This paper firstly introduces the theory of normalization and denormalization in logical design of database.
文中首先论述了逻辑
计中
规范化与反规范化
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,对于许多想设计系统来应对这些挑战
研究人员来说,用于实验
大量数据集根本不存在——至少,学术研究人员无法接触到这种形式
数据库。