Research On Data Exchange Model Based On Role

In the face of data's autonomous, distribution and heterogeneity which between business units information systems, the data exchange has become an inevitable demand. But in the past, data exchange which based on roles rarely to be considered, in fact, users play a central role in data exchange. How the idea of role applied to the data exchange has become one of the hot research.To address the issue above, this thesis introduces the idea of role to data exchange, researches on how to describe the demands and reponses of data exchange for the role and the data services which provides from data resource to the role, data exchange flow description method which as the center of the role was proposed. This thesis researches on the model of the role flow and information exchange technology between role. Specific contents are as follows:1. The concept of the role flow and data exchange flow description method which as the center of the role were proposed. Analysis the characteristics of the workflow and role flow, through semantic changes of the description parameters an the use of extended attributes for the XPDL to define the model, convert the workflow modeling method as the center of the process to the role flow medeling method as the center of the role. Using this method, the role was introduced into data exchange, more conductive to data lifecycle management, the quality and reusability the data exchange was improved.2. Through analysis information data of the role, the definition of the role which based on user group was proposed. Geted the information of the role of each user, extracted the same data content which used to characterize the role, divided the users which contains the same data content to corresponding of the role. Through this method can more effective manage and maintain the users and roles.3. Research on information exchange technical between role, gives the description standards of the information and the information element data, through this to describe the information exchange content and method.Finally, based on the research of the analysis synthetically, describes how the prototype system is implemented. It verifies the feasibility and effectiveness of the method which is proposed in this analysis.