Library databases are collections of descriptions of research resources such as articles, books, dissertations, and reports. Some databases focus on a specific discipline; others are multi-disciplinary.
For Eric, ProQuest Nursing and PsycInfo, access the Thesaurus from advanced search screen:
Search for a term. It is best to use single-word searches. After searching, click entries of interest to learn more.
You can conduct searches from the thesaurus by clicking boxes next to terms. Exploding is a quick way to search for a term and all terms below it in the hierarchy