A review of the literature is often necessary in order to survey and analyze current (you determine time frame) literature relating to a particular issue, problem, theory, methodology, model, framework, etc.
A thorough literature review involves a comprehensive search of all known/findable scholarly literature that addresses the topic. In some cases other types of sources, such as books or book chapters, theses or dissertations, “gray literature” such as technical reports, documents, media, social media, or conversations may also be appropriate.
The written review provides a summary and analysis of this literature in order to put research into a context, to explain what has been done to date, and/or to identify gaps or missing elements.
A literature review is a survey of current (you determine time frame) literature relating to a particular issue, problem, theory, etc. The review involves a comprehensive search of all of the known/findable scholarly literature related to the issue or topic. The written review provides a summary of this literature and can be a publication in its own right, or may be part of a larger academic research publication.
Formulate the research question
Conduct preliminary search(es) of the literature as appropriate in order to:
Refine the topic
Conduct a comprehensive review of the literature using multiple dabases and other appropriate resrouces
Most databases offer options that will refine or limit your search results.
Typical options include: