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4 4  
5 5  == 5.1 Introduction ==
6 6  
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.
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 (also referred to as DSD) is used in this specification.
8 8  
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]].
9 +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.
10 10  
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).
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 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).
12 12  
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:
13 +The actual SDMX Base construct from which the concrete classes inherit depends upon the requirements of the class for:
14 14  
15 -[[Annotation>>doc:sdmx:Glossary 2\.1.Annotation.WebHome]] – //AnnotableArtefact//
15 +Annotation – //AnnotableArtefact//
16 16  Identification – //IdentifiableArtefact//
17 17  Naming – //NameableArtefact//
18 18  Versioning – //VersionableArtefact//
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22 22  
23 23  === 5.2.1 Class Diagram ===
24 24  
25 -[[image:image53.png]]
25 +[[image:1749246368774-202.jpeg]]
26 26  
27 27  **Figure 27 Class inheritance in the Data Structure Definition and Data Set Packages**
28 28  
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88 88  
89 89  === 5.3.1 Class Diagram ===
90 90  
91 -[[image:image54.png]]
91 +[[image:1749246368782-690.jpeg]]
92 92  
93 93  **Figure 28 Relationship class diagram of the Data Structure Definition excluding representation**
94 94  
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133 133  * Observation (ObservationRelationship)
134 134  * 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.
135 135  
136 -[[image:image55.png]]
136 +[[image:1749246368785-499.jpeg]]
137 137  
138 138  **Figure 29: Attribute Attachment Defined in the Data Structure Definition**
139 139  
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146 146  |Group|(% style="width:537px" %)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.|(% style="width:434px" %)The attribute is reported at the level of Group.
147 147  |Observation|(% style="width:537px" %)The value of the Attribute varies with the observed value.|(% style="width:434px" %)The attribute is reported at the level of Observation.
148 148  
149 -[[image:image56.png]]
149 +[[image:1749246368790-555.jpeg]]
150 150  
151 151  **Figure 30: Representation of DSD Components**
152 152  
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196 196  Dimension
197 197  TimeDimension
198 198  )))|(% style="width:538px" %)An abstract class representing any Component that can be used for identifying observations.
199 +
200 +(% style="width:981.835px" %)
201 +|(% style="width:211px" %)**Class**|(% style="width:235px" %)**Feature**|(% style="width:534px" %)**Description**
199 199  |(% 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.
200 200  |(% style="width:211px" %)Dimension|(% style="width:235px" %)(((
201 201  Inherits from
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219 219  |(% style="width:211px" %) |(% style="width:235px" %)/conceptIdentity|(% style="width:534px" %)An association to the Concept which defines the semantic of the component.
220 220  |(% style="width:211px" %)Measure|(% style="width:235px" %)(((
221 221  Inherits from
225 +
222 222  //Component//
223 223  )))|(% 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.
224 224  |(% style="width:211px" %) |(% style="width:235px" %)/conceptIdentity|(% style="width:534px" %)An association to the Concept which carries the values of the measures.
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246 246  
247 247  The explanation of the classes, attributes, and associations comprising the Representation is described in the section on the SDMX Base.
248 248  
249 -== 5.4 Data Set – Relationship View ==
253 +==== //5.4 Data Set – Relationship View// ====
250 250  
251 251  === 5.4.1 Context ===
252 252  
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254 254  
255 255  === 5.4.2 Class Diagram ===
256 256  
257 -[[image:image57.png]]
261 +[[image:1749246368794-672.jpeg]]
258 258  
259 259  **Figure 31: Class Diagram of the Data Set**
260 260  
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289 289  |(% style="width:200px" %)//DataSet//|(% style="width:285px" %)(((
290 290  Abstract Class
291 291  Sub classes
292 -StructureSpecificDataSet
296 +StructureSpecificData
297 +Set
293 293  )))|(% style="width:454px" %)An organised collection of data.
294 294  |(% 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.
295 295  |(% 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.
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408 408  The source multiplicity (1..*) indicates the possibility to provide more than one values for a Data Attribute, if the latter allows it.
409 409  )))
410 410  |(% style="width:200px" %)//MetadataAttributeValue//|(% style="width:285px" %)(((
411 -(explained further in section “Metadata Set”)
416 +(explained further in section
417 +
418 +“Metadata Set”)
412 412  )))|(% style="width:454px" %)The value of a Metadata Attribute, as specified in the Metadata Structure Definition, which is linked in the Data Structure Definition
413 413  |(% style="width:200px" %)//UncodedAttributeValue//|(% style="width:285px" %)(((
414 414  Inherits from
415 415  //AttributeValue//
416 416  Sub classes
417 -OtherUncodedAttributeValue
424 +OtherUncodedAttribute
425 +Value
418 418  TextAttributeValue
419 419  )))|(% style="width:454px" %)
420 420  |(% style="width:200px" %)OtherUncodedAttributeValue|(% style="width:285px" %)(((
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SKMS.Methodology.Code.MethodologyClass[0]
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SUZ.Methodology.Code.MethodologyClass[0]
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