From version 6, ORACLE started to? develop and implement a procedural language, which is named PL/ SQL and synthesizes data managing capacity of SQL and data processing capacity of procedural language. ORACLE从V6.0开始,就着手进行过程式编程语言PL/SQL的开发和实现,该语言综合了SQL语言的数据管理能力和过程式语言的数据处理能力。