ReferenceVariable¶
Fully qualified class name: DDICDIModels::DDICDILibrary::Classes::DataDescription::Long::ReferenceVariable
Definition¶
Variable that records values of multiple variables in the context of a data structure. Variable playing the role of a variable value component.
Examples¶
Consider two variables, i.e. income and age, with values appearing in the same column, e.g. 100000, 45, 85000, 34, etc. Values 100000, 45, 85000, 34 are reference values in the reference value domain corresponding to the reference variable.
Diagram
Inheritance
Attributes
Name |
Inherited from |
Description |
Data Type |
Multiplicity |
Default value |
|---|---|---|---|---|---|
describedUnitOfMeasure |
The unit in which the data values are measured (kg, pound, euro), expressed as a value from a controlled system of entries (i.e., QDT). Supports the provision of an identifier for the entry in the authoritative source (a URI, etc.), and the specific vocabulary. |
0..1 |
|||
hasIntendedDataType |
The data type intended to be used by this variable. Supports the optional use of an external controlled vocabulary. |
0..1 |
|||
simpleUnitOfMeasure |
The unit in which the data values are measured (kg, pound, euro), expressed as a simple string, in cases where no additional information is available (in the legacy system) or needed (as in the case of broad agreement within the community of use [i.e., ISO country codes, currencies, etc. in SDMX]) |
String |
0..1 |
||
descriptiveText |
A short natural language account of the characteristics of the object. |
0..1 |
|||
unitOfMeasureKind |
Kind of unit of measure, so that it may be prone to translation to equivalent UOMs. Example values include “acceleration,” “temperature,” “salinity”, etc. This description exists at the conceptual level, indicating a limitation on the type of representations which may be used for the variable as it is made more concrete. |
0..1 |
|||
catalogDetails |
Bundles the information useful for a data catalog entry. Examples would be creator, contributor, title, copyright, embargo, and license information. A set of information useful for attribution, data discovery, and access. This is information that is tied to the identity of the object. If this information changes the version of the associated object changes. |
0..1 |
|||
definition |
Natural language statement conveying the meaning of a concept, differentiating it from other concepts. Supports the use of multiple languages and structured text. ‘externalDefinition’ can’t be used if ‘definition’ is used. |
0..1 |
|||
displayLabel |
A human-readable display label for the object. Supports the use of multiple languages. Repeat for labels with different content, for example, labels with differing length limitations. |
0..* |
|||
externalDefinition |
A reference to an external definition of a concept (that is, a concept which is described outside the content of the DDI-CDI metadata description). An example is a SKOS concept. The definition property is assumed to duplicate the external one referenced if externalDefinition is used. Other corresponding properties are assumed to be included unchanged if used. |
0..1 |
|||
identifier |
Identifier for objects requiring short- or long-lasting referencing and management. |
0..1 |
|||
name |
Human understandable name (linguistic signifier, word, phrase, or mnemonic). May follow ISO/IEC 11179-5 naming principles, and have context provided to specify usage. |
0..* |
Associations
Direction |
Association |
Description |
Multiplicity of ReferenceVariable |
Package of Other Class |
Other Class |
Multiplicity of other class |
Aggregation Kind |
Inherited from |
|---|---|---|---|---|---|---|---|---|
to |
DataStructureComponent isDefinedBy RepresentedVariable |
Data structure component is defined by zero to one represented variable. |
0..1 |
0..* |
none |
|||
from |
RepresentedVariable takesSentinelValuesFrom SentinelValueDomain |
A represented variable may have more than one sets of sentinel value domains, one for each type of software platform on which related instance variables might be instantiated. All of the sentinel value domains must have sentinel conceptual domains that correspond exactly. This allows codes for missing values to be explicitly matched across platforms. |
0..* |
0..* |
none |
|||
from |
RepresentedVariable takesSubstantiveValuesFrom SubstantiveValueDomain |
