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Last modified by Helena on 2025/09/10 11:19
From version 4.4
edited by Helena
on 2025/05/14 15:23
Change comment: There is no comment for this version
To version 4.6
edited by Helena
on 2025/05/14 15:25
Change comment: There is no comment for this version

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64 64  == 2.1 Major Changes from 1.0 to 2.0 ==
65 65  
66 66  * **Reference Metadata**: In addition to describing and specifying data structures and formats (along with related structural metadata), the version 2.0 specification also provides for the exchange of metadata which is distinct from the structural metadata in the 1.0 version. This category includes “reference” metadata (regarding data quality, methodology, and similar types – it can be configured by the user to include whatever concepts require reporting); metadata related to data provisioning (release calendar information, description of the data and metadata provided, etc.); and metadata relevant to the exchange of categorization schemes.
67 -* **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/notification.
67 +* **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.
68 +* **Structural Metadata**: The support for exchange of statistical data and related structural metadata has been expanded. Some support is provided for qualitative data; data cube structures are described; hierarchical code lists are supported; relationships between data structures can be expressed, providing support for extensibility of data structures; 101 and the description of functional dependencies within cubes are supported.
68 68  
69 -• **Structural Metadata**: The support for exchange of statistical data and related structural metadata has been expanded. Some support is provided for qualitative data; data cube structures are described; hierarchical code lists are supported; relationships between data structures can be expressed, providing support for extensibility of data structures; 101 and the description of functional dependencies within cubes are supported.
70 -
71 71  == 2.2 Major Changes from 2.0 to 2.1 ==
72 72  
72 +* **Simplification of the data structure definition - specific message types:** Both time series (version 2.0 Compact) and non-time series data sets (version 2.0 Cross Sectional) use the same underlying structure for a structure-specific formatted message, which is specific to the Data Structure Definition of the data set.
73 +* **Simplification and better support for the metadata structure: **New use cases have been reported and these are now supported by a re-modelled metadata structure definition.
73 73  * **Web-Services-Oriented Changes:** Several organizations have been implementing web services applications using SDMX, and these implementations have resulted in several changes to the specifications. Because the nature of SDMX web services could not be anticipated at the time of the original drafting of the specifications, the web services guidelines have been completely re-developed.
74 74  * **Presentational Changes: **Much work has gone into using various technologies for the visualization of SDMX data and metadata, and some changes have been proposed as a result, to better leverage this graphical visualization. These changes are largely to leverage the Cross-domain Concepts of the Content Oriented Guidelines.
75 75  * **Consistency Issues:** There have been some areas where the draft specifications were inconsistent in minor ways, and these have been addressed.
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78 78  * **Consistency between the SDMX-ML and the SDMX Information Model: **Certain aspects of the XML schemas and UML model have been more closely aligned, to allow for easier comprehension of the SDMX model.
79 79  * **Technical Bugs:** Some minor technical bugs have been identified in the registry interfaces and elsewhere. These bugs have been addressed.
80 80  * **Support for Non-Time-Series Data in the Generic Format: **One area which has been extended is the ability to express non-time-series data as part of the generic data message.
81 -* (((
82 -(% class="wikigeneratedid" id="HSimplificationofthedatastructuredefinition-specificmessagetypes:Bothtimeseries28version2.0Compact29andnon-timeseriesdatasets28version2.0CrossSectional29usethesameunderlyingstructureforastructure-specificformattedmessage2CwhichisspecifictotheDataStructureDefinitionofthedataset." %)
83 -**Simplification of the data structure definition - specific message types:** Both time series (version 2.0 Compact) and non-time series data sets (version 2.0 Cross Sectional) use the same underlying structure for a structure-specific formatted message, which is specific to the Data Structure Definition of the data set.
84 -)))
85 -* **Simplification and better support for the metadata structure: **New use cases have been reported and these are now supported by a re-modelled metadata structure definition.
86 86  * **Support for partial item schemes such as a code list: **The concept of a partial (sub set) item scheme such as a partial code list for use in exchange scenarios has been introduced**.**
87 87  
88 -== {{id name="_Toc56230"/}}2.3 Major Changes from 2.1 to 3.0 ==
84 +== 2.3 Major Changes from 2.1 to 3.0 ==
89 89  
90 90  SDMX version 3.0 introduces new features, improvements and changes to the Standard in the following key areas:
91 91