Boolean, Proximity, and Frequency Operators
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Cathy Cotter March ‘10
Amended from the original drafted by
Annette Demers, University of Windsor Law Library
BOOLEAN, PROXIMITY, and FREQUENCY OPERATORS*
OPERATION |
EXAMPLES |
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QUICKLAW/LEXISNEXIS |
WESTLAW CANADA |
CCH |
MARITIME LAW BOOK |
BOOLEAN |
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AND |
child and custody |
child and custody |
child and custody |
child and custody |
OR |
drunk or impaired |
drunk impaired
drunk or impaired |
drunk xor impaired |
drunk or impaired |
NOT |
car and not truck |
car % truck |
car not truck |
car not truck |
PHRASE |
human rights
“human rights” |
“human rights” |
“human rights” |
human rights |
Truncation |
divorc! |
divorc! |
divorc* |
divorc* |
Wildcard |
practi*e |
practi*e |
practi?e |
practi*e |
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PROXIMITY |
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Within X words
(can be any #) |
duty /2 care |
duty /2 care |
“duty care”@2 |
duty /2/ care |
Within the same paragraph |
circumstantial /p evidence |
circumstantial /p evidence |
not used |
circumstantial // evidence |
Within the same sentence |
torture /s Guantanamo |
torture /s Guantanamo |
not used |
not used |
Preceding within X words
(can be any #) |
rule +2 perpetuities |
rule +2 perpetuities |
“rule perpetuities”/2 |
Rule /-2/ perpetuities |
Preceding within the same paragraph |
not used |
rebut +p presumption |
not used |
not used |
Preceding within the same sentence |
not used |
right +s refusal |
not used |
not used |
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FREQUENCY |
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Word/term has to appear at least X number of times
(can be any #) |
atleast5(negligence) |
atleast5(negligence) – cannot use this when searching cases or legislation, only when searching the Abridgment, ICLL, CED, Canada-JLR. |
not used |
not used |
* These are only a few of the connectors available for use in these products. Make sure you look at the help pages in each database to get a better idea of all the connectors available to you.
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