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
关系规
反规问题。
;
常;规常;
;;;;;法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关系规反规问题。
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量，质量分数均大于98%。
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