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WRI 420: Document Design

Library Instruction Session

During our session today you'll be asked to participate in an online activity. 

Access the online activity here or text TRACY000 to 37607 to respond by phone


Boolean Operators

Databases require a different kind of search technique. Instead of entering a long string of text, you connect your search terms using Boolean Operators: AND, OR and NOT. The diagram below shows the effect of using each of the Boolean Operators. The colored area indicates the volume of items that will be retrieved in each case.
 Venn diagram showing Boolean Operators