Changes for page 5 Data Structure Definition and Dataset

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	1	+Artefact|Attribute|Attribute Relationship|Codelist|Constraint|Cкуп података|Data Provider|Data Set|Data Source|Data Structure Definition|Economic activity|Group Key|Maintenance agency|Metadata Set|Metadata Structure Definition|Reference area|Reference metadata|Reference period|SDMX Information Model|Series|Series Key|Statistical Data and Metadata eXchange|Structural metadata|Time period

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1		-=== 5.1 Introduction ===
	1	+{{box title="**Contents**"}}
	2	+{{toc/}}
	3	+{{/box}}
2	2
3		-The DataStructureDefiniton is the class name for a structure definition for data. Some organisations know this type of definition as a “Key Family” and so the two names are synonymous. The term Data Structure Definition (also referred to as DSD) is used in this specification.
	5	+== 5.1 Introduction ==
4	4
5		-Many of the constructs in this layer of the model inherit from the SDMX Base Layer. Therefore, it is necessary to study both the inheritance and the relationship diagrams to understand the functionality of individual packages. In simple sub models these are shown in the same diagram but are omitted from the more complex sub models for the sake of clarity. In these cases, the inheritance diagram below shows the full inheritance tree for the classes concerned with data structure definitions.
	7	+The DataStructureDefiniton is the class name for a structure definition for data. Some organisations know this type of definition as a “Key Family” and so the two names are synonymous. The term [[Data Structure Definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] (also referred to as [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]) is used in this specification.
6	6
7		-There are very few additional classes in this sub model other than those shown in the inheritance diagram below. In other words, the SDMX Base gives most of the structure of this sub model both in terms of associations and in terms of attributes. The relationship diagrams shown in this section show clearly when these associations are inherited from the SDMX Base (see the Appendix “A Short Guide to UML in the SDMX Information Model” to see the diagrammatic notation used to depict this).
	9	+Many of the constructs in this layer of the model inherit from the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] Base Layer. Therefore, it is necessary to study both the inheritance and the relationship diagrams to understand the functionality of individual packages. In simple sub models these are shown in the same diagram but are omitted from the more complex sub models for the sake of clarity. In these cases, the inheritance diagram below shows the full inheritance tree for the classes concerned with [[data structure definitions>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]].
8	8
9		-The actual SDMX Base construct from which the concrete classes inherit depends upon the requirements of the class for:
	11	+There are very few additional classes in this sub model other than those shown in the inheritance diagram below. In other words, the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] Base gives most of the structure of this sub model both in terms of associations and in terms of [[attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]]. The relationship diagrams shown in this section show clearly when these associations are inherited from the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] Base (see the Appendix “A Short Guide to UML in the [[SDMX Information Model>>doc:sdmx:Glossary 2\.1.SDMX Information Model.WebHome]]” to see the diagrammatic notation used to depict this).
10	10
11		-Annotation – //AnnotableArtefact//
	13	+The actual [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] Base construct from which the concrete classes inherit depends upon the requirements of the class for:
12	12
	15	+[[Annotation>>doc:sdmx:Glossary 2\.1.Annotation.WebHome]] – //AnnotableArtefact//
13	13	Identification – //IdentifiableArtefact//
14		-
15	15	Naming – //NameableArtefact//
16		-
17	17	Versioning – //VersionableArtefact//
18		-
19	19	Maintenance – //MaintainableArtefact//
20	20
21		-=== 5.2 Inheritance View ===
	21	+== 5.2 Inheritance View ==
22	22
23		-==== 5.2.1 Class Diagram ====
	23	+=== 5.2.1 Class Diagram ===
24	24
25		-[[image:1749246368774-202.jpeg]]
	25	+[[image:image53.png]]
26	26
27	27	**Figure 27 Class inheritance in the Data Structure Definition and Data Set Packages**
28	28
29		-===== 5.2.2 Explanation of the Diagram =====
	29	+=== 5.2.2 Explanation of the Diagram ===
30	30
31		-====== 5.2.2.1 Narrative ======
	31	+==== 5.2.2.1 Narrative ====
32	32
33		-Those classes in the SDMX metamodel which require annotations inherit from //AnnotableArtefact//. These are:
	33	+Those classes in the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] metamodel which require [[annotations>>doc:sdmx:Glossary 2\.1.Annotation.WebHome]] inherit from //AnnotableArtefact//. These are:
34	34
35		-//IdentifiableArtefact//
36		-
37		-//DataSet//
38		-
39		-//Key// (and therefore //SeriesKey// and //GroupKey//)
40		-
	35	+//IdentifiableArtefact
	36	+[[DataSet>>doc:sdmx:Glossary 2\.1.Data set.WebHome]]
	37	+Key// (and therefore //SeriesKey// and //GroupKey//)
41	41	//Observation//
42	42
43		-Those classes in the SDMX metamodel which require annotations and global identity are derived from //IdentifiableArtefact//. These are:
	40	+Those classes in the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] metamodel which require [[annotations>>doc:sdmx:Glossary 2\.1.Annotation.WebHome]] and global identity are derived from //IdentifiableArtefact//. These are:
44	44
45		-//NameableArtefact//
	42	+//NameableArtefact
	43	+ComponentList
	44	+[[Component>>doc:sdmx:Glossary 2\.1.Component.WebHome]]//
46	46
47		-//ComponentList//
	46	+Those classes in the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] metamodel which require [[annotations>>doc:sdmx:Glossary 2\.1.Annotation.WebHome]], global identity, multilingual name and multilingual description are derived from //NameableArtefact//. These are:
48	48
49		-//Component//
	48	+//VersionableArtefact
	49	+Item//
50	50
51		-Those classes in the SDMX metamodel which require annotations, global identity, multilingual name and multilingual description are derived from //NameableArtefact//. These are:
	51	+The classes in the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] metamodel which require [[annotations>>doc:sdmx:Glossary 2\.1.Annotation.WebHome]], global identity, multilingual name and multilingual description, and versioning are derived from //VersionableArtefact//. These are:
52	52
53		-//VersionableArtefact//
54		-
55		-//Item//
56		-
57		-The classes in the SDMX metamodel which require annotations, global identity, multilingual name and multilingual description, and versioning are derived from //VersionableArtefact//. These are:
58		-
59	59	//MaintainableArtefact//
60	60
61		-Abstract classes which represent information that is maintained by Maintenance Agencies all inherit from //MaintainableArtefact//, they also inherit all the features of a //VersionableArtefact//, and are:
	55	+Abstract classes which represent information that is maintained by [[Maintenance Agencies>>doc:sdmx:Glossary 2\.1.Maintenance agency.WebHome]] all inherit from //MaintainableArtefact//, they also inherit all the features of a //VersionableArtefact//, and are:
62	62
63		-//StructureUsage//
	57	+//StructureUsage
	58	+Structure
	59	+ItemScheme//
64	64
65		-//Structure//
66		-
67		-//ItemScheme//
68		-
69	69	All the above classes are abstract. The key to understanding the class diagrams presented in this section are the concrete classes that inherit from these abstract classes.
70	70
71		-Those concrete classes in the SDMX Data Structure Definition and Dataset packages of the metamodel which require to be maintained by Agencies all inherit (via other abstract classes) from //MaintainableArtefact//, these are:
	63	+Those concrete classes in the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] [[Data Structure Definition>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]] and [[Dataset>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] packages of the metamodel which require to be maintained by Agencies all inherit (via other abstract classes) from //MaintainableArtefact//, these are:
72	72
73		-Dataflow
74		-
	65	+[[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]
75	75	DataStructureDefinition
76		-
77		-The component structures that are lists of lists, inherit directly from //Structure//. A //Structure// contains several lists of components. The concrete class that inherits from //Structure// is:
78		-
	67	+The [[component>>doc:sdmx:Glossary 2\.1.Component.WebHome]] structures that are lists of lists, inherit directly from //Structure//. A //Structure// contains several lists of [[components>>doc:sdmx:Glossary 2\.1.Component.WebHome]]. The concrete class that inherits from //Structure// is:
79	79	DataStructureDefinition
80	80
81		-A DataStructureDefinition contains a list of dimensions, a list of measures and a list of attributes.
	70	+A DataStructureDefinition contains a list of [[dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]], a list of [[measures>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] and a list of [[attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]].
