Key Issues Of Enterprise Information System Integration Based On Grid

This dissertation applies the Grid Technology to the area of Enterprise Information System Integration (EISI), focusing on several key issues of Enterprise Information System Integration Based on Grid (EISIBG) such as the architecture framework, model implementation, platform design, construction methods and resource scheduling strategy. The target is to effectively eliminate "Information Island" and to access variety of data more efficient and convenient. The main contributions are as below:First, the fundamental theory of Grid is summarized, including Grid concept, architecture and Multi-Agents theory. The current research on enterprise information sharing and integration and the opportunities and challenges of EISI at Grid times are analyzed. The research background and significance of EISIBG were also addressed.Second, based on the characteristics of enterprise information system, a new EISIBG hierarchical system architecture easy to apply Grid services is proposed by adopting hierarchical grid design idea and improving and expanding OGSA grid architecture. In addition, FEAF-based six-layer EISIBG architecture framework is designed and various aspects of different parts of the framework are displayed using the architecture perspective matrix diagram. Furthermore, EISIBG prototype system modeling is investigated and EISIBG architecture framework products model based on UML is developed.Third, to solve the common issues of data sources and service heterogeneous in current enterprise information system, Multi-Agents System (MAS) and Multi-Agents EISIBG integration platform are introduced. Through the analysis of Agent composition and function of the platform, the basic component of EISIBG platform, the service-driven collaborated Agent meta-model, is built. Based on the above models, MAS Union collaboration mode on EISIBG platform is further studied and its formal semantics is provided. The service flow, information flow and breakpoint workflow of MAS Union are designed to improve the overall efficiency of MAS and to provide the strong platform support for EISIBG integration. Finally, some examples are provided.Fourth, an enterprise information system building technique under grid is proposed. Then EISIBG component definition, knowledge library composition and division, and the design and production methods of different components are further investigated. Finally, the integration and implementation process of enterprise information system based on Build-To-Order is presented.Fifth, according to the dependency between the scheduling tasks, the Independent Task Scheduling model and the Dependent Task Scheduling model are built individually. For Independent Task Scheduling, an improved algorithm is proposed which focuses on the feature that a specific task can only be completed by a specific resource and thus to bring in the resources computing capacity constraints. For Dependent Task Scheduling, a new scheduling strategy focusing on the execution order of sub-tasks is proposed. Finally, the effectiveness of the algorithm is verified by simulation.