To find a database that is geared toward a specific subject, take a look at the A-Z Databases list which you can access from the library's home page under the search box.
There are two drop-down boxes at the top of the list of databases that allow you to filter by subject and content type. Use the subject filter to narrow by your area of study. You can also browse the list of databases for something more specific.
Learn more in the Choosing Where to Search link below.