Changes for page 3 SDMX Base Package

Last modified by Helena K. on 2026/06/08 16:18

From 40.2 to 40.3 From 40.4 to 40.5

From version 40.3

edited by Helena K.
on 2026/06/08 16:09

Change comment: There is no comment for this version

To version 40.4

edited by Helena K.
on 2026/06/08 16:10

Change comment: There is no comment for this version

Raw
Rendered

Summary

Page properties (1 modified, 0 added, 0 removed)

Details

Page properties

Content

@@ -143,9 +143,9 @@
  === 3.5.1 Context ===
--The Item Scheme is a basic architectural pattern that allows the creation of list schemes for use in simple taxonomies, for example.
++The [[Item Scheme>>doc:sdmx:Glossary 2\.1.Item scheme.WebHome]] is a basic architectural pattern that allows the creation of list schemes for use in simple taxonomies, for example.
--The //ItemScheme// is the basis for CategoryScheme, Codelist, ConceptScheme, ReportingTaxonomy, //OrganisationScheme//, TransformationScheme, CustomTypeScheme, NamePersonalisationScheme, RulesetScheme, VtlMappingScheme and UserDefinedOperatorScheme.
++The //ItemScheme// is the basis for CategoryScheme, [[Codelist>>doc:sdmx:Glossary 2\.1.Code list.WebHome]], ConceptScheme, ReportingTaxonomy, //OrganisationScheme//, TransformationScheme, CustomTypeScheme, NamePersonalisationScheme, RulesetScheme, VtlMappingScheme and UserDefinedOperatorScheme.
  === 3.5.2 Class Diagram ===
@@ -157,15 +157,15 @@
  ==== 3.5.3.1 Narrative ====
--The //ItemScheme// is an abstract class which defines a set of //Item// (this class is also abstract). Its main purpose is to define a mechanism which can be used to create taxonomies which can classify other parts of the SDMX Information Model. It is derived from //MaintainableArtefact// which gives it the ability to be annotated, have identity, naming, versioning and be associated with an Agency. An example of a concrete class is a ConceptScheme. The associated Concepts are //Item//s.
++The //ItemScheme// is an abstract class which defines a set of //Item// (this class is also abstract). Its main purpose is to define a mechanism which can be used to create taxonomies which can classify other parts of the [[SDMX Information Model>>doc:sdmx:Glossary 2\.1.SDMX Information Model.WebHome]]. It is derived from //MaintainableArtefact// which gives it the ability to be annotated, have identity, naming, versioning and be associated with an Agency. An example of a concrete class is a ConceptScheme. The associated [[Concepts>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] are //Item//s.
--In an exchange environment an //ItemScheme// is allowed to contain a sub-set of the //Item//s in the maintained //ItemScheme//. If such an ItemScheme is disseminated with a sub-set of the //Item//s then the fact that this is a sub-set is denoted by setting the isPartial attribute to "true".
++In an exchange environment an //ItemScheme// is allowed to contain a sub-set of the //Item//s in the maintained //ItemScheme//. If such an ItemScheme is disseminated with a sub-set of the //Item//s then the fact that this is a sub-set is denoted by setting the isPartial [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] to "true".
--A “partial” //ItemScheme// cannot be maintained independently in its partial form i.e., it cannot contain //Item//s that are not present in the full //ItemScheme// and the content of any one //Item //(e.g., names and descriptions) cannot deviate from the content in the full //ItemScheme//. Furthermore, the id of the //ItemScheme// where isPartial is set to "true" is the same as the id of the full //ItemScheme// (agencyId, id, version). This is important as this is the id that that is referenced in other structures (e.g., a Codelist referenced in a DSD) and this id is always the same, regardless of whether the disseminated //ItemScheme// is the full //ItemScheme// or a partial //ItemScheme//.
++A “partial” //ItemScheme// cannot be maintained independently in its partial form i.e., it cannot contain //Item//s that are not present in the full //ItemScheme// and the content of any one //Item //(e.g., names and descriptions) cannot deviate from the content in the full //ItemScheme//. Furthermore, the id of the //ItemScheme// where isPartial is set to "true" is the same as the id of the full //ItemScheme// (agencyId, id, [[version>>doc:sdmx:Glossary 2\.1.Version.WebHome]]). This is important as this is the id that that is referenced in other structures (e.g., a [[Codelist>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] referenced in a [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]) and this id is always the same, regardless of whether the disseminated //ItemScheme// is the full //ItemScheme// or a partial //ItemScheme//.
--The purpose of a partial //ItemScheme// is to support the exchange and dissemination of a subset //ItemScheme// without the need to maintain multiple //ItemScheme//s which contain the same //Item//s. For instance, when a Codelist is used in a DataStructureDefinition it is sometimes the case that only a sub-set of the Codes in a Codelist are relevant. In this case a partial Codelist can be constructed using the Constraint mechanism explained later in this document.
++The purpose of a partial //ItemScheme// is to support the exchange and dissemination of a subset //ItemScheme// without the need to maintain multiple //ItemScheme//s which contain the same //Item//s. For instance, when a [[Codelist>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] is used in a DataStructureDefinition it is sometimes the case that only a sub-set of the [[Codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] in a [[Codelist>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] are relevant. In this case a partial [[Codelist>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] can be constructed using the [[Constraint>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] mechanism explained later in this document.
--//Item// inherits from //NameableArtefact// which gives it the ability to be annotated and have identity, and therefore has id, uri and urn attributes, a name and a description in the form of an InternationalString. Unlike the parent //ItemScheme//, the //Item// itself is not a //MaintainableArtefact// and therefore cannot have an independent Agency (i.e., it implicitly has the same agencyId as the //ItemScheme//).
++//Item// inherits from //NameableArtefact// which gives it the ability to be annotated and have identity, and therefore has id, uri and urn [[attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]], a name and a description in the form of an InternationalString. Unlike the parent //ItemScheme//, the //Item// itself is not a //MaintainableArtefact// and therefore cannot have an independent Agency (i.e., it implicitly has the same agencyId as the //ItemScheme//).
  The //Item// can be hierarchic and so one //Item// can have child //Item//s. The restriction of the hierarchic association is that a child //Item// can have only parent //Item//.