VariableCollection

Generalization is InformationObject.

Superclass hierarchy

Definition

Collection (group) of any type of variable within the variable cascade (conceptual, represented, instance).

Examples

Variables within a specific section of a study, Variables related to a specific subject or keyword. Variables at a specified level of development or review.

Explanatory notes

A simple ordered or unordered list of variables can be described via a set of VariableIndicator parameters. An optional VariableStructure can describe a more complex structure for the collection. We might, for example, use the VariableStructure to group variables by content within a Study or across a StudySeries. For the purposes of management, conceptualization or anything other than organizing a logical record or physical layout.


Subclasses


Properties

Name

Description

Data Type

Multi- plicity

displayLabel

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..*

duplicates

:ref:``

1..1

groupingSemantic

A semantic term defining the factor used for defining this group.

ExternalControlledVocabularyEntry

0..1

name

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..*

purpose

Explanation of the intent of some decision or object. Supports the use of multiple languages and structured text.

InternationalStructuredString

0..1

usage

Explanation of the ways in which some decision or object is employed. Supports the use of multiple languages and structured text.

InternationalStructuredString

0..1

Inherited Properties

Name

Description

Data Type

Multi- plicity

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

0..*

VariableCollection_isDefinedBy_Concept

Concept

0..*

0..*

VariableCollection_has_VariablePosition

VariableCollection

1..1

0..*

VariableCollection_has_ConceptualVariable

VariableCollection

0..*

TBD

Diagram

TBD