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1 +11 Data Provisioning
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1 +Methodology.SDMX 2\.1 Standards\. Section 2\. Information model\: UML conceptual design.WebHome
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1 +{{box title="**Contents**"}}
2 +{{toc/}}
3 +{{/box}}
4 +
5 +== {{id name="_Toc371071"/}}11.1 Class Diagram ==
6 +
7 +[[image:SDMX_2-1_SECTION_2_InformationModel_2020-07_d7e39650.png||height="693" width="555"]]
8 +
9 +**Figure 41: Relationship and inheritance class diagram of data provisioning**
10 +
11 +== {{id name="_Toc371072"/}}11.2 Explanation of the Diagram ==
12 +
13 +=== {{id name="_Toc371073"/}}11.2.1 Narrative ===
14 +
15 +This sub model links many [[artefacts>>doc:sdmx:Glossary.Artefact.WebHome]] in the [[SDMX-IM>>doc:sdmx:Glossary.SDMX Information Model.WebHome]] and is pivotal to an [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] metadata registry, as all of the [[artefacts>>doc:sdmx:Glossary.Artefact.WebHome]] in this sub model must be accessible to an application that is responsible for data and metadata registration or for an application that requires access to the data or metadata.
16 +
17 +Whilst a registry contains all of the metadata depicted on the diagram above, the classes in the grey shaded area are specific to a registry based scenario where [[data sources>>doc:sdmx:Glossary.Data source.WebHome]] (either physical data and [[metadata sets>>doc:sdmx:Glossary.Metadata set.WebHome]] or databases and [[metadata repositories>>doc:sdmx:Glossary.Metadata repository.WebHome]]) are registered. More details on how these classes are used in a registry scenario can be found in the [[SDMX Registry>>doc:sdmx:Glossary.SDMX Registry.WebHome]] Interface document. (Section 5 of the [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] Standards).
18 +
19 +A ProvisionAgreement links the [[artefact>>doc:sdmx:Glossary.Artefact.WebHome]] that defines how data and metadata are structured and classified (//StructureUsage//) to the DataProvider, and, by means of a data or metadata registration, it references the Datasource (this can be data or metadata), whether this be an [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] conformant file on a website (SimpleDatasource) or a database service capable of supporting an [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] query and responding with an [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] conformant document (//QueryDatasource//).
20 +
21 +The //StructureUsage//, which has concrete classes of DataflowDefinition and MetadataflowDefinition identifies the corresponding DataStructureDefinition or MetadataStructureDefinition, and, via Categorisation, can link to one or more [[Category>>doc:sdmx:Glossary.Category.WebHome]] in a CategoryScheme such as a subject matter domain scheme, by which the //StructureUsage// can be classified. This can assist in drilling down from subject matter domains to find the data or metadata that may be relevant.
22 +
23 +The SimpleDatasource links to the actual [[DataSet>>doc:sdmx:Glossary.Data set.WebHome]] or MetadataSet on a website (this is shown on the diagram as a dependency called “references”). The sourceURL is obtained during the registration process of the [[DataSet>>doc:sdmx:Glossary.Data set.WebHome]] or the MetadataSet. Additional information about the content of the SimpleDatasource is stored in the registry in terms of a ContentConstraint (see 10.3) for the Registration.
24 +
25 +The QueryDatasource is an abstract class that represents a [[data source>>doc:sdmx:Glossary.Data source.WebHome]] which can understand an [[SDMX-ML>>doc:sdmx:Glossary.SDMX-ML.WebHome]] query (SOAPDatasource) or RESTful query (RESTDatasource) and respond appropriately. Each of these different Datasources inherit the dataURL from Datasource, and the QueryDatasource has an additional URL to locate a WSDL or WADL document to describe how to access it. All other supported protocols are assumed to use the SimpleDatasource URL.
26 +
27 +The diagram below shows in schematic way the essential navigation through the [[SDMX>>doc:sdmx:Glossary.Statistical data and metadata exchange.WebHome]] structural [[artefacts>>doc:sdmx:Glossary.Artefact.WebHome]] that eventually link to a data or metadata registration.
