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A Probabilistic Relational Database Model And Algebra / Nguyen Hoa // Tạp chí Tin học và Điều khiển học = Journal of Computer Science And Cybernetics . - 2015. - P. 305-321. - ISSN:
17 p.
Ký hiệu phân loại (DDC): 510
This paper introduces a probabilistic relational database model, called PRDB, forrepresenting and querying uncertain information of objects in practice. To develop the PRDB model,first, we represent the relational attribute value as a pair of probabilistic distributions on a set formodeling the possibility that the attribute can take one of the values of the set with a probabilitybelonging to the interval which is inferred from the pair of probabilistic distributions. Next, onthe basis representing such attribute values, we formally define the notions as the schema, relation,probabilistic functional dependency and probabilistic relational algebraic operations for PRDB.In addition, a set of the properties of the probabilistic relational algebraic operations in PRDB also are formulated and proven.
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