Purpose
An 447258008 $$ Ordered type reference set $$ allows a collection of components to be defined with a specified given a priority ordering. This type of reference ret can also be used to specify ordered associations between different components. These can be used to specify several interrelated subsets of components and to define alternative hierarchies for navigation and selection of concepts or descriptions .
Data structure
An Ordered reference set is an Integer Component reference set is used to represent ordered lists and alternative hierarchies. Its structure is shown in the following table.
Table 22. Ordered reference set - Data structure |
|
|
---|---|---|
Field |
Data type |
Purpose |
A 128 bit unsigned integer, uniquely identifying this reference set member . |
||
The inclusive date or time at which this version of the identified reference set member became the current version. |
||
The state of the identified reference set member as at the specified effectiveTime . |
||
Identifies the SNOMED CT module that contains this reference set member as at the specified effectiveTime . |
||
Identifies the reference set to which this reference set member belongs. |
||
The identifier of a SNOMED CT component that is included in the ordered list of alternative hierarchy. |
||
Specifies the sort order of the list. The list is ordered by applying an ascending sort of the order value. |
||
The identifier of a SNOMED CT component that acts as a grouper or hierarchy node, collecting together a subgroup from within the list. |
Metadata
The following metadata in the "Foundation metadata concept " hierarchy supports this reference set :
Figure 9. Ordered References Sets in the Metadata Hierarchy
Descriptor template and examples
The tables below show the descriptor that defines the structure of the 447258008 $$ Ordered type reference set $$ pattern and an example of descriptor for a specific reference set that follows this pattern.
Table 23. Refset Descriptor rows for 447258008 $$ Ordered type reference set $$ |
|
|
|
|
|
---|---|---|---|---|---|
refsetId |
referencedComponentId |
attributeDescription |
attributeType |
attributeOrder |
|
0 |
|||||
1 |
|||||
2 |
|||||
Table 24. Refset Descriptor rows for 447570008 $$ SNOMED CT top level navigation hierarchy ordered reference set $$ . |
|
|
|
|
|
refsetId |
referencedComponentId (Referenced component) |
attributeDescription (Attribute description) |
attributeType (Attribute type) |
attributeOrder (Attribute order) |
|
447570008 $$ SNOMED CT top level navigation hierarchy ordered reference set $$ |
0 |
|
|||
447570008 $$ SNOMED CT top level navigation hierarchy ordered reference set $$ |
1 |
|
|||
447570008 $$ SNOMED CT top level navigation hierarchy ordered reference set $$ |
2 |
|
Note: The table above omits the initial four columns of data present in the release file. These follow the standards versioning pattern id, effectiveTime, active, moduleId. Additionally, to aid understanding, the table above also shows the term from one of the descriptions associated with each of the identified concept. The release file only contains the identifier .
Ordered reference set example
Feedback