Abstract
As the amount of available data in healthcare has increased significantly and only 20% of electronic health record data are in a structured format, data lakes have become a common solution for managing heterogeneous data in the healthcare domain. Nowadays, these are utilized far below their capabilities in medical research. Since previous reviews only partly address data lakes in the healthcare domain, a systematic literature review on this topic is missing. Therefore, this paper provides an overview of applications in the healthcare domain that benefit from data lakes. We review the literature and structure it according to data sources and players, and we identify applications and future research needs of data lakes in the healthcare domain. Overall, it turned out that all players could benefit from the capabilities of data lakes. We found that data lakes are currently not broadly implemented in the field, and the viewpoint of hospital operators and healthcare insurers seems to be an underresearched topic compared to the other players.
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