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Lee and Jim Vann Library

Subject Guides

Teaching Strategies for English Language Learners: Databases

Boolean Logic

Boolean Logic

The following operators can narrow or expand your search. 

AND greatly narrows your search by only including information pertaining to both concepts. 

peanut butter AND jelly= information about both peanut butter and jelly

NOT slightly narrows your search by only including information pertaining to one concept and not the other. 

peanut butter NOT jelly= information about peanut butter but not jelly

OR broadens your search by including information pertaining to either concept.   

peanut butter or jelly= information about either peanut butter or jelly 

boolean operators image

Keywords vs. Subject Searching

Useful Databases

Useful Databases


Lee & Jim Vann Library

Pope John Paul II Center

First and Second Floor

Room 101 & 201