RepresentedVariable - Properties and Relationships — DDI 4.0 dev documentation

# RepresentedVariable - Properties and Relationships

## Properties

Name | Type | Cardinality
--- | --- | ---
hasIntendedDataType | ExternalControlledVocabularyEntry | 0..1
unitOfMeasurement | String | 0..1

### hasIntendedDataType

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

### unitOfMeasurement

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

## Relationships

Name | Type | Cardinality
--- | --- | ---
basedOnConceptualVariable | ConceptualVariable | 0..n
drawsFrom | Universe | 0..n
takesPlatformSpecificSentinelValues | SentinelValueDomain | 0..n
takesSubstantiveValuesFrom | SubstantiveValueDomain | 0..n

### basedOnConceptualVariable

The ConceptualVariable that can be shared by a set of multiple RepresentedVariables. Indicates comparability in ConceptualDomain and UnitType.

### drawsFrom

The defined class of people, entities, events, or objects to be measured.

### takesPlatformSpecificSentinelValues

A RepresentedVariable may have more than one sets of SentinelValueDomains, one for each type of software platform on which related InstanceVariables might be instantiated. All of the SentinelValueDomains must have SentinelConceptualDomains that correspond exactly. This allows codes for missing values to be explicitly matched across platforms.

### takesSubstantiveValuesFrom

The substantive representation (SubstantiveValueDomain) of the variable. This is equivalent to the relationship “Measures” in GSIM although GSIM makes no distinction between substantive and sentinel values