82	82
83	83	The concrete classes which inherit from //ComponentList// and are subcomponents of the DataStructureDefinition are:
84	84
85		-DimensionDescriptor – content is Dimension and TimeDimension
86		-
87		-DimensionGroupDescriptor – content is an association to Dimension, TimeDimension
88		-
89		-MeasureDescriptor – content is Measure
90		-
	74	+DimensionDescriptor – content is [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] and TimeDimension
	75	+DimensionGroupDescriptor – content is an association to [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]], TimeDimension
	76	+MeasureDescriptor – content is [[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]]
91	91	AttributeDescriptor – content is DataAttribute and an association to MetadataAttribute
92	92
93		-The classes that inherit from //Component// are:
	79	+The classes that inherit from //[[Component>>doc:sdmx:Glossary 2\.1.Component.WebHome]]// are:
94	94
95		-Measure
	81	+[[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]]
	82	+//DimensionComponent// and thereby its sub classes of [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] and TimeDimension
	83	+//[[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]]// and thereby its sub classes of DataAttribute and MetadataAttribute
96	96
97		-//DimensionComponent// and thereby its sub classes of Dimension and TimeDimension
98		-
99		-//Attribute// and thereby its sub classes of DataAttribute and MetadataAttribute
100		-
101	101	The concrete classes identified above are the majority of the classes required to define the metamodel for the DataStructureDefinition. The diagrams and explanations in the rest of this section show how these concrete classes are related in order to support the functionality required.
102	102
103		-==== //5.3 Data Structure Definition – Relationship View// ====
	87	+== 5.3 Data Structure Definition – Relationship View ==
104	104
105		-===== 5.3.1 Class Diagram =====
	89	+=== 5.3.1 Class Diagram ===
106	106
107		-[[image:1749246368782-690.jpeg]]
	91	+[[image:image54.png]]
108	108
109	109	**Figure 28 Relationship class diagram of the Data Structure Definition excluding representation**
110	110
111		-===== 5.3.2 Explanation of the Diagrams =====
	95	+=== 5.3.2 Explanation of the Diagrams ===
112	112
113		-====== 5.3.2.1 Narrative ======
	97	+==== 5.3.2.1 Narrative ====
114	114
115		-A DataStructureDefinition defines the Dimensions, TimeDimension, DataAttributes, and Measures, and associated Representations, that comprise the valid structure of data and related attributes that are contained in a DataSet, which is defined by a Dataflow. In addition, a DataStructureDefinition may be related to one MetadataStructureDefinition, in order to use the latter’s MetadataAttributes, by relating them to other //Components// within the DSD, as explained below.
	99	+A DataStructureDefinition defines the [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]], TimeDimension, DataAttributes, and [[Measures>>doc:sdmx:Glossary 2\.1.Measure.WebHome]], and associated [[Representations>>doc:sdmx:Glossary 2\.1.Representation.WebHome]], that comprise the valid structure of data and related [[attributes>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] that are contained in a [[DataSet>>doc:sdmx:Glossary 2\.1.Data set.WebHome]], which is defined by a [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]. In addition, a DataStructureDefinition may be related to one MetadataStructureDefinition, in order to use the latter’s MetadataAttributes, by relating them to other //[[Components>>doc:sdmx:Glossary 2\.1.Component.WebHome]]// within the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]], as explained below.
116	116
117		-The Dataflow may also have additional metadata attached that define qualitative information and Constraints on the use of the DataStructureDefinition such as the subset of Codes used in a Dimension (this is covered later in this document – see sections “Constraints” and “Data Provisioning”). Each Dataflow has a maximum of one DataStructureDefinition specified which defines the structure of any DataSets to be reported/disseminated. A Dataflow may optionally define which Dimensions it uses, by defining a DimensionConstraint (this is a mandatory requirement if the DataStructureDefinition sets its’ evolvingStructure property to ‘true’ and is sematically referenced by the Dataflow).
	101	+The [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] may also have additional metadata attached that define qualitative information and [[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]] on the use of the DataStructureDefinition such as the subset of [[Codes>>doc:sdmx:Glossary 2\.1.Code.WebHome]] used in a [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] (this is covered later in this document – see sections “[[Constraints>>doc:sdmx:Glossary 2\.1.Constraint.WebHome]]” and “Data Provisioning”). Each [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] has a maximum of one DataStructureDefinition specified which defines the structure of any [[DataSets>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] to be reported/disseminated. A [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]] may optionally define which [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] it uses, by defining a DimensionConstraint (this is a mandatory requirement if the DataStructureDefinition sets its’ evolvingStructure property to ‘true’ and is sematically referenced by the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]]).
118	118
119		-There are two types of dimensions each having a common association to Concept:
	103	+There are two types of [[dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] each having a common association to [[Concept>>doc:sdmx:Glossary 2\.1.Concept.WebHome]]:
120	120
121		-* Dimension
	105	+* [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]]
122	122	* TimeDimension
123	123
124		-Note that DimensionComponent can be any or all its sub classes i.e., Dimension, TimeDimension.
	108	+Note that DimensionComponent can be any or all its sub classes i.e., [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]], TimeDimension.
125	125
126		-The //DimensionComponent//, DataAttribute, MetadataAttribute and Measure link to the Concept that defines its name and semantic (/conceptIdentity association to Concept). The DataAttribute, Dimension (but not TimeDimension) and Measure can optionally have a +conceptRole association with a Concept that identifies its role in the DataStructureDefinition, or one of the standard pre-defined roles, i.e., those published in "GUIDELINES FOR SDMX CONCEPT ROLES" by the SDMX SWG. The use of these roles is to enable applications to process the data in a meaningful way (e.g., relating a dimension value to a mapping vector). It is expected, beyond the standard roles published by the SWG, that communities (such as the official statistics community) will harmonise such roles within their community so that data can be exchanged and shared in a meaningful way within that community.
	110	+The //DimensionComponent//, DataAttribute, MetadataAttribute and [[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] link to the [[Concept>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] that defines its name and semantic (/conceptIdentity association to [[Concept>>doc:sdmx:Glossary 2\.1.Concept.WebHome]]). The DataAttribute, [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] (but not TimeDimension) and [[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] can optionally have a +conceptRole association with a [[Concept>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] that identifies its role in the DataStructureDefinition, or one of the standard pre-defined roles, i.e., those published in "GUIDELINES FOR [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] [[CONCEPT>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] ROLES" by the [[SDMX>>doc:sdmx:Glossary 2\.1.Statistical data and metadata exchange.WebHome]] SWG. The use of these roles is to enable applications to process the data in a meaningful way (e.g., relating a [[dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] value to a mapping vector). It is expected, beyond the standard roles published by the SWG, that communities (such as the official statistics community) will harmonise such roles within their community so that data can be exchanged and shared in a meaningful way within that community.
127	127
128		-The valid values for a //DimensionComponent//, Measure, DataAttribute or MetadataAttribute, when used in this DataStructureDefinition, are defined by the Representation. This Representation is taken from the Concept definition (coreRepresentation) unless it is overridden in this DataStructureDefinition (localRepresentation) – see Figure 28. Note also that TimeDimension is constrained to specific FacetValueTypes. Moreover, the Representations of MetadataAttributes are specified in the corresponding MetadataStructureDefinition, linked by the DataStructureDefinition.
	112	+The valid values for a //DimensionComponent//, [[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]], DataAttribute or MetadataAttribute, when used in this DataStructureDefinition, are defined by the [[Representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]]. This [[Representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] is taken from the [[Concept>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] definition (coreRepresentation) unless it is overridden in this DataStructureDefinition (localRepresentation) – see Figure 28. Note also that TimeDimension is constrained to specific FacetValueTypes. Moreover, the [[Representations>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] of MetadataAttributes are specified in the corresponding MetadataStructureDefinition, linked by the DataStructureDefinition.
129	129
130		-There will always be a DimensionDescriptor grouping that identifies all of the Dimension comprising the full key. Together the Dimensions specify the key of an Observation.
	114	+There will always be a DimensionDescriptor grouping that identifies all of the [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] comprising the full key. Together the [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] specify the key of an Observation.
131	131
132		-The //DimensionComponent// can optionally be grouped by multiple GroupDimensionDescriptors each of which identifies the group of Dimensions that can form a partial key. The GroupDimensionDescriptor must be identified (GroupDimensionDescriptor.id) and this is used in the GroupKey of the DataSet to declare which DataAttributes or MetadataAttributes are reported at this group level in the DataSet.
