Component-based Dss Development Environment, Research And Design

Component Based Development provides developers with a method for building applications that are flexible and able to accommodate the ever-changing demands of users in a cost-efficient and timely manner. In this article, the author presents the design of a DSS Developing Environment using component-based approach. This environment provides a visualized DSS developing platform, which integrates traditional Model base technology and modem decision support technologies such as Data Warehouse and OLAP. The article begins with an introduction of the conception and method of Component-Based Development. After that, it briefly introduces the development of DSS and some important technologies that are bound up with DSS. The author then put due emphasis on the architecture design, function design, component design, and implementation technologies of the system. From the process of applying component-based idea to the design of the system, the author has derived some principles for determining the component boundaries and finding interfaces. In the developing environment, the model base is a component repository rather than repository for models built with specific model describing language. The author expounds the technology of how to load, call, and manage the components dynamically. Another key point of the article is bringing up the idea of "Data Backflow" that is to send the decision of policymaker directly back into the database. The implementation technology for "Data Backflow"is expounded in the article. "Data Backflow"enables the integration of Management Information System (MIS) and DSS. The author also discussed other implementation technologies, such as setting up OLAP queries based on relational database, applying XML to data store and coniniumcation between components.