Unstructured Data sounds like files that store disorganized data or simple text, but I see it as more of a classification term than the description of a file’s lack of internal data structures. Some examples, provided in an article by
What Is Dark Data?
What does Dark Data mean? We use this term on our website, as if it is obvious. In the most basic terms, Dark Data is information that is difficult to find. So, in effect it is sitting in the dark.