Research on software evolvement based on evolved component

Based on CBD and from the point of the software evolvement,the conceptual and technical model of evolved component and the relative theories of relation operations between evolved component were proposed in this paper.The transitional algorithm from relation diagram to expressions of relation operation was established,it provides theoretical bases for the research on attributes and behavior characters of component and software evolvement.The influences and degree of contribution of components during the evolving procedure of software were systematically analyzed,it provides the technical supports for the controlling of procedure of software evolvement and making rational evolving schema.