28 +
29 +[[image:SDMX_2-1_SECTION_2_InformationModel_2020-07_c6141d32.jpg||height="416" width="554"]]
30 +
31 +**Figure 42: Schematic of the linking of [[structural metadata>>doc:sdmx:Glossary.Structural metadata.WebHome]] to data and metadata registration**
32 +
33 +=== {{id name="_Toc371074"/}}11.2.2 Definitions ===
34 +
35 +(((
36 +(% style="width:1173.29px" %)
37 +|(% style="width:227px" %)**Class**|(% style="width:271px" %)**Feature**|(% style="width:634px" %)**Description**
38 +|(% style="width:227px" %)//StructureUsage//|(% style="width:271px" %)(((
39 +Abstract class:
40 +Sub classes are:
41 +DataflowDefinition
42 +MetadataflowDefinition
43 +)))|(% style="width:634px" %)This is described in the Base.
44 +|(% style="width:227px" %) |(% style="width:271px" %)controlledBy|(% style="width:634px" %)Association to the [[Provision Agreements>>doc:sdmx:Glossary.Provision agreement.WebHome]] that comprise the metadata related to the provision of data.
45 +|(% style="width:227px" %)DataProvider|(% style="width:271px" %) |(% style="width:634px" %)See Organisation Scheme.
46 +|(% style="width:227px" %) |(% style="width:271px" %)hasAgreement|(% style="width:634px" %)Association to the [[Provision Agreements>>doc:sdmx:Glossary.Provision agreement.WebHome]] for which the provider supplies data or metadata.
47 +|(% style="width:227px" %) |(% style="width:271px" %)+source|(% style="width:634px" %)Association to a data or metadata source which can process a data or metadata query.
48 +|(% style="width:227px" %)ProvisionAgreement|(% style="width:271px" %) |(% style="width:634px" %)Links the [[Data Provider>>doc:sdmx:Glossary.Data provider.WebHome]] to the relevant Structure Usage (e.g. [[Dataflow>>doc:sdmx:Glossary.Dataflow.WebHome]] Definition or [[Metadataflow>>doc:sdmx:Glossary.Metadataflow.WebHome]] Definition) for which the provider supplies data or metadata The agreement may constrain the scope of the data or metadata that can be provided, by means of a Constraint.
49 +|(% style="width:227px" %) |(% style="width:271px" %)+source|(% style="width:634px" %)Association to a data or [[reference metadata>>doc:sdmx:Glossary.Reference metadata.WebHome]] source which can process a data or metadata query.
50 +|(% style="width:227px" %)//Datasource//|(% style="width:271px" %)(((
51 +Abstract class:
52 +Sub classes are:
53 +SimpleDatasource
54 +//WebServices
55 +Datasource//
56 +)))|(% style="width:634px" %)Identification of the location or service from where data or [[reference metadata>>doc:sdmx:Glossary.Reference metadata.WebHome]] can be obtained.
57 +|(% style="width:227px" %) |(% style="width:271px" %)+sourceURL|(% style="width:634px" %)The URL of the data or [[reference metadata>>doc:sdmx:Glossary.Reference metadata.WebHome]] source (a file or a web service).
58 +|(% style="width:227px" %)SimpleDatasource|(% style="width:271px" %) |(% style="width:634px" %)An [[SDMX-ML>>doc:sdmx:Glossary.SDMX-ML.WebHome]] [[data set>>doc:sdmx:Glossary.Data set.WebHome]] accessible as a file at a URL.
59 +|(% style="width:227px" %)//WebServices Datasource//|(% style="width:271px" %)(((
60 +Abstract class:
61 +Inherits from:
62 +//Datasource//
63 +Sub classes are:
64 +RESTDatasource
65 +SOAPDatasource
66 +)))|(% style="width:634px" %)A data or [[reference metadata>>doc:sdmx:Glossary.Reference metadata.WebHome]] source which can process a data or metadata query.
67 +|(% style="width:227px" %)RESTDatasource|(% style="width:271px" %) |(% style="width:634px" %)A data or [[reference metadata>>doc:sdmx:Glossary.Reference metadata.WebHome]] source that is accessible via a RESTful web services interface.
68 +|(% style="width:227px" %) |(% style="width:271px" %) |(% style="width:634px" %)A data or [[reference metadata>>doc:sdmx:Glossary.Reference metadata.WebHome]] source that conforms to a SOAP web service interface.
69 +|(% style="width:227px" %)SOAPDatasource|(% style="width:271px" %)+WSDLURL|(% style="width:634px" %)Association to the URL of the Web Service Definition Language (SOAP) or Web Service Application Language (REST) profile of the web service.
70 +|(% style="width:227px" %)Registration|(% style="width:271px" %) |(% style="width:634px" %)This is not detailed here but is shown as the link between the [[SDMX-IM>>doc:sdmx:Glossary.SDMX Information Model.WebHome]] and the Registry Service API. It denotes a data or metadata registration document.
71 +)))
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