Abstract: A method and apparatus for producing standardized software specifications and software products involves analyzing an existing software product subject to reuse to produce analysis information. From this analysis information, groups of data mutually having the same contents, and identified as the same meaning data, are detected. Each of the groups is then assigned a standard data name and standard attributes, thus producing standard information. Names of data belonging to the groups of same meaning data in the analysis information are converted into the corresponding standard data names and standard attributes based on the standard information, to produce standard software specifications. A standardized software product is similarly produced based on the standard information.

Abstract: A reverse engineering method for supporting software reuse in generating an upper level software product from a lower level software product allowing the reuse of some software product's among multi-level software products ranging from an upper level data flow to a lower level job flow. The method includes the steps of: generating an upper level software product using a lower level software product; generating relational information between the lower and upper level software products; inputting a request for changing the upper level software product via an input/output interface; changing the upper level software product in response to the change request; and detecting a reusable field of the lower level software product which is not to be changed, in response to a change of the upper level software product.