The Design And Implementation Of MLR Data Integration System Based On Mediator/Wrapper Middleware

In recent years, our country's land resources problem has attracted many attentions of the whole society,more and more people pay attention to the rational use of land. Excessive abuse of land resources, leading to all kinds of disasters,forest and other unsustainable resources have been wild exploitation, the country's precious land resources suffered irreparable damage. To strengthen the management of land resources, improve the efficiency of each department, to predict theillegal behavior of land exploitation, has become the primary task. With the rapid development of economy,the rational use of land resources is an important step for the country to realize the sustainable development strategy,With the development of science and technology,the supervision of land resources is gradually transformed into digital data management and the applications of remote video transmission, etc.However, with the promotion and implementation of monitoring network, to unified management the monitoring the land resources which scattered in around become very necessary, but which has a big problem.Before the implementation of data integration management, due to the development of the time or the different departments, lots of departments are the use of autonomous approach. there are many heterogeneous, operating environment is different from the information system, they are independent and closed to each other directly, so that some effective data can not be shared to each other, forming a "information island" To integrate the existing data, connect the "information island" to achieve the sharing of information, under the situation that the entire monitoring network data sources are large and scattered.So how to achieve the unified management of data, as far as possible to reduce the artificial participation process,to realize the automatic data monitoring is a very challenging project.Based on the above background, this paper put forward a semi-automatic system for massive amounts of data integration solution to complete data integration and management functions, in order to share data and increase the use value of the original data, designed to solve the problem of heterogeneous source, quantity, etc under the data integration problem. In data integration system, there are many ways to realize the integration of the data sharing, this paper proposed a data integration system based on Wrapper/Mediator middleware solution and the formation of the integration platform,aimed at various points around the large amount of decentralized autonomous data source, through the study of the encapsulation of single data source to extract the local schema information, use the Mediator of the middleware model to build a global can be provided to the user mode, push the queryplan and the result of episodic synthetic rules, so as to realize data integration and information sharing.The main research content includes the design of data integration system based on Mediator/Wrapper middleware and the realization of Mediator/Wrapper middleware.The system part will be based on the different use of the user as the basis for the division of the module, the middleware will focus on the part of the query compiler and Mediator/Wrapper generator.