摘要
当参照关系和被参照关系是同一个关系时,某些数据库系统不支持违背参照完整性约束的级联处理方式,本文提出了用"in-steadof"触发器解决该类问题的方案,并给出这类触发器设计的详细算法。
When referencing relation and referenced relation are the same relation, some database system do not allow users to take cascade method to deal with the bad situation of disobeying the referential integrity constraint, we put forward a proposal based on the "insteadof" trigger to solve the problem in the paper, and a detailed algorithm is given too.
出处
《电脑知识与技术（过刊）》
2010年第3X期1942-1943,1946,共3页
Computer Knowledge and Technology
