Changes for page 8 Hierarchy
Last modified by Helena K. on 2026/06/08 17:11
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... ... @@ -1,0 +1,1 @@ 1 +Artefact|Attribute|Code|Code list|Dataflow|Dimension|Hierarchical code|Hierarchy|Identifiable artefact|Level|Maintenance agency - Content
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... ... @@ -6,13 +6,15 @@ 6 6 7 7 The [[Codelist>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] described in the section on structural definitions supports a simple [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] of [[Codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] and restricts any child [[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] to having just one parent [[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]]. Whilst this structure is useful for supporting the needs of the DataStructureDefinition and the MetadataStructureDefinition, it may not be sufficient for supporting the more complex associations between [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] that are often found in coding schemes such as a [[classification>>doc:sdmx:Glossary 2\.1.Statistical Classification.WebHome]] scheme. Often, the [[Codelist>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] used in a DataStructureDefinition is derived from a more complex coding scheme. Access to such a coding scheme can aid applications, such as OLAP applications or data visualisation systems, to give more views of the data than would be possible with the simple [[Codelist>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] used in the DataStructureDefinition. A [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] may be linked to an IndentifiableArtefact, in order to assist. 8 8 9 -Note that a [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] is not necessarily a balanced tree. A balanced tree is where [[levels>>doc:sdmx:Glossary 2\.1.Level.WebHome]] are pre-defined and fixed, (i.e. a [[level>>doc:sdmx:Glossary 2\.1.Level.WebHome]] always has the same set of [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]], and any [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] has a fixed parent and child relationship to other [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]]). A [[statistical classification>>doc:sdmx:Glossary 2\.1.Statistical Classification.WebHome]] is an example of a balanced tree, and the support for a balanced [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] is a subset, and special case, of [[hierarchies>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]].9 +Note that a [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] is not necessarily a balanced tree. A balanced tree is where 10 10 11 +(% style="color:#e74c3c" %)levels(%%) are pre-defined and fixed, (i.e. a (% style="color:#e74c3c" %)level(%%) always has the same set of [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]], and any [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] has a fixed parent and child relationship to other [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]]). A [[statistical classification>>doc:sdmx:Glossary 2\.1.Statistical Classification.WebHome]] is an example of a balanced tree, and the support for a balanced [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] is a subset, and special case, of [[hierarchies>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]]. 12 + 11 11 The principal features of the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] are: 12 12 13 13 1. A child [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] can have more than one parent. 14 14 1. There can be more than one [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] that has no parent (i.e. more than one “root node”). 15 -1. The [[levels>>doc:sdmx:Glossary2\.1.Level.WebHome]]in a [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] can be explicitly defined or they can be implicit: i.e. they exist only as parent/child relationships in the coding structure.17 +1. The (% style="color:#e74c3c" %)levels(%%) in a [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] can be explicitly defined or they can be implicit: i.e. they exist only as parent/child relationships in the coding structure. 16 16 1. [[Hierarchies>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] may be associated to the structures they refer to, via the HierarchyAssociation. 17 17 18 18 == 8.2 Inheritance == ... ... @@ -27,7 +27,7 @@ 27 27 28 28 ==== 8.2.2.1 Narrative ==== 29 29 30 -The [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] and //HierarchyAssociation// inherit from //MaintainableArtefact// and thus have identification, naming, versioning and a [[maintenance agency>>doc:sdmx:Glossary 2\.1.Maintenance agency.WebHome]]. The [[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]]is a //NameableArtefact// and therefore has an Id, multi-lingual name and multi-lingual description. A //HierachicalCode// is an //IdentifiableArtefact//.32 +The [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] and //HierarchyAssociation// inherit from //MaintainableArtefact// and thus have identification, naming, versioning and a [[maintenance agency>>doc:sdmx:Glossary 2\.1.Maintenance agency.WebHome]]. The (% style="color:#e74c3c" %)Level(%%) is a //NameableArtefact// and therefore has an Id, multi-lingual name and multi-lingual description. A //HierachicalCode// is an //IdentifiableArtefact//. 