The substantive representation (substantive value domain) of the variable. This is equivalent to the relationship “Measures” in the Generic Statistical Information Model (GSIM) although GSIM makes no distinction between substantive and sentinel values. |
0..* |
0..1 |
none |
|||
from |
ConceptualVariable measures UnitType |
The measures association is intended to describe specific relationships between the ConceptualVariable and UnitType classes, and similar relationships between their sub-classes. This is documented in section VII.D.5 of the “DDI-Cross Domain Integration: Detailed Model” document. |
0..* |
0..1 |
none |
|||
from |
ConceptualVariable takesSentinelConceptsFrom SentinelConceptualDomain |
Identifies the conceptual domain containing the set of sentinel concepts used to describe the conceptual variable. |
0..* |
0..1 |
none |
|||
from |
ConceptualVariable takesSubstantiveConceptsFrom SubstantiveConceptualDomain |
Identifies the substantive conceptual domain containing the set of substantive concepts used to describe the conceptual variable. |
0..* |
0..1 |
none |
|||
to |
VariableCollection has ConceptualVariable |
Variable collection has zero to many conceptual variables. |
0..* |
0..* |
none |
|||
to |
VariablePosition indexes ConceptualVariable |
Variable position indexes a conceptual variable. |
1..1 |
0..* |
none |
|||
to |
VariableRelationship hasSource ConceptualVariable |
0..* |
0..* |
none |
||||
to |
VariableRelationship hasTarget ConceptualVariable |
Note that this can be realized as a collection to support tuples. |
0..* |
0..* |
none |
|||
to |
AgentListing isDefinedBy Concept |
The conceptual basis for the collection of members. |
0..* |
0..* |
none |
|||
to |
ClassificationFamily isDefinedBy Concept |
The conceptual basis for the collection of members. |
0..* |
0..* |
none |
|||
to |
ClassificationIndex isDefinedBy Concept |
The conceptual basis for the collection of members. |
0..* |
0..* |
none |
|||
to |
ClassificationSeries isDefinedBy Concept |
The conceptual basis for the collection of members. |
0..* |
0..* |
none |
|||
to |
Concept uses Concept |
The uses association is intended to describe specific relationships between Concepts and several of its sub-classes. This is documented in section VII.D.5 of the “DDI-Cross Domain Integration: Detailed Model” document. |
0..* |
0..* |
none |
|||
to |
ConceptMap hasSource Concept |
Concept map has one to many source concepts. |
1..* |
0..* |
none |
|||
to |
ConceptMap hasTarget Concept |
Concept map has one to many target concepts. |
1..* |
0..* |
none |
|||
to |
ConceptRelationship hasSource Concept |
Restricts source object to concept for the relationship. |
1..1 |
0..* |
none |
|||
to |
ConceptRelationship hasTarget Concept |
Restricts target object to concept for the relationship. |
1..1 |
0..* |
none |
|||
to |
ConceptSystem has Concept |
Concept system has zero to many concepts. |
0..* |
0..* |
none |
|||
to |
ConceptSystem isDefinedBy Concept |
Concept system is defined by zero to many concepts. The conceptual basis for the collection of members. |
0..* |
0..* |
none |
|||
to |
DataStore isDefinedBy Concept |
The conceptual basis for the collection of members. |
0..* |
0..* |
none |
|||
to |
EnumerationDomain isDefinedBy Concept |
The conceptual basis for the collection of members. |
0..* |
0..* |
none |
|||
to |
Level isDefinedBy Concept |
A concept or concept sub-type which describes the level. |
0..1 |
0..* |
none |
|||
to |
LogicalRecord isDefinedBy Concept |
The conceptual basis for the collection of members. |
0..* |
0..* |
none |
|||
to |
PhysicalDataSet isDefinedBy Concept |
The conceptual basis for the collection of members. |
0..* |
0..* |
none |
|||
to |
PhysicalRecordSegment isDefinedBy Concept |
The conceptual basis for the collection of members. |
0..* |
0..* |
none |
|||
to |
PhysicalSegmentLayout isDefinedBy Concept |
The conceptual basis for the collection of members. |
0..* |
0..* |
none |
|||
to |
VariableCollection isDefinedBy Concept |
The conceptual basis for the collection of members. |
0..* |
0..* |
none |
|||
to |
Descriptor identifies ReferenceVariable |
1..1 |
- own package - |
0..* |
none |
- own class - |
||
from |
ReferenceVariable takesValuesFrom ReferenceValueDomain |
Points to a value domain that contains values that may be drawn from the domains of multiple simple variables. |
0..* |
- own package - |
0..1 |
none |
- own class - |
Syntax representations / encodings
All syntax representations except the Canonical XMI are provided as reference points for specific implementations, or for use as defaults if sufficient in the form presented.
