Create a Search Strategy |
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Connectors Connectors (Boolean operators) are used in keyword searches to link together two or more terms. The most commonly-used connectors are: AND and OR. |
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AND narrows a search; you get fewer records, because both concepts must be present in the records found--here the area in blue. Use AND to combine different concepts in one search. |
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OR broadens a search; you get more records because OR includes each of the concepts separately, as well as both concepts when found together. OR is often used to link together related concepts. |
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computer AND history AND mathematics |
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computer OR history OR mathematics |
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Click this link for a demonstration of how Boolean operators work: http://kathyschrock.net/rbs3k/boolean/ |
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