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There are different ways of representing a terminology query that can be sent to a

Gloss
tterminology server
:

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    _e7b13730-888e-11e1-b0c4-0800200c9a66__0
    _e7b13730-888e-11e1-b0c4-0800200c9a66__0
    Gloss
    tConcept
    and
    Gloss
    tRefset
    references: lists of Ids of
    Gloss
    tconcept
    that can be retrieved from the server.
  • Text based queries: text phrases that will be applied to
    Gloss
    Spacetrue
    tconcept
    Gloss
    tDescriptions
    in order to retrieve results for the query.
  • Gloss
    tConcept
    definition queries: the query provides a
    Gloss
    tconcept
    definition, and the server returns all
    Gloss
    tconcepts
    that are subsumed by, or are equivalent to the definition.
  • Gloss
    tExpression
    retrieval: predicate terminology
    Gloss
    texpressions
    that can be applied to all candidate
    Gloss
    tconcepts
    in the terminology to test for inclusion in the results, with filtering by hierarchy and attributes. These
    Gloss
    texpressions
    are defined using a standard
    Gloss
    texpression
    grammar that can be parsed and transformed in order to be evaluated against candidate
    Gloss
    tconcepts
    .
  • Query languages: a query language combines any of the previous data retrieval techniques in the same syntax, including references to
    Gloss
    tconcepts
    by Ids, by text searches, by
    Gloss
    trefsets
    or by hierarchy and attributes.