Purpose
An
447258008 |Ordered type reference set|
allows a collection ofto be defined with a specified given a priority ordering. This type of
can also be used to specify ordered associations between different
. These can be used to specify several interrelated subsets of components and to define alternative hierarchies for navigation and selection of
or
.
Data structure
Anis an Integer
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 (data type), uniquely identifying this Different versions of a reference set member share the same id (field) but have different effectiveTime (field). This allows a reference set member to be modified or made active (field) (i.e. removed from the active set) at a specified time. | ||
The inclusive date or time at which this version of the identified The current version of this | ||
The state of the identified If active (field) = 1 (true) the | ||
Identifies the The value must be a | ||
Identifies the In this case, set to a | ||
The identifier of a | ||
Specifies the sort order (field) of the list. The list is ordered by applying an ascending sort of the order (field) value. The value of order (field) =1 represents the highest priority. A value of '0' is not allowed. Duplicate values are permitted and the sort order between two members with the same order value is not defined. If the linkedToId (field) value is not 0, sorting occurs within subgroups that share the same linkedToId (field). Note: The name "order" is a reserved word in some database environments. Please consider this when using this column. | ||
The identifier of a This field either enables To link members into a subgroup, all components in the same subgroup should reference the same To link a number of For ordered lists that do not require grouping or hierarchical arrangement the value of linkedToId (field) should be the digit zero (0). |
Metadata
The following metadata in the "Foundation metadata"
supports this
:
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 specificthat 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) |
|
0 |
| ||||
1 |
| ||||
2 |
|
Note: The table above omits the initial four columns of data present in the release file. These follow the standards versioning pattern id (field), effectiveTime (field), active (field), active (field). Additionally, to aid understanding, the table above also shows thefrom one of the
associated with each of the identified
. The release file only contains the
.
Ordered reference set example
Table 25. Sample content from 447570008 |SNOMED CT top level navigation hierarchy ordered reference set| . |
|
|
|
|---|---|---|---|
refsetId | referencedComponentId (Referenced component) | order (Attribute order) | linkedTo ("Linked to" reference set attribute) |
1 | |||
2 | |||
3 | |||
4 | |||
5 | |||
6 | |||
7 | |||
8 | |||
9 | |||
10 |
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