Research And Implementation Of Data Exchange Platform Based On XML And Web Services

With the fast developing of informatization, the cooperation and information sharing between applications of inner-enterprise became more and more important. How to bridge applications of inner-enterprise to realize the reciprocal data accessing and exchange, to implement data exchange and information sharing among applications transparently, has become one of pivotal problems to be resolved immediately.The currently available data exchange technologies have many shortcomings, such as lacking uniform standard, high platform dependence and system coupling. The emergence of XML and Web Services technologies has brought data exchange a new method. XML has features such as platform independency, easy extendibility and strong semantics. It's used as common data format while data exchanging. And Web Services can construct a generic, platform independent and language independent layer. Different platforms can integrate and connect with each other using this layer.XML, Web Services, distributed system architecture and related technologies are researched in detail. After analyzing of common data exchange mode and technology, a heterogeneous data exchange platform framework based on XML and Web Services is designed. XML is used as common data format in the data exchange platform. Data structure and value information are described separately as data structure document and value document. The conflict of heterogeneous data will be resolved by analyzing structure document and translating value document. Heterogeneous data systems are linked by Web Services technique.This paper presents the architecture, working process of the framework and main modules' design of the platform system. And the solutions of key problems such as generating XML document from data stored in relational database, integrating XML document to relational database, transforming of between XML documents, transmission and reception of XML document are analyzed. At the end, a prototype system has been realized combined with some relational database. And this system has been shown that it can realize data exchange between heterogeneous distributed databases and it has good characteristic of loose coupling, opening and extensibility.