This paper firstly introduces the theory of normalization and denormalization in logical design of database.
文首先论述了数据库逻辑
计
的关系
与反
的问题。
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The trouble is, for many of the researchers who'd like to design systems to address these challenges, massive datasets for experimentation just don't exist — at least, not in formats that are accessible to academic researchers.
问题是,对于许多想要设计系统来应对些挑战的研究人员来说,用于实验的大量数据集根本不存在——至少,学术研究人员无法接触到
种形式的数据库。