Informationsverarbeitungssystem, Programm und Informationsverarbeitungsverfahren

The object of the present invention is to decrease the effort and cost involved in managing a product development project. Provided is an information processing system comprising a specific task list acquiring section that acquires a specific task list in which at least one of a requirement that is needed for a product being developed and a component included in the product being developed is associated with each of a plurality of specific tasks; a requirement/component dependency relationship information acquiring section that acquires requirement/component dependency relationship information indicating dependency relationships of the requirements and the components indicated by the specific task list; an integrated task dependency relationship calculating section that calculates dependency relationships of the specific tasks based on the requirement/component dependency relationship information; and an integrated task dependency relationship information generating section that generates integrated task dependency relationship information indicating the dependency relationships of the specific tasks.