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A Boolean search is the most elementary form of search technique employed to search for information on internet search engines or databases. A Boolean search provides the basic and the most effective principles of searching on the web. Boolean searches include the operators: AND, OR, NOT and NEAR, which are used in sentences with keywords when searching for information.
A Boolean search is also known as a Boolean query.
A Boolean search, which is derived from the famous Boolean logic developed by George Boole, an English mathematician in the 19th century, is useful in internet and database searches.
When using the Boolean search method, one can either use the words or their equivalent mathematical symbol, as given below: