ClassificationItem

Superclass hierarchy

Definition

Placeholder for a category within a statistical classification.

Examples

In the 2012 NAICS (North American Industry Classification System) one Classification Item has the Category construction, and has the Code 23, which designates construction in NAICS.

Explanatory notes

A Classification Item defines the content and the borders of the Category. A Unit can be classified to one and only one item at each Level of a Statistical Classification. As such a Classification Item is a placeholder for a position in a StatisitcalClassification. It contains a Designation, for which Code is a kind; a Category; and other things.

This differentiates it from Code which is a kind of Designation, in particular it is an alphanumeric string assigned to stand in place of a category. For example, the letter M might stand for the category Male in the CodeList called Gender.

Statistical Classificatinos often have multiple “levels”. A level is defined as a set of Classification Items each the same number of relationships from the top or root Classification Item.


Subclasses


Properties

Name

Description

Data Type

Multi- plicity

changeFromPreviousVersion

Describes the changes, which the item has been subject to from the previous version to the actual Statistical Classification.

InternationalString

0..1

changeLog

Describes the changes, which the item has been subject to during the life time of the actual Statistical Classification.

InternationalString

0..1

explanatoryNotes

A Classification Item may be associated with explanatory notes, which further describe and clarify the contents of the Category. Explanatory notes consist of: General note: Contains either additional information about the Category, or a general description of the Category, which is not structured according to the “includes”, “includes also”, “excludes” pattern. Includes: Specifies the contents of the Category. Includes also: A list of borderline cases, which belong to the described Category. Excludes: A list of borderline cases, which do not belong to the described Category. Excluded cases may contain a reference to the Classification Items to which the excluded cases belong.

InternationalStructuredString

0..*

futureNotes

The future events describe a change (or a number of changes) related to an invalid item. These changes may e.g. have turned the now invalid item into one or several successor items. This allows the possibility to follow successors of the item in the future.

InternationalString

0..*

isGenerated

Indicates whether or not the item has been generated to make the level to which it belongs complete.

:ref:``

0..1

isValid

Indicates whether or not the item is currently valid. If updates are allowed in the Statistical Classification, an item may be restricted in its validity, i.e. it may become valid or invalid after the Statistical Classification has been released.

:ref:``

0..1

name

A Classification Item has a name as provided by the owner or maintenance unit. The name describes the content of the category. The name is unique within the Statistical Classification to which the item belongs, except for categories that are identical at more than one level in a hierarchical classification. Use the context attribute to identify Official Name or alternate names for the Classification Item.

ObjectName

0..*

validDates

Dates for which the classification is valid. Date from which the item became valid. The date must be defined if the item belongs to a floating Statistical classification. Date at which the item became invalid. The date must be defined if the item belongs to a floating Statistical classification and is no longer valid.

DateRange

0..1

Inherited Properties

Associations

Multiplicity

Association

Navigable Class

Multiplicity

0..*

ClassificationItem_hasRulingBy_AuthorizationSource

AuthorizationSource

0..*

0..*

ClassificationItem_uses_Notation

Notation

1..1

0..*

ClassificationItem_excludes_ClassificationItem

ClassificationItem

0..*

0..*

ClassificationItem_denotes_Category

Category

1..1

TBD

Diagram

TBD