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Current Version - Under Revision

The following five tables are included in the Developer Toolkit of SNOMED CT . These tables are derived from the SNOMED CT Descriptions Table. The LanguageCode of the Description file is used to choose only descriptions for a language .

Table 27. Summary of Word Search Tables

 

Table

Description

Excluded words table

Each row in this table is a word excluded from the list of possible keywords and dualkeys . Words are excluded if they are frequently used and are so limited in semantic specificity that they impair rather than enhance searches.

DescWordKey Table

Each row in this table is a word followed by a reference to a Description in which this word appears.

ConcWordKey Table

Each row in this table is a word followed by a reference to a Concept . A Concept is referenced if the word appears anywhere in the combination of the Fully Specified Name with the current valid Preferred Term and Synonyms .

DescDualKey Table

Each row in this table is a six-character string representing the first three letters of a pair of words followed by a reference to a Description in which these two words appear.

ConcDualKey Table

Each row in this table is a six-character string representing the first three letters of a pair of words followed by a reference to a Concept . A Concept is referenced if both words appear anywhere in the combination of the Fully Specified Name with the current valid Preferred Term and Synonyms .

All keywords are regarded as case independent and are presented in the word search tables in upper case. Case dependent searching can be applied by appropriately filtering the candidate matches.


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