31 31 32 32 It is important to understand that the [[Codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] participating in a [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] are not themselves contained in the list – they are referenced from the list and are maintained in one or more [[Codelists>>doc:sdmx:Glossary 2\.1.Code list.WebHome]]. This is explained in the narrative of the relationship class diagram below. 33 33 ... ... @@ -53,47 +53,49 @@ 53 53 1. The [[Codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] in the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] are not themselves a part of the [[artefact>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]], rather they are references to [[Codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] in one or more external [[Codelists>>doc:sdmx:Glossary 2\.1.Code list.WebHome]]. 54 54 1. The [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] of [[Codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] is specified in HierarchicalCode. This references the [[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] and its immediate child HierarchicalCodes. 55 55 56 -A [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] can have formal [[levels>>doc:sdmx:Glossary2\.1.Level.WebHome]](hasFormalLevels="true"). However, even if hasFormalLevels="false" the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] can still have one or more[[Levels>>doc:sdmx:Glossary2\.1.Level.WebHome]]associated in order to document information about the HierarchicalCodes.58 +A [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] can have formal (% style="color:#e74c3c" %)levels(%%) (hasFormalLevels="true"). However, even if hasFormalLevels="false" the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] can still have one or more (% style="color:#e74c3c" %)Levels(%%) associated in order to document information about the HierarchicalCodes. 57 57 58 -If hasFormalLevels="false" the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] is “value based” comprising a [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] of [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] with no formal [[Levels>>doc:sdmx:Glossary2\.1.Level.WebHome]].If hasFormalLevels="true" then the [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] is “[[level>>doc:sdmx:Glossary2\.1.Level.WebHome]]based” where each[[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]]is a formal[[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]]in the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]], such as those present in [[statistical classifications>>doc:sdmx:Glossary 2\.1.Statistical Classification.WebHome]]. In a “[[level>>doc:sdmx:Glossary2\.1.Level.WebHome]]based” [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] each HierarchicalCode is linked to the[[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]]in which it resides. It is expected that all HierarchicalCodes at the same hierarchic[[level>>doc:sdmx:Glossary2\.1.Level.WebHome]]defined by the +parent/+child association will be linked to the same[[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]].Note that the +[[level>>doc:sdmx:Glossary2\.1.Level.WebHome]]association need only be specified if the HierarchicalCode is at a different hierarchical[[level>>doc:sdmx:Glossary2\.1.Level.WebHome]](implied by the HierarchicalCode parent/child association) than the actual[[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]]in the[[level>>doc:sdmx:Glossary2\.1.Level.WebHome]][[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] (implied by the[[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]]parent/child association).60 +If hasFormalLevels="false" the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] is “value based” comprising a [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] of [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] with no formal (% style="color:#e74c3c" %)Levels(%%). If hasFormalLevels="true" then the [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] is “(% style="color:#e74c3c" %)level(%%) based” where each (% style="color:#e74c3c" %)Level(%%) is a formal (% style="color:#e74c3c" %)Level(%%) in the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]], such as those present in [[statistical classifications>>doc:sdmx:Glossary 2\.1.Statistical Classification.WebHome]]. In a “(% style="color:#e74c3c" %)level(%%) based” [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] each HierarchicalCode is linked to the (% style="color:#e74c3c" %)Level(%%) in which it resides. It is expected that all HierarchicalCodes at the same hierarchic (% style="color:#e74c3c" %)level(%%) defined by the +parent/+child association will be linked to the same (% style="color:#e74c3c" %)Level(%%). Note that the +(% style="color:#e74c3c" %)level(%%) association need only be specified if the HierarchicalCode is at a different hierarchical (% style="color:#e74c3c" %)level(%%) (implied by the HierarchicalCode parent/child association) than the actual (% style="color:#e74c3c" %)Level(%%) in the (% style="color:#e74c3c" %)level(%%) [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] (implied by the (% style="color:#e74c3c" %)Level(%%) parent/child association). 