Component table management system and component table management method

A component table management system comprising:

• a first storage unit that stores a main component table holding design information of products;
• a second storage unit that stores a sub-component table holding the design information of the products and an update deadline of the design information for each predetermined unit of the products manufactured on the basis of the same design information;
• a first determination unit that determines whether or not the main component table has been changed;
• and
• a second determination unit that determines whether or not a present date is before the update deadline,
• wherein in a case where the first determination unit determines that the main component table has been changed and the second determination unit determines that the present date is before the update deadline, the second determination unit reflects contents of the change performed on the main component table on the sub-component table.