Multistage Data Exchange Model

With the fast development of modern information technology, there has established a web-based information management system within and among various industries, and research data exchange have become very important because of the increasingly frequent data exchange and transmission. Meanwhile, it has gained great achievements in the field of network data exchange. For example, scalability and platform-independence of heterogeneous database can be improved by unified data model of data source built in XML; data exchange and transmission under different conditions can be done by data exchange technology.However, among the existing data exchange models, it becomes difficult to effectively measure transmission efficiency in multi-stage exchange process. Due to the difference in software and hardware as well as network conditions of data exchange process, we can not take effective measurement to the process. Based on researching existing data exchange theories and models, this article presents an abstract model of multi-stage data exchange and analyses experiment data gained from simulation experiment. Not only has demonstrating multi-stage data exchange models theoretical guidance for multi-stage data exchange in reality, but also it becomes the theoretical basis of further research into multi-stage data exchange process.