Release File Specification

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The Description file holdsthat describe. Ais describeAis used to give meaning to aand provide well-understood and standard ways of referring to a.

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Table 10. Description file - Detailed SpecificationeffectiveTime fieldBoolean

 

 

 

Field

Data type

Immutable

Purpose

Part of Primary Key

id

SCTID (data type)

Y

Uniquely identifies the.

YES
(Full/Snapshot) 

effectiveTimefield)

Time (data type)

N

Specifies the inclusive date at which the component version's state became the then current valid state of the componentactive

YES (Full)
Optional (Snapshot) 

active

Booleandata type)

N

Specifies whether the 's state wasorfrom of thewasorfrom the nominal release date specified by the effectiveTime (field) .

NO

moduleId (field)

SCTID (data type)

N

Identifies theversion's module. Set to aof

Scg expression
ShowPartsid+term
900000000000443000|Module|
within the metadata.

NO

conceptId

SCTID (data type)

Y

Identifies theto which thisbelongsthisapplies. Set to anof theof ain the

Scg expression
ShowPartsid+term
138875005|SNOMED CT Concept|
within the Concept file. Note that versions ofanddon't belong to each other. Which version of any givenis combined with which version of its owningdepends on a specific version of ais not directly bound to a specific version of theto which it applies. Which version of aapplies to adepends on its effectiveTime and the point in time at which they are it is accessed.

NO

languageCode

String (data type)

Y

Specifies theof thetext using the two character ISO-639-1 code. Note that this specifies alevel only, not aor country code.

NO

typeId (field)

SCTID (data type)

Y

Identifies whether theis an FSN,or theisaor othertype. This field is set to aof

Scg expression
ShowPartsid+term
900000000000446008|Description type|
in the Metadata.

NO

term

String (data type)

N

Theversion's text value, represented in UTF-8 encoding.

NO

caseSignificanceId (field)

SCTID (data type)

N

Identifies theenumeration value that represents the case significance of thisversion. For example, the term may be completely case sensitive, case insensitive or initial letter case insensitive. This field will be set to aof

Scg expression
ShowPartsid+term
900000000000447004|Case significance|
within the metadata.

NO

Only onerecord with the same id field will be current at any point in time. The current record will be the one with the most recent effectiveTime (field) before or equal to the point in time under consideration.

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The conceptId field, the languageCode field and the typeId (field) field will not change between two rows with the same id, in other words they are immutable. Where a change is required to one of these fields, then the current row will be de-activated component will be inactivated (by appending a row with the same id and thefield set to false) and a another row will be added representing a new row with component with a new id will be appended. Only limited changes may be made to the ' term ' field field, as defined by editorial rules.

Eachwill have at least onewith a typeId (field) of

Scg expression
ShowPartsterm
ShowFormatnospace
900000000000013009|synonym|
and at least onewith a typeId of
Scg expression
ShowPartsterm
ShowFormatnospace
900000000000003001 |Fully specified name|
.

of || for a given languageCode (like "en"). Where aonly has onewith a typeId (field) of || for a givencode, then thatcan be taken as thefor thatand each of its, and need not therefore be explicitly included infor that. Where aonly has onewith a typeId (field) of || of

Scg expression
ShowPartsterm
900000000000003001 |Fully specified name|
across allcodes within a release, then thatcan be taken as thefor alland, and allandand need not therefore be explicitly included in anyin everyassociated with that release.

The term ( field ) field will be restricted as follows:

  • to an overall maximum length of 32Kb;

  • to a maximum length, configurable for eachtype (as defined by theTypemember associated with thattype eachas defined in the

    Scg expression
    ShowPartsterm
    900000000000538005 |Description format reference set|
    member associated with that- see the Description Format Reference Set specifications document for more details.

  • The

    Scg expression
    ShowPartsterm
    900000000000538005 |Description format reference set|
    also defined the format of the term field (plain text, limited HTML, XHTML,) will also be configurable for eachtype, using the same mechanism as above;for each

  • Control characters (including TABs, CRs and LFs) will not appear in

    Scg expression
    ShowPartsterm
    900000000000540000 |Plain text|

    and 

    or
     Scg expression
    ShowPartsterm
    900000000000541001 |Limited HTML|
     format 
     format types.
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