Research On Architecture Of Application Integration Based On SCA Model

Application integration has always been attached more importance in academic and industrial circles. The industry has lucubrated more then the academy in application integration according to the development of technologies, and has provided much product and standards with the drive of the requirements of integration of distributed system and legacy system, in which the experience and method should be summed up and abstract to theoretics. The application integration based on Web services has been succeeded in recent years, then makes people pay attention to the integration technique of SOA and has been the hotspot of the research. Although Web services is the best practice of SOA, it just prescribes the constructing single service, which does not point out the problem of the assembly of services, furthermore the integration technologies has developed for many years, Application Integration based on SOA should be compatible with traditional integration technology, not only be limited to Web services. Services Component Architecture (SCA) is provided by IBM, BEA, Oracle, SAP, and other 18 IT software businesses which is about the SOA services on the construction, assembly and norms. Using the assembly model of SCA, the Web Services technology on application integration is not only developed, but also the service assembling issue of the integration process is solved.This paper analyzes Application Integration based on Web Services and the disadvantage of SCA. Comparing with other technology, the advantage of SCA is given; data programming is facing challenges now, and we make use of Service Data Objects (SDO service Data Object), comparing with other technologies, we describes the advantages of SDO. A architecture of the application integration based on SCA, using of SDO and combining with Data Access Service (DAS) has benn designed in the paper. With the background of the provincial examination center management system which I am familiar with, Composite, Components, Interface, Properties, References, Services, wire, Binding and other elements of the SCA based on the integration framework are building. The data graph, data objects including type, multiple Properties and set, sequence of SDO are provided in detail. As to DAS, taken RDB DAS for example, we design the DAS implementation model and construct of the SCA service connection and calling. In particular client Asynchrony invoke asynchronous transfer mode, This paper provide the integration of registration composite and matriculation composite in the Academy to University Matriculation System and the experiments of the adoption of the client IP access weather forecast demonstrate in order to show how SCA, SDO and DAS work together.