name="_Toc38909"/}}2. Changes from Previous Version =
34 34  
35 -The 2.0 version of this standard represented a significant increase in scope, and also provided more complete support in those areas covered in the version 1.0 specification. Version 2.0 of this standard is backward-compatible with version 1.0, so that existing implementations can be easily migrated to conformance with version 2.0.
35 +The 2.0 (% style="color:#e74c3c" %)version(%%) of this standard represented a significant increase in scope, and also provided more complete support in those areas covered in the (% style="color:#e74c3c" %)version(%%) 1.0 specification. (% style="color:#e74c3c" %)Version(%%) 2.0 of this standard is backward-compatible with (% style="color:#e74c3c" %)version(%%) 1.0, so that existing implementations can be easily migrated to conformance with (% style="color:#e74c3c" %)version(%%) 2.0.
36 36  
37 -The 2.1 version of this standard represents a set of changes resulting from several years of implementation experience with the 2.0 standard. The changes do not represent a major increase in scope or functionality, but do correct some bugs, and add functionalities in some cases. Major changes in [[SDMX-ML>>doc:sdmx:Glossary.SDMX-ML.WebHome]] include a much stronger alignment of the XML Schemas with the Information Model, to emphasize inheritance and object-oriented features, and increased precision and flexibility in the attachment of metadata reports to specific objects in the [[SDMX Information Model>>doc:sdmx:Glossary.SDMX Information Model.WebHome]].
37 +The 2.1 (% style="color:#e74c3c" %)version(%%) of this standard represents a set of changes resulting from several years of implementation experience with the 2.0 standard. The changes do not represent a major increase in scope or functionality, but do correct some bugs, and add functionalities in some cases. Major changes in [[SDMX-ML>>doc:sdmx:Glossary.SDMX-ML.WebHome]] include a much stronger alignment of the XML Schemas with the Information Model, to emphasize inheritance and object-oriented features, and increased precision and flexibility in the attachment of metadata reports to specific objects in the [[SDMX Information Model>>doc:sdmx:Glossary.SDMX Information Model.WebHome]].
38 38  
39 -Note that the idea of backward-compatibility in the standards is based on the information model. In both releases, some non-backward-compatible changes have been made to the [[SDMX-ML>>doc:sdmx:Glossary.SDMX-ML.WebHome]] formats. The same set of information required to use version 1.0 of the specification will permit the use of the same features in the version 2.0 specifications, however. Thus, a [[Data Structure Definition>>doc:sdmx:Glossary.Data structure definition.WebHome]] is easily translated from version 1.0 to version 2.0, without requiring any new information regarding structures, etc. There have been no changes to the [[SDMX-EDI>>doc:sdmx:Glossary.SDMX-EDI.WebHome]] format.
39 +Note that the idea of backward-compatibility in the standards is based on the information model. In both releases, some non-backward-compatible changes have been made to the [[SDMX-ML>>doc:sdmx:Glossary.SDMX-ML.WebHome]] formats. The same set of information required to use (% style="color:#e74c3c" %)version(%%) 1.0 of the specification will permit the use of the same features in the (% style="color:#e74c3c" %)version(%%) 2.0 specifications, however. Thus, a [[Data Structure Definition>>doc:sdmx:Glossary.Data structure definition.WebHome]] is easily translated from (% style="color:#e74c3c" %)version(%%) 1.0 to (% style="color:#e74c3c" %)version(%%) 2.0, without requiring any new information regarding structures, etc. There have been no changes to the [[SDMX-EDI>>doc:sdmx:Glossary.SDMX-EDI.WebHome]] format.
40 40  
41 41  The major changes from 1.0 to 2.0 can be briefly summarized:
42 42  
43 -* **[[Reference Metadata>>doc:sdmx:Glossary.Reference metadata.WebHome]]**: In addition to describing and specifying data structures and formats (along with related [[structural metadata>>doc:sdmx:Glossary.Structural metadata.WebHome]]), the version 2.0 specification also provides for the exchange of metadata which is distinct from the [[structural metadata>>doc:sdmx:Glossary.Structural metadata.WebHome]] in the 1.0 version. This [[category>>doc:sdmx:Glossary.Category.WebHome]] includes “reference” metadata (regarding data quality, methodology, and similar types – it can be configured by the user to include whatever [[concepts>>doc:sdmx:Glossary.Concept.WebHome]] require reporting); metadata related to data provisioning ([[release calendar>>doc:sdmx:Glossary.Release policy - release calendar.WebHome]] information, description of the data and metadata provided, etc.); and metadata relevant to the exchange of categorization schemes.
44 -* **SDMX Registry**: Provision is made in the 2.0 standard for standard communication with registry services, to support a data-sharing model of statistical exchange. These services include registration of data and metadata, querying of registered data and metadata, and [[subscription>>doc:sdmx:Glossary.Subscription.WebHome]]/notification.
43 +* **[[Reference Metadata>>doc:sdmx:Glossary.Reference metadata.WebHome]]**: In addition to describing and specifying data structures and formats (along with related [[structural metadata>>doc:sdmx:Glossary.Structural metadata.WebHome]]), the (% style="color:#e74c3c" %)version(%%) 2.0 specification also provides for the exchange of metadata which is distinct from the [[structural metadata>>doc:sdmx:Glossary.Structural metadata.WebHome]] in the 1.0 (% style="color:#e74c3c" %)version(%%). This [[category>>doc:sdmx:Glossary.Category.WebHome]] includes “reference” metadata (regarding data quality, methodology, and similar types – it can be configured by the user to include whatever (% style="color:#e74c3c" %)concepts(%%) require reporting); metadata related to data provisioning ([[release calendar>>doc:sdmx:Glossary.Release policy - release calendar.WebHome]] information, description of the data and metadata provided, etc.); and metadata relevant to the exchange of categorization schemes.
44 +* **[[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] Registry**: Provision is made in the 2.0 standard for standard communication with registry services, to support a data-sharing model of statistical exchange. These services include registration of data and metadata, querying of registered data and metadata, and [[subscription>>doc:sdmx:Glossary.Subscription.WebHome]]/notification.
45 45  * **[[Structural Metadata>>doc:sdmx:Glossary.Structural metadata.WebHome]]**: The support for exchange of statistical data and related [[structural metadata>>doc:sdmx:Glossary.Structural metadata.WebHome]] has been expanded. Some support is provided for qualitative data; data cube structures are described; [[hierarchical code lists>>doc:sdmx:Glossary.Hierarchical code list.WebHome]] are supported; relationships between data structures can be expressed, providing support for extensibility of data structures; and the description of functional dependencies within cubes are supported.
46 46  
47 47  The major changes from 2.0 to 2.1 can be briefly summarized: