摘要： 文中首先讨论了在关系数据库系统中视图的主码。视图的含义及谓词表示、视图的更新操作等问题;然后提出了在面向对象数据库中,用视图类或结构视图来实现视图机制的方法。

关键词: 数据库, 视图, 面向对象, 视图类, 结构视图

Abstract: In this paper, the problems of the primary key, the meaning and its predicate description, the update operations and so on for the view in Relational Database Systems are discussed, and the way by which the view mechanism is realized by view classes or structural views in Object-oriented Database (OODB) is given.

中图分类号: 

• TP311.13