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green rule

Boolean Operator: AND


AND retrieves only those records that contain all of the search terms somewhere in the record,
For example:
This search statement...
animated Venn diagram of AND subset (37KB)
...will find records containing both global and warming although not necessarily together or in that order. When you combine search terms with the Boolean Operator AND, the terms can be in any order and in different fields (i.e. the title might include the word global while the word warming might appear only in the abstract).

green rule
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Adapted with permission from Oasis, San Francisco State University http://oasis.sfsu.edu

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