Knowing the difference between search fields helps you dig deeper into a catalog or database to find relevant information.
Keyword: searches anywhere and everywhere for the search term. You get lots of results but fewer will be relevant to your research.
Subject: searches only in the subject headings for the term. You will get results where your search term has been described as one of the main subjects of an item, meaning fewer results but much more relevant sources of information.
AND - use this when ALL the words must be in your results. This will narrow your results. Example: apples AND oranges; peanut butter AND jelly
OR - use this to connect synonyms, when ANY can come back in your results. This will broaden a search. Example: women OR woman OR girl; cat OR kitty OR kitten
NOT - use with caution since this will eliminate results with the specified word.
See a visual guide to Boolean here!
Allen Ginsberg has been used for this example but you can swap "Ginsberg" for the last name of the author you are researching. Keep all of the other terms. This search will look for information with the word "poetry" in the subject. This tells the database to only bring back information that will be relevant for this assignment.
Pay attention to the subjects section in the item's record page. This tells you a lot about the book/article and it also gives you search terms to add to your search term bank. If you click on any of these links in the record page, it will show you all the books/articles that have been "tagged" the same way.
In databases such as MLA International Bibliography and Literature Resource Center, you can search precisely for articles about an author and a work by that author. Databases do not always use the same words to describe the same search field. MLA International Bibliography uses SA: Primary Subject Author to search for a specific author whereas Literature Resource Center uses Person By or About to describe the same thing. Be aware of the differences.