Proposal in progress

XCodeUnorderedRelation

An unordered (nominal relationship) set of Codes.

XCodeStrictListRelation

Subtype of Code collection supporting a strict order list.

XCodeStrictListItem

defines the order and member of a list item

XCodeLevelItem

A specialized strict list item allowing a level item to contain an orderNumber (the level being described), one or more base collection types as items (generally UnorderedLists), and any hierarchical relations between the level being described and the next level in the order. Allows the level to be defined by a concept

XCodeList

A collection of codes used to represent a CategorySet for use as a type of Enumerated Value Domain

XCodeBaseRelation

The abstract base for CodeRelations allowing alternate sub-types to be used as needed.

XCodeItem

Ties the CodeValue (representation) to a Category (denotation) for use in a CodeList.

LevelItem

A specialized strict list item allowing a level item to contain an orderNumber (the level being described), one or more base collection types as items (generally UnorderedLists), and any hierarchical relations between the level being described and the next level in the order. Allows the level to be defined by a concept

XLevel

This relationship describes the levels within a hierarchical structure. It allows for strict ordering of the hierarchy, optionally relating a concept to the level, and identification of the relationships within the level. This allows clear identification of all relationships making up a hierarchical collection. When the member of a level is defined as an OrderedRelation, the source target of each member is considered to be a member of the level.

XCategoryParentChildRelation

This class describes directional (ordered) relations between two objects, a source and a target. The relationship is only implied between the two classes and the members of those classes. For example if the relationship is defined by setting the Relation Specification to ParentChild when realizing this class, the parent designated in the domain is the parent of all the objects listed in a collection identified as the range.

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