Researching And Initially Implementing Data Service Integration With OWL-S In The Core Component DRC Of DOA

With the development of computers and networks, the enterprises have an increasingly demanding for information. In order to have a more competitive in finance, communications, geospatial information industry, etc, and higher efficiency in internal human resources management, finance and other work, the enterprises establish appropeiate information system. The information systems use different platform and technology to develop. At the same time, each system has its own way to storage and access date. As enterprises continue to develop, the demand for real-time information is getting stronger, plus most of the enterprise can not determine the future growth in the design of information systems, therefore, at different stages of development, the enterprise usually using different platforms and technologies to develop information systems. These systems have big difference between the development platform and technology, they are independent and can not communicate and share data. Finally, it results in the situation of ―islands of information‖.In order to solve the problem of ―islands of information‖, Data-oriented architecture is a very effective solution. It comes true the resources of sharing and full using. DOA(Data-Oriented Architecture) is a system architecture model, which data-centric, to be identifed by the mark language. Through data registration system with XML, it comes true the resources of sharing and exchanging between multiple systems. DRC(Data Registration Center) is the core component of DOA. It is a transfer station between the integrated system of the client and the ―cloud‖. It centralized manages the storage data with the technology of data exchange standard. In other side, it provides unified data access interface of identification document. It implements a seamless and transparent integration of data sources. At the same time, through Data Registration Center, the client using Web services can quickly and easily query a wide variety of data in the ―cloud‖.The purpose of this research is to improve the DRC’s data access efficiency. It makes DOA to have a better way to solve the problem of information sharing. Through data services integration in DRC, the client can access data faster, as well as make the foundation in the integration of DRC. The main contents of research include the design of service integration model and data service composition compatibility verification in DRC. This article summarized as follows:(1) Research data service integration model with OWL-S in DRC.Clients using Web services approach to query, retrieve data in DRC. The key of communication research in DRC is to solve how easy and fast querying multiple data services. This paper made a thorough studying of the DOA and the studying of Semantic Web services. Based on data-centric feature of DOA, it designed service composition model, which is described by OWL-S, with data flow. The paper explains the various roles and their operation function.(2) Research the automatic modeling method of Petri net with OWL-S.In the DRC, the use of Petri net method characterizes the OWL-S service process(particularly complex processes) operations. This paper studies how establish the appropriate mapping rules between OWL-S service process and Petri net model; how to make the model by mapping rules for automatic modeling.(3) Research the Compatibility of the data service portfolio in DRC.After registration data service portfolio data center, in order to judgement whether the combination of the service is successful, it need to verify the compatibility of these combinations between services. In this paper, by studying Petri net‘s characteristics of deadlock and accessibility, to verify whether the data service portfolio are compatible.The main achievements are as follows:(1) Designed data service composition model with OWL-S based on data flow.Through in-depth study of the DOA, and the study of semantic services, it designs a data service composition model with the description of OWL-S based on data flow.(2) Design of Petri net model based on the data stream of OWL-S service processThrough the study of OWL-S service processes, and research related content on Petri nets, established based on OWL-S service process Petri net model. Based on the characteristics of the data stream in DOA, it designed a Petri net model, which is using the data stream. It reflects the relationships between atomic processes. It can more clearly describe the internal logic of the data service.(3) According to the Petri net ?s properties of accessibility and deadlock, it designed the verification method of data services compatibility in DRC.(4) Through instances designed and tested of combining the data service in DRC, it verify the feasibility of the service integration method with OWL-S in DRC.Innovation points of the research: this paper comes forward a method, which is using OWL-S to interating data services in the core component DRC of DOA.Through a combination of data services in DRC, clients can quickly and easily access data, to better solve the problem of sharing data by DOA.