To develop and modify to sufficiently obtain effect of development efficiency for development of an electronic application system and a computer system, without expanding the influence of modification even if the modification of a superordinate component, the creation or modification of a subordinate component are frequently performed.

This system is provided with an operation attribute storage part which stores component name correspondence information, program name correspondence information, component execution sequence information, and component execution format information; an operation attribute specifying device for the electronic application system which comprises a definition information input execution part, an operation attribute storage content creation update part, and an action control part; an operation attribute specifying device for a program; an operation attribute specifying method; and a computer system.