熟悉Oracle中游标的类型熟悉游标的属性及使用掌握参数游标的定义及使用掌握使用复合类型接收游标数据掌握预定义异常-Familiar with the cursor in the type of Oracle Familiar with the cursor properties and the use of control parameters of the cursor definition and use of complex data types to receive cursor control Predefined exceptions