The present invention makes arrangements for preventing data overflow from storage areas of store-type terminals in a data broadcast system distributing data over broadcast. There are provided a storage management part for managing storage areas of receiving machines, a database part for holding contents data and storage management information, which is data for managing the capacities of storage areas of the receiving machines, and a schedule management part for scheduling data distribution, wherein the storage management part uses a change history of storage management information and data contents held in the database part to perform control such as deletion, size decrease, addition, and size increase of the contents data, and the schedule management part manages the capacities of storage areas of the receiving machines by scheduling the distribution of data to the receiving machines.