摘要
本文研究了关系型数据库更新中的一类异常情况,指出了其产生的原因。在此基础上,引进了避免这类异常的新的更新操作,并讨论了它们的实现方法。
A class of exceptions occurring in the conventional modification of the relational database is studied, and the reasons are pointed out. Furthermore, a new kind of modification operation is introduced, are its implementation is discussed.
出处
《计算机工程》
CAS
1987年第2期64-71,共8页
Computer Engineering
