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'
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info@pirweb.org