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Relational Databases are currently at the heart of information system of the companies. In recent years, the relational model has become de facto standard thanks to its maturity and efficiency. However, the fact that the data of some companies or institutions have become too large, new systems has appeared namely NoSQL which belongs to the Big Data era. Big Data comes due to the emergence of new online services on which customers have become increasingly connected, which creates a large digital data unbearable by the traditional management technical tools, which raise new challenges for companies especially to access, store and analyse data. In this paper we will propose a feasibility study of migration from relational databases to NoSQL databases specifically HBase database, by applying the operations of the relational algebra in HBase data model and explore the implementation of these …