Fragment for the class ReferenceVariable (entire model as XMI)
1<packagedElement xmlns:StandardProfile="http://www.eclipse.org/uml2/5.0.0/UML/Profile/Standard"
2 xmlns:uml="http://www.eclipse.org/uml2/5.0.0/UML"
3 xmlns:xmi="http://www.omg.org/spec/XMI/20131001"
4 xmi:id="DDICDIModels-DDICDILibrary-Classes-DataDescription-Long-ReferenceVariable"
5 xmi:uuid="http://ddialliance.org/Specification/DDI-CDI/1.0/XMI/#ReferenceVariable"
6 xmi:type="uml:Class">
7 <ownedComment xmi:id="DDICDIModels-DDICDILibrary-Classes-DataDescription-Long-ReferenceVariable-ownedComment"
8 xmi:uuid="http://ddialliance.org/Specification/DDI-CDI/1.0/XMI/#ReferenceVariable-ownedComment"
9 xmi:type="uml:Comment">
10 <annotatedElement xmi:idref="DDICDIModels-DDICDILibrary-Classes-DataDescription-Long-ReferenceVariable"/>
11 <body>Definition
12============
13Variable that records values of multiple variables in the context of a data structure.
14Variable playing the role of a variable value component.
15
16Examples
17==========
18Consider two variables, i.e. income and age, with values appearing in the same column, e.g. 100000, 45, 85000, 34, etc.
19Values 100000, 45, 85000, 34 are reference values in the reference value domain corresponding to the reference variable.</body>
20 </ownedComment>
21 <name>ReferenceVariable</name>
22 <generalization xmi:id="DDICDIModels-DDICDILibrary-Classes-DataDescription-Long-ReferenceVariable-generalization"
23 xmi:uuid="http://ddialliance.org/Specification/DDI-CDI/1.0/XMI/#ReferenceVariable-generalization"
24 xmi:type="uml:Generalization">
25 <general xmi:idref="DDICDIModels-DDICDILibrary-Classes-Conceptual-RepresentedVariable"/>
26 </generalization>
27 <ownedAttribute xmi:id="DDICDIModels-DDICDILibrary-Classes-DataDescription-Long-ReferenceVariable-ownedAttribute"
28 xmi:uuid="http://ddialliance.org/Specification/DDI-CDI/1.0/XMI/#ReferenceVariable-ownedAttribute"
29 xmi:type="uml:Property">
30 <lowerValue xmi:id="DDICDIModels-DDICDILibrary-Classes-DataDescription-Long-ReferenceVariable-ownedAttribute-lowerValue"
31 xmi:uuid="http://ddialliance.org/Specification/DDI-CDI/1.0/XMI/#ReferenceVariable-ownedAttribute-lowerValue"
32 xmi:type="uml:LiteralInteger"/>
33 <upperValue xmi:id="DDICDIModels-DDICDILibrary-Classes-DataDescription-Long-ReferenceVariable-ownedAttribute-upperValue"
34 xmi:uuid="http://ddialliance.org/Specification/DDI-CDI/1.0/XMI/#ReferenceVariable-ownedAttribute-upperValue"
35 xmi:type="uml:LiteralUnlimitedNatural">
36 <value>1</value>
37 </upperValue>
38 <association xmi:idref="DDICDIModels-DDICDILibrary-Classes-DataDescription-Long-ReferenceVariable_takesValuesFrom_ReferenceValueDomain"/>
39 <type xmi:idref="DDICDIModels-DDICDILibrary-Classes-DataDescription-Long-ReferenceValueDomain"/>
40 </ownedAttribute>
41</packagedElement>
Fragment for the class ReferenceVariable (entire XML Schema)
1<xs:element name="ReferenceVariable"
2 type="ReferenceVariableXsdType"
3 xml:id="ReferenceVariable">
4 <!-- based on the UML class DDICDIModels::DDICDILibrary::Classes::DataDescription::Long::ReferenceVariable -->
5 <xs:annotation>
6 <xs:documentation>Definition
7 ============
8 Variable that records values of multiple variables in the context of a data structure.
9 Variable playing the role of a variable value component.
10
11 Examples
12 ==========
13 Consider two variables, i.e. income and age, with values appearing in the same column, e.g. 100000, 45, 85000, 34, etc.
14 Values 100000, 45, 85000, 34 are reference values in the reference value domain corresponding to the reference variable.</xs:documentation>
15 </xs:annotation>
16</xs:element>
17<xs:complexType name="ReferenceVariableXsdType"
18 xml:id="ReferenceVariableXsdType">
19 <xs:annotation>
20 <xs:documentation>Definition
21 ============
22 Variable that records values of multiple variables in the context of a data structure.
23 Variable playing the role of a variable value component.
24
25 Examples
26 ==========
27 Consider two variables, i.e. income and age, with values appearing in the same column, e.g. 100000, 45, 85000, 34, etc.
