Jigsaw puzzle

Boolean Operators (Connectors)

Boolean operators are used in keyword searches to link together two or more terms. The most commonly-used connectors are: AND and OR.

AND narrows a search; you get fewer records, because all words searched must be present in the records found--see the colored area below. Use AND to combine different concepts in one search.

Graph for an AND search

OR broadens a search; you get more records because one or more of the words searched will be found within the records. OR is often used to link together related concepts.

Graph for an OR search