【摘要】 本文利用关系数据库设计理论,深入研究了候选关键字与函数依赖的关系,得到了求解候选关键字的规律并提出了具体求解算法。文中有关定理拓展了文献[1]、[2]中的有关理论。更多还原

【Abstract】 By the design theory of relational database, the relationship between the candidate key word and the functional dependency is studied and some rules for finding the candidate key word are obtained. Two useful algorithms are given.更多还原