一种关系数据库查询优化的方法

A Method for Optimizing Queries in Relational Database

本文提出一种将关系数据库的SQL查询转换为关系代数的一种方法 ,该方法使这类查询的SQL语句得到优化。

In this paper, a new method is presented to translate SQL queries to algebraic operations in relational database. This method makes the SQL statements of this kind of queries optimized.