O.Ulusoy [6] mentioned three peer to peer network structures. Purely decentralized, partially centralized and hybrid centralized structures are them. R.Blanco et al. [4] describe a architecture of a peer, in a peer to peer network, related to data mining. It has local data store to store raw data send to the peer. Also It introduced other peers cache storage to store data send from other peers. The Data management layer designed for query management and cache memory and update management. He mentioned data management interface should connected to super peers (peers that control other peers or master nodes). Then queries should receive throw that interface.