Background information, or reference information, is the type of information you could get from an encyclopedia. These resources will give you trustworthy overviews of a topic and provide you with basic things like dates, events and facts about your topic. Generally, you can think of this information in terms of the who, what, where and when of a topic. For a literature review, this information would NOT count as a useful source to review. However, it can provide helpful information to contextualize advanced scholarly articles which may require its readers to have some background information on the topic.
A database of full-text encyclopedias, almanacs, and specialized reference sources for multidisciplinary research. Gale
Designed specifically for public libraries, this multidisciplinary database provides full text for more than 2,000 general reference publications with full text information dating as far back as 1922. Covering virtually every subject area of general interest, it also contains full text for more than 1,000 reference books and over 164,400 primary source documents, as well as an Image Collection of over 502,000 photos, maps & flags. EBSCO