1)掌握PLSQL程序设计 2)掌握存储过程,函数和触发器 3)了解一些oralceSQL语句优化方案 -------------------------------------------------------------------------------------准备篇 col empno for 9999;col ename for a10;col job for a10;col mgr for 9999;col hiredate for a12;col sal for 9999;c…