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。
Abstract: 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.
梁兼栋. 关系数据库的更新问题[J]. , 1987, 13(02): 66-73.
Liang Jiandong. ISSUES IN THE MODIFICATION OF THE RELATIONAL DATABASE[J]. , 1987, 13(02): 66-73.