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00925njm 22002777a 4500 dc Pérez Porras, Daniel author Muñoz Ariza, Paula author Vallecillo-Moreno, Antonio Jesús author Troya-Castilla, Javier author 2022-07-05 Digital twins constitute virtual representations of physically existing systems, synchronized at a specified frequency and fidelity. One way to connect physical and digital twins is through data lakes, which are efficient storage and query processing systems to manage the data exchanged between the twins. Existing digital twin systems make use of NoSQL or time databases for realizing their data lakes. Although very efficient, these proposals present some limitations for implementing non-trivial queries over highly connected data. In this paper we explore the use of graph databases for implementing data lakes, compare them with similar NoSQL proposals, and discuss the situations where one solution outperforms the other. https://hdl.handle.net/10630/24677 SQL (Lenguaje de programación) - Congresos Ingeniería del software - Congresos Aplicaciones informáticas - Congresos Key-Value vs Graph-based data lakes for realizing Digital Twin systems