The Business Rules
Ÿ    A Business Rule contains three kinds of knowledge:
ØActions, that refer to the knowledge of ‘How’ to do something
ØDecisions, that relate to the knowledge of ‘When’ the actions will be applied
ØEntities, that identify to ‘Whom’ the actions and decisions will affect and will be applied to
Ÿ    According to the hierarchy of execution and application, the BR have been classified in high, top, middle and low level rules