摘要
本文描述并实现了一种关系数据库系统视图定义的扩充方法,即参数化视图定义方法。该方法可根据对视图的动态赋值,在不扩充其运算符及过程结构的情况下定义递归关系。本文还给出了扩充的、具有视图参数定义功能的SQL 语言向上兼容的语法。
The concept of parameterized view definition mechanism for relational database sys-
tems is presented and implemented in this paper.Dynamic binding of parameters for the view allows the
definition of recursive relations,such as transitive closure,without using extended operators or proce-
dural constructs such as loops.Upward compatible syntax for SQL that incorporates parameterized
view is also proposed.
出处
《计算机研究与发展》
EI
CSCD
北大核心
1993年第2期21-26,共6页
Journal of Computer Research and Development
关键词
关系数据库
参数化
视图定义
relational database systems
view
parameterized view definition.
