|
QUERY LANGUAGE
The text search engine
allows queries to be formed from arbitrary Boolean expressions
containing the keywords AND, OR, and NOT, and grouped with
parentheses. For example:
-
information retrieval
- finds documents
containing 'information' or 'retrieval'
-
information or retrieval
- same as above
-
information and retrieval
- finds documents
containing both 'information' and 'retrieval'
-
information not retrieval
- finds documents
containing 'information' but not 'retrieval'
-
(information not retrieval) and WAIS
- finds documents
containing 'WAIS', plus 'information' but not 'retrieval'
-
web*
- finds documents
containing words starting with 'web'
|
