Variety

This represents the kinds of information associated with structured, unstructured, or semi-structured data. Key values include web clicks, relational tables, articles, e-mail messages, streamed audio and videos, and other media. This information may be gathered through sensors, smartphones, and social networks. In the healthcare sector, the information is gathered from unstructured and semi-structured sources, such as clinical trial outcomes, electronic health records, and physiological and chemical sensors [16].
