RepresentedVariable

Generalization is ConceptualVariable.

Superclass hierarchy

Definition

ConceptualVariable with a substantive value domain specified.

Examples

The pair (Number of Employees, Integer), where “Number of Employees” is the characteristic of the population (Variable) and “Integer” is how that measure will be represented (Value Domain).

Explanatory notes

Extends from ConceptualVariable and can contain all descriptive fields without creating a ConceptualVariable. By referencing a ConceptualVariable it can indicate a common relationship with RepresentedVariables expressing the same characteristic of a universe measured in another way, such as Age of Persons in hours rather than years. RepresentedVariable constrains the coverage of the UnitType to a specific Universe. In the above case the Universe with the measurement of Age in hours may be constrained to Persons under 5 days (120 hours old). RepresentedVariable can define sentinel values for multiple storage systems which have the same conceptual domain but specialized value domains.



Properties

Name

Description

Data Type

Multi- plicity

hasIntendedDataType

The data type intended to be used by this variable. Supports the optional use of an external controlled vocabulary.

ExternalControlledVocabularyEntry

0..1

unitOfMeasurement

The unit in which the data values are measured (kg, pound, euro).

:ref:``

0..1

Inherited Properties

Name

Description

Data Type

Multi- plicity

descriptiveText

A short natural language account of the characteristics of the object.

InternationalStructuredString

0..1

agency

Agency expressed as filed with the DDI Agency ID registry [registry.ddialliance.org] with optional additional sub-agency extensions.

:ref:``

1..1

id

ID conforming to the allowed structure of the DDI Identifier and must be unique within the Agency.

:ref:``

1..1

isPersistent

Default value is false indicating that the content of the current version may change (may be in development mode). Set to true when the content of this version will no longer change.

:ref:``

1..1

isUniversallyUnique

Default value is false. If the id of the object was created as a Universally Unique ID (UUID) set to true.

:ref:``

1..1

localId

Locally used identifier unique with a specified context, such as a variable name within a dataset.

LocalIdFormat

0..*

version

Version number of the object.

:ref:``

1..1

versionDate

Date and time the object was changed expressed in standard ISO formats.

XSDdate

0..1

versionRationale

Reason for making a new version of the object.

RationaleDefinition

0..1

versionResponsibility

Contributor who has the ownership and responsibility for the current version.

:ref:``

0..1

definition
from Concept

Natural language statement conveying the meaning of a concept, differentiating it from other concepts. Supports the use of multiple languages and structured text.

InternationalStructuredString

0..1

displayLabel
from Concept

A structured display label providing a fully human readable display for the identification of the object. Supports the use of multiple languages and structured text.

LabelForDisplay

0..*

name
from Concept

A linguistic signifier. Human understandable name (word, phrase, or mnemonic) that reflects the ISO/IEC 11179-5 naming principles. If more than one name is provided provide a context to differentiate usage.

ObjectName

0..*

Associations

Multiplicity

Association

Navigable Class

Multiplicity

0..*

RepresentedVariable_isBasedOn_ConceptualVariable

ConceptualVariable

0..1

0..*

RepresentedVariable_measures_Universe

Universe

0..1

0..*

RepresentedVariable_takesSentinelValuesFrom_SentinelValueDomain

SentinelValueDomain

0..*

0..*

RepresentedVariable_takesSubstantiveValuesFrom_SubstantiveValueDomain

SubstantiveValueDomain

0..1

TBD

Diagram

TBD