摘要: 传统关系模式不适合处理不确定性信息,为处理不确定信息,该文基于元组属性间的联合概率,定义了概率关系及几种基本的概率关系操作和关系代数,提出了概率函数依赖关系的概念,给出了一种概率关系数据库模式及代数.
关键词:
概率关系数据库,
关系模式,
关系代数
Abstract: The traditional relation mode lacks the power to process the uncertain information. To handle uncertain data, we define a probabilistic relation, several relation operations, relation algebra and probabilistic function reliability ,and present a probabilistic relation database mode and algebra.
中图分类号:
李石君,谭成予,刘海青,周洞汝. 一种概率关系数据库系统[J]. , 2001, 27(02): 45-46.
LI Shijun,TAN Chenyu, LIU Haiqing,ZHOU Dongru. A Probabilistic Databases Mode and Algebra[J]. , 2001, 27(02): 45-46.