摘要： ------------------------------------标识符 命名规则 实例程序变量 V_name V_name程序常量 C_Name C_company_name游标变量 Name_cursor Emp_cursor异常标识 E_name E_too_many表类型 Name_table_type Emp_record_type表 Name_table Emp记录类型 Name_record Emp_recordSQL*Plus 替代变量 P_name P_sal绑定变量 G_name G_year_sal---------------------------------- 阅读全文

摘要： Block StructureThe basic units (procedures, functions, and anonymous blocks) that make up aPL/SQL program are logical blocks, which can be nested inside one another.A block groups related declarations and statements. You can place declarations close towhere they are used, even inside a large subprog 阅读全文