VariableDescriptorComponent

Generalization is DataStructureComponent.

Superclass hierarchy

Definition

Role given to a represented variable in the context of a data structure to provide codes for variable identification.

Examples

Consider {“income”, “age”} to be the value domain of the represented variable working as a variable descriptor component. The two codes, i.e. “income” and “age”, are descriptors used to identify which values in the variable value component correspond to income and which ones to age.

Explanatory notes

Whenever more than one variable appears in the same column, we need a mechanism to distinguish which values correspond to which variable. This mechanism is provided by the variable descriptor component, which contains the codes used to link the variables to their values. This structure provides a flexible mechanism avoiding the need for a formal pointer.


Subclasses


Inherited Properties

Name

Description

Data Type

Multi- plicity

semantic

The semantic of the DataStructureComponent expressed as a PairedExternalControlledVocabulary.

PairedExternalControlledVocabularyEntry

0..*

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

Associations

Multiplicity

Association

Navigable Class

Multiplicity

1..1

VariableDescriptorComponent_refersTo_VariableValueComponent

VariableValueComponent

1..1

0..*

VariableDescriptorComponent_isDefinedBy_DescriptorVariable

DescriptorVariable

0..1

TBD

Diagram

TBD