Two-tier and three-tier architectures user user client application application client network network application server database system server database system (a)Two-tier architecture (b)Three-tier architecture Database System Concepts-7th Edition 1.31 @Silberschatz,Korth and SudarshanDatabase System Concepts - 7 1.31 ©Silberschatz, Korth and Sudarshan th Edition Two-tier and three-tier architectures