![]() For instance, in InfoTrac, you can also use the question mark ( ?) within a word to replace a character. ![]() Some databases allow for wild cards to be embedded within a word to replace a single character. It's best to use the boolean operator "or" in these instances (cat or cats). For example:Ĭat* will also retrieve cataclysm, catacomb, catalepsy, catalog, etc. Truncating after too few letters will retrieve terms that are not relevant. Check the database help screen to find the correct truncation symbol. Tip Neither of these wildcards can be used as the first character of your search. This list isnt exhaustive, but it does provide a starting point for your advanced searching. Boolean operators can help you to find information in Aconex. In general, most of the Library's databases use the asterisk ( *) however, the exclamation point ( !) is used in LexisNexis. Boolean Search Operators: what are they and how they work Databases and Internet search engines use different symbols to truncate. Use Boolean operators and wildcards in your searches to find what youre looking for, fast. Databases and Internet search engines use different symbols to truncate.For example,īank* will retrieve: bank or banks or banking or banker or bankruptcy, etc. It is a database search method based on the principles of Boolean logic, originally developed by the British mathematician George Boole in the mid 19th century. In general, most of the Library's databases use the asterisk ( ) however, the exclamation point () is used in LexisNexis. Using truncation will broaden your search. X-Ray search, also known as Boolean search, is a method we use to locate highly relevant and precise results from websites by combining phrases, keywords, and symbols into the search bar. Databases and Internet search engines use different symbols to truncate.Most databases allow for a symbol to be used at the end of a word to retrieve variant endings of that word.Warning: Some databases use "and not" instead of "not." Check the database help screen. Therefore, use "not" in front of a term to ensure that the search will not include that term. ![]() Not eliminates records that contain a search term. Therefore, use "and" in between terms that are required to make the search specific. You can use Boolean operators such as AND, OR, and NOT alongside keywords to create a Boolean string that will refine. When you search using these operators, it is known as a Boolean search. Therefore, use "or" in between terms that have the same meaning (synonyms) or equal value to the search.Īnd retrieves records that contain all of the search terms. Boolean operators are words and symbols, such as AND or NOT, that let you expand or narrow your search parameters when using a database or search engine. When to Use It: Use the AND operator to narrow search results based on multiple requirements. Or retrieves records that contain any of the search terms. Functionality: Includes multiple criteria in search results. It is helpful to diagram the effects of these operators: Boolean operators are also called logical operators or connectors. ![]() Jump to: Boolean | Truncation | Wild Cards Boolean Operatorsīoolean operators are words (or, and, not) used to connect search terms to expand (or) or narrow (and, not) a search within a database to locate relevant information. ![]()
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