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Last modified by Artur on 2025/09/10 11:19
From version 5.1
edited by Helena
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To version 6.2
edited by Helena
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15 15  = {{id name="_Toc38908"/}}1. Introduction =
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17 -The Statistical Data and Metadata Exchange (SDMX) 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.
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>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]].org) sets standards that can facilitate the exchange of statistical data and metadata using modern information technology, with an emphasis on aggregated data.
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19 -There are several sections to the SDMX Technical Specification:
19 +There are several sections to the [[SDMX Technical Specification>>doc:sdmx:Glossary.SDMX Technical Specification.WebHome]]:
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21 -1. SDMX Framework Document – this document. The purpose of this document is to introduce SDMX and its scope. This document will be revised in due course to include the conformance requirements.
22 -1. The SDMX Information Model - the information model on which syntaxspecific implementations described in the other sections are based. This is intended for technicians wishing to understand the complete scope of the technical standards in a syntax-neutral form. It includes as an annex a tutorial on UML (Unified Modelling Language). This document is not normative.
23 -1. SDMX-EDI - the UN/EDIFACT format for exchange of SDMX-structured data and metadata. This document contains normative sections describing the use of the UN/EDIFACT syntax in SDMX messages. This document has normative sections.
24 -1. SDMX-ML - the XML format for the exchange of SDMX-structured data and metadata. This document has normative sections describing the use of the XML syntax in SDMX messages, and is accompanied by a set of normative XML schemas and non-normative sample XML document instances.
25 -1. The SDMX Registry Specification provides for a central registry of information about available data and reference metadata, and for a repository containing structural metadata and provisioning information. This specification defines the basic services offered by the SDMX Registry: registration of data and metadata; querying for data and metadata; and subscription/notification regarding updates to the registry. This document has normative sections.
26 -1. The SDMX Technical Notes – this is a guide to help those who wish to use the SDMX specifications. It includes notes on the expressive differences of the various messages and syntaxes; versioning; maintenance agencies; the SDMX Registry. This document is not normative.
27 -1. Web Services Guidelines – this is a guide for those who wish to implement SDMX using web-services technologies. It places an emphasis on those aspects of web-services technologies (including, but not requiring, an SDMXconformant registry) which will work regardless of the development environment or platform used to create the web services. This document contains normative sections.{{footnote}}SOAP and REST specifications are not maintained any more in this section, see the SDMX website.{{/footnote}}
21 +1. [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] Framework Document – this document. The purpose of this document is to introduce [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] and its scope. This document will be revised in due course to include the conformance requirements.
22 +1. The [[SDMX Information Model>>doc:sdmx:Glossary.SDMX Information Model.WebHome]] - the information model on which syntaxspecific implementations described in the other sections are based. This is intended for technicians wishing to understand the complete scope of the technical standards in a syntax-neutral form. It includes as an annex a tutorial on UML (Unified Modelling Language). This document is not normative.
23 +1. [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]]-EDI - the UN/EDIFACT format for exchange of [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]]-structured data and metadata. This document contains normative sections describing the use of the UN/EDIFACT syntax in [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] messages. This document has normative sections.
24 +1. [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]]-ML - the XML format for the exchange of [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]]-structured data and metadata. This document has normative sections describing the use of the XML syntax in [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] messages, and is accompanied by a set of normative XML schemas and non-normative sample XML document instances.
25 +1. The [[SDMX Registry>>doc:sdmx:Glossary.SDMX Registry.WebHome]] Specification provides for a central registry of information about available data and [[reference metadata>>doc:sdmx:Glossary.Reference metadata.WebHome]], and for a repository containing [[structural metadata>>doc:sdmx:Glossary.Structural metadata.WebHome]] and provisioning information. This specification defines the basic services offered by the [[SDMX Registry>>doc:sdmx:Glossary.SDMX Registry.WebHome]]: registration of data and metadata; querying for data and metadata; and [[subscription>>doc:sdmx:Glossary.Subscription.WebHome]]/[[notification>>doc:sdmx:Glossary.Notification.WebHome]] regarding updates to the registry. This document has normative sections.
26 +1. The [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] Technical Notes – this is a guide to help those who wish to use the [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] specifications. It includes notes on the expressive differences of the various messages and syntaxes; versioning; [[maintenance agencies>>doc:sdmx:Glossary.Maintenance agency.WebHome]]; the [[SDMX Registry>>doc:sdmx:Glossary.SDMX Registry.WebHome]]. This document is not normative.
27 +1. Web Services Guidelines – this is a guide for those who wish to implement [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] using web-services technologies. It places an emphasis on those aspects of web-services technologies (including, but not requiring, an SDMXconformant registry) which will work regardless of the development environment or platform used to create the web services. This document contains normative sections.{{footnote}}SOAP and REST specifications are not maintained any more in this section, see the SDMX website.{{/footnote}}
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29 -In July 2020 it was released an important improvement of the SDMX 2.1 specifications for the SDMX implementation of the Validation and Transformation Language (VTL). This implied a revision of some of the SDMX 2.1 sections. The relevant changes are not described in the next section but in the section 10 below.
29 +In July 2020 it was released an important improvement of the [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] 2.1 specifications for the [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] implementation of the [[Validation and Transformation Language>>doc:sdmx:Glossary.Validation and transformation language.WebHome]] ([[VTL>>doc:sdmx:Glossary.Validation and transformation language.WebHome]]). This implied a revision of some of the [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] 2.1 sections. The relevant changes are not described in the next section but in the section 10 below.
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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 website
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
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33 33  = {{id name="_Toc38909"/}}2. Changes from Previous Version =
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