Finally we point out that there are many other important applications of analytical graph in relational database systems.
最后，我们指出分析图在关系数据库系统中的许多其它重要应用。
We define the analytical graph from which we deduce a series of properties and obtain a theorem for evaluating the set of keys in relational schema.
我们定义了分析图，推导了一系列性质，并由此得到关系模式的关键字集的求解定理。
We define the analytical graph from which we deduce a series of properties and obtain a theorem for evaluating the set of keys in relational schema.
我们定义了分析图，推导了一系列性质，并由此得到关系模式的关键字集的求解定理。
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