| 摘要 |
A process management system has a plurality of processes, each process producing a group of products from at least one kind of parts by applying a predetermined operation thereto. A plurality of processes are hierarchically connected so that a final product is obtained from a plurality of parts. Part data and production data is generated. The part data is data related to connection information, and the part data includes at least usage time data. The product data is data related to the connection information and including production time data. A ratio calculating system is provided to calculate a ratio of the products obtained with use of the parts to the group of products in accordance with the production time data and the usage time data.
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