The Management System Of Sale & Commodity Transportation With Technology Of Active Database

Active Database is the integration of database and artificial intelligence technology, which enables database to be able to automatically react to events. It satisfies people's requirements of active services and it is often by triggers to realize the active mechanism in an ADBMS.In this paper, the concept, general model about active database and ECA system are introduced. On basis of understanding the design idea of ADBMS as well as the development experience of the author, the general situation of developing the project of sale & commodity transportation with short message is also described. At the meantime I focused on the analysis and research on realizing the active prediction function in it's subsystem of market management.Through the deep study on active database technology, the author has made some achievement such as the layout and realization of an analytic model for market predict; the solution of active rule's description and the design of memory structure as well as the effective solution to disposition about active rules. The details go as follows:1) The designed procedures of rule expression in active database system can solve the problem about the relationship between the change of data state and rule expression.2) The application of rule directory can save the running time and cost, and perform the action defined in advance rapidly and accurately, and settle the problem between the organization and storage of rules.3) The application of controlling the performance of rules with priority and no backdate for rules fired recursively can solve the problem of concurrent active rules, and therefore ensure the validity and consistency of the data in database.