Abstract text

Provided is a rehosting method for converting a mainframe system environment into an open system environment. The rehosting method rebuilds hardware (HAV) and software (SAV) of a company-data processing mainframe system environment to be appropriate for an open system environment, converts data included in a database or a general file to be appropriate for the open system environment, and reuses an application program. Thus, the rehosting method can be implemented at low cost within a short time and can significantly reduce maintenance cost.