	116	+The //DimensionComponent// can optionally be grouped by multiple GroupDimensionDescriptors each of which identifies the group of [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] that can form a partial key. The GroupDimensionDescriptor must be identified (GroupDimensionDescriptor.id) and this is used in the GroupKey of the [[DataSet>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] to declare which DataAttributes or MetadataAttributes are reported at this group level in the [[DataSet>>doc:sdmx:Glossary 2\.1.Data set.WebHome]].
133	133
134		-There can be a maximum of one TimeDimension specified in the DimensionDescriptor. The TimeDimension is used to specify the Concept used to convey the time period of the observation in a data set. The TimeDimension must contain a valid representation of time and cannot be coded.
	118	+There can be a maximum of one TimeDimension specified in the DimensionDescriptor. The TimeDimension is used to specify the [[Concept>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] used to convey the [[time period>>doc:sdmx:Glossary 2\.1.Time period.WebHome]] of the observation in a [[data set>>doc:sdmx:Glossary 2\.1.Data set.WebHome]]. The TimeDimension must contain a valid [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]] of time and cannot be coded.
135	135
136		-There can be one or more Measures under the MeasureDescriptor. Measures represent the observable phenomena. Each Measure may have a valid representation, a maxOccurs attribute limiting the maximum number of values per Measure (which may be set to 'unbounded' for unlimited occurrences), as well as a minOccurs attribute, indicating the minimum required number of values, when the Measure is reported. If minOccurs or maxOccurs are omitted (they both default to ‘1’), the Measure is considered to take a single value; otherwise, it is an array. Moreover, the usage attribute indicates whether a Measure must be reported or not, by the corresponding values: mandatory or optional.
	120	+There can be one or more [[Measures>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] under the MeasureDescriptor. [[Measures>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] represent the observable phenomena. Each [[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] may have a valid [[representation>>doc:sdmx:Glossary 2\.1.Representation.WebHome]], a maxOccurs [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] limiting the maximum number of values per [[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] (which may be set to 'unbounded' for unlimited occurrences), as well as a minOccurs [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]], indicating the minimum required number of values, when the [[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] is reported. If minOccurs or maxOccurs are omitted (they both default to ‘1’), the [[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] is considered to take a single value; otherwise, it is an array. Moreover, the usage [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] indicates whether a [[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] must be reported or not, by the corresponding values: mandatory or optional.
137	137
138		-The AttributeDescriptor may contain one or more //Attribute//s, i.e., at least one DataAttribute definition or one MetadataAttribute reference.
	122	+The AttributeDescriptor may contain one or more //[[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]]//s, i.e., at least one DataAttribute definition or one MetadataAttribute reference.
139	139
140		-The DataAttribute defines a characteristic of data that are collected or disseminated and is grouped in the DataStructureDefinition by a single AttributeDescriptor. The DataAttribute can be indicated if it must be reported or not, by the corresponding value of the usage attribute: i.e., mandatory or optional. The property minOccurs specifies the minimum number of array values to be included when the DataAttribute is reported. Moreover, a maxOccurs attribute indicates whether the DataAttribute may need to report more than one values, i.e., an array of values. The DataAttribute may play a specific role in the structure and this is specified by the +role association to the Concept that identifies its role.
	124	+The DataAttribute defines a characteristic of data that are collected or disseminated and is grouped in the DataStructureDefinition by a single AttributeDescriptor. The DataAttribute can be indicated if it must be reported or not, by the corresponding value of the usage [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]]: i.e., mandatory or optional. The property minOccurs specifies the minimum number of array values to be included when the DataAttribute is reported. Moreover, a maxOccurs [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] indicates whether the DataAttribute may need to report more than one values, i.e., an array of values. The DataAttribute may play a specific role in the structure and this is specified by the +role association to the [[Concept>>doc:sdmx:Glossary 2\.1.Concept.WebHome]] that identifies its role.
141	141
142		-The MetadataAttribute defines reference metadata that may be collected or disseminated and is grouped together with DataAttribute under the AttributeDescriptor.
	126	+The MetadataAttribute defines [[reference metadata>>doc:sdmx:Glossary 2\.1.Reference metadata.WebHome]] that may be collected or disseminated and is grouped together with DataAttribute under the AttributeDescriptor.
143	143
144		-A DataAttribute or a MetadataAttribute (i.e., an //AttributeComponent//) is specified as being +relatedTo an AttributeRelationship, which defines the constructs to which the //AttributeComponent// is to be reported within a //DataSet//. An //AttributeComponent// can be specified as being related to one of the following artefacts:
	128	+A DataAttribute or a MetadataAttribute (i.e., an //AttributeComponent//) is specified as being +relatedTo an AttributeRelationship, which defines the constructs to which the //AttributeComponent// is to be reported within a //[[DataSet>>doc:sdmx:Glossary 2\.1.Data set.WebHome]]//. An //AttributeComponent// can be specified as being related to one of the following [[artefacts>>doc:sdmx:Glossary 2\.1.Artefact.WebHome]]:
145	145
146		-* All data within the dataset (DataflowRelationship) – this is equivalent to attaching an Attribute to all data within the Dataflow.
147		-* Dimension or set of Dimensions (DimensionRelationship)
148		-* Set of Dimensions specified by a GroupKey (GroupRelationship – this is retained for compatibility reasons – or +groupKey of the DimensionRelationship)
	130	+* All data within the [[dataset>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] (DataflowRelationship) – this is equivalent to attaching an [[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] to all data within the [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]].
	131	+* [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] or set of [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] (DimensionRelationship)
	132	+* Set of [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] specified by a GroupKey (GroupRelationship – this is retained for compatibility reasons – or +groupKey of the DimensionRelationship)
149	149	* Observation (ObservationRelationship)
150		-* In addition to the positioning of an //AttributeComponent// within a //DataSet//, another relationship indicates the Measure(s) for which the //AttributeComponent// is reported. Regardless of the position of the //AttributeComponent// within the //DataSet//, the //AttributeComponent// may concern one, more than one, or all Measures included in the DSD. This is expressed using the MeasureRelationship class, which relates a DataAttribute to one or more Measures. Lack of the MeasureRelationship defaults to a relationship to all Measures.
	134	+* In addition to the positioning of an //AttributeComponent// within a //[[DataSet>>doc:sdmx:Glossary 2\.1.Data set.WebHome]]//, another relationship indicates the [[Measure>>doc:sdmx:Glossary 2\.1.Measure.WebHome]](s) for which the //AttributeComponent// is reported. Regardless of the position of the //AttributeComponent// within the //[[DataSet>>doc:sdmx:Glossary 2\.1.Data set.WebHome]]//, the //AttributeComponent// may concern one, more than one, or all [[Measures>>doc:sdmx:Glossary 2\.1.Measure.WebHome]] included in the [[DSD>>doc:sdmx:Glossary 2\.1.Data structure definition.WebHome]]. This is expressed using the MeasureRelationship class, which relates a DataAttribute to one or more [[Measures>>doc:sdmx:Glossary 2\.1.Measure.WebHome]]. Lack of the MeasureRelationship defaults to a relationship to all [[Measures>>doc:sdmx:Glossary 2\.1.Measure.WebHome]].
151	151
152		-[[image:1749246368785-499.jpeg]]
	136	+[[image:image55.png]]
153	153
154	154	**Figure 29: Attribute Attachment Defined in the Data Structure Definition**
155	155
156	156	The following table details the possible relationships a DataAttribute may specify. Note that these relationships are mutually exclusive, and therefore only one of the following is possible.
157	157
158		-|**Relationship**|**Meaning**|**Location in Data Set at which the Attribute is reported**
159		-|DataflowRelationship|The value of the attribute is fixed for all data contained in the dataset. The Attribute value applies to all data defined by the underlying Dataflow.|The attribute is reported at the Dataset level.
160		-|Dimension (1..n)|The value of the attribute will vary with the value(s) of the referenced Dimension(s). In this case, Group(s) to which the attribute should be attached may optionally be specified.|The attribute is reported at the lowest level of the Dimension to which the Attribute is related, otherwise at the level of the Group if Attachment Group(s) is specified.
161		-|Group|The value of the Attribute varies with combination of values for all of the Dimensions contained in the Group. This is added as a convenience to listing all Dimensions and the attachment Group, but should only be used when the Attribute value varies based on all Group Dimension values.|The attribute is reported at the level of Group.
