Library databases aggregate journal articles from many different sources. Some databases specialize in certain subjects, whereas others offer materials from a much wider breadth.
Databases can be accessed directly when in the library. If accessing from anywhere else, you will be prompted to enter your Ole Miss username and password before being able to use the database or view your article.
General engineering databases are a good place to begin your research, especially for interdiscipinary topics. These databases cover a wide breath of engienering areas.
Subject-specific databases may be more useful for finding information on a narrow topic that would only be of interest to researchers in that specific field.