The best database for any given assignment depends on the subject of your paper and the kinds of evidence you need to answer your questions.
You can find databases for specific subjects on the A-Z Databases page. As shown here, click on the All Subjects dropdown and select a subject. A list of databases will then display and you can select one to search.
Another good place to start is in the library's Subject Guides, which summarize the resources we have for most of the subjects taught at CBU.