Subject terms, also referred to as controlled vocabulary, are specific words that databases assign to describe each book or article within their collections. These terms are organized and maintained in searchable thesauri by the databases. Instead of relying solely on keywords, users can search for articles using these subject terms, which are often more precise and standardized.
Utilizing database thesauri can assist researchers in generating effective search strategies, especially when they are uncertain about which keywords to use. By entering a term that best represents their topic, researchers can explore the thesaurus to discover related terms or synonyms that may better describe their area of interest. This approach helps researchers refine their searches and ensures they use appropriate terminology.
Subject searching can be a valuable method for quickly narrowing down search results to a specific topic. However, it’s recommended to use subject searching as a complementary step to keyword searching. Initiating a search with keywords allows researchers to explore a broader range of relevant literature before honing in on specific subject terms.
Many databases provide features such as “Suggested Topics” or “Suggested Subjects” to assist users in identifying relevant subject terms related to their keyword searches. These suggestions can guide researchers in refining their search queries and discovering additional subject headings to incorporate into their searches.
While not all databases offer searchable thesauri, many academic databases do provide this functionality. Researchers can consult the Database Thesauri FAQ for a list of NU Library databases that offer searchable thesauri. Additionally, databases may include links labeled “thesaurus,” “topics,” “subjects,” “descriptors,” or “related terms,” which lead to thesauri or lists of subject terms. Advanced Search options in databases often include access to subject terms as well.
Overall, utilizing database thesauri and subject terms enhances the precision and effectiveness of literature searches, helping researchers locate relevant information more efficiently.
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