Design And Implementation Of Heterogeneous Data Exchange Based On XML And Web Services

With the rapid development of Internet technology and communication technology, the government office systems and e-commerce system were widely used by government and enterprise,Based on modern information and communication technology,the "electronic government" came into being. Government agencies use the new system of government office to provide the society with efficient management and service functions.In the long term, these systems storage of a large amount of valuable data on,how to use the data exchange system to transform the data from the old system to the new system, and to solve the "information island" problem is focus in this paper. In this paper,in order to solve these problems ,we research and design the system of heterogeneous data exchange baseed on XML and Web Services. The system provides the solutions to the government and enterprise, the solutions are about data transform ,data sharing and data transparent access.With the simple, self-descriptive and platform-independent features and advantages of XML , in this paper,we use the XML data document as the middle layer,to transform data from the source database to the destination database by the XML data document . XML Schema can description the structure of the XML data document, while XML Schema also has a wealth of basic data types and derived data types, since the definition of the characteristics of complex data types. In this paper, the use of XML Schema to describe the relationship between the database model and the structure of XML data files, XML data binding norms and document the effectiveness and legitimacy of the relationship between the database model and the structure of XML data document mapping between. Data conversion from the database to XML documents and XML documents to the database from the two-way conversion. First of all, the data conversion system based on XML data model to generate XML document model database, and then generate the pattern of relationships based on analysis and extraction of XML data files in the data and the data stored in the corresponding data table. Simple Object Access Protocol (SOAP) is a lightweight access protocol, WSDL is used to describe Web services and how they visit the agreement, the two agreements are based on the XML language, correspond with XML language specification, XML language with the characteristics and advantages. In this paper, the use of SOAP and WSDL data exchange system agreement will describe the packaging and the form of Web Services, deployment and release them out for the service requestor to call in the application and use of these functions and interface functions.Through look up the background information of data transform,using XML and Web Services technology,this paper research and design heterogeneous data transformation model,implementing the data transformation of heterogeneous database,the heterogeneous data transform system is deployed on the tomcat server as the form of Web Services.