| 概率关系代数研究 |
| |
| 引用本文： | 江彤.概率关系代数研究[J].科技广场,2011(1):15-17. |
| |
| 作者姓名： | 江彤 |
| |
| 作者单位： | 湖南人文科技学院计算机科学技术系,湖南,娄底,417000 |
| |
| 摘 要： | 基于概率关系的可能世界概念的基本性质,为了能够有效对概率关系查询进行评估,本文对概率关系的元组进行了分类,分为相互不相容的元组和相互独立的元组,提出了概率关系合并操作和四种概率关系代数运算。
|
| 关 键 词： | 关系数据库 概率关系 查询 |
Research on Probabilistic Relational Algebra |
| |
| Jiang Tong.Research on Probabilistic Relational Algebra[J].Science Mosaic,2011(1):15-17. |
| |
| Authors: | Jiang Tong |
| |
| Institution: | Jiang Tong (Department of Computer Science and Technology,Hunan Institute of Humanities,Science and Technology,Hunan Loudi 417000) |
| |
| Abstract: | Based on the basic properties of possible world of probabilistic relations, this paper divides tuples of probabilistic relations into mutual incompatible tuples and mutual independent tuples for evaluating probabilistic relations effectively, and provides the union operation of probabilistic relations and probabilistic relational algebra. |
| |
| Keywords: | Relational Database Probabilistic Relation Query |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
