Several aspects related to big data technologies in the healthcare area, like architecture and capabilities, have been surveyed. Also, many works propose the use of graph databases in healthcare domain. However, according to the best of our knowledge, there is no work that addresses the challenges related to big data technologies and graph databases in healthcare. For this reason, we address a survey of big data in healthcare based on a graph database. The presented paper exposes a gap analysis based on a set of paper related to the healthcare systems based on graph databases and big data technologies.
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