What is the purpose of Boolean operators in database searches?

The purpose of Boolean operators in database searches is to filter database search results. Boolean operators—primarily "AND," "OR," and "NOT"—are used to connect keywords in a way that refines the search and retrieves more relevant information. Using "AND" narrows the search by requiring that both terms are present in the results, while "OR" broadens the search to include any of the terms provided, allowing for a more inclusive set of results. The operator "NOT" excludes terms that may not be relevant, further honing the focus of the search.

The ability to effectively filter results is vital in managing the vast amount of information available, directing researchers toward data that meets their specific criteria and needs. This is particularly important in evidence-informed practice, where the relevance and quality of evidence significantly contribute to informed decision-making. The other options do not reflect the role of Boolean operators; they address aspects unrelated to search functionality, such as visual layout, statistical calculations, and citation automation.