162		-|Observation|The value of the Attribute varies with the observed value.|The attribute is reported at the level of Observation.
	142	+(% style="width:1142.83px" %)
	143	+|**Relationship**|(% style="width:537px" %)**Meaning**|(% style="width:434px" %)**Location in Data Set at which the Attribute is reported**
	144	+|DataflowRelationship|(% style="width:537px" %)The value of the [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] is fixed for all data contained in the [[dataset>>doc:sdmx:Glossary 2\.1.Data set.WebHome]]. The [[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] value applies to all data defined by the underlying [[Dataflow>>doc:sdmx:Glossary 2\.1.Dataflow.WebHome]].|(% style="width:434px" %)The [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] is reported at the [[Dataset>>doc:sdmx:Glossary 2\.1.Data set.WebHome]] level.
	145	+|[[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] (1..n)|(% style="width:537px" %)The value of the [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] will vary with the value(s) of the referenced [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]](s). In this case, Group(s) to which the [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] should be attached may optionally be specified.|(% style="width:434px" %)The [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] is reported at the lowest (% style="color:#e74c3c" %)l(%%)evel of the [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] to which the [[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] is related, otherwise at the level of the Group if Attachment Group(s) is specified.
	146	+|Group|(% style="width:537px" %)The value of the [[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] varies with combination of values for all of the [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] contained in the Group. This is added as a convenience to listing all [[Dimensions>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] and the attachment Group, but should only be used when the [[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] value varies based on all Group [[Dimension>>doc:sdmx:Glossary 2\.1.Dimension.WebHome]] values.|(% style="width:434px" %)The [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] is reported at the level of Group.
	147	+|Observation|(% style="width:537px" %)The value of the [[Attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] varies with the observed value.|(% style="width:434px" %)The [[attribute>>doc:sdmx:Glossary 2\.1.Attribute.WebHome]] is reported at the level of Observation.
163	163
164		-[[image:1749246368790-555.jpeg]]
	149	+[[image:image56.png]]
165	165
166	166	**Figure 30: Representation of DSD Components**
167	167
...	...	@@ -169,134 +169,113 @@
169	169
170	170	A DataStructureDefinition can be extended to form a derived DataStructureDefinition. This is supported in the StructureMap.
171	171
172		-**5.3.2.2 Definitions**
	157	+==== 5.3.2.2 Definitions ====
173	173
174		-|**Class**|**Feature**|**Description**
175		-|StructureUsage| |See “SDMX Base”.
176		-|Dataflow|(((
	159	+(% style="width:981.835px" %)
	160	+|(% style="width:204px" %)**Class**|(% style="width:236px" %)**Feature**|(% style="width:538px" %)**Description**
	161	+|(% style="width:204px" %)StructureUsage|(% style="width:236px" %) |(% style="width:538px" %)See “SDMX Base”.
	162	+|(% style="width:204px" %)Dataflow|(% style="width:236px" %)(((
177	177	Inherits from
178	178
179	179	//StructureUsage//
180		-)))|Abstract concept (i.e., the structure without any data) of a flow of data that providers will provide for different reference periods.
181		-| |/structure|Associates a Dataflow to the Data Structure Definition.
182		-| |dimensionConstraint|A list of Dimensions which the Dataflow uses. This is only required when the referenced DataStructureDefinition has the evolvingStructure property set to true and when the association to the DataStructureDefinition in on the latest minor version[[^^~[1~]^^>>path:#_ftn1]].
183		-|DataStructureDefiniti on| |A collection of metadata concepts, their structure and usage when used to collect or disseminate data.
184		-| |/grouping|An association to a set of metadata concepts that have an identified structural role in a Data Structure Definition.
185		-| |evolvingStructure|An optional boolean property, defaulting to false. When true the DataStructureDefinition may have new Dimensions added without having to change its major version number.
186		-|GroupDimensionDescrip tor|(((
	166	+)))|(% style="width:538px" %)Abstract concept (i.e., the structure without any data) of a flow of data that providers will provide for different reference periods.
	167	+|(% style="width:204px" %) |(% style="width:236px" %)/structure|(% style="width:538px" %)Associates a Dataflow to the Data Structure Definition.
	168	+|(% style="width:204px" %) |(% style="width:236px" %)dimensionConstraint|(% style="width:538px" %)A list of Dimensions which the Dataflow uses. This is only required when the referenced DataStructureDefinition has the evolvingStructure property set to true and when the association to the DataStructureDefinition in on the latest minor version{{footnote}}Referencing the latest minor version of the Data Structure is achieved by the reference including the plus operator on the minor version to indicate it links to the latest stable version, for example 2.0+.0 will resolve to the highest version 2.x.y.{{/footnote}}.
	169	+|(% style="width:204px" %)DataStructureDefinition|(% style="width:236px" %) |(% style="width:538px" %)A collection of metadata concepts, their structure and usage when used to collect or disseminate data.
	170	+|(% style="width:204px" %) |(% style="width:236px" %)/grouping|(% style="width:538px" %)An association to a set of metadata concepts that have an identified structural role in a Data Structure Definition.
	171	+|(% style="width:204px" %) |(% style="width:236px" %)evolvingStructure|(% style="width:538px" %)An optional boolean property, defaulting to false. When true the DataStructureDefinition may have new Dimensions added without having to change its major version number.
	172	+|(% style="width:204px" %)GroupDimensionDescriptor|(% style="width:236px" %)(((
187	187	Inherits from
188		-
189	189	//ComponentList//
190		-)))|A set of metadata concepts that define a partial key derived from the Dimension Descriptor in a Data Structure Definition.
191		-| |/components|An association to the Dimension components that comprise the group.
192		-|DimensionDescriptor|(((
	175	+)))|(% style="width:538px" %)A set of metadata concepts that define a partial key derived from the Dimension Descriptor in a Data Structure Definition.
	176	+|(% style="width:204px" %) |(% style="width:236px" %)/components|(% style="width:538px" %)An association to the Dimension components that comprise the group.
	177	+|(% style="width:204px" %)DimensionDescriptor|(% style="width:236px" %)(((
193	193	Inherits from
194		-
195	195	//ComponentList//
196		-)))|An ordered set of metadata concepts that, combined, classify a statistical series, and whose values, when combined (the key) in an instance such as a data set, uniquely identify a specific observation.
197		-| |/components|An association to the Dimension and Time Dimension comprising the Key Descriptor.
198		-|AttributeDescriptor|(((
	180	+)))|(% style="width:538px" %)An ordered set of metadata concepts that, combined, classify a statistical series, and whose values, when combined (the key) in an instance such as a data set, uniquely identify a specific observation.
	181	+|(% style="width:204px" %) |(% style="width:236px" %)/components|(% style="width:538px" %)An association to the Dimension and Time Dimension comprising the Key Descriptor.
	182	+|(% style="width:204px" %)AttributeDescriptor|(% style="width:236px" %)(((
199	199	Inherits from
200		-
201	201	//ComponentList//
202		-)))|A set metadata concepts that define the Attributes of a Data Structure Definition.
203		-| |/////components|An association to a Data Attribute component.
204		-|MeasureDescriptor|(((
	185	+)))|(% style="width:538px" %)A set metadata concepts that define the Attributes of a Data Structure Definition.
	186	+|(% style="width:204px" %) |(% style="width:236px" %)/components|(% style="width:538px" %)An association to a Data Attribute component.
	187	+|(% style="width:204px" %)MeasureDescriptor|(% style="width:236px" %)(((
205	205	Inherits from
206		-
207	207	//ComponentList//
208		-)))|A metadata concept that defines the Measures of a Data Structure Definition.
209		-| |/components|An association to a Measure component.
210		-|//DimensionComponent//|(((
	190	+)))|(% style="width:538px" %)A metadata concept that defines the Measures of a Data Structure Definition.
	191	+|(% style="width:204px" %) |(% style="width:236px" %)/components|(% style="width:538px" %)An association to a Measure component.
	192	+|(% style="width:204px" %)//DimensionComponent//|(% style="width:236px" %)(((
211	211	Inherits from
212		-
213	213	//Component//
214		-
215	215	Sub class
216		-
217	217	Dimension
218		-
219	219	TimeDimension
220		-)))|An abstract class representing any Component that can be used for identifying observations.
