This paper firstly introduces the theory of normalization and denormalization in logical design of database.

文中首先论述了数据库逻辑设计中的关系规范与反规范的问题。

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法定量，质量分数均大于98%。