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Sisters in the Struggle: Kentucky Women in the Civil Rights Era, 1920s-1970s: 2c. Boolean Operators

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  What Are Boolean Operators?

This video explains what Boolean operators are and how you can use them in database searching.
Video used with permission from University of Aukland, NZ under Creative Commons license cc-by-an-sa.

Boolean Operators - Examples

Boolean searching is the traditional way to search for information in most online databases and on the Internet. Boolean operators or connector words, such as AND, OR, and NOT, are used to create phrases and concepts based on specific rules of search logic.  

Operator Examples Results
AND


business AND ethics
cookery AND Spain

Retrieves records that contain    
ALL of the search terms.
OR


hotels OR motels
www OR world wide web
theater OR theatre

Retrieves records that contain
ANY of the search terms but
does not necessarily include
all of them.
NOT


java NOT coffee
Clinton NOT (William OR Bill)    

Excludes records containing
the second search term.