A medical image managing device can be used in a medical image system in which an image storage device storing medical images obtained by an imaging device as past images so as to specify an examination and a series and one or more image reference devices referring a user to the past images stored in the image storage device are connected to each other through a network. The method and system exploit the advantages of peer-to-peer file distribution protocols, such as BitTorrent, while maintaining security and control over the file distribution. The steps are sequentially repeated to form an aluminum thin film, and further includes the step of oxidizing the aluminum thin film using oxygen plasma. Any data table may be flexibly partitioned into column chunks using one or more columns with various partitioning methods.