PURPOSE: To effectively gain access to resource information from a point of logical view such as a method for using a resource, etc.

CONSTITUTION: A data processor 1 obtains information required to perform various resource management from a logical resource management request signal 103 and a physical resource management request signal 104, and performs processes at respective management requests. When a request is a logical resource management request which depends upon the usage of the resource, a logical resource information storage part 23 is accessed through a logical resource management means 13 to perform resource management in logical units. When the request is a physical resource management request for individual resources, a physical resource information storage part 24 is accessed through a physical resource management means 14 to perform resource management in physical units. The logical resource management part 13 possibly attains the purpose by utilizing the physical resource management means 14.