If accessing from off-campus, when you click on the database, it will ask for your Jag Number and password (same as your email account).
As a student at the University of South Alabama, you have access to all of the databases purchased through the Libraries, not just the ones dealing with business. Here's a list of all our databases: https://www.southalabama.edu/departments/library/Databases.html You can browse by name A-Z or click on tags on the right to narrow down by subject.