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Version 7.2 by Elena on 2025/06/16 20:07
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1 {{box title="**Contents**"}}
2 {{toc/}}
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5 == 5.1 Scope ==
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7 The scope of the [[MSD>>doc:sdmx:Glossary.Metadata structure definition.WebHome]] is enhanced in this version to better support the types of construct to which metadata can be attached. In particular it is possible to specify an attachment to any key or partial key of a [[data set>>doc:sdmx:Glossary.Data set.WebHome]]. This is particularly useful for web dissemination where metadata may be present for the data, but is not stored with the data but is related to it. For this use case to be supported it is necessary to be able to specify in the [[MSD>>doc:sdmx:Glossary.Metadata structure definition.WebHome]] that metadata is attached to a key or partial key, and the actual key or partial key to be identified in the [[Metadata Set>>doc:sdmx:Glossary.Metadata set.WebHome]].
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9 In addition to the increase in the scope of objects that can be included in an [[MSD>>doc:sdmx:Glossary.Metadata structure definition.WebHome]], the way the identifier mechanism works in this version, and the terminology used, is much simpler.
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11 == 5.2 Identification of the Object Type to which the Metadata is to be Attached ==
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13 The following example shows the structure and naming of the [[MSD>>doc:sdmx:Glossary.Metadata structure definition.WebHome]] [[components>>doc:sdmx:Glossary.Component.WebHome]] for the use case of defining full and partial keys.
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15 The schematic structure of an [[MSD>>doc:sdmx:Glossary.Metadata structure definition.WebHome]] is shown below.
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18 [[image:1748248366177-938.png]]
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20 **Figure 1: Schematic of the Metadata Structure Definition**
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22 The [[MSD>>doc:sdmx:Glossary.Metadata structure definition.WebHome]] comprises the specification of the object types to which metadata can be reported in a [[Metadata Set>>doc:sdmx:Glossary.Metadata set.WebHome]] (Metadata Target(s)), and the Report Structure(s) comprising the Metadata [[Attributes>>doc:sdmx:Glossary.Attribute.WebHome]] that identify the (% style="color:#e74c3c" %)[[Concept>>doc:sdmx:Glossary.Concept.WebHome]](%%) for which metadata may be reported in the [[Metadata Set>>doc:sdmx:Glossary.Metadata set.WebHome]]. Importantly, one Report Structure references the Metadata Target for which it is relevant. One Report Structure can reference many Metadata Target i.e. the same Report Structure can be used for different target objects.
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25 [[image:1748248388382-765.png]]
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27 **Figure 2: Example [[MSD>>doc:sdmx:Glossary.Metadata structure definition.WebHome]] showing Metadata Targets**
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29 Note that the [[SDMX-ML>>doc:sdmx:Glossary.SDMX-ML.WebHome]] schemas have explicit XML elements for each identifiable object type because identifying, for instance, a Maintainable Object has different properties from an Identifiable Object which must also include the agencyId, [[version>>path:/xwiki/wiki/sdmx/get/Methodology/SDMX%202.1%20Standards.%20Section%206.%20Technical%20Notes/4%20General%20Notes%20for%20Implementers/?sheet=CKEditor.ResourceDispatcher&outputSyntax=plain&language=en&type=doc&reference=Glossary.Version.WebHome&typed=true]], and id of the Maintainable Object in which it resides.
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31 == 5.3 Report Structure ==
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33 An example is shown below.
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36 [[image:1748248426216-682.png]]
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38 **Figure 3: Example MSD showing specification of three Metadata Attributes**
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40 This example shows the following [[hierarchy>>doc:sdmx:Glossary.Hierarchy.WebHome]] of Metadata [[Attributes>>doc:sdmx:Glossary.Attribute.WebHome]]:
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42 Source – this is presentational and no metadata is expected to be reported at this level
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44 * Source Type
45 * Collection Source Name
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47 == 5.4 Metadata Set ==
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49 An example of reporting metadata according to the [[MSD>>doc:sdmx:Glossary.Metadata structure definition.WebHome]] described above, is shown below.
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52 [[image:1748248454889-282.png]]
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54 **Figure 4: Example Metadata Set **This example shows:
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56 1. The reference to the [[MSD>>doc:sdmx:Glossary.Metadata structure definition.WebHome]], Metadata Report, and Metadata Target (MetadataTargetValue)
57 1. The reported metadata [[attributes>>doc:sdmx:Glossary.Attribute.WebHome]] (AttributeValueSet)