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Last modified by Artur on 2025/09/30 12:30
From version 6.1
edited by Helena
on 2025/06/06 16:58
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To version 10.1
edited by Helena
on 2025/06/06 17:05
Change comment: Deleted image "SDMX_3-1-0_SECTION_1_FINAL_6728d8d4.png"

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141 141  (% class="wikigeneratedid" id="HInformationModel-1" %)
142 142  **Information Model**
143 143  
144 -* Addition of Dimension Constraint property to a Dataflow//  //
145 -* Addition of evolving structure property to a Data Structure Definition//  //
146 -* Remove version property on Categorisation//  //
147 -* Simplification of Constraints o Removal of Advanced Release Calendar//  //
144 +* Addition of Dimension Constraint property to a Dataflow
145 +* Addition of evolving structure property to a Data Structure Definition
146 +* Remove version property on Categorisation
147 +* Simplification of Constraints o Removal of Advanced Release Calendar
148 148  
149 149  o Removal of Role, Data Constraints only restrict data that can be reported// //o Restrict constraint targets to Identifiable structures (not URLs) o Addition of Availability Constraint to define actual data
150 150  
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206 206  
207 207  The formal objects in the information model are presented schematically in Figure 1, and are discussed in more detail elsewhere in this document.
208 208  
209 -[[image:SDMX_3-1-0_SECTION_1_FINAL_6728d8d4.png||height="829" width="606"]]
210 210  
211 211  **Figure 1: High Level Schematic of Major Artefacts in the SDMX 3.0 Information Model**
212 212  
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240 240  * //**Dataflow Definition:**// In SDMX, data sets are reported or disseminated according to a data flow definition. The data flow definition identifies the data structure definition and may be associated with one or more subject matter domains via a Categorisation (this facilitates the search for data according to organised category schemes). Constraints, in terms of reporting periodicity or sub set of possible keys that are allowed in a data set, may be attached to the data flow definition.
241 241  * //**Metadataflow Definition:**// A metadata flow definition is very similar to a data flow definition, but describes, categorises, and constrains metadata sets.
242 242  * //**Data Provider: **//An organization which produces data is termed a data provider.
243 -* //**Metadata Provider: **//An organization which produces reference metadata is termed a metadata provider.//  //
242 +* //**Metadata Provider: **//An organization which produces reference metadata is termed a metadata provider.
244 244  * //**Provision Agreement (Metadata Provision Agreement):**// The set of information which describes the way in which data sets and metadata sets are provided by a data/metadata provider. A provision agreement can be constrained in much the same way as a data or metadata flow definition. Thus, a data provider can express the fact that it provides a particular data flow covering a specific set of countries and topics, Importantly, the actual source of registered data or metadata is attached to the provision agreement (in terms of a URL). The term “agreement” is used because this information can be understood as the basis of a “service-level agreement”. In SDMX, however, this is informational metadata to support the technical systems, as opposed to any sort of contractual information (which is outside the scope of a technical specification). In version 3.0, metadata provision agreement and data provision agreement are two separate artefacts.
245 245  * //**Data Constraint:**// Used to restrict content (such as enumerations) and are used by provision agreements, data flows, data structure definitions in order to provide a set of reporting restrictions in the context of a collection
246 246  * //**Metadata Constraint:**// Used to restrict content (such as enumerations) and are used by metadata provision agreements, metadata flows, metadata structure definitions in order to provide a set of reporting restrictions in the context of a collection
SDMX_3-1-0_SECTION_1_FINAL_6728d8d4.png
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