摘要
主键在数据库中具有重要地位,其设计直接影响到数据库系统的应用和效能。该文从主键概念出发,对现在常用的数据库主键设计方法进行了比较,提出了主键设计的相关原则。
Primary keys are very important in databases,and.their design directly affects the application and performance of database systems.Starting from the concept of the primary key,the paper compares the commonly used design methods of the primary key,and proposes the relevant principles for primary key design.
作者
常玉慧
CHANG Yu-hui(Jiangsu Technical Teachers College,Computer Engineering,Changzhou 203001,China)
出处
《电脑知识与技术》
2009年第12X期10176-10177,共2页
Computer Knowledge and Technology