Research On Data Exchange Technology Based-on Object Model

The information system already penetrated in the modern society into the various trades and is playing the vital role in the respective position. But because environment of development and the way of the original information system is independence, it has formed information system's data and information heterogeneous.It is very difficult to communicate and share resources and becomes puzzle enterprise information construction subject matters. The higher many enterprise's informationization degrees, the more the information isolated island,the more incisive the information sharing faces the question.This is a challenge truly, and is question which urgently needed must solve.Heterogeneous data integration carries on the system interior and the exterior different structure's data resources the conformity, is the enterprise carries on the resource sharing and realizes product data management (PDM), the enterprise using the integration (EAI), and the enterprise resources to plan the (ERP) technology base. The traditional method is the establishment unified data model, provides the unification to heterogeneous data the expression, the memory and the management method, and provides the unification by the operation. Presently, realizes heterogeneous data integration mainstream way is carries on the data exchange through the network, the use middleware realizes system's loose coupling integration.In view of present the insufficiency which studied in this aspect, this article used for reference POSC Epicentre data model and proposed one kind of data exchange technology based-on object model: Namely carries on the integration using XML as the middleware through the entity pattern-shop's mapping to each kind of data. Unifies Web services technology, establishs Object Model with EXPRESS and carries on the model mapping to this document basis corresponding mapping rule, divides into the data exchange is relatively independent and the incident cross-correlation three parts: Namely data takeoff, data mapping and data load. And the data takeoff is responsible the source database in the data migration to the data exchange document in; The data mapping is responsible through the entity description document the source model mapping for the simulated target; The data load is responsible the goal exchange document in the data to move into to the goal database. In the article proposed the complete system structure drawing, detailed has carried on the elaboration to its principle.Along with the informationization gradual advancement and the information content rapid inflation, the data integration's category will be getting more and broader, will carry on integrated to each kind of data the request also to be able to be getting more and more urgent. Therefore this article has the important theory and the actual value; hopes to the topic research can the heterogeneous data integration development contribution meager strength.