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Last modified by Helena K. on 2026/06/08 17:06
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edited by Helena K.
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1 +Attribute|Codelist|Constraint|Data Provider|Data Structure Definition|Hierarchy|Identifiable Artefact|Language|Maintenance agency|Metadata Set|Metadata Structure Definition|Metadata repository|Provision Agreement|Reference metadata|Reference period|SDMX Information Model|Statistical Data and Metadata eXchange|Structural metadata|Time period
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21 21  
22 22  === 7.2.1 Introduction ===
23 23  
24 -As with the Data Structure Definition Structure, many of the constructs in this layer of the model inherit from the SDMX Base layer. Therefore, it is necessary to study both the inheritance and the relationship diagrams to understand the functionality of individual packages. The diagram below shows the full inheritance tree for the classes concerned with the MetadataStructureDefinition, the MetadataProvisionAgreement, the Metadataflow and the MetadataSet.
24 +As with the Data Structure Definition Structure, many of the constructs in this layer of the model inherit from the SDMX Base layer. Therefore, it is necessary to study both the inheritance and the relationship diagrams to understand the functionality of individual
25 25  
26 +packages. The diagram below shows the full inheritance tree for the classes concerned with the MetadataStructureDefinition, the MetadataProvisionAgreement, the Metadataflow and the MetadataSet.
27 +
26 26  There are very few additional classes in the MetadataStructureDefinition package that do not themselves inherit from classes in the SDMX Base. In other words, the SDMX Base gives most of the structure of this sub model both in terms of associations and in terms of attributes. The relationship diagrams shown in this section show clearly when these associations are inherited from the SDMX Base (see the Appendix “A Short Guide to UML in the SDMX Information Model” to see the diagrammatic notation used to depict this).
27 27  
28 28  === 7.2.2 Class Diagram - Inheritance ===
29 29  
30 -[[image:1749246462779-763.jpeg]]** **
32 +[[image:image58.png]]
31 31  
32 32  **Figure 32: Inheritance class diagram of the Metadata Structure Definition**
33 33  
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59 59  
60 60  === 7.3.3 Class Diagram – Relationship ===
61 61  
62 -[[image:1749246462786-944.jpeg]]
64 +[[image:image59.png]]
63 63  
64 64  **Figure 33: Relationship class diagram of the Metadata Structure Definition**
65 65  
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81 81  
82 82  The definition of the various types of Representation can be found in the specification of the Base constructs. Note that if the Representation is non-enumerated then the association is to the ExtendedFacet (which allows for XHTML as a FacetValueType). If the Representation is enumerated, then is must use a Codelist.
83 83  
84 -The Metadataflow is linked to a MetadataStructureDefinition. The Metadataflow, in addition to the attributes inherited from the Base classes, it also has a list of
86 +The Metadataflow is linked to a MetadataStructureDefinition. The Metadataflow, in addition to the attributes inherited from the Base classes, it also has a list of IdentifiableObjectSelection constructs, which resolve into the IdentifiableArtefacts that the Metadatasets will refer to. The IdentifiableObjectSelection acts like a reference, but it may also include wildcarding part of the reference terms.
85 85  
86 -IdentifiableObjectSelection constructs, which resolve into the IdentifiableArtefacts that the Metadatasets will refer to. The IdentifiableObjectSelection acts like a reference, but it may also include wildcarding part of the reference terms.
87 -
88 88  The MetadataProvisionAgreement is linked to a Metadataflow. The former, like the Metadataflow, may have IdentifiableObjectSelection constructs to be used for specifying the proper targets for reference metadata.
89 89  
90 90  ==== 7.3.4.2 Definitions ====
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124 124  
125 125  === 7.4.1 Class Diagram ===
126 126  
127 -[[image:1749246462791-735.jpeg]]
127 +[[image:image60.png]]
128 128  
129 129  **Figure 34: Relationship Class Diagram of the Metadata Set**
130 130  
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174 174  |//MetadataAttributeValue//|(((
175 175  Abstract class
176 176  Sub classes are:
177 -//UncodedMetadataAttrib uteValue//
178 -CodedMetadataAttribut eValue
177 +//UncodedMetadataAttributeValue//
178 +CodedMetadataAttributeValue
179 179  )))|(% style="width:515px" %)The value for a Metadata Attribute.
180 180  | |(((
181 181  +valueFor
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192 192  Sub class:
193 193  XHTMLAttributeValue
194 194  TextAttributeValue
195 -OtherUncodedAttribute
196 -Value
195 +OtherUncodedAttributeValue
197 197  )))|(% style="width:515px" %)The content of a Metadata Attribute value where this is textual.
198 198  |XHTMLAttributeValue| |(% style="width:515px" %)This contains XHTML
199 199  | |value|(% style="width:515px" %)The string value of the XHTML
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SUZ.Methodology.Code.MethodologyClass[0]
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SKMS.Methodology.Code.MethodologyClass[0]
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