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2.3.2.3 The NOT operator

 
Identify and obtain  information
2.1 Define your search terms
2.2 An example search strategy
2.3 Search strategies
  2.3.1 Keyword or subject searching?
2.3.2 Boolean operators
    AND operator
    OR operator
  * NOT operator
  2.3.3 Mathematical operators
  2.3.4 Nesting
  2.3.5 Phrase searching
  2.3.6 Truncation and wildcards
  2.3.7 Prepare a search strategy
2.4 Select an appropriate tool
2.5 Keep up to date
- - - - -
Glossary

The NOT operator finds items which include the first term, but not the second term.

Use not with caution because you may inadvertently exclude useful material.

For example: (beverages not alcoholic) excludes any record containing the second term.

Image of two circles, labelled "B" and "A". "B" is dark and slightly overlaps the pale "A" in the background. This represents search results that include the term beverages, excluding records containing the term alcoholic.




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