Purpose
The 900000000000538005 | Description format reference set| specifies the text format and maximum length of each supported description type. This permits additional description typesto be specified in future in addition to the three existing description types (synonym, fully specified nameand textual definition).
Data structure
The
900000000000538005
|
Description format reference set|
is a C-I ( component- Integer) reference setwhich is used to specify the length and format of the termsin descriptionsof this description type. Its structure is shown in the following table.
Field | Data type | Purpose | Part of Primary Key | |
id | A 128 bit unsigned Integer, uniquely identifying this reference set member. Different versions of a reference set member share the same id but have different effectiveTime. This allows a reference set member to be modified or made active (i.e. removed from the active set) at a specified time. | NO | YES (Full/ Snapshot) | |
The inclusive date or time at which this version of the identified reference set memberbecame the current version. The current version of this reference set memberat time T is the version with the most recent effectiveTime prior to or equal to time T . | YES | YES (Full) Optional (Snapshot) | ||
The state of the identified reference set memberas at the specified effectiveTime . If active = 1 (true) the reference set memberis part of the current version of the set, if active = 0 (false) the reference set memberis not part of the current version of the set. | YES | NO | ||
Identifies the SNOMED CT modulethat contains this reference set memberas at the specified effectiveTime . The value must be a subtypeof 900000000000443000 | Module (core metadata concept)| within the metadata hierarchy. | YES | NO | ||
Identifies the reference setto which this reference set memberbelongs. In this case, always 900000000000538005 | Description format reference set (foundation metadata concept)| as there is only one Description Format Reference Set. | NO | NO | ||
A reference to the SNOMED CT componentto be included in the reference set. | NO | NO | ||
A reference to a subtypeof 900000000000539002 | Description format (foundation metadata concept)| attribute which specifies the format of termsin descriptionsof this description type. | NO | NO | ||
The maximum length in bytes of the termsin descriptionsof this description type. | NO | NO |
Metadata
The following metadata supports the descriptionformat reference set:
Notes on the tables used to show descriptors and examples The reference set example tables on this page have been revised as follows to aid clarity and understanding:Reference Set Descriptor and Example Data
Descriptor
The table below shows the descriptor that defines the structure of the
900000000000538005
|
Description format reference set|
.
refsetId | referencedComponentId (Referenced component) | attributeDescription (Attribute description) | attributeType (Attribute type) | attributeOrder (Attribute order) |
|---|---|---|---|---|
0 | ||||
1 | ||||
2 |
Example Data
This example holds the all the members of the 900000000000538005 | Description format reference set| in the SNOMED CT International Releasefor July 2014. Other members may added to future versions of the International Releaseif new description typesare introduced. Owners of Extensions that support additional description typesmust also add members to the 900000000000538005 | Description format reference set| .
refsetId | referencedComponentId (Description type component) | descriptionFormat (Description format) | descriptionLength (Description length) |
|---|---|---|---|
255 | |||
255 | |||
4096 |
Note: The tables above omit the initial four columns of data present in the release file. These follow the standards versioning pattern id, effectiveTime, active, active. Additionally, to aid understanding, the tables above also show the termfrom one of the descriptionsassociated with each of the identified concept. The release file only contains the identifier.
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