Mapping Technology, Based On Model-driven Data

Nowadays the Information System is used in almost every trade in our society and play a very important role.With the development of InterNet it become possible that the imformation can be shared in Web.Almost every lage-scale,medium-sized and small company become more and more depending on IT.The Information Sharing change the working-way of people,the efficiency and collaboration of work between enterprises is promoted and strengthened through this way.But there is a problem,because former Information System was built independently in different way,the data and information between Information Systems is heterogeneous,so communication and Resource Sharing appers hard.The result is there appears a lot of single Information-Island. The data of various construct internal and external one system could be integrated by Integration of heterogeneous data.Some important Enterprise-Application, such as PDM,EAI,ERP　and　so　on,depend　on　the　Integration　very　much.And　generally　Integration of heterogeneous data is achieved through the exchange of Web data.This kind of Integration is loose-coupling and one of key techenologies is the transformation of data of various construct between Source and Target. This article present a kind of Data Mapping techenology based MDA,descript the Mapping Relation conformably and normally based the united discription of DataModel.So we can accomplish the transformation of data from Source to Target that is to say the integration between heterogeneous with the uniform exchange way by the means of loading the Mapping Relation. MDA(Model Driven Architecture)is a architecture cried up by OMG,it break the traditional Software Engineer way,the core of software development is Model and Model run through every stage of development,analysis,design,realization,deployment , maintenance and management.Appearance of MDA make the United Data Modeling mature.With the thinking of MDA this article introduce the logic construce of Data Dictionary that discprit the Data Model uniformly.At the same time on the MetaModel level of Data Dictionary and based Data Dictionary this article analyse the Mapping Relation between heterogeneous Data Models.It define and Formalize the syntax of the Mapping Relation and provide EBNF to discribe the syntax of the Mapping Relation,present the semantic explaination and graphic symbols of modeling elements of Mapping Relation that can be used to visible modeling.Then on the base of the research of Mapping Relation ,this article show how to accomplish the Mapping Relation and present a example of application of Mapping Relation.