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在当今世界中,现代化的经济越来越多地使用计算机,因而对实现计算机应用系统的商品化提出了越来越紧迫的要求。目前广泛应用的计算机程序,一般都是计算机软件工作者根据客户的要求进行设计开发的。但用这种方法开发程序,用户自己编程有一定的困难,只得依靠计算机专业人员,用户自己很难对程序做任何改进及进行二次开发,而且这样的应用程序开发周期长,而使用寿命却很短,因为用户所面临的客观世界处于不断的发展变化之中。往往一个应用程序刚刚调试
In today’s world, the modern economy uses computers more and more, thus putting more and more pressing demands on the commercialization of computer application systems. Currently widely used computer programs are generally designed and developed by computer software workers based on customer requirements. However, using this method to develop programs, users have some difficulties in their own programming. They have to rely on computer professionals. It is difficult for users to make any improvements to the program and to carry out secondary development. This kind of application development cycle is long and the service life is long. It’s very short, because the objective world the user is facing is constantly developing and changing. Often an application just debugs