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Meghan Markle is a former American actress, best known for her role as paralegal Rachel Zane in US legal drama Suits. She began dating Prince Harry in 2016 and the couple announced their engagement in ...
Abstract: In this paper a new method to judge the grade of normal form for relational database is proposed based on rough sets theory. First, some concepts about INF, 2NF, 3NF and BCNF are given and ...