See Table 1 for an example of the development of a database search query string used in a nutrition science research question to investigate if dairy proteins help to suppress a feeling of hunger. Watch the video: Subject searching (YouTube video, 2m16s) This means that your search will retrieve more information or have higher recall but be less precise than other searches. The database looks for a match for your keyword in any field in the record. Most databases search keywords or words anywhere unless you choose another type of search. format or file type - such as PDF, PPT, Excel, audio or video files to focus your search.gov for Australian, educational or government information) domain - restrict to a country, type of organisation or information provider (.au.Search engines such as Google have their own limiters including: This is often best done in the results screen to increase the relevancy of results after a comprehensive search. You may also use limiters to narrow your search. Be aware that this is a powerful search operator and may also exclude important records.Įxample: The search ("respiratory tract infection" or bronchiolitis) and management finds articles about the management of either respiratory tract infections or bronchiolitis. Using NOT narrows the search by excluding specific terms. Use the NOT operator to exclude certain words from your search. You can use OR to search for synonyms, alternate spellings, or abbreviations. Each time you add another term with the OR operator you are potentially increasing the number of records that will be retrieved. This type of search links like terms or synonyms together. Using OR broadens the search to include all records that contain any terms used in the search. ![]() Be aware in some databases AND is implied. The more search terms connected by AND, the more specific your search will be and fewer records will be retrieved. All search terms will be listed in the results. Using AND directs the database to show records that include all the search terms that were used in the search. They connect your search words together to either narrow or broaden your search. ![]() Boolean operatorsīoolean operators form the basis of database logic. To search more efficiently, combine terms in a logical way using Boolean and/or proximity operators, truncation and parentheses. Subject, keyword and author searching allow you to create effective searches. Search syntax for developing search statements Understand your topic and define your search terms.A search strategy is a systematic plan for conducting a search.
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