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设关系规范与反规范问题。
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设关系规范与反规范问题。
Results The contents of loganin and morroniside was higher than 98% by normalization method of HPLC.
结果所得马钱苷和莫诺苷用归一法定,质分数均大于98%。
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