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DATABASE VENDORS |
Boolean Operators
explanation |
Truncations
explanation |
Single-Character Wildcard
explanation |
Multi-Character Wildcard
explanation |
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CRIS |
AND, OR, NOT, ; |
child ? |
wom ?n |
col ?r |
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Cambridge Sci. Abstr. (CSA) |
AND, OR, NOT, "" |
child * |
wom ?n |
col *r |
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Chemical Abstracts |
N / A |
child ? |
wom #n |
col ?r |
EBSCO |
AND, OR, NOT, "",
N(#) = near
W# = within | child* |
wom?n |
wom?n |
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Expanded Academic |
AND, OR |
N / A |
N / A |
N / A |
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FAO Stat Statistics |
AND, OR |
N / A |
N / A |
N / A |
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FirstSearch |
AND, OR, NOT |
child */
child+ |
wom #n |
col ?r |
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Ovid |
AND, OR, NOT, NEAR, "" |
child $/
child: |
wom #n |
col ?r |
Gateway |
AND, OR |
child ? |
wom #n |
col ?r |
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Web of Science |
AND, OR, NOT, SAME |
child * |
wom ?n,
wom*n |
col *r |
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WebSPIRS |
AND, OR, NOT, NEAR, "" |
child * |
wom ?n |
fly **/
col?r |
**Please read the explanations below for further assistance.**
Boolean Operators: Basic commands that expand or limit the search.
AND: All terms joined by AND must occur in the record.
NOT: The term following NOT must be absent from the
record.
SAME: The terms joined by SAME must occur in the same record.
OR: Any one of the terms joined by OR must occur in the
record.
NEAR: The terms joined by NEAR must be in the same field of the record, e.g., both in the abstract.
Truncations: Searches by the root of the word and for anything added onto the trunk of the word.
? -- For example, enter "child?" to search for child, children, childhood, etc.
* -- For example, enter "child*" to search for child, children, childhood, etc.
$ -- For example, enter "child$" to search for child, children, childhood, etc.
Single-Character Wildcard:
Substitutes one letter to search for alternate spellings.
? -- For example, enter "wom?n" to search for woman or women.
# -- For example, enter "wom#n" to search for woman or women.
* -- For example, enter "wom*n" to search for woman or women.
Multiple-Character Wildcard: Substitutes one or more letters to search for alternate spellings.
? -- For example, enter "col?r" to search for color or colour.
* -- For example, enter "col*r" to search for color or colour.
** -- For example, enter "col**r" to search for color or colour.
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