Data access methods and data access means

The information processing apparatus comprising: a data management data, the data management data data defining a data structure of data indicating group information based on a predetermined storage location of the actual data; and a data access program, the data access program statements to determine the data definition information based on the data the actual function of accessing the data structure, the information processing apparatus referring to the data management data to a storage location for actual data, performs data access program, the actual data access data group.