221		-
222		-
223		-
224		-
225		-|**Class**|**Feature**|**Description**
226		-| |Order|Specifies the order of the Dimension Components within the DSD. The property is used to indicate the position of the Dimension Component and determines the Key for identifying observations, or series. The Time Dimension, when specified, must be the last within the Dimension Descriptor.
227		-|Dimension|(((
	198	+)))|(% style="width:538px" %)An abstract class representing any Component that can be used for identifying observations.
	199	+|(% style="width:211px" %) |(% style="width:235px" %)Order|(% style="width:534px" %)Specifies the order of the Dimension Components within the DSD. The property is used to indicate the position of the Dimension Component and determines the Key for identifying observations, or series. The Time Dimension, when specified, must be the last within the Dimension Descriptor.
	200	+|(% style="width:211px" %)Dimension|(% style="width:235px" %)(((
228	228	Inherits from
229		-
230	230	//DimensionComponent//
231		-)))|A metadata concept used (most probably together with other metadata concepts) to classify a statistical series, e.g., a statistical concept indicating a certain economic activity or a geographical reference area.
232		-| |/role|Association to the Concept that specifies the role that that the Dimension plays in the Data Structure Definition.
233		-| |/conceptIdentity|An association to the metadata concept which defines the semantic of the Dimension.
234		-|TimeDimension|(((
	203	+)))|(% style="width:534px" %)A metadata concept used (most probably together with other metadata concepts) to classify a statistical series, e.g., a statistical concept indicating a certain economic activity or a geographical reference area.
	204	+|(% style="width:211px" %) |(% style="width:235px" %)/role|(% style="width:534px" %)Association to the Concept that specifies the role that that the Dimension plays in the Data Structure Definition.
	205	+|(% style="width:211px" %) |(% style="width:235px" %)/conceptIdentity|(% style="width:534px" %)An association to the metadata concept which defines the semantic of the Dimension.
	206	+|(% style="width:211px" %)TimeDimension|(% style="width:235px" %)(((
235	235	Inherits from
236		-
237	237	//DimensionComponent//
238		-)))|A metadata concept that identifies the component in the key structure that has the role of “time”.
239		-|DataAttribute|(((
	209	+)))|(% style="width:534px" %)A metadata concept that identifies the component in the key structure that has the role of “time”.
	210	+|(% style="width:211px" %)DataAttribute|(% style="width:235px" %)(((
240	240	Inherits from
241		-
242	242	//Component//
243		-)))|A characteristic of an object or entity.
244		-| |/role|Association to the Concept that specifies the role that that the Data Attribute plays in the Data Structure Definition.
245		-| |minOccurs|Defines the minimum required occurrences for the Attribute. When equals to zero, the Attribute is conditional.
246		-| |maxOccurs|Defines the maximum allowed occurrences for the Attribute.
247		-| |Usage|Defines whether a Data Attribute must be reported or not.
248		-| |+relatedTo|Association to an Attribute Relationship.
249		-| |/conceptIdentity|An association to the Concept which defines the semantic of the component.
250		-|Measure|(((
	213	+)))|(% style="width:534px" %)A characteristic of an object or entity.
	214	+|(% style="width:211px" %) |(% style="width:235px" %)/role|(% style="width:534px" %)Association to the Concept that specifies the role that that the Data Attribute plays in the Data Structure Definition.
	215	+|(% style="width:211px" %) |(% style="width:235px" %)minOccurs|(% style="width:534px" %)Defines the minimum required occurrences for the Attribute. When equals to zero, the Attribute is conditional.
	216	+|(% style="width:211px" %) |(% style="width:235px" %)maxOccurs|(% style="width:534px" %)Defines the maximum allowed occurrences for the Attribute.
	217	+|(% style="width:211px" %) |(% style="width:235px" %)Usage|(% style="width:534px" %)Defines whether a Data Attribute must be reported or not.
	218	+|(% style="width:211px" %) |(% style="width:235px" %)+relatedTo|(% style="width:534px" %)Association to an Attribute Relationship.
	219	+|(% style="width:211px" %) |(% style="width:235px" %)/conceptIdentity|(% style="width:534px" %)An association to the Concept which defines the semantic of the component.
	220	+|(% style="width:211px" %)Measure|(% style="width:235px" %)(((
251	251	Inherits from
252		-
253	253	//Component//
254		-)))|The metadata concept that is the phenomenon to be measured in a data set. In a data set the instance of the measure is often called the observation.
255		-| |/conceptIdentity|An association to the Concept which carries the values of the measures.
256		-| |minOccurs|Defines the minimum required occurrences for the Measure. When equals to zero, the Measure is conditional.
257		-| |maxOccurs|Defines the maximum allowed occurrences for the Measure.
258		-| |Usage|Defines whether a Measure must be reported or not.
259		-|//AttributeRelationship//|(((
	223	+)))|(% style="width:534px" %)The metadata concept that is the phenomenon to be measured in a data set. In a data set the instance of the measure is often called the observation.
	224	+|(% style="width:211px" %) |(% style="width:235px" %)/conceptIdentity|(% style="width:534px" %)An association to the Concept which carries the values of the measures.
	225	+|(% style="width:211px" %) |(% style="width:235px" %)minOccurs|(% style="width:534px" %)Defines the minimum required occurrences for the Measure. When equals to zero, the Measure is conditional.
	226	+|(% style="width:211px" %) |(% style="width:235px" %)maxOccurs|(% style="width:534px" %)Defines the maximum allowed occurrences for the Measure.
	227	+|(% style="width:211px" %) |(% style="width:235px" %)Usage|(% style="width:534px" %)Defines whether a Measure must be reported or not.
	228	+|(% style="width:211px" %)//AttributeRelationship//|(% style="width:235px" %)(((
260	260	Abstract Class
261		-
262	262	Sub classes
	231	+ObservationRelationship
	232	+GroupRelationship DimensionRelationship
	233	+)))|(% style="width:534px" %)Specifies the type of artefact to which a Data Attribute can be attached in a Data Set.
	234	+|(% style="width:211px" %)ObservationRelationship|(% style="width:235px" %) |(% style="width:534px" %)The Data Attribute is related to the observations of the Data Set.
	235	+|(% style="width:211px" %)GroupRelationship|(% style="width:235px" %) |(% style="width:534px" %)The Data Attribute is related to a Group Dimension Descriptor construct.
	236	+|(% style="width:211px" %) |(% style="width:235px" %)+groupKey|(% style="width:534px" %)An association to the Group Dimension Descriptor
	237	+|(% style="width:211px" %)DimensionRelationship|(% style="width:235px" %) |(% style="width:534px" %)The Data Attribute is related to a set of Dimensions.
	238	+|(% style="width:211px" %) |(% style="width:235px" %)+dimensions|(% style="width:534px" %)Association to the set of Dimensions to which the Data Attribute is related.
	239	+|(% style="width:211px" %) |(% style="width:235px" %)+groupKey|(% style="width:534px" %)Association to the Group Dimension Descriptor which specifies the set of Dimensions to which the Data Attribute is attached.
	240	+|(% style="width:211px" %)MeasureRelationship|(% style="width:235px" %) |(% style="width:534px" %)The Measures that a Data Attribute is reported for.
	241	+|(% style="width:211px" %) |(% style="width:235px" %)+measures|(% style="width:534px" %)Association to the set of Measures to which a Data Attribute is related to.
	242	+|(% style="width:211px" %)SentinelValuesType|(% style="width:235px" %) |(% style="width:534px" %)This facet indicates that an Attribute or a Measure has sentinel values with special meaning within their data type. This is realised by providing such values within the TextFormat, in addition to any textType or other Facet.
	243	+|(% style="width:211px" %)SentinelValue|(% style="width:235px" %) |(% style="width:534px" %)A value that has a special meaning within the text format representation of the Component.
	244	+|(% style="width:211px" %) |(% style="width:235px" %)+name|(% style="width:534px" %)An association of a Sentinel Value to a multilingual name.
	245	+|(% style="width:211px" %) |(% style="width:235px" %)+description|(% style="width:534px" %)An association of a Sentinel Value to a multilingual description.
263	263
264		-ObservationRelations hip
265		-
266		-GroupRelationship DimensionRelationshi p
267		-)))|Specifies the type of artefact to which a Data Attribute can be attached in a Data Set.
