Abstract: Provided is a modeling method including: executing a modeling program; performing a first modeling based on a plurality of entities by using the modeling program, wherein a first entity among the plurality of entities comprises a first parameter and a first value corresponding to the first parameter; parsing a header value, a parameter value, and a modification value corresponding to each field from a data table comprising a header field, a parameter field, and a modification field; modifying the first value of the first entity based on the extracted header value, parameter value, and modification value; and performing a second modeling based on the modified first entity.