通过学习PL/SQL基础语法和函数、存储过程、包、触发器等数据库对象的概念、基本语法及应用，达到学以致用的目的，并能在应用程序中调用存储函数及过程(By learning basic concepts, basic syntax and application of PL/SQL basic grammar and functions, stored procedures, packages, triggers and other database objects, we can achieve