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' |