This article describes and analyzes the concept of Big Data, its origin, the opinions of scientists, its legal nature, and its characteristics. Several leading theories and concepts regarding the legal nature and status of Big Data are explored. The content of the theory of information properties (IPT) and the theory of datafication is revealed. The importance of Big Data in determining its legal status is emphasized. Several theories and concepts that are important for understanding and recognizing the material value of Big Data are touched upon. Ownership is considered a fundamental aspect (element) of Big Data ownership, and several theories and concepts are analyzed that offer different approaches to determining the ownership of data. In particular, the content of the theory of the concepts of appropriation, access, and control is revealed. Due to its specific characteristics, such as the volume, variety, and speed of data processing, Big Data creates new problems and issues in the field of legal protection. The activities of international organizations dealing with legal data protection issues are analyzed. The theories and concepts of the transfer of ownership of Big Data and its legal consequences are comparatively studied. The legal status of Big Data in Uzbekistan and its legal framework are highlighted, and the current legislation is analyzed.
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