Purpose

A

Concept

t	900000000000512005\|Query specification type reference set\|

allows a serialised query to represent the membership of a subset of

Gloss

t	SNOMED CT components

. A query contained in the

Gloss

t	reference set

is run against the content of

Gloss

t	SNOMED CT

to produce a subset of

Gloss

t	concepts

,

Gloss

t	descriptions

or

Gloss

t	relationships

. The query is referred to an intensional definition of the subset. It can be run against future releases of

Gloss

t	SNOMED CT

to generate an updated set of subset members.

The members of the resulting subset may also be represented in an enumerated form as a

Gloss

t	Simple reference set

. An enumerated representation of a subset is referred to as an extensional definition.

...

Data structure

A

Gloss

t	Query specification reference set

is a

Specref

RefType	(data type)
t	String

Gloss

t	reference set

containing

Specref

RefType	(field)
t	query

that represent intensional definitions of subsets of

Gloss

t	components

. The result of running the query is an extensional representation of the subset of

Gloss

t	components

which can be represented as a

Gloss

t	Simple reference set

. Its structure is shown in the following table.

Field

Data type

Purpose

Gloss

t

specref

Mutable

RefType

LinkType

(field)t

subtle

Part of Primary Key

id

Specref

RefType	(data type)
t	UUID

A 128 bit unsigned

Specref

RefType	(data type)
t	Integer

, uniquely identifying this

Gloss

t	reference set member

.

Different versions of a reference set member share the same

Specref

RefType	(field)
t	id

but have different

Specref

RefType	(field)
t	effectiveTime

. This allows a reference set member to be modified or made

Specref

RefType	(field)
t	active

(i.e. removed from the active set) at a specified time.

NO

YES (Full/Snapshot)

Specref

RefType	(field)
t	effectiveTime

Specref

RefType	(data type)
t	Time

The inclusive date or time at which this version of the identified

Gloss

Space	true
t	reference set member

became the current version.

The current version of this

Gloss

Space	true
t	reference set member

at time T is the version with the most recent

Specref

RefType	(field)
t	effectiveTime

prior to or equal to time T .

YES

YES (Full)

Optional (Snapshot)

Specref

RefType	(field)
t	active

Specref

RefType	(data type)
t	Boolean

The state of the identified

Gloss

Space	true
t	reference set member

as at the specified

Specref

RefType	(field)
t	effectiveTime

.

If

Specref

RefType	(field)
t	active

= 1 (true) the

Gloss

Space	true
t	reference set member

is part of the current version of the set, if

Specref

RefType	(field)
t	active

= 0 (false) the

Gloss

Space	true
t	reference set member

is not part of the current version of the set.

YES

NO

Specref

RefType	(field)
t	moduleId

Specref

RefType	(data type)
t	SCTID

Identifies the

Gloss

Space	true
t	SNOMED CT module

that contains this

Gloss

Space	true
t	reference set member

as at the specified

Specref

RefType	(field)
t	effectiveTime

.

The value must be a

Gloss

Space	true
t	subtype

of

Concept

t	900000000000443000\|Module (core metadata concept)\|
ShowFormat	inline

within the metadata

Gloss

t	hierarchy

.

YES

NO

Specref

RefType	(field)
t	refsetId

Specref

RefType	(data type)
t	SCTID

Identifies the

Gloss

Space	true
t	reference set

to which this

Gloss

Space	true
t	reference set member

belongs.

In this case,

set to

a subtype descendant of:

Concept

t	900000000000512005\|Query specification type\|

NO

Specref

RefType	(field)
t	referencedComponentId

Specref

RefType	(data type)
t	SCTID

The identifier (

A reference to the

Gloss

Space	true

SpecrefRefType(field)

t

refsetId) of

SNOMED CT component

to be included in the

Gloss

t	reference set

for which members are to be generated.

.

NO

query

Specref

RefType	(data type)
t	String

The serialised query that can be used to (re-)generate the

Gloss

t	reference set

members.

A standard syntax for use in these queries is currently under development and is due for publication in late 2014.

...

YES

NO

...

Metadata

The following metadata in the "Foundation metadata

Gloss

t	concept

"

Gloss

t	hierarchy

supports this

Gloss

t	reference set

:

...

Concept

t	900000000000454005\|Foundation metadata concept\|

Scg expression

Border	ridge


  900000000000454005 |Foundation metadata concept|
		900000000000455006 |Reference set|
				900000000000512005 |Query specification type|
						900000000000513000 |Simple query specification|

Excerpt Include

	REUSE:Notes on Reference Set Example Tables
	REUSE:Notes on Reference Set Example Tables
nopanel	true

Descriptor Template

...

Concept

t	900000000000455006\|Reference set\|

...

Concept

t	900000000000512005\|Query specification type\|

...

Concept
t 900000000000513000|Simple query specification|

...

The table below shows the descriptor that defines the structure of the
Concept
t 900000000000512005|Query specification type reference set|
pattern.
...
refsetId
referencedComponentId
attributeDescription
attributeType
attributeOrder
Concept
t 900000000000456007|Reference set descriptor|
Concept
t 900000000000512005|Query specification type reference set|
Concept
t 900000000000514006|Generated reference set|
Concept
t 900000000000461009|Concept type component|
0
Concept
t 900000000000456007|Reference set descriptor|
Concept
t 900000000000512005|Query specification type reference set|
Concept
t 900000000000515007|Query|
Concept
t 900000000000465000|String|
1

...
Specref
RefType (field)
t id
...
Specref
RefType (field)
t effectiveTime
...
Specref
RefType (field)
t active
...
Specref
RefType (field)
t active
...
...
t term
...
Gloss
t descriptions
...
Gloss
t concept
...
Gloss
t identifier
...

Example Data

In the example below, "serialised query 1" is a text string that can be used to generate members for

Gloss

t	Reference set

1, which is a simple member

Gloss

t	reference set

(without any additional fields within its member records).

...

refsetId

referencedComponentId

query

Concept

t	900000000000513000\|Simple query specification\|

Concept

t	\|Target reference set\|

Serialized text of the query ...

...

The specification of the query

Gloss

t	language

has yet to be defined / selected, but it should be capable of:

Selecting
Gloss
t concepts
using primary fields, subsumption testing,
Gloss
t relationships
,
Specref
RefType (field)
t relationshipGroup
, set operators (
Gloss
t union
,
Gloss
t intersection
, excludes), and lexical query ;
Selecting
Gloss
t descriptions
,
Gloss
t relationships
and
Gloss
t reference sets
using similar mechanisms;
Calculation of values for the
Gloss
t reference set
's extended fields. Identifying the version of the syntax and any
Gloss
t language
syntax variations.
Queries that support definitions for terminologies other than
Gloss
t SNOMED CT
should also be supported. For example, queries to link or include codes in ICD-10, ICD-11, ICPC and
Gloss
t LOINC
.

...

Gloss

t	SNOMED CT concepts

...

Scg expression
< 19829001 \|disorder of lung\|: 116676008 \|associated morphology\| = << 79654002 \|edema\|

References

The syntax for specifying the intensional definition of a concept subset is specified in the DOCECL

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Data structure

Metadata

Descriptor Template

Example Data

References

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Versions Compared

Old Version 4

New Version 5

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Data structure

Metadata

Descriptor Template

Example Data

References