You will need to find other scholarly literature to conduct your literature review. The literature review summarizes and connects previous research to your research question and proposed study.
Databases are essentially collections of articles or other sources that are easily searchable and organized, and usually provide full text access to the source.
The following databases will be appropriate for this assignment.
Google Scholar is Google's search engine for scholarly articles. You cannot search with the same control as a database, but you also are searching a much wider pool of sources!