28 Values 100000, 45, 85000, 34 are reference values in the reference value domain corresponding to the reference variable.</xs:documentation>
29 </xs:annotation>
30 <xs:complexContent>
31 <xs:extension base="RepresentedVariableXsdType">
32 <xs:sequence>
33 <xs:element name="ReferenceVariable_takesValuesFrom_ReferenceValueDomain"
34 minOccurs="0"
35 maxOccurs="1"
36 xml:id="ReferenceVariable_takesValuesFrom_ReferenceValueDomain">
37 <xs:annotation>
38 <xs:documentation>Points to a value domain that contains values that may be drawn from the domains of multiple simple variables.</xs:documentation>
39 </xs:annotation>
40 <xs:complexType>
41 <xs:complexContent>
42 <xs:restriction base="AssociationReferenceXsdType">
43 <xs:sequence>
44 <xs:element name="ddiReference"
45 type="InternationalRegistrationDataIdentifierXsdType"
46 minOccurs="0"
47 maxOccurs="1"
48 xml:id="ReferenceVariable_takesValuesFrom_ReferenceValueDomain-ddiReference"/>
49 <xs:element name="validType"
50 minOccurs="0"
51 maxOccurs="unbounded"
52 xml:id="ReferenceVariable_takesValuesFrom_ReferenceValueDomain-validType">
53 <xs:simpleType>
54 <xs:restriction base="xs:NMTOKEN">
55 <xs:enumeration value="ReferenceValueDomain"/>
56 </xs:restriction>
57 </xs:simpleType>
58 </xs:element>
59 </xs:sequence>
60 </xs:restriction>
61 </xs:complexContent>
62 </xs:complexType>
63 </xs:element>
64 </xs:sequence>
65 </xs:extension>
66 </xs:complexContent>
67</xs:complexType>
Fragment for the class ReferenceVariable (main ontology)
1# class ReferenceVariable
2# based on the UML class DDICDIModels::DDICDILibrary::Classes::DataDescription::Long::ReferenceVariable
3cdi:ReferenceVariable
4 a rdfs:Class, owl:Class, ucmis:Class;
5 rdfs:label "ReferenceVariable";
6 rdfs:comment "Definition\n============\nVariable that records values of multiple variables in the context of a data structure.\nVariable playing the role of a variable value component.\n\nExamples\n==========\nConsider two variables, i.e. income and age, with values appearing in the same column, e.g. 100000, 45, 85000, 34, etc. \nValues 100000, 45, 85000, 34 are reference values in the reference value domain corresponding to the reference variable."@en;
7 rdfs:subClassOf cdi:RepresentedVariable;
8.
9
10
11cdi:ReferenceVariable_takesValuesFrom_ReferenceValueDomain
12 a rdf:Property, owl:ObjectProperty, ucmis:Association;
13 # ASSOCIATION
14 rdfs:label "takesValuesFrom";
15 skos:altLabel "ReferenceVariable_takesValuesFrom_ReferenceValueDomain";
16 rdfs:comment "Points to a value domain that contains values that may be drawn from the domains of multiple simple variables."@en;
17 rdfs:domain cdi:ReferenceVariable;
18 rdfs:range cdi:ReferenceValueDomain;
19.
Fragment for the class ReferenceVariable (main JSON-LD)
1{
2 "@context": [
3 "RepresentedVariable.jsonld",
4 {
5 "cdi": "http://ddialliance.org/Specification/DDI-CDI/1.0/RDF/",
6 "xsd": "http://www.w3.org/2001/XMLSchema#",
7 "ReferenceVariable": "cdi:ReferenceVariable",
8
9 "takesValuesFrom": {
10 "@id": "cdi:ReferenceVariable_takesValuesFrom_ReferenceValueDomain",
11 "@type": "@id" },
12 "identifies_OF_Descriptor": {
13 "@reverse": "cdi:Descriptor_identifies_ReferenceVariable",
14 "@type": "@id"
15 },
16 " comment ": "tag:json-should-support-trailing-commas"
17 }
18 ],
19 "generatedBy": "This code was generated by the Eclipse Acceleo project UCMIS M2T on 2024-09-23 21:52:58.",
20 "basedOn": "based on the UML data type DDICDIModels::DDICDILibrary::Classes::DataDescription::Long::ReferenceVariable"
21}
