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某企业有几个业务部门,部门1是负责国外业务,部门2负责国内业务,部门3是负责某一类商品的专项业务。在信息化的过程中,该企业起步很早,这些部门也都很积极。但是因为各部门的业务各不相同,对于信息化如何做也持有不同的意见。于是公司的信息中心分别给每个部门做了一个信息系统。当信息化进一步进展时,信息中心发现,如果这三个部门的信息不整合起来,就难以完成全公司的信息化。三个子系统也许提高了部门内某些工作的效率,但在一个部门无法得到另外两个部门的信息,这经常使得他们的业务停滞不前。公司领导也很难得到准确的公司全局经营状况信息。在一般系统理论中有一条著名的定律:“整体大于部分之和”,一个信息系统也是这样。信息系统总是由若干子系统构成的,每一个子系统都有它自己的效益。但是整个系统的效益并不等于每一个子系统的效益。一个好的信息系统的效益将大于每一个子系统的效益之和,但上面的案例却说明并非所有系统都是这样。
An enterprise has several business departments, department 1 is responsible for foreign business, department 2 is responsible for domestic business, and department 3 is responsible for the special business of certain types of goods. In the process of informationization, the company started very early, these departments are also very active. However, because each department has different businesses, it also holds different opinions on how to do informationization. So the company's information center for each department to do an information system. When further progress of informationization, the information center found that if the three departments do not integrate the information, it is difficult to complete the company-wide information. The three subsystems may have increased the efficiency of some of the work within the department but the lack of access to information from the other two departments in one department often makes their business stagnant. It is also difficult for company leaders to get accurate information about the company's overall business conditions. In the general system theory there is a well-known law: “the whole is greater than the sum of the parts,” an information system as well. Information systems are always made up of subsystems, each of which has its own benefits. But the benefits of the entire system does not equal the benefits of each subsystem. The benefits of a good information system will be greater than the sum of the benefits of each subsystem, but the example above shows that not all systems are.