May 2, 2022 · You can use Boolean operators such as AND, OR, and NOT alongside keywords to create a Boolean string that will refine your search to find the most relevant results and sources.

Nov 15, 2024 · Boolean logic (named after mathematician George Boole) is a system of logic to designed to yield optimal search results. The Boolean operators, AND, OR, and NOT, help you …

Jun 5, 2024 · Boolean operators, such as “AND” and “OR,” are the words and symbols used to expand or narrow a search on a database.

Oct 16, 2023 · Learn how to use Boolean operators for precise searches and effective source integration. Explore AND, OR, NOT operators with examples for enhanced research skills.

Boolean logic defines logical relationships between terms in a search. The Boolean search operators are AND, OR and NOT. You can use these operators to create a very broad or very narrow search. AND …

Sep 10, 2025 · 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 …

Jun 1, 2025 · In programming, a boolean can be used with conditional statements (e.g., if statement), as shown in the following example using Perl. if (($name eq "bob") && ($password eq "example")) { . …

Jul 25, 2025 · Boolean operators are used in search engines, databases, and other computer systems to refine and focus search queries. They work by combining or excluding certain keywords based on …

Aug 29, 2025 · You may use any of the three Boolean operators together in a search string: Example: (bedsore or decubitus) not treatment decubitus and (treatment or care) WILDCARDS Symbols (? or * …

Dec 11, 2025 · Boolean operators tell databases exactly how you want your search terms combined for the optimal results. There are only five Boolean operators and all library databases understand them.