Research of multi-level data exchange mechanism based on Land and Resource E-government

Multi-level data on land and resource plays an increasingly important role in the development of Land and Resource E-government. In view of data security, there must be physical isolation between intranet and extranet of Land and Resource E-government of governments at all levels, therefore, it reduces officials´ efficiency to a certain extent, especially for those on a business trip. Multi-level data exchange mechanism aiming at sharing of data between intranet and extranet is strongly demanded as the rapid development of network service. This paper divides multi-level data on land and resource into two categories: spatial data and government affairs information. We concern with data exchange mechanism mainly in the respect of government affairs information which is considered as an absolute solution to improvement of officials´ efficiency. This paper expounds that the design philosophy of data exchange mechanism based on XML technology is representation of data into XML document. The purpose of the research is to establish data exchange mechanism not only sharing of government affairs information between intranet and extranet but also ensuring data security of Land and Resource E-government. After deeply studying data exchange theories, we propose a development plan based on middleware including three functional modules: data extraction module, middleware indication module indicated by ConfigurationXML document and DataXML document and data storage module. In this paper, data exchange mechanism has been applied in Hubei Province Land and Resource E-government System which is proved in practice as a kind of effective assistance and polish to the system mainly in terms of processing business. In addition, data exchange mechanism used digital certificates technology and the method of tracking security log to assure data security.