59 59 60 -[Note that organisations wishing to be compliant with accepted models for [[statistical classifications>>doc:sdmx:Glossary 2\.1.Statistical Classification.WebHome]] should ensure that the Id is the number associated with the [[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]], where[[Levels>>doc:sdmx:Glossary2\.1.Level.WebHome]]are numbered consecutively starting with[[level>>doc:sdmx:Glossary2\.1.Level.WebHome]]1 at the highest[[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]]].62 +[Note that organisations wishing to be compliant with accepted models for [[statistical classifications>>doc:sdmx:Glossary 2\.1.Statistical Classification.WebHome]] should ensure that the Id is the number associated with the (% style="color:#e74c3c" %)Level(%%), where (% style="color:#e74c3c" %)Levels(%%) are numbered consecutively starting with (% style="color:#e74c3c" %)level(%%) 1 at the highest (% style="color:#e74c3c" %)Level(%%)]. 61 61 62 -The [[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]]may have CodingFormat information defined (e.g. coding type at that[[level>>doc:sdmx:Glossary2\.1.Level.WebHome]]).64 +The (% style="color:#e74c3c" %)Level(%%) may have CodingFormat information defined (e.g. coding type at that (% style="color:#e74c3c" %)level(%%)). 63 63 64 64 A HierarchyAssociation links an IdentifiableArtefact (+linkedObject), that needs a [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]], with the latter (+linkedHierarchy). The association is performed in a certain context (+contextObject), e.g. a [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] in the context of a [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]. 65 65 66 -==== 8.3.2.2 Definitions====68 +==== 8.3.2.2 ==== 67 67 70 +==== Definitions ==== 71 + 68 68 (% style="width:901.835px" %) 69 69 |**Class**|**Feature**|(% style="width:564px" %)**Description** 70 70 |[[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]]|((( 71 71 Inherits from: 72 72 //MaintainableArtefact// 73 -)))|(% style="width:564px" %)A [[classification>>doc:sdmx:Glossary 2\.1.Statistical Classification.WebHome]] structure arranged in [[levels>>doc:sdmx:Glossary2\.1.Level.WebHome]]of detail from the broadest to the most detailed[[level>>doc:sdmx:Glossary2\.1.Level.WebHome]].77 +)))|(% style="width:564px" %)A [[classification>>doc:sdmx:Glossary 2\.1.Statistical Classification.WebHome]] structure arranged in (% style="color:#e74c3c" %)levels(%%) of detail from the broadest to the most detailed (% style="color:#e74c3c" %)level(%%). 74 74 | |hasFormalLevels|(% style="width:564px" %)((( 75 -If “true”, this indicates a [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] where the structure is arranged in [[levels>>doc:sdmx:Glossary2\.1.Level.WebHome]]of detail from the broadest to the most detailed[[level>>doc:sdmx:Glossary2\.1.Level.WebHome]].79 +If “true”, this indicates a [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] where the structure is arranged in (% style="color:#e74c3c" %)levels(%%) of detail from the broadest to the most detailed (% style="color:#e74c3c" %)level(%%). 76 76 77 -If “false”, this indicates a [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] structure where the items in the [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] have no formal [[level>>doc:sdmx:Glossary2\.1.Level.WebHome]]structure.81 +If “false”, this indicates a [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] structure where the items in the [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] have no formal (% style="color:#e74c3c" %)level(%%) structure. 78 78 ))) 79 -| |+codes|(% style="width:564px" %)Association to the top- [[level>>doc:sdmx:Glossary2\.1.Level.WebHome]][[Hierarchical Codes>>doc:sdmx:Glossary 2\.1.Hierarchical code.WebHome]] in the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]].80 -| |+level|(% style="width:564px" %)Association to the top [[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]]in the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]].81 -| [[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]]|(((83 +| |+[[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]]|(% style="width:564px" %)Association to the top-(% style="color:#e74c3c" %)level(%%) [[Hierarchical Codes>>doc:sdmx:Glossary 2\.1.Hierarchical code.WebHome]] in the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]]. 84 +| |+(% style="color:#e74c3c" %)level|(% style="width:564px" %)Association to the top (% style="color:#e74c3c" %)Level(%%) in the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]]. 