268		-|ObservationRelationsh ip| |The Data Attribute is related to the observations of the Data Set.
269		-|GroupRelationship| |The Data Attribute is related to a Group Dimension Descriptor construct.
270		-| |+groupKey|An association to the Group Dimension Descriptor
271		-|DimensionRelationship| |The Data Attribute is related to a set of Dimensions.
272		-| |+dimensions|Association to the set of Dimensions to which the Data Attribute is related.
273		-| |+groupKey|Association to the Group Dimension Descriptor which specifies the set of Dimensions to which the Data Attribute is attached.
274		-|MeasureRelationship| |The Measures that a Data Attribute is reported for.
275		-| |+measures|Association to the set of Measures to which a Data Attribute is related to.
276		-|SentinelValuesType| |This facet indicates that an Attribute or a Measure has sentinel values with special meaning within their data type. This is realised by providing such values within the TextFormat, in addition to any textType or other Facet.
277		-|SentinelValue| |A value that has a special meaning within the text format representation of the Component.
278		-| |+name|An association of a Sentinel Value to a multilingual name.
279		-| |+description|An association of a Sentinel Value to a multilingual description.
280		-
281		-
282		-
283	283	The explanation of the classes, attributes, and associations comprising the Representation is described in the section on the SDMX Base.
284	284
285		-==== //5.4 Data Set – Relationship View// ====
	249	+== 5.4 Data Set – Relationship View ==
286	286
287		-===== 5.4.1 Context =====
	251	+=== 5.4.1 Context ===
288	288
289	289	A data set comprises the collection of data values and associated metadata that are collected or disseminated according to a known DataStructureDefinition.
290	290
291		-===== 5.4.2 Class Diagram =====
	255	+=== 5.4.2 Class Diagram ===
292	292
293		-[[image:1749246368794-672.jpeg]]
	257	+[[image:image57.png]]
294	294
295	295	**Figure 31: Class Diagram of the Data Set**
296	296
297		-====== 5.4.3 Explanation of the Diagram ======
	261	+=== 5.4.3 Explanation of the Diagram ===
298	298
299		-5.4.3.1 Narrative – Data Set
	263	+==== 5.4.3.1 Narrative – Data Set ====
300	300
301	301	Note that the //DataSet// must conform to the DataStructureDefinition associated to the Dataflow for which this DataSet is an “instance of data”. Whilst the model shows the association to the classes of the DataStructureDefinition, this is for conceptual purposes to show the link to the DataStructureDefinition. In the actual //DataSet// as exchanged there must, of course, be a reference to the DataStructureDefinition and optionally a Dataflow or a ProvisionAgreement, but the DataStructureDefinition is not necessarily exchanged with the data. Therefore, the DataStructureDefinition classes are shown in the grey areas, as these are not a part of the //DataSet// when the //DataSet// is exchanged. However, the structural metadata in the DataStructureDefinition can be used by an application to validate the contents of the //DataSet// in terms of the valid content of a //KeyValue// as defined by the Representation in the DataStructureDefinition.
302	302
...	...	@@ -314,214 +314,162 @@
314	314
315	315	The GroupKey is a subunit of the //Key// that has the same dimensionality as the SeriesKey but defines a subset of the KeyValues of the SeriesKey. Its sub dimension structure is defined in the GroupDimensionDescriptor of the DataStructureDefinition identified by the same id as the GroupKey. The id identifies a “type” of group and the purpose of the GroupKey is to report one or more //AttributeValue// that are contained at this group level. The GroupKey is present when the GroupDimensionDescriptor is related to the GroupRelationship in the DataStructureDefinition. There can be many types of groups in a //DataSet//. If the Group is related to the DimensionRelationship in the DataStructureDefinition then the //AttributeValue// will be reported with the appropriate dimension in the SeriesKey or Observation.
316	316
317		-In this way each of SeriesKey, GroupKey, and Observation can have zero or more //AttributeValue//s that define some metadata about the object to which it is associated. The //AttributeValue// may be either a //DataAttributeValue// or a //MetadataAttributeValue//, representing values of DataAttributes defined in the DSD or MetadataAttributes of the linked MSD, respectively. The allowable Concepts and the objects to which these metadata can be associated (attached) are defined in the DataStructureDefinition and the linked MetadataStructureDefinition.
	281	+In this way each of SeriesKey, GroupKey, and Observation can have zero or more //AttributeValue//s that define some metadata about the object to which it is associated. The //AttributeValue// may be either a //DataAttributeValue// or a //MetadataAttributeValue//, representing values of DataAttributes defined in the DSD or MetadataAttributes of the linked MSD, respectively. The allowable Concepts and the objects to which these metadata can be associated (attached) are defined in the DataStructureDefinition and the linked MetadataStructureDefinition.
318	318
319	319	The //AttributeValue// links to the object type (SeriesKey, GroupKey, Observation) to which it is associated.
320	320
321		-5.4.3.2 Definitions
	285	+==== 5.4.3.2 Definitions ====
322	322
323		-|**Class**|**Feature**|**Description**
324		-|//DataSet//|(((
	287	+(% style="width:964.835px" %)
	288	+|(% style="width:200px" %)**Class**|(% style="width:285px" %)**Feature**|(% style="width:454px" %)**Description**
	289	+|(% style="width:200px" %)//DataSet//|(% style="width:285px" %)(((
325	325	Abstract Class
326		-
327	327	Sub classes
328		-
329		-StructureSpecificData
330		-
331		-Set
332		-)))|An organised collection of data.
333		-| |reportingBegin|A specific time period in a known system of time periods that identifies the start period of a report.
334		-| |reportingEnd|A specific time period in a known system of time periods that identifies the end period of a report.
335		-| |dataExtractionDate|A specific time period that identifies the date and time that the data are extracted from a data source.
336		-| |validFrom|Indicates the inclusive start time indicating the validity of the information in the data set.
337		-| |validTo|Indicates the inclusive end time indicating the validity of the information in the data set.
338		-| |publicationYear|Specifies the year of publication of the data or metadata in terms of whatever provisioning agreements might be in force.
339		-| |publicationPeriod|Specifies the period of publication of the data or metadata in terms of whatever provisioning agreements might be in force.
340		-| |setId|Provides an identification of the data set.
341		-| |action|Defines the action to be taken by the recipient system (information, append, replace, delete)
342		-| |describedBy|(((
343		-Associates a Dataflow and thereby a Data Structure
344		-
345		-Definition to the data set.
	292	+StructureSpecificDataSet
	293	+)))|(% style="width:454px" %)An organised collection of data.
	294	+|(% style="width:200px" %) |(% style="width:285px" %)reportingBegin|(% style="width:454px" %)A specific time period in a known system of time periods that identifies the start period of a report.
	295	+|(% style="width:200px" %) |(% style="width:285px" %)reportingEnd|(% style="width:454px" %)A specific time period in a known system of time periods that identifies the end period of a report.
	296	+|(% style="width:200px" %) |(% style="width:285px" %)dataExtractionDate|(% style="width:454px" %)A specific time period that identifies the date and time that the data are extracted from a data source.
	297	+|(% style="width:200px" %) |(% style="width:285px" %)validFrom|(% style="width:454px" %)Indicates the inclusive start time indicating the validity of the information in the data set.
	298	+|(% style="width:200px" %) |(% style="width:285px" %)validTo|(% style="width:454px" %)Indicates the inclusive end time indicating the validity of the information in the data set.
	299	+|(% style="width:200px" %) |(% style="width:285px" %)publicationYear|(% style="width:454px" %)Specifies the year of publication of the data or metadata in terms of whatever provisioning agreements might be in force.
	300	+|(% style="width:200px" %) |(% style="width:285px" %)publicationPeriod|(% style="width:454px" %)Specifies the period of publication of the data or metadata in terms of whatever provisioning agreements might be in force.
	301	+|(% style="width:200px" %) |(% style="width:285px" %)setId|(% style="width:454px" %)Provides an identification of the data set.
	302	+|(% style="width:200px" %) |(% style="width:285px" %)action|(% style="width:454px" %)Defines the action to be taken by the recipient system (information, append, replace, delete)
	303	+|(% style="width:200px" %) |(% style="width:285px" %)describedBy|(% style="width:454px" %)(((
	304	+Associates a Dataflow and thereby a Data Structure Definition to the data set.
