命令字

• Executes a command string or character string within a transact - sql batch , or one of the following modules : system stored procedure , user - defined stored procedure , scalar - valued user - defined function , or extended stored procedure
  执行transact - sql批中的命令字符串、字符串或执行下列模块之一：系统存储过程、用户定义存储过程、标量值用户定义函数或扩展存储过程。
• In desktop computing environment , the style of human computer interaction has been changed from command user interface to multimedia graphical user interface which is a temporary alternative of natural human computer interaction mode
  在桌面计算系统中人机接口已从早期的命令字符方式发展到现代的多媒体图形用户交互形式，并成为自然人机交互技术实现之前的一种过渡方式。