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1 -5 Reference Metadata
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1 -Methodology.SDMX 3\.0 Standards\. Section 6\. Technical notes.WebHome
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1 -xwiki:XWiki.arturkryazhev
1 +xwiki:XWiki.helena
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1 -Artefact|Attribute|Attribute relationship|Component|Data set|Data structure definition|Hierarchy|Maintainable artefact|Metadata set|Metadata structure definition|Metadataflow|Provision agreement|SDMX-ML|Statistical data and metadata exchange
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1 -{{box title="**Contents**"}}
2 -{{toc/}}
3 -{{/box}}
4 -
5 -== 5.1 Scope of the Metadata Structure Definition (MSD) ==
6 -
7 -The scope of the [[MSD>>doc:Glossary.Metadata structure definition.WebHome]] is reduced in [[SDMX>>doc:Glossary.Statistical data and metadata exchange.WebHome]] 3.0, by means of simplifying its structure, but also in the way referenced [[Artefacts>>doc:Glossary.Artefact.WebHome]] are targeted. In fact, the [[MSD>>doc:Glossary.Metadata structure definition.WebHome]] is restricted to play the role of a single container, without targeting any specific [[Artefact>>doc:Glossary.Artefact.WebHome]]. The possible targets of [[Metadata Set>>doc:Glossary.Metadata set.WebHome]] are specified in the [[Metadataflows>>doc:Glossary.Metadataflow.WebHome]] or Metadata [[Provision Agreements>>doc:Glossary.Provision agreement.WebHome]] relating to that [[MSD>>doc:Glossary.Metadata structure definition.WebHome]]. To achieve that, the structure of the [[Metadataflow>>doc:Glossary.Metadataflow.WebHome]] has changed in this (% style="color:#e74c3c" %)version(%%) of the standard. Moreover, the Metadata [[Provision Agreement>>doc:Glossary.Provision agreement.WebHome]] [[Artefact>>doc:Glossary.Artefact.WebHome]] is introduced to include this feature.
8 -
9 -Two more changes, introduced in this (% style="color:#e74c3c" %)version(%%), are the following:
10 -
11 -* The [[Metadata Set>>doc:Glossary.Metadata set.WebHome]] becomes a [[Maintainable Artefact>>doc:Glossary.Maintainable artefact.WebHome]] but maintained by a Metadata Provider (another new [[Artefact>>doc:Glossary.Artefact.WebHome]] in this (% style="color:#e74c3c" %)version(%%)).
12 -* Metadata [[Attributes>>doc:Glossary.Attribute.WebHome]] may also be used in [[Data Structure Definitions>>doc:Glossary.Data structure definition.WebHome]], as long as the latter reference the [[Metadata Structure Definition>>doc:Glossary.Metadata structure definition.WebHome]] that specify those Metadata [[Attributes>>doc:Glossary.Attribute.WebHome]].
13 -
14 -== 5.2 Identification of the Object(s) to which the Metadata is to be attached ==
15 -
16 -The following example shows the structure and naming of the [[MSD>>doc:Glossary.Metadata structure definition.WebHome]] and related [[components>>doc:Glossary.Component.WebHome]] for creating reference metadata.
17 -
18 -The schematic structure of an [[MSD>>doc:Glossary.Metadata structure definition.WebHome]] is shown below.
19 -
20 -[[image:SDMX 3-0-0 SECTION 6 FINAL-1.0_en_bf0dc4e4.jpg||height="309" width="550"]]
21 -
22 -(% class="wikigeneratedid" id="HFigure1:SchematicoftheMetadataStructureDefinition" %)
23 -**Figure 1: Schematic of the Metadata Structure Definition**
24 -
25 -The [[MSD>>doc:Glossary.Metadata structure definition.WebHome]] contains one Metadata [[Attribute>>doc:Glossary.Attribute.WebHome]] Descriptor comprising the Metadata [[Attributes>>doc:Glossary.Attribute.WebHome]] that identify the (% style="color:#e74c3c" %)Concepts(%%) for which metadata may be reported in the [[Metadata Set>>doc:Glossary.Metadata set.WebHome]]. The [[Metadataflow>>doc:Glossary.Metadataflow.WebHome]] and Metadata [[Provision Agreement>>doc:Glossary.Provision agreement.WebHome]] comprise the specification of the objects to which metadata can be reported in a [[Metadata Set>>doc:Glossary.Metadata set.WebHome]] (Metadata Target(s)).