346	346	)))
347		-| |+structuredBy|(((
348		-Associates the Data Structure Definition that defines the structure of the Data Set. Note that the Data Structure Definition is the same as that associated
349		-
350		-(non-mandatory) to the Dataflow.
	306	+|(% style="width:200px" %) |(% style="width:285px" %)+structuredBy|(% style="width:454px" %)(((
	307	+Associates the Data Structure Definition that defines the structure of the Data Set. Note that the Data Structure Definition is the same as that associated (non-mandatory) to the Dataflow.
351	351	)))
352		-| |+publishedBy|Associates the Data Provider that reports/publishes the data.
353		-|StructureSpecific DataSet| |An XML specific data format structure that contains data corresponding to one specific Data Structure Definition.
354		-|//Key//|(((
	309	+|(% style="width:200px" %) |(% style="width:285px" %)+publishedBy|(% style="width:454px" %)Associates the Data Provider that reports/publishes the data.
	310	+|(% style="width:200px" %)StructureSpecificDataSet|(% style="width:285px" %) |(% style="width:454px" %)An XML specific data format structure that contains data corresponding to one specific Data Structure Definition.
	311	+|(% style="width:200px" %)//Key//|(% style="width:285px" %)(((
355	355	Abstract class
356		-
357	357	Sub classes
358		-
359	359	SeriesKey
360		-
361	361	GroupKey
362		-)))|Comprises the cross product of values of dimensions that identify uniquely an Observation.
363		-| |keyValues|Association to the individual Key Values that comprise the Key.
364		-| |+attachedAttribute|Association to the Attribute Values relating to the Series Key or Group Key.
365		-|//KeyValue//|(((
	316	+)))|(% style="width:454px" %)Comprises the cross product of values of dimensions that identify uniquely an Observation.
	317	+|(% style="width:200px" %) |(% style="width:285px" %)keyValues|(% style="width:454px" %)Association to the individual Key Values that comprise the Key.
	318	+|(% style="width:200px" %) |(% style="width:285px" %)+attachedAttribute|(% style="width:454px" %)Association to the Attribute Values relating to the Series Key or Group Key.
	319	+|(% style="width:200px" %)//KeyValue//|(% style="width:285px" %)(((
366	366	Abstract class
367		-
368	368	Sub classes
369		-
370	370	TimeKeyValue
371		-
372	372	CodedKeyValue
373		-
374	374	UncodedKeyValue
375		-)))|The value of a component of a key such as the value of the instance a Dimension in a Dimension Descriptor of a Data Structure Definition.
376		-| |+valueFor|(((
	325	+)))|(% style="width:454px" %)The value of a component of a key such as the value of the instance a Dimension in a Dimension Descriptor of a Data Structure Definition.
	326	+|(% style="width:200px" %) |(% style="width:285px" %)+valueFor|(% style="width:454px" %)(((
377	377	Association to the key component in the Data Structure Definition for which this Key Value is a valid representation.
378		-
379	379	Note that this is conceptual association as the key component is identified explicitly in the data set.
380	380	)))
381		-|TimeKeyValue|(((
	330	+|(% style="width:200px" %)TimeKeyValue|(% style="width:285px" %)(((
382	382	Inherits from
383		-
384	384	//KeyValue//
385		-)))|The value of the Time Dimension component of the key.
386		-|CodedKeyValue|(((
	333	+)))|(% style="width:454px" %)The value of the Time Dimension component of the key.
	334	+|(% style="width:200px" %)CodedKeyValue|(% style="width:285px" %)(((
387	387	Inherits from
388		-
389	389	//KeyValue//
390		-)))|The value of a coded component of the key. The value is the Code to which this class is associated.
391		-| |+valueOf|Association to the Code. Note that this is a conceptual association showing that the Code must exist in the Code list associated with the Dimension in the Data Structure Definition. In the actual Data Set the value of the Code is placed in the Key Value.
392		-|UnCodedKeyValue|(((
	337	+)))|(% style="width:454px" %)The value of a coded component of the key. The value is the Code to which this class is associated.
	338	+|(% style="width:200px" %) |(% style="width:285px" %)+valueOf|(% style="width:454px" %)Association to the Code. Note that this is a conceptual association showing that the Code must exist in the Code list associated with the Dimension in the Data Structure Definition. In the actual Data Set the value of the Code is placed in the Key Value.
	339	+|(% style="width:200px" %)UnCodedKeyValue|(% style="width:285px" %)(((
393	393	Inherits from
394		-
395	395	//KeyValue//
396		-)))|The value of an uncoded component of the key.
397		-| |value|The value of the key component.
398		-| |startTime|This attribute is only used if the textFormat of the attribute is of the Timespan type in the Data Structure Definition (in which case the value field takes a duration).
399		-|GroupKey|(((
	342	+)))|(% style="width:454px" %)The value of an uncoded component of the key.
	343	+|(% style="width:200px" %) |(% style="width:285px" %)value|(% style="width:454px" %)The value of the key component.
	344	+|(% style="width:200px" %) |(% style="width:285px" %)startTime|(% style="width:454px" %)This attribute is only used if the textFormat of the attribute is of the Timespan type in the Data Structure Definition (in which case the value field takes a duration).
	345	+|(% style="width:200px" %)GroupKey|(% style="width:285px" %)(((
400	400	Inherits from
401		-
402	402	//Key//
403		-)))|A set of Key Values that comprise a partial key, of the same dimensionality as the Time Series Key for the purpose of attaching Data Attributes.
404		-| |+describedBy|Associates the Group Dimension Descriptor defined in the Data Structure Definition.
405		-|SeriesKey|(((
	348	+)))|(% style="width:454px" %)A set of Key Values that comprise a partial key, of the same dimensionality as the Time Series Key for the purpose of attaching Data Attributes.
	349	+|(% style="width:200px" %) |(% style="width:285px" %)+describedBy|(% style="width:454px" %)Associates the Group Dimension Descriptor defined in the Data Structure Definition.
	350	+|(% style="width:200px" %)SeriesKey|(% style="width:285px" %)(((
406	406	Inherits from
407		-
408	408	//Key//
409		-)))|Comprises the cross product of values of all the Key Values that, together with the Key Value of the +observation Dimension identify uniquely an Observation.
410		-| |+describedBy|Associates the Dimension Descriptor defined in the Data Structure Definition.
411		-|Observation| |The value(s) of the observed phenomenon in the context of the Key Values comprising the key.
412		-| |+valueFor|(((
	353	+)))|(% style="width:454px" %)Comprises the cross product of values of all the Key Values that, together with the Key Value of the +observation Dimension identify uniquely an Observation.
	354	+|(% style="width:200px" %) |(% style="width:285px" %)+describedBy|(% style="width:454px" %)Associates the Dimension Descriptor defined in the Data Structure Definition.
	355	+|(% style="width:200px" %)Observation|(% style="width:285px" %) |(% style="width:454px" %)The value(s) of the observed phenomenon in the context of the Key Values comprising the key.
	356	+|(% style="width:200px" %) |(% style="width:285px" %)+valueFor|(% style="width:454px" %)(((
413	413	Associates the Measure(s) defined in the Data Structure Definition.
414	414
415	415	The source multiplicity (1..*) indicates that more than one values may be provided for a Measure, if the latter allows it.
416	416	)))
417		-| |+attachedAttribute|Association to the Attribute Values relating to the Observation.
418		-| |+observationDimension|Association to the Key Value that holds the value of the “Dimension at the Observation Level”.
419		-|//ObservationValue//|(((
	361	+|(% style="width:200px" %) |(% style="width:285px" %)+attachedAttribute|(% style="width:454px" %)Association to the Attribute Values relating to the Observation.
	362	+|(% style="width:200px" %) |(% style="width:285px" %)+observationDimension|(% style="width:454px" %)Association to the Key Value that holds the value of the “Dimension at the Observation Level”.
