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The Boolean operators, AND, OR, and NOT, help you construct a logical search. Boolean Operators: A Cheat Sheet The circle diagrams that help illustrate the relationships between the sets used in Boolean logic were named after another mathematician, John Venn.
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BetaBoolean Operators . Allow a database search to be narrowed, broadened or made more precise. There are three Boolean operators: AND, OR, and NOT. AND, OR, NOT are inserted between each search term. AND . Used for narrowing or focusing a search topic. Specifies that both search terms must be present in the results. Example: Teenagers AND Violence. OR
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BetaBoolean Modifiers can further expand, refine, and improve a search.Boolean modifiers include the asterisk, *, (also known as truncation/wildcard searching), (parentheses), and "quotation marks. The asterisk, *, attaches to the stem of a word and searches for any word which includes that stem, or the letters before the asterisk. Therefore, you will get results with different endings but all the ...
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BetaThree Boolean operators are recognized by most databases: AND, OR, and NOT; The operators must be written in ALL CAPS (there may be exceptions, but this is good practice and helps you keep track of your search terms) The default in most databases is to combine the terms with the AND operator ("Ilene health 2015" becomes "Ilene AND health AND 2015")
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BetaBoolean operators are words or symbols used as conjunctions to combine or exclude keywords in a search. Using these operators, you are able to focus your search on the results that will be most helpful. Google also has a few additional operators that work to refine results. Below are common boolean operators that work when searching within ...
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BetaUsing a Boolean Operator will tell the database to connect the terms together in your search. There are three Boolean Operators: AND: All keywords must appear in your results. AND will narrow down a search. OR: Either of the keywords must appear in the results. OR will give you more results. NOT: Excludes certain keywords from your results. NOT ...
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BetaA Boolean Operator is a simple word that communicates search strategies to a computer. This might seem like something technical, but it's actually used very commonly. In fact, if you've ever Googled something (which, let's be honest, you have), you've technically used Boolean operators (they just added them automatically for you).
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BetaBoolean operators use AND, OR, NOT to limit or expand a search. (Note the capitalization. Many databases require operators to be in all caps, as do search engines like Google, which also allows for Boolean based searches.) AND narrows a search by requiring the results contain both of the search terms connected by AND.
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BetaThey are common across most databases and search engines. Boolean operators must always be typed using FULL CAPITALISATION. The database will otherwise treat the word in lowercase as part of your search statement. Searching for dogs or cats is not the same as searching for dogs OR cats. Don't make this mistake or your results will be skewed!
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BetaSearch operators are a set of commands that can be used in almost every search engine, database, or online catalogue. The most popular operators are AND, OR, and NOT. These must all be in capital letters to work. Other operators include parentheses, truncation, and phrases. Use the following search operators to broaden or narrow your results.
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Searches related to boolean operators in search engines