85 +|(%%)(% style="color:#e74c3c" %)Level|((( 82 82 Inherits from 83 83 //NameableArtefact// 84 84 )))|(% style="width:564px" %)((( 85 -In a “ [[level>>doc:sdmx:Glossary2\.1.Level.WebHome]]based” [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] this describes a group of [[Codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] which are characterised by homogeneous coding, and where the parent of each [[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] in the group is at the same higher[[level>>doc:sdmx:Glossary2\.1.Level.WebHome]]of the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]].86 -In a “value based’ [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] this describes information about the [[Hierarchical Codes>>doc:sdmx:Glossary 2\.1.Hierarchical code.WebHome]] at the specified nesting [[level>>doc:sdmx:Glossary2\.1.Level.WebHome]].89 +In a “(% style="color:#e74c3c" %)level(%%) based” [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] this describes a group of [[Codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] which are characterised by homogeneous coding, and where the parent of each [[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] in the group is at the same higher (% style="color:#e74c3c" %)level(%%) of the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]]. 90 +In a “value based’ [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] this describes information about the [[Hierarchical Codes>>doc:sdmx:Glossary 2\.1.Hierarchical code.WebHome]] at the specified nesting (% style="color:#e74c3c" %)level(%%). 87 87 ))) 88 88 | |+codeFormat|(% style="width:564px" %)Association to the [[Coding Format>>doc:sdmx:Glossary 2\.1.Coding format.WebHome]]. 89 -| |+child|(% style="width:564px" %)Association to a child [[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]]of[[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]].90 -|CodingFormat| |(% style="width:564px" %)Specifies format information for the [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] at this [[level>>doc:sdmx:Glossary2\.1.Level.WebHome]]in the [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] such as whether the [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] at the[[level>>doc:sdmx:Glossary2\.1.Level.WebHome]]are alphabetic, numeric or alphanumeric and the [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] length.93 +| |+child|(% style="width:564px" %)Association to a child (% style="color:#e74c3c" %)Level(%%) of (% style="color:#e74c3c" %)Level(%%). 94 +|CodingFormat| |(% style="width:564px" %)Specifies format information for the [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] at this (% style="color:#e74c3c" %)level(%%) in the [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]] such as whether the [[codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] at the (% style="color:#e74c3c" %)level(%%) are alphabetic, numeric or alphanumeric and the [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] length. 91 91 |HierarchicalCode| |(% style="width:564px" %)A hierarchic structure of [[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] references. 92 92 | |validFrom|(% style="width:564px" %)Date from which the construct is valid 93 93 | |validTo|(% style="width:564px" %)Date from which construct is superseded. 94 -| |+code|(% style="width:564px" %)Association to the [[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] that is used at the specific point in the [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]]. 98 +| |+[[code>>doc:sdmx:Glossary 2\.1.Code.WebHome]]|(% style="width:564px" %)Association to the [[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] that is used at the specific point in the [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]]. 95 95 | |+child|(% style="width:564px" %)Association to a child [[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] in the [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]]. 96 -| |+level|(% style="width:564px" %)Association to a [[Level>>doc:sdmx:Glossary2\.1.Level.WebHome]]where[[levels>>doc:sdmx:Glossary2\.1.Level.WebHome]]have been defined for the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]].100 +| |+(% style="color:#e74c3c" %)level|(% style="width:564px" %)Association to a (% style="color:#e74c3c" %)Level(%%) where (% style="color:#e74c3c" %)levels(%%) have been defined for the [[Hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]]. 97 97 |[[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]]| |(% style="width:564px" %)The [[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]] to be used at this point in the [[hierarchy>>doc:sdmx:Glossary 2\.1.Hierarchy.WebHome]]. 98 98 | |/items|(% style="width:564px" %)Association to the [[Code list>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] containing the [[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]]. 99 99 |[[Codelist>>doc:sdmx:Glossary 2\.1.Code list.WebHome]]| |(% style="width:564px" %)The [[Code list>>doc:sdmx:Glossary 2\.1.Code list.WebHome]] containing the [[Code>>doc:sdmx:Glossary 2\.1.Code.WebHome]].