BTM’s System Goals BOOK TRADE MARKET or BTM is a software application that will allow its users to exchange books within a book community library. BTM will act as a large-scale library without facing its practical limits. BTM grows according to the size of its community. BTM enables people to exchange items with each other (P2P) in a free and non-monetary way. BTM keeps an updated Data Base information on each user, on his or her items, on his or her present and past book transactions in order to guarantee an exchange security and reliability. As a result, BTM suppresses the need for any physical infrastructure, and thus creates an outstanding flexibility and growing potential in the system.

AB C Harry Potter Bible Lonely Planet BTM system C sends his Bible to BTM C borrows Lonely Planet from BTM B borrows the Bible from BTM B sends his Harry Potter to BTM A borrows Harry Potter from BTM A sends his Lonely Planet to BTM

signUp PersonalHomePage Logout request evaluation insertNewBook searchNewBook itemDetails homePage userDetails bookList in bookList out bookList in hand requests Future transactions my bookList Edit profile userInfo itemInfo bookInfo present Trans past Trans user

BTM Basic Coding Structure signUp GUI signUp_interface INTERFACE signUp_action GUI ACTION general_interface INTERFACE DB_interface Mysql_interface MYSQL CheckOut = false CheckOut = true user submit

3 - elements basic structure 2 - elements basic structure

Table’s Links userID Bigint (20) pastTransaction presentTransaction bookID Bigint (20) itemIDbookIDuserIDtransID Bigint (20) Bigint (20) Bigint (20) Bigint (20) transIDownerIDborrowerIDitemID Bigint (20) Bigint (20) Bigint (20) Bigint (20) pastTransIDownerIDborrowerIDitemIDtransValid Bigint (20) Bigint (20) Bigint (20) Bigint (20) Bigint (20) userInfo bookInfo itemInfo