	363	+|(% style="width:200px" %)//ObservationValue//|(% style="width:285px" %)(((
420	420	Abstract class
421		-
422	422	Sub classes
423		-
424		-//UncodedObservationVal ue//
425		-
	366	+//UncodedObservationValue//
426	426	CodedObservation
427		-)))|
428		-|//UncodedObservatio nValue//|(((
	368	+)))|(% style="width:454px" %)
	369	+|(% style="width:200px" %)//UncodedObservationValue//|(% style="width:285px" %)(((
429	429	Abstract class
430		-
431	431	Inherits from
432		-
433	433	//ObservationValue//
434		-
435	435	Sub classes
436		-
437		-OtherUncodedMeasureVa lue
438		-
	374	+OtherUncodedMeasureValue
439	439	TextMeasureValue
440		-)))|
441		-|OtherUncodedMeasu reValue|(((
	376	+)))|(% style="width:454px" %)
	377	+|(% style="width:200px" %)OtherUncodedMeasureValue|(% style="width:285px" %)(((
442	442	Inherits from
443		-
444		-//UncodedObservationVal ue//
445		-)))|An observation that has a text value.
446		-| |value|The value of the Uncoded Observation.
447		-| |startTime|This attribute is only used if the textFormat of the Measure is of the Timespan type in the Data Structure Definition (in which case the value field takes a duration).
448		-|TextMeasureValue|(((
	379	+//UncodedObservationValue//
	380	+)))|(% style="width:454px" %)An observation that has a text value.
	381	+|(% style="width:200px" %) |(% style="width:285px" %)value|(% style="width:454px" %)The value of the Uncoded Observation.
	382	+|(% style="width:200px" %) |(% style="width:285px" %)startTime|(% style="width:454px" %)This attribute is only used if the textFormat of the Measure is of the Timespan type in the Data Structure Definition (in which case the value field takes a duration).
	383	+|(% style="width:200px" %)TextMeasureValue|(% style="width:285px" %)(((
449	449	Inherits from
450		-
451		-//UncodedObservationVal ue//
452		-)))|An observation that has a localised text value
453		-| |text|The localised text values.
454		-|CodedObservation|(((
	385	+//UncodedObservationValue//
	386	+)))|(% style="width:454px" %)An observation that has a localised text value
	387	+|(% style="width:200px" %) |(% style="width:285px" %)text|(% style="width:454px" %)The localised text values.
	388	+|(% style="width:200px" %)CodedObservation|(% style="width:285px" %)(((
455	455	Inherits from
456		-
457	457	//ObservationValue//
458		-)))|An Observation that takes its value from a code in a Code list.
459		-| |+valueOf|Association to the Code that is the value of the Observation. Note that this is a conceptual association showing that the Code must exist in the Codelist(s) associated with the Measure(s) in the Data Structure Definition. In the actual Data Set the value of the Code is placed in the Observation.
460		-|//AttributeValue//|(((
	391	+)))|(% style="width:454px" %)An Observation that takes its value from a code in a Code list.
	392	+|(% style="width:200px" %) |(% style="width:285px" %)+valueOf|(% style="width:454px" %)Association to the Code that is the value of the Observation. Note that this is a conceptual association showing that the Code must exist in the Codelist(s) associated with the Measure(s) in the Data Structure Definition. In the actual Data Set the value of the Code is placed in the Observation.
	393	+|(% style="width:200px" %)//AttributeValue//|(% style="width:285px" %)(((
461	461	Abstract class
462		-
463	463	Sub classes
464		-
465		-//DataAttributeValue// //MetadataAttributeValu e//
466		-)))|Represents the value for any Attribute reported in the Dataset, i.e., Data or Metadata Attribute.
467		-|//DataAttributeValu e//|(((
	396	+//DataAttributeValue// //MetadataAttributeValue//
	397	+)))|(% style="width:454px" %)Represents the value for any Attribute reported in the Dataset, i.e., Data or Metadata Attribute.
	398	+|(% style="width:200px" %)//DataAttributeValue//|(% style="width:285px" %)(((
468	468	Abstract class
469		-
470	470	Inherits from
471		-
472	472	//AttributeValue//
473		-
474	474	Sub classes
475		-
476		-//UncodedAttributeValue//
477		-
478		-//CodedAttributeValue//
479		-)))|The value of a Data Attribute, such as the instance of a Coded Attribute or of an Uncoded Attribute in a structure such as a Data Structure Definition.
480		-| |+valueFor|(((
	403	+//UncodedAttributeValue
	404	+CodedAttributeValue//
	405	+)))|(% style="width:454px" %)The value of a Data Attribute, such as the instance of a Coded Attribute or of an Uncoded Attribute in a structure such as a Data Structure Definition.
	406	+|(% style="width:200px" %) |(% style="width:285px" %)+valueFor|(% style="width:454px" %)(((
481	481	Association to the Data Attribute defined in the Data Structure Definition. Note that this is conceptual association as the Concept is identified explicitly in the data set.
482		-
483	483	The source multiplicity (1..*) indicates the possibility to provide more than one values for a Data Attribute, if the latter allows it.
484	484	)))
485		-|//MetadataAttribute Value//|(((
486		-(explained further in section
487		-
488		-“Metadata Set”)
489		-)))|The value of a Metadata Attribute, as specified in the Metadata Structure Definition, which is linked in the Data Structure Definition
490		-|//UncodedAttributeV alue//|(((
	410	+|(% style="width:200px" %)//MetadataAttributeValue//|(% style="width:285px" %)(((
	411	+(explained further in section “Metadata Set”)
	412	+)))|(% style="width:454px" %)The value of a Metadata Attribute, as specified in the Metadata Structure Definition, which is linked in the Data Structure Definition
	413	+|(% style="width:200px" %)//UncodedAttributeValue//|(% style="width:285px" %)(((
491	491	Inherits from
492		-
493	493	//AttributeValue//
494		-
495	495	Sub classes
496		-
497		-OtherUncodedAttribute
498		-
499		-Value
500		-
	417	+OtherUncodedAttributeValue
501	501	TextAttributeValue
502		-)))|
503		-|OtherUncodedAttri buteValue|(((
	419	+)))|(% style="width:454px" %)
	420	+|(% style="width:200px" %)OtherUncodedAttributeValue|(% style="width:285px" %)(((
504	504	Inherits from
505		-
506		-//UncodedObservationVal ue//
507		-)))|An attribute value that has a text value
508		-| |value|The value of the Uncoded attribute.
509		-| |startTime|This attribute is only used if the textFormat of the attribute is of the Timespan type in the Data Structure Definition (in which case the value field takes a duration).
510		-|TextAttributeValu e|(((
	422	+//UncodedObservationValue//
	423	+)))|(% style="width:454px" %)An attribute value that has a text value
	424	+|(% style="width:200px" %) |(% style="width:285px" %)value|(% style="width:454px" %)The value of the Uncoded attribute.
	425	+|(% style="width:200px" %) |(% style="width:285px" %)startTime|(% style="width:454px" %)This attribute is only used if the textFormat of the attribute is of the Timespan type in the Data Structure Definition (in which case the value field takes a duration).
	426	+|(% style="width:200px" %)TextAttributeValue|(% style="width:285px" %)(((
511	511	Inherits from
512		-
513	513	//UncodedAttributeValue//
514		-)))|An attribute that has a localised text value
515		-| |text|The localised text values.
516		-|CodedAttributeVal ue|(((
	429	+)))|(% style="width:454px" %)An attribute that has a localised text value
	430	+|(% style="width:200px" %) |(% style="width:285px" %)text|(% style="width:454px" %)The localised text values.
	431	+|(% style="width:200px" %)CodedAttributeValue|(% style="width:285px" %)(((
517	517	Inherits from
518		-
519	519	//AttributeValue//
520		-)))|An attribute that takes it value from a Code in Code list.
521		-| |+valueOf|Association to the Code that is the value of the Attribute Value. Note that this is a conceptual association showing that the Code must exist in the Code list associated with the Data Attribute in the Data Structure Definition. In the actual Data Set the value of the Code is placed in the Attribute Value.
	434	+)))|(% style="width:454px" %)An attribute that takes it value from a Code in Code list.
	435	+|(% style="width:200px" %) |(% style="width:285px" %)+valueOf|(% style="width:454px" %)Association to the Code that is the value of the Attribute Value. Note that this is a conceptual association showing that the Code must exist in the Code list associated with the Data Attribute in the Data Structure Definition. In the actual Data Set the value of the Code is placed in the Attribute Value.
522	522
523		-
524		-
525	525	----
526	526
527		-[[~[1~]>>path:#_ftnref1]] Referencing the latest minor version of the Data Structure is achieved by the reference including the plus operator on the minor version to indicate it links to the latest stable version, for example 2.0+.0 will resolve to the highest version 2.x.y.
	439	+{{putFootnotes/}}

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