Patent ID: 7797067

Claim:
A computer-readable recording medium recording a production management program that causes a computer to execute: a first process, based on a component table in which a group of components constituting a product is defined and on production planning information of the product, determining component planning information including a required period and a required quantity of each of the components; a second process linking, for each certain period, the component planning information relating to each of the components to an actual use record indicating time of use of the components and a quantity of the components, and recording the component planning information linked to the actual use record in chronological order as first history information; a third process calculating a difference between the current first history information and previous first history information and recording the calculated difference as second history information; and a fourth process converting the second history information into a markup language and recording the converted second history information, and searching and displaying the second history information on the basis of a specific component and period designated from outside.