PURPOSE: To provide a catalog capable of dealing with various parts and to adopt a computer system using the catalog.

CONSTITUTION: The parts are divided into three elements of a shape element 28 involving a common part in terms of the greatest common divisor of the parts and a deformation part, the element 29 of the quality of the material specifying the quality of the material of the parts and a functional element 30 functionally developing the shape element of the parts, and the shape element 28 is combined with other two elements 29, 30 making the shape element 28 as the reference. Thus, according to the kinds of the parts, these respective elements whose common element (a) and the deformation elements (b), (c) are involved in the shape element 28, and a function development element (d) is involved in the deformation elements (b), (c), and further, the common element (a) and the deformation elements (b), (c) are developed logically by a common element development column 33 and a deformation element development column 34. In such a manner, since all parts are diversified from functional aspect and material aspect, a host CPU can process from the preparation of the manufacturing drawing of parts to the working completion of the parts.