Research and Implement of SDO Model in University Enroll System Based on SOA
|Course||Applied Computer Technology|
|Keywords||SDO Model API DAS Heterogeneous Data Data Integration XML|
In recent years, with the continuous deepening of the reform of colleges and universities, enrollment scale has been kept on expanding, the construction of digital enroll system has developed rapidly. However, because development platforms, database management systems and development language are different, making the integration of a variety of heterogeneous data in enroll system become difficult, resulting in "information island" phenomenon, greatly affected the conduct of enroll work. SDO (Service Data Object) model provides a simple unified data model for services and applications to be used to solve the disunity of data and the operation of heterogeneous data in enroll system. Developers only need to understand the API(Application Programming Interface) of the SDO can be achieved the purpose which operation and access the heterogeneous data, so that developers can be freed form the technical details of format conversion to focus on business logic.This paper mainly researched the design and the implementation of the SDO data model. Firstly, it described the background and research significance of studying this topic; then the paper briefly introduced definition, targets and work processes of the SDO, it also deeply analyzed SDO software framework and SDO specifications and detailedly introduced DAS (Data Access Service) application scenes and the pivotal implementation techniques such as XML( extensible Markup Language); And then the paper mainly studied the SDO model and proposed heterogeneous data integration strategy based on SDO model, the paper took an example for the department of the enroll system to design its SDO model, then it used the department’s SDO model to deeply research the implementation of the SDO model in the data access layer, and then used DAS to load the Data Graph generated in data access layer, through the configuration file to connect the corresponding data source, Corresponding to the data source operation. Finally, it summarized the work of this article and pointed out the further work direction and research direction.