To provide an analysis and strategy execution tool corresponding to a data base.

This analysis and strategy execution tool corresponding to the data base is mainly constituted of two different components, that are an event detection system and a strategy management system. The event detection system produces one environment. In the environment, an important event inside a data storage or inside the party (set) of data records for producing an opportunity to a system user is detected. In the meantime, the strategy management system decides an appropriate strategy based on the detected event and operates the strategy. By executing both systems inside the environment of the user, the user can define, investigate and then execute an appropriate action based on the event specified for the party by using a consistent and systematic method.