Abstract: A supply chain management system is configured to create supply chain network information including information on a directed graph representing a multi-tiered supply chain network including tiers upstream and downstream of the target enterprise, acquire risk information on the multi-tiered supply chain network, detect, in the directed graph, a risk occurrence node influenced by a risk and a node of the target enterprise influenced by a defect of product supply at the risk occurrence node, search for a substituting node candidate for the risk occurrence node in a node group including a node of an enterprise outside the directed graph based on an item of the risk occurrence node, and present information on a change plan of the multi-tiered supply chain network obtained by adding the substituting node candidate to the directed graph.

Abstract: A sourcing support system comprises: a weight calculation unit configured to calculate the name of the related parts group related to the target part when target part specifying information is input; calculate the name of the related parts group; and calculate the evaluation index weights of the evaluation indexes of the supply capacity; and a score calculation unit configured to calculate a name of a candidate supplier who can purchase the target part; calculate the evaluation index score of the evaluation index of supply capacity and the evaluation index of soundness for the calculated names of the candidate suppliers; calculate the sum of the products of the evaluation index weight and the evaluation index score, with respect to the evaluation index of supply capacity as a supply capacity score; calculate the sum of the evaluation index score S of the evaluation index of soundness as the soundness score.