26 -
27 -The high-(% style="color:#e74c3c" %)level(%%) view of the [[MSD>>doc:Glossary.Metadata structure definition.WebHome]], as well as the way the [[Metadataflow>>doc:Glossary.Metadataflow.WebHome]] and Metadata [[Provision Agreement>>doc:Glossary.Provision agreement.WebHome]] specify the Targets:
28 -
29 -[[image:1747384080138-902.png]]
30 -
31 -**Figure 2: The high-level view of the MSD containing one Metadata Attribute Descriptor**
32 -
33 -[[image:1747384138269-958.png]]
34 -
35 -(% class="wikigeneratedid" id="HFigure3:WildcardedTargetObjectsasspecifiedinaMetadataflow" %)
36 -**Figure 3: Wildcarded Target Objects as specified in a Metadataflow**
37 -
38 -[[image:1747384174686-528.png]]
39 -
40 -(% class="wikigeneratedid" id="HFigure4:SpecificTargetObjectsasspecifiedinaMetadataProvisionAgreement" %)
41 -**Figure 4: Specific Target Objects as specified in a Metadata Provision Agreement**
42 -
43 -Note that the [[SDMX-ML>>doc:Glossary.SDMX-ML.WebHome]] schemas have specific 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, (% style="color:#e74c3c" %)version(%%), and id of the Maintainable Object in which it resides.
44 -
45 -== 5.3 Metadata Structure Definition ==
46 -
47 -An example is shown below.
48 -
49 -[[image:1747384374785-123.png]]
50 -
51 -**Figure 5: Example MSD showing specification of some Metadata Attributes **
52 -
53 -This example shows the following [[hierarchy>>doc:Glossary.Hierarchy.WebHome]] of Metadata [[Attributes>>doc:Glossary.Attribute.WebHome]]:
54 -
55 -* (% style="color:#e74c3c" %)Contact(%%) – this is presentational; no metadata is expected to be reported at this level
56 -** (% style="color:#e74c3c" %)Contact(%%) Name
57 -** Address – this is also presentational; up to 3 addresses are allowed
58 -*** House Number
59 -
60 -== 5.4 Metadata Set ==
61 -
62 -An example of reporting metadata according to the [[MSD>>doc:Glossary.Metadata structure definition.WebHome]] described above, is shown below.
63 -
64 -[[image:1747384548140-783.png]]
65 -
66 -(% class="wikigeneratedid" id="HFigure6:ExampleMetadataSet" %)
67 -**Figure 6: Example Metadata Set**
68 -
69 -This example shows:
70 -
71 -1. The reference to the Metadata [[Provision Agreement>>doc:Glossary.Provision agreement.WebHome]] and Metadata Target
72 -1. The reported metadata [[attributes>>doc:Glossary.Attribute.WebHome]] (AttributeSet)
73 -
74 -== 5.5 Reference Metadata in Data Structure Definition and Dataset ==
75 -
76 -An important change of [[SDMX>>doc:Glossary.Statistical data and metadata exchange.WebHome]] 3.0 is the ability to reference an [[MSD>>doc:Glossary.Metadata structure definition.WebHome]] within a [[DSD>>doc:Glossary.Data structure definition.WebHome]], in order to report any Metadata [[Attributes>>doc:Glossary.Attribute.WebHome]] defined in the former to [[Datasets>>doc:Glossary.Data set.WebHome]] of the latter.
77 -
78 -This is achieved by the following:
79 -
80 -* In a [[DSD>>doc:Glossary.Data structure definition.WebHome]], the user may add a reference to one [[MSD>>doc:Glossary.Metadata structure definition.WebHome]].
81 -* In the [[Attribute>>doc:Glossary.Attribute.WebHome]] Descriptor of the [[DSD>>doc:Glossary.Data structure definition.WebHome]], the user may include any Metadata [[Attributes>>doc:Glossary.Attribute.WebHome]] defined in the linked [[MSD>>doc:Glossary.Metadata structure definition.WebHome]]. o For each link to a Metadata [[Attribute>>doc:Glossary.Attribute.WebHome]], an [[Attribute Relationship>>doc:Glossary.Attribute relationship.WebHome]] may be specified (similarly to that for Data [[Attributes>>doc:Glossary.Attribute.WebHome]]).
82 -* In any [[Dataset>>doc:Glossary.Data set.WebHome]] complying with this [[DSD>>doc:Glossary.Data structure definition.WebHome]], Metadata [[Attributes>>doc:Glossary.Attribute.WebHome]] may be reported according to the specified [[Attribute Relationship>>doc:Glossary.Attribute relationship.WebHome]].
83 -** The [[hierarchy>>doc:Glossary.Hierarchy.WebHome]] of the Metadata [[Attributes>>doc:Glossary.Attribute.WebHome]] defined in the [[MSD>>doc:Glossary.Metadata structure definition.WebHome]] must be respected and they are reported in the same way as in a Metadataset, under the (% style="color:#e74c3c" %)level(%%) they are related within the [[DSD>>doc:Glossary.Data structure definition.WebHome]], via their [[Attribute Relationship>>doc:Glossary.Attribute relationship.WebHome]].
84 -* In Data (% style="color:#e74c3c" %)Constraints(%%), the user is allowed to restrict values for Metadata [[Attributes>>doc:Glossary.Attribute.WebHome]], in the same way as Data [[Attributes>>doc:Glossary.Attribute.WebHome]] (more on this in section “10 Constraints”).
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SUZ.Methodology.Code.MethodologyClass[0]
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1 -5