Since library databases work a bit differently than Google, you may notice that putting in a sentence or question into the Search Everything box on the library homepage doesn’t give you results you want. Often called “Boolean operators,” connectors AND, OR, and NOT will make the database search for your keywords in a specific way.
Tip! These are in all capitals so that the databases see them as connectors and not keywords to search!
- AND will reduce your results and only show sources that contain both the keywords it connects.
- OR will expand your results and show sources that have either keyword or both keywords.
- NOT will reduce your results by excluding sources that contain the keyword to its right.
Example: Adding the connector AND in between the keywords picked out from your assignment will make the database search for sources that contain both keywords.
exercise AND "childhood obesity"
Text form of Boolean Operator Venn diagrams
|Shrinks your search results
||Shrinks your search results
||Expands your search results
|Only shows results that contain both keywords
||Will exclude any results that have second keyword
||Allows for either keyword or an intersection of both
|Example: I want both soup and salad for lunch.
||Example: I only want soup, I do not want salad for lunch.
||Example: I'm fine with either soup or salad, or even both for lunch.
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