The purpose of this research is to present knowledge in the field of work of databases that contain semi-structured data, also known as NoSQL, in applications using big data. The characteristics of the main categories of the non-relational databases and some of their typical representatives (MongoDB, Redis) have been reviewed from the point of view of using them for storage and analysis of data in the social networks. The article presents a study, conducted on the already existing research in regards to the implementation of the non-relational databases in the social networks. Some of the perspectives of the future research are outlined as well.
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