The
Life Cycle of an Entity
It is a model that defines the entity’s
behaviour, since it is created until it is removed
definitively. This model is described as a states machine, extended to represent
different types of Business Rules
ŘStates are rules that define the moments in which an entity
will be transformed in other one
ŘTransformations are rules that define the most important
events that might occur over an entity
ŘTransitions are rules that prevent improperly usage of the
transformations over an entity.